NSW in 2012: A cool, wet start and warm, dry finish

  • Close to average rainfall
  • Equal wettest week on record for NSW
  • Warm days, coldest nights since 1994

Rainfall - La Niña brings a wet start to an otherwise dry year

NSW recorded a statewide average rainfall of 568.1 mm during 2012, close to the historical average of 552.8 mm but drier than the recent wet years of 2010 and 2011. Rainfall was generally average to above average across most of southern and western NSW and drier than average in parts of the northeast, with few stations breaking any long-term annual records.

The 2011–12 La Niña event was the major influence on NSW rainfall at the start of the year, with most of the state experiencing rainfall in the wettest 10 percent of years and particularly heavy falls in parts of the south. The statewide average rainfall for January–March was 321.3 mm, the third wettest for NSW since records began in 1900, following the ends of similar La Niña years 1956 and 1976.

The most significant event fell between 27 February and 4 March, when a lingering low pressure trough brought the equal-wettest week on record for NSW. Large areas of southern and western NSW experienced record-breaking weekly rainfall totals, including the wettest day on record for any month at 26 sites, and resulted in widespread flooding across much of the state. Further information on this event is available in Special Climate Statement 39.

In comparison, the combination of a strong high pressure ridge and a positive Indian Ocean Dipole event in late winter resulted in generally dry conditions for the rest of the year, with rainfall less than 5 mm above average in June and July but otherwise well below average. The statewide average rainfall for April to December was just 246.4 mm, the driest such period since 2006 (233.5 mm). During this period rainfall was below average across the state, with particularly dry conditions in the southwest and between August–October. However, a number of heavy rain events were recorded in coastal NSW, with the heaviest falls associated with coastal surface troughs, East Coast Lows, and thunderstorm activity.

See a list of rainfall records.

Temperature

The statewide average temperature for NSW during 2012 was 0.16 °C above the 1961–90 average, with close to average temperatures across the state. NSW has not experienced a year with statewide average temperatures below the 1961–90 average average since 1996. Days were 0.55 °C warmer than average across the state, the warmest since 2009, while nights were 0.22 °C cooler than average, the coldest year for NSW since 1994.

Daytime temperatures were generally cooler than average at the start of the year, associated with the 2011–12 La Niña and well above average rainfall. January–March was 1.6 °C below average across the state, the coldest start to a year since 1984 and the fifth-coldest start to a year since records began in 1910.

Temperatures warmed during following months as conditions dried, with close to average conditions between April and June. The second half of the year was well above average, with the July–December maximum temperature 1.7 °C above normal. This is the sixth-warmest end to a year since records began in 1910, although cooler than the recent years 2009, 2006 and 2002.

Nights were generally cool throughout the year, with slightly above average temperatures in January and July but the January–October period averaging 0.57 °C below normal, the coolest such period since 1994. The cool nights were associated with an increased frequency of cool southerly windflow during the year, in addition to generally clear conditions during the latter half of the year. Nights were particularly cold during May, which was the sixth-coldest for NSW since records began in 1910. Nights began to warm at the end of the year, with both November and December more than 1.4 °C above normal.

See a list of temperature records.

Other phenomena

This is a brief summary of major weather events; for more information see the appropriate Monthly Weather Reviews and Special Climate Statements.

Hot spells

September - Almost a third of NSW (31 percent) experienced its warmest September night on record on the 28th, with minimums as high as 25.6 °C at Ivanhoe, just shy of the September record of 25.8 °C.

November - Between 24 and 30 November most of inland NSW experienced maximum temperatures more than 8 °C above normal, with minimums more than 6 °C above normal. This was the most extended warm spell for NSW since the record-breaking heatwave of 2009, with daytime temperatures reaching 46.2 °C at Pooncarie on the 29th, just shy of the November record. This event is discussed in greater detail in Special Climate Statement 41.

Cold Snaps

January - Thredbo recorded a maximum temperature of just 1.3 °C on 11 January, the coldest January day ever recorded in NSW. This was followed by a very cold night, with much of the state more than 8 °C below normal on the 12th and record-low temperatures at 16 stations including Parkes and Canberra. This event is discussed in greater detail in Special Climate Statement 36.

September - Nights were more than 6 °C below average for 1-3 September, with close to 15 percent of the state recording the coldest September night on record on the 2nd.

October - The combination of an ECL off the south coast of NSW and very cool air in the upper atmosphere brought temperatures more than 8 °C below average across much of NSW on 12 October. Snow was reported across much of the Great Dividing Range, with depths greater than 15 cm in Blackheath and Guyra, stranding motorists in parts of the Blue Mountains.

East Coast Lows

There were several East Coast Lows during the year, with locally heavy rain associated with events on 16–18 January, 8 March, 4–6 June, 12–13 June, 10–11 August, and 12–13 October. The events on 4–6 June and 10–11 August were also associated with very strong coastal winds, heavy swell and coastal erosion, with wind gusts as high as 128 km/h at Wattamolla on 5 June and 118 km/h at Wattamolla on 10 August.

Flooding

Flooding was widespread and severe during the first part of the year. More than 75 percent of the state was affected by flood warnings in early March, with Natural Disasters declared in 63 LGAs by the end of March.

Northeast NSW - A heavy rain event between 23 and 27 January along the north coast of NSW triggered flooding in the Northern Rivers, particularly along the Tweed, with more than 4000 people evacuated and more than 10,000 isolated by flood waters. This was exacerbated by further rain in early February, with flooding in large parts of Moree and the highest flood peak on the Mehi river since 1976.

Southern NSW - A very heavy rain event affected southern NSW between 27 February and 4 March, with the Lachlan and Murrumbidgee catchments recording close to double their previous weekly rainfall record. Several major towns along these rivers including Wagga Wagga recorded their most severe flood since 1974, with tens of thousands of people evacuated and more than 150 flood rescues. This event is discussed in greater detail in Special Climate Statement 39.

Western NSW - Following flooding in southern Queensland in late 2011 and continued heavy rain, floodwaters progressed through the Darling River system during the early part of the year, isolating inland communities and causing major flooding in the Bourke region.

Localised flash flooding also occurred during periods of heavy rain during the early part of the year, particularly due to severe thunderstorms in February and an East Coast Low on 8 March, with further localised flash flooding associated with thunderstorms later in the year.

Further information

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Extremes in 2012
Hottest day 46.2 °C at Pooncarie Mail Agency on 29 Nov
Warmest days on average 28.4 °C at Mungindi Post Office
28.4 °C at Wanaaring Post Office
Coolest days on average 7.7 °C at Thredbo AWS
Coldest day -4.9 °C at Thredbo AWS on 6 Aug
Coldest night -14.0 °C at Charlotte Pass (Kosciusko Chalet) on 6 Jul
Coolest nights on average 0.6 °C at Thredbo AWS
Warmest nights on average 16.7 °C at Lord Howe Island Aero
Warmest night 30.9 °C at Wanaaring Post Office on 30 Nov
Warmest on average overall 20.9 °C at Tibooburra Post Office
Coolest on average overall 4.2 °C at Thredbo AWS
Wettest overall 2307.8 mm at Perisher Valley AWS
Wettest day 290.0 mm at Meerschaumvale (Meerschaum Vale (Barden) on 26 Jan
Highest wind gust 131 km/h at Thredbo AWS on 29 Jun
131 km/h at Lord Howe Island Windy Point on 21 Jul

Maps
ObservedAnomalyDecile rank
Total
rainfall
Map of Rainfall totals Map of Percentage of normal rainfall Map of Rainfall deciles
Mean
daily
maximum
temperatures
Map of Mean maximum temperature Map of Anomaly in mean maximum temperature Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature Map of Anomaly in mean minimum temperature Map of Decile rank of mean minimum temperature

Click on a map to show it full size in a pop-up window


Month by month
January was the wettest for NSW since 1996, and was particularly wet on the north coast, with major flooding in the Northern Rivers due to both an East Coast Low on the 16th-18th and sustained heavy rain between the 23rd and 27th. There was an unseasonal cold snap between the 11th and 12th which broke several long-term records for minimum temperatures, dropping to -3.7 °C at Thredbo; this is described in greater detail in Special Climate Statement 36.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
Rainfall rank Maximum temperature rank Minimum temperature rank
February recorded its tenth-coldest daytime temperatures on record, as well as the thirteenth-wettest. The month started with heavy rainfall in parts of the northeast, exacerbating existing flooding, while a very heavy and widespread rainfall event developed in southern and western NSW from the 28th. There were several severe thunderstorms during the month, with reports of golf ball sized hail in coastal NSW on the 19th and 20th.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
March was the second-wettest and fourth-coldest on record for NSW. The month began with a very heavy rain event in southern and western NSW, described in Special Climate Statement 39. The week 27 February to 4 March was the equal-wettest week on record for NSW, with the Lachlan and Murrumbidgee catchments in the south recording close to double their previous weekly record, resulting in flood levels not seen since 1974.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
April returned to dry conditions as the La Nina event broke down, the driest since 2006, with warm days and cool nights. The month was particularly dry in the west, while a coastal low pressure trough produced widespread heavy rain along the coast between the 17th and 20th.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
May was also generally dry across NSW, with no rain at all in parts of western NSW, resulting in the sixth-coldest minimum temperatures on record.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
June featured closer to normal rainfall, with the exception of parts of the southwest, with nights remaining cool. There were two East Coast Lows during the month, with the first producing very strong winds and heavy swell across much of the east coast between the 4th and 6th, while the second produced widespread rain between Tweed Heads and Wollongong on the 11th and 12th.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
July again featured close to average rainfall and warmer than average days, while minimum temperatures were close to average.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
August was a return to dry conditions and was the tenth-driest on record, associated with a positive Indian Ocean Dipole event and a strong high pressure ridge, with parts of northern NSW recording no rainfall at all during the month. Maximum temperatures were well above average across the state while nights were cold, associated with the clear conditions during the month.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
September again featured warm, dry days across the state while nights were cooler than average. There was a particularly warm spell at the end of the month, with 31 percent of the state recording its warmest September night on record on the 28th, and very warm days on the 27th and 28th. Minimum temperatures were as high as 25.6 °C at Ivanhoe on the 28th, the second-warmest minimum temperature ever recorded in September, with Hay, Wagga Wagga and Tibooburra exceeding their previous records by more than 2 °C.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
October was the driest for NSW since 2006, particularly in the northeast, with very warm days and cooler than average nights. Between the 11th and 13th an East Coast Low and upper cold pool prduced record-breaking rainfall on parts of the south coast as well as widespread cold conditions. Snow was reported across much of the Great Dividing Range, with reports of more than 15 cm at Blackheath and Guyra.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
November was dry and warm across the state, the warmest month for minimum temperatures since November 2011. The month ended with a severe and prolonged heatwave in inland NSW between the 25th and 30th, the most severe since November 2009, described in Special Climate Statement 41. Nights were more than 6 °C above average and days more than 8 °C above average during the week, with temperatures reaching 46.2  °C at Pooncarie on the 29th, just shy of the November record for NSW.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
December was drier and warmer than normal, with the warmest mean daily temperatures since 2005. There were few major rain events during the month, beyond several periods of thunderstorms and rain in the northeast of the state and widespread thunderstorms and rain over the 23rd to 26th.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
Rainfall rank Maximum temperature rank Minimum temperature rank

Record highest daily rainfall
Highest daily rainfall
in 2012 (mm)
Previous annual
wettest
Years of
record
Hillston Airport 123.0 on 4 Mar 119.6 on 6 Feb 1950 130
Coolamon Post Office 123.0 on 29 Feb 109.4 on 11 Jan 1974 127
Grong Grong (Berembed) 202.0 on 4 Mar 80.2 on 5 Dec 1992 126
Urana (Nowranie) 101.0 on 28 Feb 86.9 on 30 Jan 1954 120
Binya Post Office 132.2 on 4 Mar 117.6 on 6 Feb 1950 118
Greenethorpe (Iandra) 111.0 on 1 Mar 93.7 on 12 Mar 1958 117
The Rock Post Office 148.0 on 4 Mar 91.2 on 28 Feb 1939 116
Grong Grong (Junee St) 110.6 on 29 Feb 89.8 on 30 May 1978 114
Mulwala Post Office 94.0 on 28 Feb 87.0 on 20 Jan 1995 108
Whitton (Conapaira St) 126.2 on 4 Mar 87.6 on 24 Jun 1931 107
Wymah (Gwandallen) 105.6 on 8 Nov 86.4 on 20 Jan 1956 101
Tootool (Toronto) 125.4 on 4 Mar 90.4 on 27 Jan 2000 100
Cooma (Kiaora) 118.4 on 21 Feb 113.5 on 4 Mar 1961 92
Walla Walla Post Office 127.0 on 8 Nov 114.6 on 21 Oct 1935 88
Goolgowi (Moira St) 104.0 on 4 Mar 83.8 on 24 Jun 1931 74
Leeton (Bents Hill) 164.4 on 4 Mar 90.4 on 30 May 1978 72
Yerong Creek (Fertilizer Depot) 96.0 on 4 Mar 83.8 on 5 Jan 1934 70
Ournie (Waralla) 112.0 on 4 Mar 101.0 on 8 Mar 2010 57
Yanco Agricultural Institute 175.2 on 4 Mar 85.2 on 21 Feb 2003 56
Keepit Dam 131.0 on 2 Feb 123.7 on 1 Feb 1971 54
Belfrayden (North Mayfield) 116.4 on 4 Mar 82.6 on 16 Apr 1969 45
Ganmain (Rosedale) 131.0 on 4 Mar 104.4 on 30 Jan 1984 45
Barraba (Log Cabin) 108.0 on 2 Feb 102.0 on 17 Jan 2004 42
Thredbo Village 165.5 on 4 Mar 157.0 on 5 Sep 2010 42
The Rock (Miarb) 160.0 on 4 Mar 92.0 on 1 Apr 1989 39
Morundah Hotel 101.4 on 4 Mar 78.0 on 15 Oct 1928 33
Albury Airport 103.6 on 1 Mar 100.0 on 5 Feb 2011 30
Adaminaby (Yaouk) 173.0 on 12 Oct 93.6 on 9 Jan 1992 28
Charlotte Pass (Kosciusko Chalet) 186.5 on 4 Mar 171.0 on 31 May 1999 27
Narrabri (Rosewood Farm) 107.6 on 2 Feb 95.4 on 21 Jul 1998 27
Leeton (Fivebough Rd) 149.4 on 4 Mar 65.6 on 21 Apr 1998 21



Record highest total annual rainfall
Total rainfall
for 2012 (mm)
Previous annual
wettest
Years of
record
Annual
average
Cooma Airport AWS 812.4 762.5 in 1988 24 519.3


Record lowest temperature
Lowest temperature
in 2012 (°C)
Previous annual
coolest
Years of
record
Annual
average
Hay (Miller Street) -3.6 on 7 Jul = -3.6 on 18 Jun 1998 56 10.0
Corowa Airport -5.0 on 2 Aug = -5.0 on 14 Jun 2006 41 8.9
Tidbinbilla Nature Reserve -10.0 on 5 Jul = -10.0 on 28 Jun 1988 28 6.5


Record lowest annual mean daily minimum temperature
Mean daily minimum
temperature
for 2012 (°C)
Previous annual
coolest
Years of
record
Annual
average
Lord Howe Island Aero 16.7 = 16.7 in 1992 23 17.1
Bathurst Airport AWS 5.8 6.2 in 1994 20 6.8
Young Airport 5.7 6.1 in 2002 20 7.1


Summary statistics for 2012
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean
for
2012
Diff
from
average
Highest
for
2012
Mean
for
2012
Diff
from
average
Lowest
for
2012
Total
for
2012
Average
annual
total
Rank
of
2012
Fraction
of annual
average
Western (Far Northwest) (district 46)
Tibooburra Airport 27.9   44.2 29 Nov 13.7   0.6 24 Jun 288.8
Tibooburra Post Office 27.9 +0.5 44.5 29 Nov 13.9 0.0 0.5 3 Jul 317.0 227.2 high 140%
White Cliffs AWS 27.1   44.9 29 Nov 12.9   -0.3 6 Jul 376.8
Wilcannia (Reid St) 27.0 +0.4 45.4 29 Nov 11.2 -0.8 -2.4 24 Jun 385.0 263.6 high 146%
Wilcannia Aerodrome AWS 27.0   45.9 29 Nov 10.7   -2.3 2 Aug 341.2
Western (Lower Darling) (district 47)
Broken Hill (Patton Street)     43.8 29 Nov 12.1 +0.2 -1.2 23 Jun 420.0 259.6 high 162%
Broken Hill Airport AWS 24.7 +0.3 43.2 29 Nov 10.7 -0.9 -1.6 1 Aug 341.2 255.2 high 134%
Lake Victoria Storage 24.6 +0.9 45.1 29 Nov 10.1 -0.7 -2.6 6 Jul 170.3 262.7 low 65%
Menindee Post Office 26.1 +0.2 45.4 29 Nov 12.2 +0.9 0.3 6 Jul 260.9 244.8 average 107%
Pooncarie Mail Agency 26.1   46.2 29 Nov 11.2   0.0 6 Jul
Western (Upper Darling) (district 48)
Bourke Airport AWS 27.8   43.8 30 Nov     -3.0 5 Jul 434.6
Brewarrina Hospital 27.4 -0.2 43.0 1 Dec     -1.8 2 Aug 503.5 416.1 high 121%
Cobar Airport AWS 25.9   44.4 30 Nov 10.5   -4.6 5 Jul 355.0
Cobar MO 25.6 +0.4 43.1 30 Nov 12.2 -0.6 -0.5 5 Jul 379.2 400.6 average 95%
Collarenebri (Albert St)     43.0 1 Dec 12.2 -0.4 -2.0 2 Aug 448.9 503.6 average 89%
Lightning Ridge Visitors Information Cen     43.5 2 Dec 13.0   -1.0 1 Aug 646.6
Wanaaring Post Office 28.4   44.2 30 Nov 12.2   -2.8 2 Aug
Western (Southwest Plains) (district 49)
Ivanhoe Aerodrome AWS 25.7   44.8 29 Nov 11.0   -1.0 10 Jun 309.4
Central Western Plains (South) (district 50)
Condobolin Airport AWS 24.9   41.7 24 Dec 9.1   -4.2 2 Aug 407.4
West Wyalong Airport AWS 23.6   40.7 29 Nov 8.5   -3.6 8 Jul 353.4
Central Western Plains (North) (district 51)
Coonamble Airport AWS 26.1   42.8 1 Dec 10.5   -2.6 2 Aug 565.0
Trangie Research Station AWS 25.2 +0.7 43.0 30 Nov 10.2 -0.6 -3.7 2 Aug 422.8 501.3 average 84%
Northwest Plains (West) (district 52)
Mungindi Post Office 28.4 +0.7 43.5 2 Dec 12.4 -0.4 -1.3 25 Jun 508.5 507.6 average 100%
Walgett Airport AWS 27.2   41.2 19 Dec 10.9   -3.5 24 Jun 508.0
Northwest Plains (East) (district 53)
Moree Aero 26.4   40.3 2 Dec 11.9   -1.8 25 Jun 633.4
Northwest Slopes (North) (district 54)
Barraba Post Office 25.1 +0.7 38.9 1 Dec     -5.1 8 Aug
Narrabri Airport AWS 26.2   40.8 1 Dec 11.2   -2.1 2 Aug 445.4
Northwest Slopes (South) (district 55)
Gunnedah Airport AWS 25.8   40.9 1 Dec 9.2   -6.8 24 Jun 582.6
Gunnedah Resource Centre 25.1 +0.6 40.7 1 Dec 12.2 +0.1 -1.1 24 Jun 577.9 640.9 average 90%
Tamworth Airport AWS 24.9   39.7 1 Dec 8.9   -4.3 2 Aug 769.0 635.2 high 121%
Woolbrook (Danglemah Road) 20.3 -0.2 33.0 19 Dec 5.2 -0.3 -8.0 24 Jun 854.4 788.0 average 108%
Northern Tablelands (West) (district 56)
Armidale (Tree Group Nursery) 20.0   33.1 2 Dec 5.7   -9.0 25 Jun 597.2
Armidale Airport AWS 19.2   32.9 2 Dec 7.1   -5.0 25 Jun 608.6
Glen Innes Airport AWS 20.1   32.1 17 Dec 5.3   -10.2 25 Jun 821.6
Guyra Hospital 17.8 +0.2 29.6 2 Dec 6.5 0.0 -4.7 24 Jun 874.0 929.2 low 94%
Inverell (Raglan St) 23.9   36.6 17 Dec 7.1   -7.6 25 Jun 727.0
Inverell Research Centre 23.4 +0.7 36.3 2 Dec 10.0 -0.3 -3.4 25 Jun 607.4 799.3 low 76%
Northern Tablelands (East) (district 57)
Tabulam (Muirne) 22.4 +0.2 35.8 17 Dec 12.5 -0.1 2.2 4 Jul 1369.4 1274.3 average 107%
Upper North Coast (district 58)
Ballina Airport AWS 24.4   35.0 4 Dec 14.3   2.7 3 Aug 1905.0
Byron Bay (Cape Byron AWS) 23.2   34.0 11 Jan 16.6   9.0 4 Jul 1530.6
Casino Airport AWS     39.4 20 Oct 13.7   2.0 25 Jun 1121.8
Grafton Airport AWS 25.4   38.6 20 Oct 12.2   -0.9 4 Jul 1103.0
Grafton Olympic Pool 25.9 +0.1 38.9 20 Oct 13.8 +0.1 1.0 4 Jul 1217.9 1077.6 high 113%
Grafton Research Stn 25.5   38.3 20 Oct 13.6   2.2 21 Jun 1041.2 1001.8 average 104%
Lismore (Richmond Hill) 25.1   37.6 20 Oct 14.3   4.4 3 Aug 1434.4
Lismore Airport AWS 25.5   38.5 20 Oct 12.7   0.2 2 Aug 1212.6
Murwillumbah (Bray Park) 25.5 -0.2 38.4 4 Dec     2.2 2 Aug
Yamba Pilot Station 23.8 +0.5 34.8 20 Oct 15.6 +0.2 5.4 4 Jul 1728.6 1468.8 high 118%
Lower North Coast (district 59)
Coffs Harbour MO 23.6 +0.3 39.2 20 Oct 14.1 +0.1 2.2 7 Aug 1837.2 1700.3 average 108%
Dorrigo (Old Coramba Rd) 19.8   33.0 1 Dec 9.9   -1.5 24 Jun 2213.0
Kempsey (Wide Street) 24.8 -0.2 37.8 20 Oct 12.9 +0.7 1.0 7 Aug 1120.1 1216.7 average 92%
Kempsey Airport AWS 24.7   39.2 20 Oct 11.4   -1.8 7 Aug 951.0
South West Rocks (Smoky Cape Lighthouse) 23.9 +0.7 32.2 5 Oct     6.5 11 Aug 1436.5 1492.7 average 96%
Manning (district 60)
Forster - Tuncurry Marine Rescue 22.7   37.0 20 Oct 13.9   2.0 8 Aug 1294.5 1217.7 average 106%
Port Macquarie Airport AWS 23.6   39.4 20 Oct 12.7   -0.3 7 Aug 1473.8
Taree Airport AWS 23.7   38.1 20 Oct 12.5   -0.6 24 Jun 1065.9
Yarras (Mount Seaview) 24.3 +0.1 38.4 1 Dec 11.9 +0.2 1.0 4 Aug
Hunter (district 61)
Cessnock Airport AWS 24.0   40.0 30 Nov 10.1   -2.1 25 Jun 602.4
Cooranbong (Lake Macquarie AWS) 23.2   36.6 4 Jan 10.7   -2.1 8 Aug
Gosford (Narara Research Station) AWS 22.8 -0.2 35.7 1 Dec 11.0 -0.1 -0.3 8 Aug 1305.2 1328.8 average 98%
Maitland Visitors Centre 24.2   40.0 30 Nov     0.0 20 Jun 753.1
Mangrove Mountain AWS 21.8   37.5 30 Nov 10.9   0.5 7 Aug 1112.8
Merriwa (Roscommon) 23.7   40.8 1 Dec 8.3   -4.3 1 Aug 553.4 600.5 average 92%
Murrurundi Gap AWS 20.2   35.5 1 Dec 10.3   -0.1 4 Jul 692.2
Murrurundi Post Office 22.9 -0.4 38.1 1 Dec 8.0 -0.5 -4.4 4 Jul 756.4 832.6 average 91%
Nelson Bay (Nelson Head) 22.3 -0.6 33.0 20 Oct 15.4 +1.3 7.3 8 Aug
Newcastle Nobbys Signal Station AWS 21.9 +0.1 35.5 20 Oct 14.8 +0.6 6.1 24 Jun 829.6 1123.5 low 74%
Norah Head AWS 21.9   34.4 5 Oct 14.8   5.8 24 Jun 1148.4
Paterson (Tocal AWS) 24.1 +0.1 40.9 30 Nov 11.7 -0.3 1.1 8 Aug 794.6 931.6 average 85%
Scone Airport AWS 24.5 +0.4 41.7 1 Dec 9.5 -0.5 -3.4 24 Jun 527.0
Singleton STP 24.7   42.0 30 Nov     -2.4 3 Sep 559.1
Williamtown RAAF 23.5 +0.4 37.9 20 Oct 12.2 -0.2 0.9 8 Aug 971.6 1124.7 low 86%
Central Tablelands (North) (district 62)
Gulgong Post Office 23.2 +0.1 38.8 30 Nov 8.9 -0.7 -2.9 2 Aug 738.6 652.6 high 113%
Mudgee Airport AWS 22.6 +0.2 38.3 30 Nov 7.5 -0.6 -5.0 7 Aug 738.2
Central Tablelands (South) (district 63)
Bathurst Airport AWS 20.4 +0.3 36.6 30 Nov 5.8 -1.0 -6.1 8 Aug 630.6
Katoomba (Murri St) 17.4 +0.7 32.6 30 Nov 8.2 +0.2 -1.2 1 Sep 1434.8 1402.6 average 102%
Lithgow (Cooerwull) 17.9   33.7 30 Nov 6.4   -6.0 1 Sep 791.7 786.9 average 101%
Mount Boyce AWS 16.8 0.0 32.8 30 Nov 7.6 -0.3 -2.8 1 Sep 1175.8
Oberon (Springbank) 17.1 +0.2 31.0 24 Dec 5.0 -0.2 -6.1 20 Jun 819.9 843.3 average 97%
Orange Agricultural Institute 17.9 0.0 32.2 30 Nov 6.9 -0.3 -3.6 20 Jun 691.5 924.1 low 75%
Orange Airport AWS 17.6   32.6 24 Dec 5.6   -5.8 8 Jun 783.8
Springwood (Valley Heights) 22.0   37.0 24 Dec 11.6   2.2 7 Aug 1007.7 1089.9 average 92%
Central Western Slopes (North) (district 64)
Coonabarabran (Namoi Street) 23.4 -0.3 38.6 1 Dec 6.6 -0.8 -6.0 8 Aug 797.4 754.0 average 106%
Coonabarabran Airport AWS 22.1   38.2 1 Dec 10.8   0.8 1 Sep 774.8
Dunedoo Post Office 24.2 +0.3 40.8 1 Dec 9.4 -0.2 -3.8 8 Aug 551.2 615.3 average 90%
Central Western Slopes (South) (district 65)
Cowra Airport AWS 22.7   39.3 30 Nov 7.7   -4.5 1 Sep 748.9
Dubbo Airport AWS 24.5   41.7 30 Nov 9.3   -4.7 4 Jul 608.6
Forbes Airport AWS 23.8   40.4 30 Nov 8.7   -3.5 2 Aug 561.8
Parkes Airport AWS 23.3   40.5 30 Nov 8.2   -4.5 7 Aug 638.6 650.3 average 98%
Wellington (Agrowplow) 24.0 -0.3 39.4 30 Nov 8.6 -0.8 -3.8 2 Aug 581.2 616.6 average 94%
Metropolitan (East) (district 66)
Bankstown Airport AWS 23.4 +0.2 39.1 30 Nov 11.7 -0.3 0.6 4 Aug 917.0 875.3 average 105%
Canterbury Racecourse AWS 22.5   36.0 1 Dec 11.8   0.4 8 Aug 1019.0
Holsworthy Control Range 22.9   37.7 30 Nov 10.7   -0.7 5 Aug 881.8
Parramatta North (Masons Drive) 23.0 -0.3 39.3 30 Nov 11.8 -0.4 0.7 1 Sep 1081.8 969.8 high 112%
Sydney (Observatory Hill) 22.7 +1.0 34.2 5 Oct 14.4 +0.6 5.5 1 Sep 1213.6 1215.0 average 100%
Sydney Airport AMO 22.9 +0.7 36.2 1 Dec 14.3 +0.9 5.1 1 Sep 972.8 1082.8 average 90%
Sydney Harbour (Wedding Cake West) 20.6   33.3 20 Dec 15.1   7.0 1 Sep
Sydney Olympic Park AWS (Archery Centre) 23.1   37.1 1 Dec 12.5   1.7 8 Aug
Terrey Hills AWS 21.4   34.0 28 Dec 12.8   3.4 24 Jun 1277.2
Metropolitan (West) (district 67)
Badgerys Creek AWS 23.4   39.7 24 Dec 10.4   -1.1 8 Aug 903.4
Horsley Park Equestrian Centre AWS 23.1   38.6 24 Dec 11.4   0.1 7 Aug 973.8
Penrith Lakes AWS 24.1   38.8 24 Dec 11.8   0.7 8 Aug 905.4
Prospect Reservoir     38.8 30 Nov 12.0 -0.2 1.7 8 Aug 972.9 871.7 average 112%
Richmond RAAF 24.0   38.8 24 Dec 10.5   -2.4 8 Aug 824.2
Illawarra (district 68)
Albion Park (Wollongong Airport) 22.1   37.9 1 Dec 11.0   0.5 20 Jul 762.2
Bellambi AWS 20.9   32.2 28 Sep 14.3   6.1 12 Oct 1255.2
Bowral (Parry Drive) 18.3 -0.4 34.9 30 Nov 8.3 +0.4 -2.2 20 Jul 953.0 931.5 average 102%
Camden Airport AWS 23.4 -0.2 39.4 24 Dec 9.7 -0.5 -2.8 8 Aug 796.8 788.1 average 101%
Campbelltown (Mount Annan) 23.3   38.2 24 Dec 9.9   -1.2 8 Aug 776.6
Jervis Bay (Point Perpendicular AWS) 20.0   33.8 1 Dec 13.8   5.5 20 Jul 945.0
Kiama (Bombo Headland) 20.8   33.6 30 Jan 14.0   5.8 1 Sep 1043.4
Moss Vale AWS 18.2   34.6 30 Nov 7.6   -3.7 20 Jul 860.0
Nowra RAN Air Station AWS 21.9   38.3 30 Nov 10.7   2.5 5 Aug 944.8
South Coast (district 69)
Batemans Bay (Catalina Country Club) 21.1 -0.5 34.7 1 Dec 9.5 -0.5 -1.8 1 Sep 1076.9 907.3 high 119%
Bega AWS 21.7   37.9 24 Dec 8.6   -2.9 8 Aug 844.2
Braidwood Racecourse AWS 18.6 -0.6 33.8 24 Dec 5.1 -0.9 -6.7 2 Sep 760.2
Green Cape AWS 19.1   28.8 16 Oct 13.0   5.9 27 Jun 802.4
Merimbula Airport AWS 20.6   33.5 30 Jan 9.6   0.2 2 Sep 1131.8
Montague Island Lighthouse 19.0 -0.4 29.7 1 Dec 13.8 -0.1 6.1 10 Aug 909.8 884.7 average 103%
Moruya Airport AWS 20.8   36.1 1 Dec 9.5   -1.8 8 Aug 838.8
Moruya Heads Pilot Station 20.1 -0.3 34.0 1 Dec 11.2 -0.1 1.5 20 Jun 850.4 953.5 average 89%
Narooma (Marine Rescue)     32.5 30 Jan 11.4 -0.5 2.8 7 Aug 928.8 914.7 average 102%
Ulladulla AWS 20.1 -0.5 33.1 30 Jan 12.9 -0.2 4.5 1 Sep 1130.4
Southern Tablelands (Goulburn-Monaro) (district 70)
Bombala (Therry Street) 18.6 +0.2 34.7 3 Jan 4.8 0.0 -6.7 7 Jul 793.6 645.8 high 123%
Bombala AWS 17.5 -0.2 34.5 3 Jan 4.5 -0.7 -6.4 7 Jul 789.0
Canberra Airport 20.1   35.1 30 Nov 5.6   -6.8 1 Sep 695.8
Cooma Airport AWS 17.2 -0.9 32.5 29 Nov 3.3 -0.7 -9.5 20 Aug 812.4 519.3 highest 156%
Cooma Visitors Centre 18.6 -0.8 34.3 3 Jan 3.7 -0.3 -7.8 7 Jul 818.3 544.9 v high 150%
Goulburn Airport AWS 19.2 -0.4 35.1 30 Nov 5.3 -0.8 -7.6 2 Aug 739.4
Goulburn TAFE 19.2 -0.5 34.6 3 Jan 7.3 -0.2 -3.8 9 Jun 739.2 626.4 high 118%
Mount Ginini AWS 11.0   25.1 29 Nov 2.9   -6.4 10 Aug 1280.8
Taralga Post Office 18.4 +0.2 34.2 30 Nov 5.4 -0.6 -5.2 9 Jun 960.6 804.1 high 119%
Tuggeranong (Isabella Plains) AWS 20.0   34.5 29 Nov 6.0   -6.2 7 Jul 846.8
Southern Tablelands (Snowy Mountains) (district 71)
Perisher Valley AWS 10.4   24.4 25 Feb 0.9   -13.3 6 Jul 2307.8
Thredbo AWS 7.7 -0.4 21.8 29 Nov 0.6 -0.2 -9.5 2 Aug 1505.8 1431.3 high 105%
Thredbo Village 13.2 -0.3 27.0 29 Nov 2.0 +0.1 -10.0 15 Jul 2117.0 1745.7 high 121%
Southwest Slopes (South) (district 72)
Albury Airport AWS 21.9   38.9 3 Jan 8.5   -2.5 7 Jul 763.2
Cabramurra SMHEA AWS 11.8   25.5 29 Nov 4.6   -5.3 1 Sep
Hume Reservoir 21.6 +0.1 37.7 3 Jan 9.7 -0.2 -1.2 31 Jul 831.6 695.3 high 120%
Khancoban AWS 20.3   35.5 26 Jan 6.7   -3.4 6 Jul 1117.0
Tumbarumba Post Office 19.5 -0.1 33.6 3 Jan 5.3 -0.2 -6.0 7 Jul 994.8 979.6 average 102%
Wagga Wagga AMO 22.4 +0.3 39.1 23 Dec 8.4 -0.6 -3.0 1 Sep 627.2 569.4 average 110%
Southwest Slopes (North) (district 73)
Burrinjuck Dam 21.2 +0.6 37.0 9 Dec     -0.6 8 Jul 1003.9 927.8 average 108%
Cootamundra Airport 21.6   38.0 30 Dec 6.4   -5.4 1 Sep 771.2
Grenfell (Manganese Rd) 21.9 -0.6 37.1 23 Dec 8.0 -1.5 -3.0 9 Jun 612.4 622.5 average 98%
Gundagai (William St) 22.0   38.9 29 Nov 7.9   -3.6 5 Jul 667.5
Quandialla Post Office 23.5 -0.2 39.5 29 Nov 9.1 -0.6 -2.6 2 Aug 590.9 540.1 average 109%
Wyalong Post Office 23.6 +0.2 40.6 29 Nov 9.7 -0.4 -3.4 1 Aug 483.6 480.3 average 101%
Young Airport 21.7 -0.4 36.7 30 Nov 5.7 -1.4 -5.5 7 Aug 712.2
Riverina (East) (district 74)
Corowa Airport 22.5 -0.1 40.5 29 Nov 8.6 -0.3 -5.0 2 Aug 604.2 543.0 average 111%
Deniliquin Airport AWS 23.4   43.5 29 Nov 8.9   -4.9 7 Jul 316.6
Narrandera Airport 23.8   42.0 29 Nov 9.1   -3.8 7 Jul 366.2 435.1 average 84%
Tocumwal Airport 22.6 -0.3 41.7 29 Nov 9.4 -0.2 -2.9 20 Jun 545.6 449.2 high 121%
Yanco Agricultural Institute 23.7   41.6 29 Nov 10.7   -0.9 8 Jun 574.6 401.4 high 143%
Riverina (West) (district 75)
Griffith Airport AWS 23.7 -0.2 41.3 29 Nov 9.5 -0.6 -3.0 9 Jun 556.8 399.3 high 139%
Hay Airport AWS 25.0   45.0 29 Nov 8.9   -5.1 6 Jul 361.4
Hillston Airport 24.7 +0.3 42.0 29 Nov 9.7 -1.2 -3.0 7 Jul 599.0 369.2 v high 162%
Offshore Islands (district 200)
Lord Howe Island Aero 21.8 -0.3 27.4 29 Dec 16.7 -0.4 7.8 16 Oct 1985.2 1515.2 high 131%
Norfolk Island Aero 21.4 -0.1 27.0 23 Feb 16.6 +0.3 11.4 10 Jul 1279.8 1300.9 average 98%

Notes

As of December 2012, temperature averages are derived from the new ACORN-SAT high-quality dataset, which has monthly temperature data back to 1910. Some inconsistency will be apparent with monthly summaries prior to December 2012; historical climate data based on this dataset is available here.

A Annual Climate Summary is prepared to list the main features of the weather in New South Wales using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

This statement has been prepared based on information available at 9 am on Wednesday 2 January 2013. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages are long-term means based on observations from all available years of record, which vary widely from site to site. They are not shown for sites with less than 20 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average rain.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (very low rainfall is in decile 1, low in decile 2 or 3, average in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a percentage of the long-term mean.

Further information

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