NSW in 2011: Wet, warm year as La Niña ends and another begins

  • La Niña brings 4th wettest two-year period on record for NSW
  • Close to average maximum and minimum temperatures
  • 15th consecutive warm year for NSW
  • Record-breaking February heatwave along the coast
  • Severe storms, East Coast Lows and floods throughout the year

Rainfall - La Niña brings 4th wettest two-year period on record for NSW

NSW recorded 660.9 mm of rain during 2011, above the historical average of 552.8 mm and the 12th wettest on record. This is substantially drier than 2010 (815.1 mm), but otherwise the wettest year since 689.4 mm fell in 1988. The 2010-2011 period was the 4th wettest on record for NSW, following similar La Niña events in 1973-1974, 1955-1956, and 1949-1950. The Murray-Darling Basin recorded 592.1 mm during 2011, above the historical average of 493.4 mm and the 13th wettest on record. Rainfall was heaviest in western NSW, mostly associated with record-breaking rainfall in this region between January and March, with the wettest year in Broken Hill since 1974. Rainfall was also well above average in the northeast, while central NSW was closer to average.

The high rainfall during 2011 was associated with the lingering impacts of the strong 2010 La Niña event, in addition to a weak La Niña which developed towards the end of the year. January-March was the wettest start to a year on record in southwestern NSW, with several flooding events across the state. Conditions were closer to average during the middle of the year, with below average rainfall in southern NSW between April and September and the driest winter since 2002 in the Murray-Darling Basin. In contrast, several East Coast Low events continued to bring substantial rain to coastal NSW throughout the winter. Rain increased towards the end of the year as a second weak La Niña event developed in the Pacific, with the 7th wettest November on record and continued above average falls during December.

Some sites had their highest total rainfall on record. Some sites had their highest daily rainfall on record. See a map of rainfall deciles.

Temperature - 15th consecutive warm year for NSW

The average maximum temperature in NSW was 0.3 °C above average during 2011, warmer than 2010 but otherwise the coolest year since 2000. Temperatures were generally within 1 °C of average across the state, despite the increased rainfall during the year, with coolest conditions along the coast. Temperatures were particularly cool as the 2010 La Niña broke down during autumn, which was the 10th coolest on record and the coolest since 1995, while temperatures were well above average between July and September under drier conditions as well as a weak positive Indian Ocean Dipole event.

Very cold conditions returned during December, which was the 4th coolest on record for NSW, as well as the 3rd coldest for maximum temperatures, which were 2.5 °C below average. This was associated with cloudy conditions, cool southerly winds, and a lack of hot days. The average temperature in December was 28.1 °C, almost 1 °C lower than recorded in November. November has been warmer than December on only three previous occasions, most recently in 2009 when November was 5 °C above average. Interestingly, five days during November had temperatures above 40 °C recorded somewhere in NSW, compared to just two days in December.

NSW recorded an average minimum temperature of 11.0 °C during 2011, 0.3 °C above the historical average. Temperatures were warm during the first part of the year, particularly along the coast, with well above average temperatures in January and February. This included a record 5 consecutive nights above 24 °C in Sydney between the 2nd and 6th of February. Nights were also very warm during August, while November was the 6th warmest on record for minimum temperatures. In comparison, nights were cold during the middle of 2011, including the 4th coldest May on record for NSW, while December was 0.9 °C below average.

The statewide average temperature in NSW was consequently 0.3 °C above average at 17.6 °C, the 15th consecutive warm year for NSW.

Some sites had their highest temperature on record. Some sites had their coldest day (lowest maximum temperature) on record. Some sites had their warmest night (highest daily minimum temperature) on record.

See a map of maximum temperature anomalies. See a map of minimum temperature anomalies.

Other phenomena

Heatwave

A heatwave impacted the Metropolitan and Central Coast areas between January 28 and February 6, with record-breaking minimums at several locations including Sydney Observatory Hill. Several records for extended periods of warm nights were also broken during this week, including five consecutive nights above 24 °C at Observatory Hill.

East Coast Low

June: An East Coast Low from 12 -16 June caused heavy rain and strong winds along the North Coast, with gusts reaching 102 km/hr at Murrurundi Gap and daily falls as high as 250 mm at Woolgoolga, as well as a tornado at Red Rock. Six communities were evacuated and 16,000 people isolated in the Kempsey and Taree regions, with Natural Disasters declared in 20 Local Government Areas (LGAs) during the month.

July: An East Coast Low off the Central Coast caused significant rain between 20 - 23 July, with four-day totals as high as 296 mm at Castle Cove in Sydney and 248 mm at Newcastle, causing the wettest July since at least 1952.

Storms and Flooding

January - February: Heavy rain on the far north coast over the end of December and early January led to flooding from the QLD border to Grafton, with hundreds of people evacuated and thousands isolated during the first two weeks of January. The slow progression of water through the Murray and Darling rivers further impacted western NSW during late January and February. Additionally, trough systems between 12-14 January and 2-6 February brought further heavy rain in western and southern NSW, with record-breaking daily falls in several locations and further riverine flooding.

March: Very severe rainfall associated with a low pressure trough reached 398 mm at Mt Darragh on the 22nd, the highest daily falls since the 1980s. This caused flash flooding in the Sydney Metropolitan region on March 20 followed by widespread flooding in the Illawarra and South Coast regions from the 22nd, including major flooding of the Bega river and the closure of major roads and rail services.

July: Very strong winds were recorded in the Southern and Central Tablelands from 5 - 11 July, reaching 139 km/hr at Mt Boyce on the 5th, its strongest gust since records began in 2003, and 146 km/hr at Thredbo on the 10th. The winds were associated with blizzard conditions in the Snowy Mountains and moderate damage in the Tablelands, including damage to property from falling trees in the Blue Mountains and interruptions to power and train lines. 2500 Requests for Assistance were received by the SES during this event, with 8 LGAs declared Natural Disaster regions during the month.

November: A low pressure trough caused heavy rainfall across NSW between the 22nd and 26th of November, particularly in the northeast, with daily falls as high as 190.5 mm at Gwyder River (Gravesend Rd Bridge) on the 26th, resulting in a 4-day total of 302 mm. The heavy rain triggered flooding in northeastern NSW, including significant flooding around the major centres of Gunnedah and Moree, with riverine flooding persisting over the following weeks.

Further information

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Extremes in 2011
Hottest day 45.8 °C at Condobolin Ag Research Stn on 26 Jan
Warmest days on average 27.9 °C at Mungindi Post Office
Coolest days on average 10.7 °C at Perisher Valley AWS
Coldest day -4.6 °C at Thredbo AWS on 11 May
Coldest night -16.0 °C at Charlotte Pass (Kosciusko Chalet) on 27 Jul
Coolest nights on average 1.4 °C at Perisher Valley AWS
Warmest nights on average 17.2 °C at Lord Howe Island Aero
Warmest night 29.6 °C at Tibooburra Airport on 26 Jan
29.6 °C at Tibooburra Post Office on 26 Jan
Warmest on average overall 21.0 °C at Tibooburra Post Office
Coolest on average overall 6.1 °C at Perisher Valley AWS
Wettest overall 2840.0 mm at Bowra Sugarloaf
Wettest day 397.8 mm at Cathcart (Mount Darragh TM) on 22 Mar
Highest wind gust 146 km/h at Thredbo AWS on 10 Jul

Maps
Observed Anomaly Decile 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 for all of Australia Map of Anomaly in mean maximum temperature for all of Australia Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature for all of Australia Map of Anomaly in mean minimum temperature for all of Australia 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 brought record-breaking rain to western NSW between the 11th and 14th, with many stations recording daily totals more than double the previous January record. Significant rainfall and flooding also affected the North Coast between the 6th & 7th, while record-breaking warm nights affected the east coast.
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 again featured record-breaking rain in southern and western NSW, in particular associated with heavy rain between the 2nd and 6th. The same system caused a heatwave along the east coast, particularly in the Metropolitan and Hunter regions, including a record 5 consecutive nights above 24 °C at Sydney Observatory Hill.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
March again featured heavy rainfall in southern and western NSW, the wettest start to a year on record at stations including Broken Hill. The rain also caused very cool days in the southwest, with March the coolest for NSW since 1994 and the 9th coolest on record. Heavy rain was also recorded along the south coast, with 398 mm at Mt Darragh and substantial flooding near Bega.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
April was closer to average in NSW, with persistent rain in coastal areas but a lack of significant rain events, while southerly winds continued to drive cool air into the state.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
May continued the spell of average rainfall and cool temperatures, with record-breaking cold across much of the state and the 4th coldest on record for NSW as a whole. Temperatures were particularly cold in the Snowy Mountains on the 10th, with up to 15cm of snow reported by major ski resorts.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
June was a very dry month for inland NSW, with almost no rainfall recorded in the northwest of the state. The east coast experienced near-record rainfall associated with an East Coast Low between the 12th and 16th, including substantial flooding and a small tornado at Red Rock.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
July featured continued dry conditions in inland NSW, particularly in the northern tablelands, while an East Coast Low between the 20th and 23rd caused record-breaking rain in the Metropolitan and Central Coast regions. Strong winds also hit NSW between the 5th and 10th of July, associated with blizzard conditions in the Snowy Mountains and moderate damage in the Tablelands. Snow levels at Spencers Creek reached 159 cm during the first week of July, the highest levels for early July since 1990.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
August was the 6th warmest on record for NSW maximum and minimum temperatures, with most of the state in the top 10% of years, although cooler than August 2009. Temperatures were particularly warm in the Snowy Mountains, including the warmest on record at Charlottes Pass, with no increase in snow 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 featured a return to wetter conditions, particularly in northern NSW, while maximum temperatures remained well above average. Widespread thunderstorm activity also affected the state on the 28th and 29th, while severe thunderstorms caused minor damage in northern NSW on the 24th and 25th.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
October was close to average in NSW, with no significant weather events.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
November was the 7th wettest on record in NSW, with a particularly heavy rain event between the 22nd and 26th that triggered substantial flooding in the northeast. Temperatures were also well above average, including the 6th warmest November on record for minimum temperatures.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
December was the 4th coldest on record for NSW, with maximum temperatures 2.5 °C below the historical average associated with cool southerly winds and above average cloudiness during the month. Almost half the state experienced their coldest December days on record during the month, particularly in the north and east.
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 annual daily rainfall
Highest daily rainfall
in 2011 (mm)
Previous annual
wettest
Years of
record
Gum Lake (Albemarle) 116.6 on 14 Jan 93.5 on 1 Apr 1931 127
Wymah (Gwandallen) 88.0 on 5 Feb 86.4 on 20 Jan 1956 100
Oxley (Walmer Downs) 118.0 on 5 Feb 95.0 on 4 Jan 1941 90
Booroorban (Ramsay) 94.6 on 19 Dec 86.1 on 7 Dec 1930 87
Cathcart (Mount Darragh) 378.0 on 22 Mar 368.8 on 6 Feb 1971 87
Wentworth (Willow Point) 113.0 on 6 Feb 111.3 on 11 Dec 1954 79
Temora Research Station 126.4 on 3 Feb 119.0 on 24 Mar 1982 78
Euston ( Benington) 117.0 on 14 Jan 98.0 on 18 Jan 1946 77
Euston (Sunnyside) 120.0 on 5 Feb 80.0 on 20 Apr 1990 70
Broken Hill (Koonawarra) 124.0 on 13 Jan 103.6 on 25 Jan 1982 66
Toorooka (Moparrabah) 226.0 on 2 Mar 200.4 on 10 Mar 2001 57
Euston (Turlee) 110.0 on 14 Jan 67.1 on 17 Nov 1961 52
Upper Rouchel (Mount View) 228.0 on 16 Jun 163.6 on 25 Jan 1976 51
Carrabolla (Woodbury) 223.4 on 16 Jun 189.6 on 20 Mar 1978 47
Tidbinbilla Nature Reserve 200.0 on 26 Nov 134.4 on 21 Jan 1995 46
Milparinka (Milpa) 103.0 on 13 Jan 97.6 on 9 Feb 1976 45
Euston (Prungle) 96.0 on 14 Jan 93.4 on 28 Nov 2010 42
Hopefield (Barnweal) 109.4 on 5 Feb 57.9 on 23 Feb 1969 38
Guyra Hospital 105.0 on 24 Nov 90.4 on 2 Feb 2005 31
Albury Airport 100.0 on 5 Feb 96.6 on 28 Apr 1992 29
Hollisdale (Pappinbarra Rd) 156.0 on 13 Jun 136.0 on 5 Mar 1995 29
Charlotte Pass (Kosciusko Chalet) 525.0 on 30 Oct 171.0 on 31 May 1999 26
Paringi(Kerribee) 173.0 on 5 Feb 75.0 on 21 Feb 2000 22
Boonoo Boonoo (Currawong) 151.6 on 11 Jan 126.2 on 5 Jan 2008 20
Brogo Dam 273.0 on 22 Mar 211.2 on 6 Dec 1992 20



Record highest total annual rainfall
Total rainfall
for 2011 (mm)
Previous annual
wettest
Years of
record
Annual
average
Paringi(Kerribee) 669.7 538.1 in 1973 47 291.8
Bowmans Creek (Grenell) 1239.4 1185.8 in 1998 42 870.6
Wentworth (Tarawi) 664.0 557.5 in 1973 36 279.7
Coleambally Irrigation 641.5 633.1 in 1989 27 419.3
Guyra Hospital 1179.3 1161.1 in 1996 27 931.2



Record highest annual temperature
Highest temperature
in 2011 (°C)
Previous annual
warmest
Years of
record
Annual
average
Norfolk Island Aero 28.4 on 4 Mar = 28.4 on 11 Feb 1996 73 21.5
Scone SCS 43.5 on 27 Jan = 43.5 on 2 Feb 2006 47 24.1



Record lowest annual daily maximum temperature
Lowest daily maximum
temperature
in 2011 (°C)
Previous annual
coolest
Years of
record
Annual
average
Goulburn TAFE 3.9 on 8 Jun 4.2 on 9 Jul 1986 39 19.7



Record highest annual daily minimum temperature
Highest daily minimum
temperature
in 2011 (°C)
Previous annual
warmest
Years of
record
Annual
average
Sydney (Observatory Hill) 27.6 on 6 Feb 26.6 on 6 Feb 1973 153 13.8
Sydney Airport AMO 26.4 on 6 Feb 25.8 on 23 Jan 2010 73 13.4
Williamtown RAAF 26.9 on 6 Feb 25.7 on 10 Jan 1983 63 12.4
Newcastle Nobbys Signal Station AWS 26.0 on 6 Feb 25.5 on 15 Jan 1978 55 14.2
Dunedoo Post Office 28.3 on 3 Feb 27.5 on 11 Feb 2004 46 9.6
Bankstown Airport AWS 26.0 on 2 Feb 25.0 on 8 Dec 1990 44 12.0
Camden Airport AWS 24.0 on 3 Feb = 24.0 on 23 Dec 2000 38 10.2
Riverview Observatory 26.2 on 6 Feb 25.7 on 22 Dec 1997 30 12.3



Summary statistics for 2011
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean
for
2011
Diff
from
average
Highest
for
2011
Mean
for
2011
Diff
from
average
Lowest
for
2011
Total
for
2011
Average
annual
total
Rank
of
2011
Fraction
of annual
average
Western (Far Northwest) (district 46)
Fowlers Gap AWS 26.1   42.3 25 Jan 12.3   -1.8 8 Jul 526.2
Tibooburra Airport 27.6   43.9 26 Jan 14.2   0.6 10 Jun 254.0
Tibooburra Post Office 27.6 +0.2 44.6 26 Jan 14.4 +0.5 0.4 9 Jul 373.2 226.5 high 165%
White Cliffs AWS 26.8   42.8 1 Jan     -0.9 9 Jul 457.2
Wilcannia (Reid St) 26.5 -0.1 42.7 1 Jan 11.8 -0.2 -3.7 12 Jul 506.5 262.7 v high 193%
Wilcannia Aerodrome AWS 26.5   42.9 1 Jan 11.5   -3.0 12 Jul 495.6
Western (Lower Darling) (district 47)
Broken Hill Airport AWS 24.3 -0.1 42.0 1 Jan 11.4 -0.3 -2.0 12 Jul 465.0 253.5 v high 183%
Lake Victoria Storage 24.2 +0.5 42.4 1 Feb     -1.9 23 Jul 478.4 263.7 v high 181%
Menindee Post Office     42.8 1 Jan 12.5 +1.2 0.2 12 Jul 484.3 244.7 v high 198%
Pooncarie Mail Agency 25.7   44.1 1 Jan 11.7   -1.0 12 Jul 521.5 269.5 v high 194%
Western (Upper Darling) (district 48)
Bourke Airport AWS 27.4   44.9 26 Jan     -2.9 9 Jun
Cobar Airport AWS 25.5   44.3 26 Jan 11.7   -4.3 9 Jun 359.6
Cobar MO 25.6 +0.4 44.3 26 Jan 12.7 -0.1 -2.0 9 Jun 311.4 401.0 average 78%
Lightning Ridge Visitors Information Cen 27.6   44.0 26 Jan 13.8   -2.0 10 Jun 452.9
Wanaaring Post Office 27.8   45.5 26 Jan 12.9   -2.9 25 Jun 434.6 281.0 high 155%
Western (Southwest Plains) (district 49)
Balranald (RSL) 24.0 -0.3 41.0 1 Feb 10.6 +0.6 -1.0 8 Jul 588.3 324.6 v high 181%
Ivanhoe Aerodrome AWS 25.6   42.7 1 Jan 11.5   -2.2 15 Jul
Ivanhoe Post Office 26.1 +0.2 42.6 1 Jan 10.7 0.0 -3.0 12 Jul 437.5 305.3 high 143%
Central Western Plains (South) (district 50)
Condobolin Airport AWS 24.5   44.9 26 Jan 10.2   -4.2 15 Jul
Peak Hill Post Office 24.4 0.0 42.4 26 Jan 12.3 +0.3 -1.5 8 Jul 560.5 562.7 average 100%
West Wyalong Airport AWS 23.6   41.8 26 Jan 9.2   -3.1 8 Jul 663.2
Central Western Plains (North) (district 51)
Coonamble Airport AWS 26.2   43.0 27 Jan 11.4   -3.5 9 Jul
Nyngan Airport 25.9 +0.2 45.3 26 Jan 12.0 +0.3 -1.1 9 Jun 532.2 446.7 high 119%
Northwest Plains (West) (district 52)
Mungindi Post Office 27.9 +0.2 42.7 25 Jan 13.3 +0.5 -1.6 10 Jun 647.7 507.6 high 128%
Walgett Airport AWS 27.4   43.7 26 Jan 11.7   -3.5 28 Jul 382.2
Northwest Plains (East) (district 53)
Moree Aero 26.1   41.4 26 Jan 12.5   -3.2 12 Jul 836.8
Northwest Slopes (North) (district 54)
Barraba Post Office 24.5 +0.1 40.4 26 Jan 8.0 -0.3 -7.0 9 Jul 892.3 691.1 high 129%
Northwest Slopes (South) (district 55)
Gunnedah Resource Centre 24.8 +0.3 40.4 26 Jan 12.6 +0.5 -0.9 12 Jul 598.2 641.9 average 93%
Quirindi Post Office 24.7 +0.1 41.4 27 Jan 9.3 +0.4 -4.7 9 Jul 556.8 685.0 low 81%
Tamworth Airport AWS 24.4   40.6 26 Jan 9.4   -6.6 9 Jul 778.6
Woolbrook (Danglemah Road) 19.8 -0.7 36.0 26 Jan 5.7 +0.2 -9.5 9 Jul 944.5 786.6 high 120%
Northern Tablelands (West) (district 56)
Armidale (Tree Group Nursery) 19.2   34.4 26 Jan 6.4   -7.7 12 Jul 1048.0
Armidale Airport AWS 18.3   33.1 27 Jan 7.4   -5.1 15 May 1060.4
Glen Innes Ag Research Stn 19.1 -0.4 33.0 26 Jan 7.3 -0.1 -7.5 12 Jul 932.9 845.6 average 110%
Glen Innes Airport AWS 19.0   32.3 26 Jan 6.1   -11.1 12 Jul 1185.8
Glen Innes Post Office 19.8 -0.4 34.4 26 Jan 8.2 +0.9 -6.2 12 Jul
Guyra Hospital 17.0 -0.6 32.1 26 Jan 6.6 +0.1 -5.6 9 Jun 1179.3 931.2 highest 127%
Inverell (Raglan St) 23.2   37.3 26 Jan 7.6   -7.2 10 Jul 1051.8
Inverell Research Centre 22.5 -0.2 36.5 26 Jan 10.1 -0.2 -3.7 10 Jul 1088.2 802.4 v high 136%
Tenterfield (Federation Park) 20.5 -0.9 33.5 20 Feb 7.6 -0.4 -7.5 12 Jul 965.9 852.1 high 113%
Northern Tablelands (East) (district 57)
Tabulam (Muirne) 21.5 -0.7 33.4 20 Feb     0.3 10 Jul 1622.1 1271.9 high 128%
Upper North Coast (district 58)
Ballina Airport AWS 24.2   33.8 20 Feb 14.3   2.1 12 Jul
Byron Bay (Cape Byron AWS) 23.2   32.4 25 Mar 16.7   8.9 10 Jun 1400.2
Casino Airport 25.5 -1.3 37.3 20 Feb 13.7 +0.5 3.0 8 Jul 1003.1 1097.4 average 91%
Casino Airport AWS 25.1   37.0 20 Feb 13.6   2.4 8 Jul 977.4
Evans Head RAAF Bombing Range AWS 23.9   37.0 1 Mar 15.2   4.2 10 Jun 1919.6
Grafton Airport AWS 24.9   37.6 20 Feb 12.7   -1.8 9 Jul 1394.4
Grafton Olympic Pool 25.5 -0.3 38.1 20 Feb 13.9 +0.2 -0.3 9 Jul 1290.6 1074.3 high 120%
Grafton Research Stn 24.9   37.4 20 Feb 14.0   -1.1 9 Jul 1271.2 1001.0 high 127%
Lismore (Richmond Hill)     35.7 20 Feb 14.3   3.7 13 Jul 1403.6
Lismore Airport AWS 25.1   37.0 20 Feb 12.9   -0.8 10 Jul 1241.8
Murwillumbah (Bray Park)     35.5 1 Mar 14.5 +0.1 0.6 10 Jul 1636.9 1610.6 average 102%
Lower North Coast (district 59)
Coffs Harbour MO 23.3 0.0 33.7 6 Feb 14.2 +0.2 0.6 9 Jul 2294.0 1698.0 high 135%
Dorrigo (Old Coramba Rd) 19.1   32.5 6 Feb 9.8   -2.3 9 Jun 2521.2
Kempsey (Wide Street) 24.4 -0.7 38.7 20 Feb 13.3 +1.1 1.8 9 Jul 1572.6 1217.5 high 129%
Kempsey Airport AWS 24.3   38.2 20 Feb 12.1   -0.9 9 Jul 1281.6
South West Rocks (Smoky Cape Lighthouse) 23.5 +0.3 34.3 1 Mar     6.9 9 Jun 1952.8 1493.0 high 131%
Manning (district 60)
Forster - Tuncurry Marine Rescue 22.4   33.5 1 Mar 13.8   4.2 9 Jul 1697.6 1221.2 v high 139%
Port Macquarie Airport AWS 23.2   36.0 20 Feb 13.0   -1.0 12 Jul 2009.4
Taree Airport AWS 23.5   37.9 6 Feb 13.0   0.0 9 Jul 1555.4
Yarras (Mount Seaview) 23.5 -0.8 39.2 5 Feb 12.4 +0.7 0.0 10 Aug 2726.6 1700.1 v high 160%
Hunter (district 61)
Cessnock Airport AWS 23.6   43.1 26 Jan 11.0   -3.2 16 May 939.0
Cooranbong (Lake Macquarie AWS) 23.3   40.9 1 Feb 11.4   -0.1 30 Jul 1374.4
Gosford (Narara Research Station) AWS 22.8 -0.2 41.2 5 Feb     1.1 16 May 1953.6 1329.1 v high 147%
Maitland Visitors Centre 24.2   41.4 5 Feb 11.9   -0.4 16 May 1137.0
Mangrove Mountain AWS 21.4   38.9 5 Feb 11.5   0.8 15 May 1441.6
Merriwa (Roscommon) 23.4   41.5 26 Jan 8.9   -4.2 30 Jul 592.6 601.8 average 98%
Murrurundi Gap AWS 19.8   36.9 26 Jan 10.5   -1.9 9 Jun 695.8
Murrurundi Post Office 22.4 -1.0 38.8 26 Jan 8.9 +0.4 -4.5 15 May 713.0 833.2 low 86%
Nelson Bay (Nelson Head) 22.5 -0.4 38.5 3 Feb 15.7 +1.7 8.0 9 Jun 1520.1 1348.5 high 113%
Newcastle Nobbys Signal Station AWS 22.1 +0.3 39.1 3 Feb 15.3 +1.1 6.8 9 Jun 1009.0 1125.6 average 90%
Norah Head AWS 22.2   39.7 3 Feb 15.1   5.6 9 Jul 1425.8
Peats Ridge (Waratah Road) 21.3 -0.6 38.8 5 Feb     2.9 9 Jul 1674.4 1258.5 high 133%
Scone Airport AWS 23.7   42.5 26 Jan 10.2   -2.9 15 May 677.8
Singleton STP 24.2   42.5 26 Jan     -3.0 16 May 784.7
Williamtown RAAF 23.7 +0.7 42.9 5 Feb 12.9 +0.5 2.0 30 Jul 1250.8 1127.1 high 111%
Central Tablelands (North) (district 62)
Gulgong Post Office 22.9 -0.2 40.7 26 Jan 9.7 +0.1 -2.8 16 May 699.6 651.9 average 107%
Mudgee Airport AWS 22.1   38.7 26 Jan 8.4   -5.8 16 May 577.4
Nullo Mountain AWS 15.8   33.1 26 Jan 8.1   -3.0 8 Jul 947.2
Central Tablelands (South) (district 63)
Bathurst Agricultural Station 20.1 +0.3 36.7 26 Jan 6.6 -0.2 -6.1 29 Jul 731.4 639.0 high 114%
Bathurst Airport AWS 19.9   35.7 26 Jan 6.7   -5.5 15 Jul 753.6
Katoomba (Murri St) 16.8 +0.1 34.4 31 Jan 8.7 +0.7 -2.1 15 Jul 1621.0 1404.1 high 115%
Lithgow (Cooerwull) 17.6   34.8 26 Jan 7.0   -5.9 15 May 880.1 786.8 high 112%
Mount Boyce AWS 16.2   33.9 31 Jan 8.1   -1.8 8 Jul 1160.4
Oberon (Springbank) 16.4 -0.5 33.3 31 Jan 5.8 +0.6 -5.2 8 Jun 718.0 843.4 average 85%
Orange Agricultural Institute 17.6 -0.3 33.4 26 Jan 7.4 +0.2 -4.0 7 Jun 958.7 930.4 average 103%
Orange Airport AWS 17.5   33.9 26 Jan 6.2   -6.2 16 May
Springwood (Valley Heights) 21.6   38.8 1 Feb 11.9   0.9 9 Jul 1006.4 1090.6 average 92%
Central Western Slopes (North) (district 64)
Coonabarabran (Namoi Street) 23.3 -0.4 40.4 26 Jan 7.3 -0.1 -5.8 17 May 631.5 753.5 average 84%
Dunedoo Post Office 23.9 0.0 42.6 26 Jan 10.2 +0.6 -4.3 12 Jul 568.4 615.9 average 92%
Central Western Slopes (South) (district 65)
Dubbo Airport AWS 24.2   42.6 26 Jan 10.1   -3.5 12 Jul 577.2
Forbes Airport AWS 24.1   45.2 26 Jan 9.0   -4.6 8 Jul 618.0
Parkes (Macarthur Street) 23.8 +0.4 42.0 26 Jan 10.8 -0.1 -2.5 15 Jul 715.0 585.0 high 122%
Parkes Airport AWS 22.8   41.9 26 Jan 8.8   -4.7 8 Jul 783.0 650.8 high 120%
Wellington (Agrowplow) 24.0 -0.3 41.8 26 Jan 9.6 +0.2 -4.0 8 Jul 614.5 616.8 average 100%
Metropolitan (East) (district 66)
Bankstown Airport AWS 23.1 -0.1 41.6 1 Feb 12.4 +0.4 0.6 8 Jul 884.6 874.3 average 101%
Canterbury Racecourse AWS 22.7   41.0 1 Feb 12.4   0.9 8 Jul
Holsworthy Control Range 23.0   41.7 1 Feb 11.4   -1.8 8 Jul
Parramatta North (Masons Drive) 23.0 -0.3 41.0 1 Feb 12.4 +0.2 1.0 9 Jul 1141.7 967.3 high 118%
Riverview Observatory 22.5 +0.3 41.3 5 Feb 13.2 +0.9 2.9 8 Jul 1316.1 1133.1 high 116%
Sydney (Observatory Hill) 22.6 +0.9 41.5 5 Feb 14.8 +1.0 5.5 8 Jul 1369.2 1215.0 high 113%
Sydney Airport AMO 22.6 +0.4 42.2 5 Feb 14.7 +1.3 5.4 15 Jul 1248.6 1084.2 high 115%
Sydney Harbour (Wedding Cake West) 20.9   39.4 5 Feb 15.5   7.8 15 Jul
Terrey Hills AWS 21.2   40.3 1 Feb 13.0   1.9 9 Jul 1404.2
Metropolitan (West) (district 67)
Badgerys Creek AWS 23.5   41.5 1 Feb 11.0   -1.7 12 Jul 734.0
Horsley Park Equestrian Centre AWS 23.1   41.9 1 Feb 12.0   0.1 8 Jul 755.6
Penrith Lakes AWS 24.0   41.8 1 Feb 12.4   -0.3 9 Jul 704.6
Prospect Reservoir 23.0 -0.2 41.3 1 Feb 12.4 +0.2 0.8 8 Jul 829.2 870.6 average 95%
Richmond RAAF 23.4   40.0 5 Feb 11.3   -3.1 9 Jul 729.8
Illawarra (district 68)
Bellambi AWS 21.0   39.5 5 Feb 14.8   6.6 7 Jun
Bowral (Parry Drive) 18.0 -0.8 34.9 31 Jan     -0.6 15 Jul 832.0 931.4 average 89%
Camden Airport AWS 23.4 -0.2 41.3 1 Feb 10.5 +0.3 -2.1 8 Jul 757.4 787.9 average 96%
Campbelltown (Mount Annan) 23.4   40.6 5 Feb 10.6   -2.0 8 Jul 702.8
Jervis Bay (Point Perpendicular AWS) 20.3   38.3 5 Feb 14.3   6.5 8 Jul 1271.0
Kiama (Bombo Headland) 20.7   39.3 5 Feb 14.6   7.1 7 Jun 1351.4
Moss Vale AWS 17.9   35.5 31 Jan 8.2   -3.8 15 Jul
Nowra RAN Air Station AWS 21.6   40.5 1 Feb 11.8   2.2 15 Jul 1014.2
South Coast (district 69)
Batemans Bay (Catalina Country Club) 21.1   41.2 1 Feb 10.5   -2.3 8 Jul 905.6
Braidwood Racecourse AWS 18.7   37.1 31 Jan 5.9   -8.0 15 Jul 678.0
Merimbula Airport AWS 20.8   41.3 1 Feb 10.3   -0.8 10 Jul 747.2
Montague Island Lighthouse 19.4 0.0 35.5 1 Feb 14.3 +0.5 7.0 8 Jul 804.0 884.2 average 91%
Moruya Airport AWS 21.0   42.1 1 Feb 10.5   -3.9 8 Jul 834.8
Moruya Heads Pilot Station 20.3 -0.1 40.2 1 Feb 12.1 +0.8 2.0 8 Jul
Narooma (Marine Rescue) 19.9 0.0 39.8 1 Feb 12.3   2.0 8 Jul 930.3 914.5 average 102%
Ulladulla AWS 20.1   40.0 1 Feb 13.5   3.7 8 Jul 1165.4
Southern Tablelands (Goulburn-Monaro) (district 70)
Bombala (Therry Street) 18.5 +0.1 38.5 31 Jan 5.6 +0.8 -6.7 30 Jul 832.8 644.6 high 129%
Bombala AWS 16.8   38.3 31 Jan 5.4   -6.8 1 Jul 885.4
Canberra Airport 20.3   37.5 31 Jan 6.3   -8.0 29 Jul 580.1
Cooma Airport AWS 17.4   35.3 31 Jan 4.3   -10.8 29 Jul 655.4 506.5 high 129%
Cooma Visitors Centre 18.9 -0.5 38.0 31 Jan 4.4 +0.4 -10.0 8 Jul 678.3 540.9 high 125%
Goulburn Airport AWS 19.1   37.1 26 Jan 6.1   -8.1 15 May 474.0
Goulburn TAFE 19.2 -0.5 37.9 26 Jan 7.9 +0.4 -3.6 15 Jul 518.6 623.2 low 83%
Mount Ginini AWS 10.8   28.0 31 Jan 3.2   -6.6 15 Jul 1382.0
Taralga Post Office 18.2 +0.1 36.6 31 Jan 6.3 +0.3 -4.5 15 May 728.1 802.8 average 91%
Tuggeranong (Isabella Plains) AWS 20.1   37.6 31 Jan 7.2   -8.2 29 Jul 899.8
Southern Tablelands (Snowy Mountains) (district 71)
Perisher Valley AWS 10.7   25.2 31 Jan 1.4   -10.8 15 Jul
Thredbo Village 13.5 0.0 30.5 31 Jan 2.6 +0.7 -10.0 15 Jul 2047.9 1743.1 high 117%
Southwest Slopes (South) (district 72)
Albury Airport AWS 21.7   39.8 1 Feb 9.3   -1.6 15 Jul 874.0
Cabramurra SMHEA AWS 12.0   28.5 31 Jan 5.0   -5.5 15 Jul 1322.8
Hume Reservoir     39.4 1 Feb 10.4 +0.5 -0.6 11 Jun 926.0 696.4 high 133%
Khancoban AWS 20.3   38.8 1 Feb 7.3   -3.8 29 Jul 1203.8
Tumbarumba Post Office 19.5 -0.1 36.6 31 Jan 6.2 +0.7 -6.0 15 Jul 1271.3 979.4 high 130%
Wagga Wagga AMO 22.3 +0.2 40.7 1 Feb 9.1 +0.1 -4.7 8 Jul 718.4 568.5 high 126%
Southwest Slopes (North) (district 73)
Burrinjuck Dam 20.9 +0.3 38.5 1 Feb 9.9 +0.8 -0.5 30 Jul 1078.6 927.0 high 116%
Cootamundra Airport 21.7   39.0 26 Jan 7.6   -5.0 11 Jun 769.7
Grenfell (Manganese Rd) 22.2 -0.3 40.5 26 Jan 8.9 -0.6 -3.4 15 Jul 805.7 622.6 high 129%
Gundagai (William St) 21.9   40.0 1 Feb 8.6   -3.1 15 Jul 845.3
Quandialla Post Office 23.4 -0.3 41.0 26 Jan 10.1 +0.4 -2.8 8 Jul 719.9 539.3 high 133%
Temora Airport 22.7   40.8 1 Feb 8.6   -4.0 17 May 702.2
Wyalong Post Office 23.6 +0.2 42.0 26 Jan 10.4 +0.3 -1.7 7 Jun 592.4 480.3 high 123%
Young Airport 21.4   38.0 1 Feb 7.1   -6.0 8 Jul 686.6
Riverina (East) (district 74)
Corowa Airport 22.4 -0.2 40.4 31 Jan 9.1 +0.2 -2.4 11 Jun 848.1 542.5 v high 156%
Deniliquin Airport AWS 23.1   41.1 1 Feb 9.4   -2.2 28 Jun 481.4
Narrandera Airport 23.9   42.3 1 Feb 9.8   -2.8 17 May 496.4 436.8 average 114%
Narrandera Golf Club 23.5 +0.2 41.0 1 Feb 9.6 -0.4 -3.5 30 Aug 567.9 485.7 high 117%
Tocumwal Airport 22.6 -0.3 41.3 31 Jan 9.8 +0.2 -0.9 28 Jul 655.7 448.3 v high 146%
Yanco Agricultural Institute 23.7   41.8 1 Feb 11.0   -0.9 8 Jul 591.2 398.2 v high 148%
Riverina (West) (district 75)
Griffith Airport AWS 24.2 +0.3 42.5 1 Feb 10.5 +0.4 -2.7 8 Jul 489.8 395.8 high 124%
Hay (Miller Street) 24.5 +0.2 40.7 1 Feb 10.4 +0.4 -2.3 11 Jun 649.8 369.0 v high 176%
Hay Airport AWS 24.8   41.5 1 Feb 9.6   -3.9 11 Jun 601.2
Hillston Airport 25.2 +0.9 42.0 1 Jan 10.6 -0.4 -3.0 8 Jul 476.6 367.3 high 130%
Offshore Islands (district 200)
Lord Howe Island Aero 22.0 -0.1 28.8 21 Feb 17.2 +0.1 6.6 5 Aug 1886.2 1501.8 high 126%
Norfolk Island Aero 21.9 +0.4 28.4 4 Mar 17.0 +0.7 9.4 18 Aug 1764.0 1301.0 high 136%

Notes

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 12 pm on Tuesday 3 January 2012. 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.

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