New South Wales in summer 2009-10: Ex-tropical cyclones bring rain to NSW

  • 15th wettest summer on record for NSW.
  • 13th wettest summer on record for Murray Darling Basin.
  • 11th warmest summer on record.
  • 9th warmest for average minimum temperatures.
  • Three significant rainfall events throughout summer.

Rainfall

The statewide average rainfall for summer was 231.1 mm which is above the historical average1 of 170.4 mm and is the highest rainfall since the summer of 2007/08 when 254.2 mm were recorded statewide. The above average rainfall was due to three major rainfall events throughout summer. Widespread rain fell across NSW on Christmas Day and continued into the new year. This was due to an inland low pressure system associated with the ex-tropical cyclone Laurence. This resulted in major flooding of several northern inland rivers. The second major rainfall event was associated with another ex-tropical cyclone Olga, which produced falls across the north western parts of New South Wales in early February. Following this, on the 13th - 14th of February an upper level low and a surface low pressure trough extending from northwest to southeast NSW interacted with the high humidity present across the state and produced major falls. This rainfall event combined with rainfall earlier falls resulted in many locations under the trough line recording four times their February rainfall. The resulting rainfall deciles map shows extensive areas with above average falls, particularly in the northwest, central and southeast of the state. Recent rainfall over Australia appears fairly typical of past El Niño breakdowns. January 2007 (mainly SA/western Vic), February 2003, April 1998, January 1995, March 1983 and February 1973 all produced good rainfalls on the back of an El Niño event.

The Murray Darling Basin recorded a basin wide average of 208.7 mm which is above the historical average1 of 144.3 mm and is the 13th wettest summer on record.


See a map of total rainfall.
See a map of rainfall deciles.

Temperature

The statewide average mean temperature for NSW was 25.2°C which is 1°C above the historical average1 of 24.2°C. The above average temperatures are a result of warm northerly air flow over the state particularly in January, and higher humidity which prevents overnight cooling. This resulted in both above average maximum and minimum temperatures and ranks as the 11th warmest summer for average mean temperatures. An El Niño event matured and began to decay throughout summer and these events are usually (but not always) associated with above average temperatures in eastern Australia. Warm temperatures experienced during summer as well as winter and spring 2009 are likely due to the influence of El Niño combined with the background, long-term warming that has been observed across Australia since the start of the century.

Maximum temperature

Statewide average maximum temperature for summer is 32.1°C, which is 0.9°C above the historical average1 of 31.2°C. Coastal and southern NSW were up to 2°C above average with the remainder of the state being within a degree of the average. Parts of the northwest were up to 1°C below average and this is partly due to the rainfall and overcast conditions over the area associated with ex-tropical cyclone Olga and the active low pressure trough in the middle of February which produced substantial falls over that area.

Some sites had their highest summer mean daily maximum temperature on record.
See a map of mean maximum temperatures.
See a map of maximum temperature anomalies.

Minimum temperature

The average minimum temperature for the state was 18.3°C, which is 1.2°C above the historical average1 of 17.1°C. All of the state recorded above average minimum temperatures with most of coastal, inland and southern NSW recording up to 2°C above the historical average1. An area northwest of ACT was up to 3°C above average.

Some sites had their lowest summer temperature on record.
Some sites had their warmest summer night (highest daily minimum temperature) on record.
Some sites had their highest summer mean daily minimum temperature on record.
See a map of mean minimum temperatures.
See a map of minimum temperature anomalies.

Other phenomena

Widespread rainfall across NSW which began late on Christmas Day and continued through till early January resulted in flooding in northern inland areas such as Coonamble, Dubbo, Gilgandra and the Macquarie region amongst others.

Heavy rainfall that fell during early to mid February caused major flooding in the southeast and far west NSW. Emergency services minister, Steve Whan announced a natural disaster declaration for the Bega and Eurobodalla local government areas in the state's southeast as well as for the Central Darling and Cobar Shire's in the state's far west.

A strong upper level low produced snowfalls down to 900m above sea level on the 18th of January affecting parts of the Southern Tablelands districts namely Thredbo and Cooma.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in summer 2009-10
Hottest day 45.1 °C at Pooncarie Mail Agency on 10 Jan 2010
Warmest days on average 35.1 °C at Mungindi Post Office
Coolest days on average 16.4 °C at Thredbo AWS
Coldest day 4.7 °C at Thredbo AWS on 18 Jan 2010
Coldest night -4.1 °C at Charlotte Pass (Kosciusko Chalet) on 2 Dec 2009
Coolest nights on average 6.7 °C at Charlotte Pass (Kosciusko Chalet)
Warmest nights on average 22.2 °C at Tibooburra Post Office
Warmest night 31.6 °C at Fowlers Gap AWS on 12 Jan 2010
Wettest overall 1173.4 mm at Yarras (Mount Seaview)
Wettest day 222.0 mm at Boat Harbour (Rous River) on 7 Feb 2010
Highest wind gust 113 km/h at Wilcannia Aerodrome AWS on 17 Dec 2009


Record highest summer mean daily maximum temperature
Mean daily maximum
temperature
for summer 2009-10 (°C)
Previous highest
for summer
Years of
record
Average for
summer
Lord Howe Island Aero 26.7 26.2 in 1997 21 24.9



Record highest summer daily minimum temperature
Highest daily minimum
temperature
in summer 2009-10 (°C)
Previous highest
for summer
Years of
record
Average for
summer
Sydney Airport AMO 25.8 on 23 Jan 2010 25.7 on 15 Jan 1978 71 18.4
Yass (Linton Hostel) 26.0 on 23 Jan 2010 = 26.0 on 27 Jan 1981 45 13.2
Griffith Airport AWS 30.0 on 24 Dec 2009 = 30.0 on 30 Jan 2006 37 16.4
Goulburn TAFE 25.3 on 23 Jan 2010 25.0 on 10 Jan 1979 34 12.9
Tidbinbilla Nature Reserve 24.5 on 23 Jan 2010 22.5 on 27 Feb 1998 26 11.8



Record lowest summer temperature
Lowest temperature
in summer 2009-10 (°C)
Previous lowest
for summer
Years of
record
Average for
summer
South West Rocks (Smoky Cape Lighthouse) 8.0 on 2 Dec 2009 9.4 on 30 Dec 1962 54 19.2



Record highest summer mean daily minimum temperature
Mean daily minimum
temperature
for summer 2009-10 (°C)
Previous highest
for summer
Years of
record
Average for
summer
Newcastle Nobbys Signal Station AWS 20.6 = 20.6 in 2005 143 18.8
Parramatta North (Masons Drive) 18.4 18.2 in 1980 42 17.1
Yarras (Mount Seaview) 18.5 18.4 in 2005 40 16.9
Oberon (Springbank) 12.4 = 12.4 in 1972 34 10.2
Peats Ridge (Waratah Road) 17.6 17.2 in 1990 28 15.7
Gosford (Narara Research Station) AWS 17.9 17.4 in 2000 27 16.4
Nelson Bay (Nelson Head) 20.8 20.7 in 2005 23 18.0



Summary statistics for summer 2009-10
Maximum temperatures
for summer
(°C)
Minimum temperatures
for summer
(°C)
Rainfall
for summer
(millimetres)
Mean for
summer
2009-10
Diff
from
average
Highest for
summer
2009-10
Mean for
summer
2009-10
Diff
from
average
Lowest for
summer
2009-10
Total for
summer
2009-10
Average
for
summer
Rank of
summer
2009-10
Fraction of
summer
average
Western (Far Northwest) (district 46)
Fowlers Gap AWS 34.1   42.5 22 Jan 2010 20.7   13.9 12 Dec 2009 136.2
Tibooburra Airport 34.3   43.3 26 Jan 2010 22.1   14.7 19 Jan 2010 191.0
Tibooburra Post Office 34.4 -1.1 43.7 24 Dec 2009 22.2 +0.9 14.8 19 Jan 2010 207.8 79.3 v high 262%
White Cliffs AWS 34.7   43.4 22 Jan 2010 21.8   14.8 18 Jan 2010 152.4
White Cliffs Post Office 34.6 -0.5 42.8 12 Jan 2010     15.5 1 Dec 2009 160.4 79.0 v high 203%
Wilcannia (Reid St) 34.4 -0.3 43.2 22 Jan 2010 19.9 +0.8 12.2 12 Dec 2009 119.8 76.7 high 156%
Wilcannia Aerodrome AWS 34.7   44.0 12 Jan 2010 19.9   12.2 12 Dec 2009 150.6
Western (Lower Darling) (district 47)
Broken Hill (Patton Street) 32.7 +0.6 42.3 22 Jan 2010 19.3 +1.4 10.9 11 Dec 2009 130.8 69.5 high 188%
Broken Hill Airport AWS 32.5 +0.4 41.6 22 Jan 2010 19.2 +1.1 11.5 11 Dec 2009 137.6 66.2 v high 208%
Lake Victoria Storage     43.5 10 Jan 2010 17.0 +0.9 9.6 9 Dec 2009 57.2 56.2 average 102%
Menindee Post Office 34.8 +1.2 44.2 12 Jan 2010 19.6 +1.8 12.2 9 Dec 2009 88.4 66.0 high 134%
Pooncarie Mail Agency 34.5   45.1 10 Jan 2010 18.2   10.6 9 Dec 2009 89.1 64.5 high 138%
Western (Upper Darling) (district 48)
Bourke Airport AWS 34.8   43.2 25 Jan 2010 20.9   11.7 19 Jan 2010 133.8
Brewarrina Hospital 34.0 -1.5 42.8 8 Dec 2009 20.6 +0.6 10.4 19 Jan 2010 258.8 137.8 v high 188%
Cobar Airport AWS 33.4   41.7 27 Jan 2010 19.6   9.3 19 Dec 2009 168.0
Cobar MO 33.6 +0.3 42.4 12 Jan 2010 20.4 +0.6 11.3 19 Jan 2010 173.0 127.5 high 136%
Collarenebri (Albert St) 34.9 0.0 43.7 8 Dec 2009     10.2 19 Jan 2010 239.6 178.6 high 134%
Lightning Ridge Visitors Information Cen 34.3   43.5 8 Dec 2009 21.1   11.5 20 Jan 2010 261.9
Wanaaring Post Office 34.9   42.9 24 Dec 2009 21.6   13.2 19 Jan 2010 174.8 98.8 high 177%
Western (Southwest Plains) (district 49)
Balranald (RSL) 33.4 +1.2 44.5 11 Jan 2010 17.2 +1.4 9.6 18 Dec 2009 153.0 71.3 v high 215%
Ivanhoe Aerodrome AWS 33.8   43.9 12 Jan 2010 20.1   12.6 11 Dec 2009 154.6
Ivanhoe Post Office 34.9 +0.8 44.7 12 Jan 2010 19.4 +2.0 10.6 2 Dec 2009 175.5 81.8 v high 215%
Central Western Plains (South) (district 50)
Condobolin Ag Research Stn 33.3 +0.5 42.5 17 Dec 2009 19.2 +1.8 10.9 19 Dec 2009 265.8 132.4 v high 201%
Condobolin Airport AWS 32.8   43.0 17 Dec 2009 19.1   11.2 12 Dec 2009 287.6
Peak Hill Post Office 32.7 +0.4 40.9 17 Dec 2009 20.3 +1.8 10.9 19 Jan 2010 299.4 160.0 high 187%
West Wyalong Airport AWS 32.3   42.2 17 Dec 2009 18.1   10.1 9 Dec 2009 201.2
Central Western Plains (North) (district 51)
Coonamble Airport AWS 32.9   42.1 8 Dec 2009 19.4   9.5 19 Jan 2010 362.0
Coonamble Comparison 33.3 -0.9 41.8 8 Dec 2009 19.8 +1.1 9.2 20 Jan 2010 380.4 163.6 v high 233%
Nyngan Airport 33.3 -0.2 41.6 23 Jan 2010 20.2 +1.4 12.6 20 Jan 2010 241.2 141.6 high 170%
Trangie Research Station AWS 32.6 +0.2 41.7 17 Dec 2009 19.2 +1.4 9.6 19 Jan 2010 310.2 146.2 v high 212%
Northwest Plains (West) (district 52)
Mungindi Post Office 35.1 +0.5 43.2 8 Dec 2009 21.0 +1.1 11.0 19 Jan 2010 269.2 187.1 high 144%
Walgett Airport AWS 34.3   43.0 8 Dec 2009 19.4   8.1 20 Jan 2010 269.8
Northwest Plains (East) (district 53)
Moree Aero 33.6   42.3 8 Dec 2009 20.3   10.8 19 Jan 2010 245.2
Northwest Slopes (North) (district 54)
Barraba Post Office 32.5 +1.4 39.1 24 Jan 2010 16.7 +1.0 5.8 19 Jan 2010 208.6 242.0 average 86%
Narrabri Airport AWS 33.2   43.1 8 Dec 2009 20.0   8.4 19 Jan 2010 341.6
Northwest Slopes (South) (district 55)
Gunnedah Airport AWS 32.8   42.8 8 Dec 2009 17.9   7.1 19 Jan 2010 313.6
Gunnedah Pool 32.6 -0.7 41.2 8 Dec 2009 19.1 +1.4 9.5 19 Jan 2010 331.8 207.8 v high 160%
Gunnedah Resource Centre 32.1 +0.8 41.7 8 Dec 2009 19.5 +1.2 10.7 20 Jan 2010 297.2 228.3 high 130%
Quirindi Post Office 32.7 +1.1 40.4 8 Dec 2009 17.6 +1.9 7.4 19 Jan 2010 243.2 227.5 average 107%
Tamworth Airport AWS 32.2   41.4 8 Dec 2009 17.3   7.1 19 Jan 2010 354.4
Woolbrook (Danglemah Road) 28.0 +1.1 35.5 9 Dec 2009 13.6 +1.8 2.0 19 Jan 2010 308.6 273.4 high 113%
Northern Tablelands (West) (district 56)
Armidale (Tree Group Nursery) 26.7   33.9 8 Dec 2009 13.1   2.6 19 Jan 2010 323.6
Armidale Airport AWS 26.1   33.5 8 Dec 2009 13.9   5.0 19 Jan 2010 295.0
Glen Innes Ag Research Stn 26.2 +1.4 32.2 10 Dec 2009 13.8 +0.8 5.5 19 Jan 2010 313.0 309.9 average 101%
Glen Innes Airport AWS 26.3   33.2 10 Dec 2009 13.0   2.3 20 Jan 2010 320.8
Glen Innes Post Office 27.0 +1.1 33.5 9 Dec 2009 14.9 +2.0 5.9 20 Jan 2010 350.6 312.7 high 112%
Guyra Hospital 24.6 +1.4 31.4 10 Dec 2009 12.5 +1.0 3.7 19 Jan 2010 310.2 341.7 average 91%
Inverell (Raglan St) 30.9   37.4 9 Dec 2009 15.7   4.9 19 Jan 2010 256.8
Tenterfield (Federation Park) 26.7 +0.1 35.2 10 Dec 2009 14.7 +0.8 5.5 19 Jan 2010 313.5 312.8 average 100%
Northern Tablelands (East) (district 57)
Tabulam (Muirne) 27.6 +1.0 37.2 10 Dec 2009 17.4 +0.7 11.4 2 Dec 2009 575.4 502.9 average 114%
Upper North Coast (district 58)
Alstonville Tropical Fruit Research Stat 28.1 +1.2 34.6 26 Jan 2010 19.8 +0.7 15.0 2 Dec 2009 427.4 551.1 average 78%
Ballina Airport AWS 29.4   36.8 18 Jan 2010 20.0   12.9 4 Dec 2009 383.6
Byron Bay (Cape Byron AWS) 28.0   32.2 18 Jan 2010 21.0   15.8 3 Dec 2009 561.6
Casino Airport 31.5 +0.5 41.6 9 Dec 2009 20.2 +1.7 14.6 4 Dec 2009 512.4 409.9 high 125%
Casino Airport AWS 30.8   41.4 9 Dec 2009 19.7   13.7 4 Dec 2009 503.8
Evans Head RAAF Bombing Range AWS 29.0   37.8 15 Feb 2010 20.0   14.2 20 Jan 2010 329.0
Grafton Airport AWS 30.6   40.3 8 Dec 2009 19.1   10.8 20 Jan 2010 376.6
Grafton Olympic Pool 31.3 +1.6 42.5 8 Dec 2009 20.1 +0.8 13.8 20 Jan 2010 381.4 404.2 average 94%
Grafton Research Stn 30.6   40.9 8 Dec 2009 19.6   13.4 20 Jan 2010 380.8 355.8 average 107%
Lismore (Richmond Hill) 30.2   40.0 9 Dec 2009 19.3   13.5 4 Dec 2009 364.3
Lismore Airport AWS 30.9   40.9 9 Dec 2009 18.9   13.4 4 Dec 2009 289.6
Murwillumbah (Bray Park) 30.0 +0.8 37.2 18 Jan 2010 20.4 +1.2 16.0 4 Dec 2009 631.0 593.4 average 106%
Yamba Pilot Station 27.2 +0.8 30.4 12 Feb 2010 20.8 +0.9 15.8 2 Dec 2009 286.4 412.8 low 69%
Lower North Coast (district 59)
Coffs Harbour MO 27.8 +1.1 31.8 12 Feb 2010 19.9 +0.9 14.0 2 Dec 2009 409.4 544.3 low 75%
Dorrigo (Old Coramba Rd) 25.2   33.8 8 Dec 2009 15.5   7.5 20 Jan 2010 638.4
Kempsey (Wide Street) 29.9 +1.0 36.1 23 Feb 2010 19.0 +1.6 11.5 20 Jan 2010 368.3 399.3 average 92%
Kempsey Airport AWS 29.3   36.1 26 Jan 2010 18.2   10.2 20 Jan 2010 350.4
South West Rocks (Smoky Cape Lighthouse) 28.2 +1.7 33.0 23 Feb 2010 19.8 +0.6 8.0 2 Dec 2009 366.0 439.5 average 83%
Manning (district 60)
Forster - Tuncurry R.V.C.P. 26.7   34.0 23 Feb 2010 20.1   14.0 2 Dec 2009 247.9 318.8 low 78%
Port Macquarie Airport AWS 28.2   35.1 23 Feb 2010 18.8   11.2 20 Jan 2010 410.2
Taree Airport AWS 29.0   38.0 23 Jan 2010 18.8   12.0 4 Dec 2009 257.8
Yarras (Mount Seaview) 29.4 +0.9 39.4 23 Jan 2010 18.5 +1.6 11.0 19 Jan 2010 1173.4 645.9 v high 182%
Hunter (district 61)
Cessnock (Nulkaba) 30.9 +1.1 43.2 23 Jan 2010 18.5 +1.4 8.6 3 Dec 2009 291.3 266.0 average 110%
Cessnock Airport AWS 30.0   41.4 23 Jan 2010 17.6   7.1 3 Dec 2009 303.6 254.0 high 120%
Cooranbong (Lake Macquarie AWS) 28.7   41.8 23 Jan 2010 18.1   8.2 3 Dec 2009 208.8
Gosford (Narara Research Station) AWS 27.9 +0.7 40.9 23 Jan 2010 17.9 +1.5 9.2 3 Dec 2009 412.8 389.7 average 106%
Jerrys Plains Post Office 31.8 +0.5 43.2 8 Dec 2009 18.2 +1.6 8.9 3 Dec 2009 259.4 219.1 average 118%
Maitland Visitors Centre 30.0   42.0 23 Jan 2010 18.3   8.0 3 Dec 2009 172.4
Mangrove Mountain AWS 27.6   39.5 17 Dec 2009 17.4   9.0 3 Dec 2009 347.0
Merriwa (Roscommon) 30.4   41.2 8 Dec 2009 16.4   7.5 2 Dec 2009 283.2 206.7 high 137%
Murrurundi Gap AWS 27.6   36.9 8 Dec 2009 16.4   8.2 2 Dec 2009 267.2
Murrurundi Post Office 30.1 0.0 39.1 8 Dec 2009 15.7 +1.1 5.5 3 Dec 2009 309.8 258.2 average 120%
Nelson Bay (Nelson Head) 27.3 +0.5 34.9 12 Feb 2010 20.8 +2.8 14.1 2 Dec 2009 217.0 307.3 average 71%
Newcastle Nobbys Signal Station AWS 25.9 +0.6 39.6 23 Jan 2010 20.6 +1.8 14.0 3 Dec 2009 118.8 276.8 low 43%
Newcastle University 29.2   42.0 23 Jan 2010 19.6   10.2 3 Dec 2009 189.2
Norah Head AWS 26.4   40.2 23 Jan 2010 20.4   13.4 2 Dec 2009 198.4
Peats Ridge (Waratah Road) 27.7 +1.3 40.0 17 Dec 2009 17.6 +1.9 9.8 3 Dec 2009 329.2 373.4 average 88%
Scone Airport AWS 31.0   42.6 8 Dec 2009 16.9   6.6 3 Dec 2009 285.6
Singleton STP 30.9   41.8 23 Jan 2010 17.6   6.5 3 Dec 2009 233.6
Williamtown RAAF 29.0 +1.4 42.2 23 Jan 2010 18.4 +0.9 10.2 3 Dec 2009 150.2 300.2 low 50%
Central Tablelands (North) (district 62)
Gulgong Post Office 30.5 +0.4 39.1 8 Dec 2009 17.3 +1.4 9.2 2 Dec 2009 332.4 198.2 v high 168%
Mudgee Airport AWS 29.5   38.7 8 Dec 2009 16.1   5.7 12 Dec 2009 322.4
Nullo Mountain AWS 23.1   31.9 8 Dec 2009 13.7   5.8 2 Dec 2009 457.4
Central Tablelands (South) (district 63)
Bathurst Agricultural Station 28.7 +1.5 36.5 17 Dec 2009 13.8 +1.0 3.5 12 Dec 2009 285.0 191.3 high 149%
Bathurst Airport AWS 28.3   36.5 17 Dec 2009 14.2   4.9 12 Dec 2009 255.4
Cowra Research Centre (Evans St) 31.9 +1.5 40.5 17 Dec 2009 17.6 +1.6 8.5 12 Dec 2009 236.0 173.5 high 136%
Katoomba (Murri St) 24.0 +1.3 34.3 12 Jan 2010 14.0 +1.6 5.2 1 Dec 2009 678.2 455.9 high 149%
Lithgow (Cooerwull) 25.7   34.2 12 Jan 2010 13.2   2.2 12 Dec 2009 277.4 237.3 average 117%
Mount Boyce AWS 23.8   33.9 12 Jan 2010 13.6   4.7 1 Dec 2009 498.2
Oberon (Springbank) 24.6 +0.7 33.0 13 Jan 2010 12.4 +2.2 3.1 3 Dec 2009 292.3 215.1 high 136%
Orange Agricultural Institute 26.3 +0.7 34.0 17 Dec 2009 13.8 +1.3 4.5 2 Dec 2009 351.8 246.7 high 143%
Orange Airport AWS 26.4   34.7 17 Dec 2009 12.9   1.6 12 Dec 2009 266.0
Orange Airport Comparison 26.3 +1.3 34.0 22 Jan 2010 13.3 +1.8 3.0 12 Dec 2009 271.8 241.6 high 113%
Springwood Bowling Club 28.2   40.3 23 Jan 2010 17.3   10.1 19 Jan 2010 572.2 367.1 high 156%
Central Western Slopes (North) (district 64)
Coonabarabran (Namoi Street) 30.4 -0.6 38.5 8 Dec 2009 15.5 +1.2 5.7 3 Dec 2009 573.0 242.9 v high 236%
Coonabarabran Airport AWS 29.4   38.6 8 Dec 2009 17.6   8.4 2 Dec 2009 432.8
Dunedoo Post Office 31.9 +0.8 40.6 8 Dec 2009 17.9 +1.6 7.9 19 Jan 2010 340.2 196.0 v high 174%
Central Western Slopes (South) (district 65)
Cowra Airport Comparison 32.5 +1.3 41.2 22 Jan 2010 17.3 +2.6 8.4 12 Dec 2009 203.2 161.9 average 126%
Dubbo Airport AWS 31.7   40.4 17 Dec 2009 18.0   9.0 19 Jan 2010
Forbes Airport AWS 32.8   42.7 17 Dec 2009 17.9   8.6 12 Dec 2009 268.2
Parkes (Macarthur Street) 33.0 +1.5 42.0 23 Jan 2010 19.0 +1.7 10.4 12 Dec 2009 199.0 157.3 high 127%
Parkes Airport AWS 32.4   41.0 23 Jan 2010 17.7   8.0 12 Dec 2009 272.2 179.6 high 152%
Wellington (Agrowplow) 32.0 -0.2 39.3 17 Dec 2009 17.9 +1.7 8.2 20 Jan 2010 316.4 166.6 v high 190%
Metropolitan (East) (district 66)
Bankstown Airport AWS 28.8 +1.1 42.8 23 Jan 2010 18.7 +1.1 12.2 20 Jan 2010 169.2 267.5 low 63%
Canterbury Racecourse AWS 27.8   42.3 23 Jan 2010 18.8   11.8 20 Jan 2010 212.8
Holsworthy Control Range 29.2   42.7 23 Jan 2010 17.8   10.3 20 Jan 2010 210.8
Parramatta North (Masons Drive) 29.1 +1.2 42.3 23 Jan 2010 18.4 +1.3 12.5 20 Jan 2010 339.0 303.9 average 112%
Sydney (Observatory Hill) 26.8 +1.2 41.3 23 Jan 2010 20.3 +2.0 13.5 2 Dec 2009 342.2 298.1 average 115%
Sydney Airport AMO 27.5 +1.3 42.5 23 Jan 2010 20.3 +1.9 13.2 2 Dec 2009 238.8 281.7 average 85%
Sydney Olympic Park (Sydney Olympic Pk A 28.5   42.9 23 Jan 2010 19.8   13.2 2 Dec 2009 274.0
Terrey Hills AWS 26.4   40.3 23 Jan 2010 18.5   11.8 1 Dec 2009 326.0
Metropolitan (West) (district 67)
Badgerys Creek AWS 29.9   43.0 23 Jan 2010 17.5   10.0 19 Jan 2010 208.4
Horsley Park Equestrian Centre AWS 29.5   42.5 23 Jan 2010 18.0   10.9 3 Dec 2009 224.2
Liverpool (Michael Wenden Centre) 29.6   42.6 23 Jan 2010 18.0   10.5 20 Jan 2010 293.0
Penrith Lakes AWS 30.7   42.9 23 Jan 2010 18.7   12.2 19 Jan 2010 349.8
Prospect Reservoir 29.7 +1.8 42.5 23 Jan 2010 18.4 +1.2 11.1 3 Dec 2009 297.0 264.2 average 112%
Richmond RAAF 30.3   43.3 23 Jan 2010 18.0   9.7 19 Jan 2010 290.6
Illawarra (district 68)
Albion Park (Wollongong Airport) 26.5   41.0 23 Jan 2010 17.4   9.0 20 Jan 2010 288.2
Bellambi AWS 25.0   35.9 23 Jan 2010 19.2   12.7 2 Dec 2009 255.0
Bowral (Parry Drive) 25.1 +0.4 37.0 17 Dec 2009 14.3 +1.5 6.5 1 Dec 2009 385.2 255.9 high 151%
Camden Airport AWS 30.1 +1.3 43.1 17 Dec 2009 17.4 +1.2 10.1 3 Dec 2009 249.0 239.2 average 104%
Campbelltown (Mount Annan) 29.9   42.8 23 Jan 2010 17.1   9.7 3 Dec 2009 179.8
Jervis Bay (Point Perpendicular AWS) 24.4   35.5 23 Jan 2010     12.9 1 Dec 2009 388.0
Kiama (Bombo Headland) 24.7   35.2 23 Jan 2010 18.8   13.1 19 Jan 2010 376.2
Moss Vale AWS 25.0   37.9 17 Dec 2009 14.0   5.4 19 Jan 2010 272.4
Nowra RAN Air Station AWS 27.3   43.0 17 Dec 2009 16.5   8.5 12 Dec 2009 341.0
South Coast (district 69)
Batemans Bay (Catalina Country Club) 26.1   42.1 17 Dec 2009 16.2   6.7 19 Jan 2010 404.7
Bega AWS 27.3   44.4 12 Jan 2010 15.7   8.7 20 Jan 2010 432.0
Braidwood Racecourse AWS 26.7   38.2 12 Jan 2010 12.5   2.5 12 Dec 2009 296.6
Green Cape AWS 23.9   30.1 9 Jan 2010 17.6   12.4 1 Dec 2009 28.8
Merimbula Airport AWS 25.0   42.0 17 Dec 2009 15.7   9.0 12 Dec 2009 396.2
Montague Island Lighthouse 22.9 +0.2 29.9 22 Jan 2010 17.8 +0.8 11.6 18 Jan 2010 352.8 221.4 high 159%
Moruya Airport AWS 25.4   43.0 17 Dec 2009 16.2   8.0 20 Jan 2010 465.6
Moruya Heads Pilot Station 24.6 +1.1 41.3 17 Dec 2009 17.3 +1.6 10.5 19 Jan 2010 501.6 264.3 v high 190%
Narooma RVCP 24.0 +1.0 31.6 22 Jan 2010 17.4   11.2 19 Jan 2010 644.1 255.4 v high 252%
Nerriga Composite 26.4 +1.1 38.0 17 Dec 2009 13.0 +1.0 3.0 2 Dec 2009 292.4 200.6 high 146%
Ulladulla AWS 24.3   36.9 23 Jan 2010 17.7   10.6 19 Jan 2010
Southern Tablelands (Goulburn-Monaro) (district 70)
Bombala (Therry Street) 26.3 +1.5 37.7 12 Jan 2010 11.7 +1.8 4.0 12 Dec 2009 285.8 186.5 high 153%
Bombala AWS 24.8   37.3 12 Jan 2010 11.5   3.5 18 Jan 2010 226.4
Canberra Airport 29.2 +2.1 39.1 12 Jan 2010 14.7 +2.2 4.2 19 Jan 2010 209.2 168.7 high 124%
Canberra Airport Comparison 29.5   39.8 12 Jan 2010 14.2   3.5 19 Jan 2010 215.6
Cooma Airport AWS 26.2   37.3 11 Jan 2010 11.0   -2.6 2 Dec 2009 230.6 138.4 v high 167%
Cooma Visitors Centre 27.1 +0.9 38.9 10 Jan 2010 11.2 +1.2 1.0 2 Dec 2009 239.8 162.2 high 148%
Goulburn Airport AWS 27.4   37.9 17 Dec 2009 13.1   1.3 1 Dec 2009 273.4
Goulburn TAFE 27.7 +1.1 37.5 17 Dec 2009 14.0 +1.1 4.6 2 Dec 2009 307.2 180.5 v high 170%
Mount Ginini AWS 19.8   27.9 12 Jan 2010 9.1   -1.7 1 Dec 2009 260.4
Taralga Post Office 26.9 +1.8 37.0 12 Jan 2010 12.5 +1.3 0.9 2 Dec 2009 273.9 205.5 high 133%
Tuggeranong (Isabella Plains) AWS     38.6 12 Jan 2010 14.8   4.3 19 Jan 2010 231.2
Yass (Linton Hostel) 29.9 +1.2 39.0 12 Jan 2010 15.1 +1.9 6.2 19 Jan 2010 278.6 149.6 v high 186%
Southern Tablelands (Snowy Mountains) (district 71)
Charlotte Pass (Kosciusko Chalet) 18.2 +1.5 26.0 11 Jan 2010 6.7 +2.2 -4.1 2 Dec 2009 473.2 418.0 average 113%
Thredbo AWS 16.4 +1.0 24.7 12 Jan 2010 6.9 +0.8 -3.2 2 Dec 2009 353.4 287.6 high 123%
Thredbo Village 21.9 +1.5 29.7 12 Jan 2010 7.7 +1.3 -0.5 2 Dec 2009 412.9 311.8 high 132%
Southwest Slopes (South) (district 72)
Albury Airport AWS 32.1   42.4 12 Jan 2010 16.8   8.7 19 Jan 2010 108.2
Cabramurra SMHEA AWS 20.9   29.1 22 Jan 2010 11.1   -0.5 18 Jan 2010 126.6
Hume Reservoir 32.0 +2.1 41.9 12 Jan 2010 17.7 +1.9 8.2 12 Dec 2009 136.8 135.4 average 101%
Khancoban AWS 30.8   41.1 12 Jan 2010 13.3   4.0 19 Jan 2010 222.2
Tumbarumba Post Office 29.2 +1.5 37.5 22 Jan 2010 12.8 +1.7 3.4 2 Dec 2009 218.6 185.5 average 118%
Wagga Wagga AMO 32.5 +1.9 42.9 10 Jan 2010 17.2 +1.8 8.0 12 Dec 2009 156.0 124.8 high 125%
Southwest Slopes (North) (district 73)
Burrinjuck Dam 31.2 +2.6 40.6 17 Dec 2009 16.7 +1.8 7.7 1 Dec 2009 339.6 176.7 v high 192%
Cootamundra Airport 31.1   41.0 17 Dec 2009 15.8   6.0 12 Dec 2009 256.0
Grenfell (Quondong Rd) 31.0 +0.1 40.1 17 Dec 2009 17.6 +1.9 9.6 19 Jan 2010 324.1 154.1 v high 210%
Gundagai (William St) 32.0   42.1 12 Jan 2010 16.7   7.2 1 Dec 2009 182.2
Quandialla Post Office 33.1 +1.0 42.2 17 Dec 2009 18.1 +1.6 8.5 12 Dec 2009 244.2 135.6 high 180%
Temora Airport 32.4   42.6 11 Jan 2010 17.0   7.0 12 Dec 2009 158.6
Wyalong Post Office 32.8 +1.1 42.2 17 Dec 2009 19.0 +2.2 11.0 9 Dec 2009 223.8 124.5 v high 180%
Young Airport 30.9   40.9 17 Dec 2009 14.8   3.7 12 Dec 2009 250.0
Riverina (East) (district 74)
Corowa Airport 32.3 +1.2 43.0 12 Jan 2010 16.3 +1.3 7.6 9 Dec 2009 140.0 112.0 high 125%
Deniliquin Airport AWS 32.7   44.6 11 Jan 2010 16.6   7.9 11 Dec 2009 92.0
Narrandera Airport 33.2   43.6 11 Jan 2010 17.6   9.4 12 Dec 2009 114.0 104.9 average 109%
Narrandera Golf Club 32.7 +1.1 43.0 11 Jan 2010 17.6 +1.1 9.0 12 Dec 2009 100.6 109.2 average 92%
Tocumwal Airport 32.2 +1.3 43.8 11 Jan 2010 16.4 +1.1 8.6 9 Dec 2009 121.5 93.5 high 130%
Yanco Agricultural Institute 33.1   43.4 11 Jan 2010 18.7   10.4 9 Dec 2009 94.4
Riverina (West) (district 75)
Griffith Airport AWS 33.2 +1.3 43.3 11 Jan 2010 18.4 +2.0 10.5 9 Dec 2009 128.0 86.5 high 148%
Hay (Miller Street) 33.2 +1.0 44.2 10 Jan 2010 17.9 +1.9 9.6 19 Jan 2010 153.0 81.9 v high 187%
Hay Airport AWS 33.5   44.8 11 Jan 2010 17.8   9.8 9 Dec 2009 157.0
Hillston Airport 33.5 +0.9 43.0 10 Jan 2010 18.5 +0.8 10.2 9 Dec 2009 185.4 87.2 v high 213%
Lake Cargelligo Airport     43.5 17 Dec 2009 19.1 +1.3 11.6 9 Dec 2009 182.8 111.4 high 164%

Notes

A Seasonal 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 2 pm on Monday 1 March 2010. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

A note about deciles: Deciles are used to give an element (in this case rainfall or temperature) a ranking. Deciles are calculated by arranging the totals in ascending order (from lowest to highest) then splitting them into 10 equal groups (thus the groups are called deciles). The first group would be in decile range one, the second group in decile range two, etc up to the highest annual totals (highest 10 per cent) being in decile range 10.

1Averages: Averages are based on the period 1961 to 1990 which is a convention of the World Meteorological Organisation

Normals are long-term averages 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 for temperature and less than 30 years of record for rainfall, as they cannot then be calculated reliably.

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