New South Wales in winter 2020: a season of two halves

Winter 2020 in New South Wales had two contrasting halves. A warm and dry start made way to a succession of cold fronts bringing cool conditions and heavy rain to much of the state. Overall, it was the wettest winter, with the coolest days, since 2016.

Dry, then wet

  • Winter 2020 started with below average rain in June, the fourth such June in a row.
  • From mid-July a series of complex low pressure systems brought heavy rain, flooding and high seas along the coast.
  • During 13–14 July a low pressure system created a powerful sea swell, with wave heights of 5 to 6 m leading to significant coastal erosion, most notably at Wamberal.
  • Three low pressure systems each brought over 100 mm of rain to the South Coast region from mid-July to early August.
  • The highest rainfall totals over the South Coast occurred during 8–10 August, with up to 370 mm at some sites over the three days and flooding of the Moruya and Shoalhaven rivers.
  • Some sites had their highest winter daily rainfall on record.
  • Several sites had their highest total winter rainfall on record, exceeding winter 2016, or their highest total winter rainfall since 1998.
  • Overall, New South Wales winter rainfall was around 5% above the historical average, the wettest since 2016.
  • New South Wales has already received more rainfall in January to August 2020 than it did in either 2018 or 2019 as a whole, with statewide year-to-date rainfall currently 14% above average.

Warm, then cool, days

  • Mean daytime temperatures were above average across the state in June and July, although cooler than in recent winters.
  • A succession of cold fronts during August meant that daytime temperatures were the coolest for August since 2010, and two sites had their coldest winter day on record.
  • For the state as a whole, winter mean daytime temperatures were 0.58 °C above average, the coolest since 2016.
  • Clear skies and drier conditions resulted in below average mean minimum temperatures in the south-west of the state.
  • In contrast, cloudy conditions along the coast meant that mean minimum temperatures were generally above average.
  • Overall, the wet and cloudy conditions meant that mean minimum temperatures were 0.59 °C above average, the warmest since 2016.
  • The year-to-date (January to August 2020) mean temperature for the state is 0.55 °C above the historical average.

Winter snow

  • A series of cold fronts during 13–14 July and 21–23 August brought substantial snow to alpine regions.
  • Snow depths in winter 2020 at the Snowy Hydro Spencers Creek snow course have generally been around 50 to 75% of those reported for the same time in 2019.
  • Snow fell across parts of New South Wales several times during August, including heavier falls across the ACT, New England and towns in the Blue Mountains on the 22nd.

Further information

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Extremes in winter 2020
Hottest day 28.9 °C at Smithville AWS on 30 Aug
Warmest days on average 21.8 °C at Murwillumbah (Bray Park)
Coolest days on average 1.3 °C at Thredbo AWS
Coldest day -5.1 °C at Thredbo AWS on 22 Aug
Coldest night -11.3 °C at Perisher Valley AWS on 25 Aug
Coolest nights on average -3.7 °C at Thredbo AWS
Warmest nights on average 13.1 °C at Byron Bay (Cape Byron AWS)
Warmest night 17.6 °C at Byron Bay (Cape Byron AWS) on 14 Jun
Warmest on average overall 16.3 °C at Byron Bay (Cape Byron AWS)
Coolest on average overall -1.2 °C at Thredbo AWS
Wettest overall 789.6 mm at Wattamolla (Griffiths)
Wettest day 223.6 mm at Sanctuary Point (Salinas Street) on 28 Jul
Strongest wind gust 137 km/h at Thredbo AWS on 27 Aug

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


Record highest winter daily rainfall
New record
(mm)
Old
record
Years of
record
Nelligen (Thule Road) 183.0 on 27 Jul 178.8 on 26 Aug 2015 76
Hay (Bedarbidgal) 43.8 on 9 Aug 39.0 on 10 Jun 1995 34
Swansea (Catherine St) 172.4 on 27 Jul 170.0 on 9 Jun 2007 33
Batemans Bay (Catalina Country Club) 164.0 on 27 Jul 140.0 on 26 Aug 2015 31
Deniliquin Airport AWS 33.2 on 8 Aug 33.0 on 2 Jun 2013 24
Newcastle University 152.2 on 27 Jul 96.0 on 5 Jun 2016 23
Nicholls (Gungahlin Lakes) 68.0 on 9 Aug 58.2 on 6 Jun 2016 23
Sanctuary Point (Salinas Street) 223.6 on 28 Jul 180.0 on 26 Aug 2015 21
Callala Treatment Plant 181.0 on 28 Jul 151.4 on 26 Aug 2015 20
Nowra Boat Shed (Shoalhaven River) 204.0 on 8 Aug 198.0 on 26 Aug 2015 20



Record highest winter total rainfall
New record
(mm)
Old
record
Years of
record
Average for
winter
Nelligen (Thule Road) 587.0 574.7 in 1934 74 229.3
Ulladulla AWS 588.2 579.6 in 2016 27 273.3
Moruya Airport AWS 417.2 380.8 in 2016 21 192.1
Nowra Boat Shed (Shoalhaven River) 640.0 524.0 in 2015 20 229.2
Nowra RAN Air Station AWS 649.2 589.6 in 2016 20 258.8
Sanctuary Point (Salinas Street) 703.4 649.6 in 2016 20 325.5

Highest winter total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
winter
Narooma (Marine Rescue) 449.6 459.0 in 1963* 192.3
Araluen Lower (Araluen Rd) 546.0 811.9 in 1991* 191.8
Brogo (Blanchards Road) 555.8 575.6 in 1991* 207.6
Braidwood (Krawarree) 456.0 683.4 in 1991* 164.8
Bettowynd (Bellaringah) 419.0 574.0 in 1991* 162.0
Captains Flat (Foxlow St) 325.8 394.6 in 1998 173.2
Merimbula Airport AWS 306.0 334.8 in 1998 166.9
Moruya Heads Pilot Station 410.4 474.3 in 1998 198.6
Beaumont (The Cedars) 771.6 778.3 in 1999 344.3
Culburra Treatment Works 631.9 814.4 in 1998* 303.7
Snowball 486.0 517.4 in 1998* 213.9

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported




Record highest winter temperature
New record
(°C)
Old
record
Years of
record
Average for
winter
Narooma (Marine Rescue) 27.5 on 30 Aug = 27.5 on 23 Aug 1995 37 16.7



Record lowest winter daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
winter
Lake Victoria Storage 8.0 on 7 Aug 8.5 on 16 Jul 1989 97 16.1
Broken Hill Airport AWS 6.7 on 7 Aug 6.9 on 6 Jul 1993 32 16.5



Highest winter mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
winter
Port Macquarie Airport AWS 7.9 8.4 in 1999 7.1
Yarras (Mount Seaview) 7.5 =7.5 in 1999 6.2
Coonabarabran (Showgrounds) 1.9 2.8 in 1998* 0.8

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported




Record highest winter mean temperature
New record
(°C)
Old
record
Years of
record
Average for
winter
Bega AWS 10.7 = 10.7 in 2009 28 10.0



Summary statistics for winter 2020
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
winter
2020
Diff
from
average
Highest for
winter
2020
Mean for
winter
2020
Diff
from
average
Lowest for
winter
2020
Total for
winter
2020
Average
for
winter
Rank of
winter
2020
Fraction of
winter
average
Western (Far Northwest) (district 46)
Fowlers Gap AWS 17.9 -0.1 27.9 30 Aug 4.2 -0.9 -1.2 28 Jun 25.4 43.2 average 59%
Smithville AWS 18.9   28.9 30 Aug 5.2   -0.3 30 Jun 36.6
Tibooburra Airport 19.1 -0.1 28.8 30 Aug 7.1 -0.1 1.0 29 Jun 50.6 34.5 high 147%
White Cliffs AWS 18.1 -0.4 28.5 30 Aug 5.9 -0.5 0.6 18 Jul 38.0 46.7 average 81%
Wilcannia Aerodrome AWS 18.0 -0.5 28.3 30 Aug 3.7 -0.9 -3.2 5 Aug 52.8 60.8 average 87%
Western (Lower Darling) (district 47)
Broken Hill Airport AWS 16.4 -0.1 25.7 30 Aug 5.0 -0.3 -1.4 8 Jul 30.0 49.9 low 60%
Lake Victoria Storage 16.6 +0.5 24.5 27 Aug 4.4 -1.3 -3.0 9 Jun 51.5 69.6 average 74%
Menindee Post Office 18.1 +0.2 28.2 30 Aug 4.2 -0.6 -1.0 5 Aug 38.2 57.3 average 67%
Mulurulu AWS 16.9   26.1 30 Aug 3.4   -4.5 5 Aug 53.0
Pooncarie Mail Agency 17.9 0.0 27.5 30 Aug 4.5 -0.5 -1.3 5 Aug 54.1 69.8 average 78%
Western (Upper Darling) (district 48)
Bourke Airport AWS 19.5 -0.1 28.6 30 Aug 4.9 -0.2 -1.0 8 Jul 45.8 56.5 average 81%
Brewarrina Hospital 19.6 +0.4 27.4 31 Aug 5.2 0.0 -0.5 6 Aug 50.0 82.2 average 61%
Cobar Airport AWS 17.2 -0.2 26.8 30 Aug     -3.6 5 Aug 81.0 73.9 average 110%
Cobar MO 17.2 +0.3 26.9 30 Aug 5.6 -0.2 0.6 5 Aug 90.8 82.6 average 110%
Noona AWS 17.4   27.3 30 Aug 5.7   -0.9 8 Jul 65.4
Wanaaring (Delta AWS) 19.0   28.2 30 Aug 3.9   -2.5 17 Jul 57.6
Wanaaring Post Office 19.8 0.0 28.0 30 Aug 4.0 -0.9 -2.2 29 Jun 84.7 52.4 high 162%
Western (Southwest Plains) (district 49)
Balranald (RSL) 16.6 +0.1 26.0 30 Aug 3.8 -0.4 -1.4 9 Jun 73.2 84.9 average 86%
Euabalong (Mount Hope AWS) 16.3   26.0 30 Aug 2.5   -6.0 5 Aug 101.6
Ivanhoe Aerodrome AWS 16.9 -0.6 27.0 30 Aug 5.1 -0.5 -0.9 17 Jul 36.8 61.2 average 60%
Central Western Plains (South) (district 50)
Condobolin Ag Research Stn 15.6 -0.3 22.5 30 Aug 3.3 -0.1 -3.3 6 Aug 155.2 101.4 high 153%
Condobolin Airport AWS 15.5 -0.7 22.5 30 Aug 2.9 -0.4 -3.6 6 Aug 148.4 101.3 high 146%
Peak Hill Post Office 16.0 -0.3 22.5 30 Aug 5.8 +0.3 -0.4 6 Aug 184.0 129.7 high 142%
West Wyalong Airport AWS 14.7 -0.5 22.1 30 Aug 3.7 +0.3 -2.8 6 Aug 165.2 121.2 high 136%
Central Western Plains (North) (district 51)
Coonamble Airport AWS 17.6 -0.6 24.5 30 Aug 4.4 +0.2 -1.5 25 Aug 85.0 102.9 average 83%
Girilambone (Okeh) AWS 17.4   26.3 30 Aug 5.0   -1.1 6 Aug 82.4
Trangie Research Station AWS 16.9 +0.5 23.4 30 Aug 4.4 +0.5 -2.6 6 Aug 123.0 102.1 high 120%
Walgett (Brewon AWS) 19.4   27.0 30 Aug 3.7   -2.8 7 Jun 58.2
Northwest Plains (West) (district 52)
Mungindi Post Office 20.9 +1.0 28.6 31 Aug 5.4 -0.1 0.2 27 Aug 54.6 90.7 low 60%
Walgett Airport AWS 19.1 -0.5 25.6 30 Aug 4.2 -0.1 -2.8 28 Jun 115.0 80.5 high 143%
Northwest Plains (East) (district 53)
Moree Aero 19.7 +0.4 27.1 31 Aug 5.4 +0.2 -1.4 6 Jul 53.8 95.9 average 56%
Northwest Slopes (North) (district 54)
Barraba (Clifton Lane) 17.3 +0.2 24.2 31 Aug 0.7 -0.3 -7.2 6 Aug 86.4 128.5 low 67%
Narrabri Airport AWS 19.0 +0.1 25.8 31 Aug 4.8 0.0 -2.5 6 Aug 63.2 107.0 low 59%
Northwest Slopes (South) (district 55)
Gunnedah Airport AWS 18.0 -0.3 25.0 31 Aug 2.9 +0.2 -5.2 6 Aug 103.8 100.0 average 104%
Quirindi Post Office 17.5 +0.6 24.0 31 Aug 2.9 +0.6 -4.2 6 Aug 155.5 142.7 average 109%
Tamworth Airport AWS 17.3 0.0 24.1 31 Aug 3.4 +0.5 -4.7 6 Aug 95.6 129.8 average 74%
Woolbrook (Woolbrook Road) 13.3 -0.3 19.5 31 Aug 1.0 +1.6 -8.5 6 Aug 121.8 147.5 average 83%
Northern Tablelands (West) (district 56)
Armidale (Tree Group Nursery) 13.9 0.0 19.7 31 Aug 0.6 +0.6 -8.7 6 Aug 125.0 121.9 average 103%
Armidale Airport AWS 12.6 -0.4 18.5 31 Aug 2.1 +0.3 -4.8 21 Jul 139.4 132.4 average 105%
Glen Innes Ag Research Stn 14.1 +0.7 20.5 14 Aug 1.9 +0.6 -4.5 6 Aug 152.9 156.2 average 98%
Glen Innes Airport AWS 14.3 +0.2 21.6 14 Aug -0.1 +0.5 -9.7 6 Aug 166.2 148.2 high 112%
Guyra Hospital 11.6 +0.2 17.1 14 Aug 1.3 0.0 -4.1 6 Jul 167.2 158.8 average 105%
Inverell (Raglan St) 17.3 -0.2 22.7 31 Aug 1.1 +0.6 -6.5 6 Aug 95.8 123.9 average 77%
Inverell Research Centre 16.7 +0.7 22.3 31 Aug 4.7 +0.4 -2.4 6 Aug 95.2 135.8 low 70%
Tenterfield (Federation Park) 15.7 +0.5 24.2 14 Aug 1.7 0.0 -5.6 25 Aug 122.5 146.3 average 84%
Northern Tablelands (East) (district 57)
Tabulam (Muirne) 17.5 +0.4 23.4 31 Aug 8.5 +0.6 2.9 5 Jul 144.2 142.0 average 102%
Upper North Coast (district 58)
Ballina Airport AWS 20.5 -0.1 25.6 31 Aug 10.2 +1.1 2.9 5 Jul 369.6 393.1 average 94%
Byron Bay (Cape Byron AWS) 19.5 0.0 24.6 19 Aug 13.1 +0.2 9.1 24 Aug 249.6 324.4 low 77%
Casino Airport AWS 21.7 +0.3 28.0 31 Aug 7.4 +0.1 1.2 25 Aug 149.0 153.3 average 97%
Evans Head RAAF Bombing Range AWS 20.6 +0.2 27.3 31 Aug 11.0 +0.2 4.9 5 Jul 384.8 336.9 average 114%
Grafton Airport AWS 21.1 -0.1 28.0 31 Aug 6.5 +0.4 -0.7 5 Jul 172.8 179.9 average 96%
Grafton Research Stn 21.3 +0.3 27.6 31 Aug 8.6 +1.2 1.7 5 Jul 144.2 163.6 average 88%
Lismore Airport AWS 21.2 -0.3 27.6 31 Aug 7.4 +0.5 0.9 5 Jul 198.4 192.5 average 103%
Murwillumbah (Bray Park) 21.8 +0.2 28.3 13 Aug 9.8 +0.8 2.2 5 Jul 284.6 221.0 high 129%
Yamba Pilot Station 20.6 +1.0 27.0 31 Aug 11.4 +1.0 6.4 5 Jul 344.8 313.8 average 110%
Lower North Coast (district 59)
Coffs Harbour Airport 20.1   26.0 15 Aug 8.9   1.1 5 Jul 244.2
Dorrigo (Old Coramba Rd) 15.2 -0.1 22.0 31 Aug 5.5 +0.6 -0.5 6 Aug 215.9 282.4 average 76%
Kempsey Airport AWS 20.4 -0.3 27.9 31 Aug 6.8 +1.2 -1.6 6 Aug 177.8 179.6 average 99%
Manning (district 60)
Port Macquarie Airport AWS 19.7 +0.1 28.1 31 Aug 7.9 +0.8 0.6 21 Jul 270.8 266.6 average 102%
Taree Airport AWS 19.1 -0.2 27.4 31 Aug 8.0 +0.8 1.1 6 Aug 231.6 204.6 average 113%
Yarras (Mount Seaview) 19.5 +0.2 27.4 31 Aug 7.5 +1.3 1.8 6 Aug 344.4 251.9 high 137%
Hunter (district 61)
Cessnock Airport AWS 18.3 0.0 25.4 31 Aug 5.9 +1.1 -1.0 27 Aug 189.2 120.5 high 157%
Cooranbong (Lake Macquarie AWS) 18.7 -0.3 25.2 30 Aug 5.9 +0.3 -0.6 27 Aug 313.4 212.5 high 147%
Gosford AWS 18.2   25.7 30 Aug 7.8   3.3 29 Aug 279.2
Maitland Airport AWS 18.4   25.3 31 Aug 7.0   1.3 27 Aug 186.8
Mangrove Mountain AWS 17.0 +0.7 24.6 30 Aug 6.3 -0.3 0.6 6 Aug 327.8 217.8 high 151%
Merriwa (Roscommon) 16.2 -0.7 22.4 30 Aug 3.1 +0.2 -4.0 26 Aug 117.0 107.8 average 109%
Murrurundi (Haydon Street) 16.2   21.3 13 Aug 3.2   -5.0 6 Aug 168.1
Murrurundi Gap AWS 12.9 -0.5 19.6 31 Aug 5.4 -0.1 -1.8 21 Jul 174.8 151.5 average 115%
Newcastle Nobbys Signal Station AWS 18.1 +0.6 25.3 31 Aug 10.2 +1.0 5.6 6 Aug 241.2 282.7 average 85%
Norah Head AWS 18.3 +0.2 24.2 31 Aug 10.7 +0.3 5.9 6 Aug 379.4 313.1 average 121%
Paterson (Tocal AWS) 18.1 -0.2 25.4 31 Aug 7.3 +0.5 1.1 27 Aug 181.6 155.9 high 116%
Scone Airport AWS 17.4 -0.1 23.9 31 Aug 4.3 +0.4 -2.6 26 Aug 141.0 118.7 high 119%
Singleton Defence AWS 18.1   24.9 31 Aug 7.3   0.2 6 Aug 180.0
Williamtown RAAF 18.4 +0.5 25.5 31 Aug 7.8 +0.7 2.0 27 Aug 363.0 269.5 high 135%
Central Tablelands (North) (district 62)
Mudgee Airport AWS 15.2 -0.1 21.1 30 Aug 2.2 +0.6 -4.5 6 Aug 147.2 122.1 high 121%
Nullo Mountain AWS 10.0 0.0 15.6 30 Aug 3.0 0.0 -2.5 5 Aug 262.8 191.0 high 138%
Central Tablelands (South) (district 63)
Bathurst Agricultural Station 13.2 +1.0 19.0 29 Aug 1.7 +0.6 -4.5 6 Aug 154.5 141.6 average 109%
Bathurst Airport AWS 13.0 +0.2 18.8 30 Aug 1.7 +0.5 -4.3 6 Jun 174.4 120.4 high 145%
Katoomba (Farnells Rd) 11.9 +1.6 19.0 29 Aug 2.9 -0.3 -1.7 5 Aug 333.7 279.0 high 120%
Lithgow (Cooerwull) 11.8 +0.2 18.4 29 Aug 1.8 +0.4 -4.8 26 Aug 247.8 190.9 high 130%
Marrangaroo (Defence) 11.8   18.6 29 Aug 1.1   -5.3 26 Aug 255.6
Mount Boyce AWS 10.8 +0.5 18.8 29 Aug 3.2 +0.1 -2.5 25 Aug 297.8 177.5 high 168%
Oberon (Albion St) 10.7 +1.1 16.6 29 Aug 0.2 -0.1 -5.1 23 Jul 222.4 221.5 average 100%
Orange Airport AWS 10.5 -0.2 17.3 29 Aug 0.9 +0.1 -5.8 27 Aug 269.0 231.7 average 116%
Springwood (Valley Heights) 16.8 +0.1 24.5 30 Aug 7.4 +0.2 1.5 6 Aug 200.8 185.7 average 108%
Central Western Slopes (North) (district 64)
Coonabarabran (Showgrounds) 15.8 0.0 22.1 31 Aug 1.9 +1.1 -4.0 6 Aug 151.9 162.5 average 93%
Coonabarabran Airport AWS 14.4 -0.7 20.2 13 Aug 5.8 0.0 0.9 13 Jul 152.4 124.3 average 123%
Dunedoo Post Office 16.1 -0.2 23.2 30 Aug 2.8 -0.1 -3.5 6 Aug 146.8 129.9 average 113%
Central Western Slopes (South) (district 65)
Cowra Airport AWS 14.7 -0.4 21.0 29 Aug 3.6 +0.9 -2.6 6 Aug 211.0 135.0 high 156%
Dubbo Airport AWS 16.3 -0.2 22.6 30 Aug 3.7 +0.2 -3.4 6 Aug 153.8 124.1 average 124%
Forbes Airport AWS 15.1 -0.5 21.6 30 Aug 3.4 +0.5 -2.9 5 Aug 158.6 121.9 high 130%
Parkes Airport AWS 14.6 -0.6 20.8 13 Jun 3.1 +0.4 -4.2 5 Aug 193.2 143.1 high 135%
Wellington (D&J Rural) 16.2 +0.1 22.5 30 Aug 3.3 +0.4 -4.0 6 Aug 152.1 148.2 average 103%
Metropolitan (East) (district 66)
Bankstown Airport AWS 18.6 +0.5 26.2 30 Aug 7.0 +1.0 2.3 25 Aug 234.8 174.1 high 135%
Canterbury Racecourse AWS 18.4 +0.2 25.7 30 Aug 6.7 +0.3 1.7 25 Aug 274.0 228.7 average 120%
Holsworthy Aerodrome AWS 17.9   25.3 30 Aug 6.6   1.2 26 Aug 243.4
Parramatta North (Masons Drive) 18.4 +0.3 25.5 30 Aug 7.1 +0.2 1.7 25 Aug 249.2 194.0 high 128%
Sydney (Observatory Hill) 18.6 +1.5 25.3 30 Aug 9.7 +0.9 6.3 5 Aug 320.4 311.3 average 103%
Sydney Airport AMO 18.5 +0.8 26.8 30 Aug 9.7 +1.6 6.2 25 Aug 263.4 269.5 average 98%
Sydney Harbour (Wedding Cake West) 17.9 +0.2 22.5 2 Jul 11.4 +0.4 7.6 5 Aug
Sydney Olympic Park AWS (Archery Centre) 18.8   26.5 30 Aug 7.3   2.6 25 Aug 236.6
Terrey Hills AWS 16.8 -0.1 24.3 30 Aug 8.4 +0.1 3.0 6 Aug 264.4 253.1 average 104%
Metropolitan (West) (district 67)
Badgerys Creek AWS 18.3 +0.1 28.6 30 Aug 5.6 +0.8 0.5 25 Aug 177.8 120.1 high 148%
Horsley Park Equestrian Centre AWS 17.9 -0.1 25.4 30 Aug 6.5 0.0 1.6 25 Aug 232.0 150.4 high 154%
Penrith Lakes AWS 19.0 +0.3 26.6 30 Aug 6.2 +0.1 0.7 6 Aug 178.4 107.6 high 166%
Richmond RAAF 18.7 +0.2 26.6 30 Aug 5.2 +0.8 -0.9 6 Aug 166.8 116.0 high 144%
Illawarra (district 68)
Albion Park (Shellharbour Airport) 18.1 -0.1 24.5 30 Aug 7.6 +1.0 1.2 26 Aug 398.0 203.3 v high 196%
Bellambi AWS 17.7 +0.1 24.1 30 Aug 10.5 -0.1 6.2 26 Aug 396.6 295.8 high 134%
Camden Airport AWS 18.3 +0.2 25.4 30 Aug 4.9 +1.1 -1.2 27 Aug 177.0 146.1 high 121%
Campbelltown (Mount Annan) 18.5 +0.2 25.4 30 Aug 5.3 +0.6 -0.3 5 Aug 205.6 160.5 high 128%
High Range AWS (Wanganderry) 11.3   18.0 30 Aug 4.6   -0.1 5 Aug 196.6
Holsworthy Defence AWS 17.3   25.0 30 Aug 6.8   2.2 26 Aug 293.0
Jervis Bay (Point Perpendicular) 16.4 -0.1 23.9 30 Aug 10.9 +0.5 6.5 26 Aug 503.8 338.9 high 149%
Jervis Bay NSW (Jervis Bay Airfield AWS) 16.7   24.7 30 Aug 8.9   3.5 29 Aug 552.4
Kiama (Bombo Headland) 17.6 0.0 23.7 2 Jul 10.8 +0.1 6.8 5 Aug 352.2 248.7 high 142%
Moss Vale AWS 12.7 +0.1 19.6 29 Aug 3.5 +0.6 -2.8 5 Jun 355.6 186.3 v high 191%
Nowra RAN Air Station AWS 17.4 +0.1 25.1 30 Aug 7.8 +0.8 1.4 27 Aug 649.2 258.8 highest 251%
South Coast (district 69)
Bega AWS 17.5 +0.5 27.8 30 Aug 3.8 +0.8 -2.7 28 Jun 353.0 142.1 v high 248%
Braidwood Racecourse AWS 13.0 +0.2 19.6 29 Aug 1.2 +0.7 -6.0 5 Jun 287.0 144.6 v high 198%
Green Cape AWS 15.5 -0.5 20.8 16 Jun 9.9 +0.2 6.0 5 Aug 202.0 137.6 high 147%
Merimbula Airport AWS 16.8 -0.2 27.4 30 Aug 5.5 +0.7 -0.5 5 Aug 306.0 166.9 v high 183%
Montague Island Lighthouse 16.3 +0.3 23.1 30 Aug 11.3 +0.8 7.9 28 Aug 274.0 198.0 high 138%
Moruya Airport AWS 17.6 0.0 25.8 30 Aug 5.4 +0.8 -1.5 6 Aug 417.2 192.1 highest 217%
Moruya Heads Pilot Station 17.1 +0.4 25.4 30 Aug 8.0 +1.5 2.5 6 Aug 410.4 198.6 v high 207%
Narooma (Marine Rescue) 17.2 +0.5 27.5 30 Aug 7.8 +0.4 2.6 6 Aug 449.6 192.3 v high 234%
Nerriga AWS 13.0   18.9 29 Aug 2.8   -2.8 6 Jun 311.2
Ulladulla AWS 16.9 0.0 24.5 30 Aug     5.6 6 Aug 588.2 273.3 highest 215%
Southern Tablelands (Goulburn-Monaro) (district 70)
Bombala (Therry Street) 12.7 +0.9 21.7 30 Aug 0.6 +1.1 -6.0 5 Jun 271.8 146.2 v high 186%
Bombala AWS 11.0 -0.3 19.6 30 Aug 1.1 +0.8 -4.9 5 Jun 221.0 120.5 high 183%
Canberra Airport 13.2 -0.2 18.6 29 Aug 1.4 +0.8 -4.9 5 Jun 187.4 124.3 high 151%
Cooma Airport AWS 11.0 0.0 19.7 29 Aug -0.6 +1.0 -7.9 6 Jun 190.0 101.3 v high 188%
Goulburn Airport AWS 12.7 +0.1 18.1 30 Aug 1.1 +0.4 -6.1 22 Jul 208.8 132.0 high 158%
Goulburn TAFE 12.3 -0.1 18.4 29 Aug 2.6 +0.5 -3.1 23 Jul 218.8 147.1 high 149%
Mount Ginini AWS 3.8 +0.4 9.9 29 Aug -1.4 +0.5 -7.2 5 Aug 358.0 271.0 high 132%
Taralga Post Office 11.6 +0.4 18.0 30 Aug 1.1 -0.1 -5.5 4 Jun 278.8 209.8 high 133%
Tuggeranong (Isabella Plains) AWS 13.2 0.0 18.9 30 Aug 1.1 +0.4 -4.7 6 Aug 192.0 139.0 high 138%
Southern Tablelands (Snowy Mountains) (district 71)
Perisher Valley AWS 4.0 +0.3 11.0 2 Aug -3.4 +0.3 -11.3 25 Aug 658.2 669.3 average 98%
Thredbo AWS 1.3 +0.6 8.2 18 Jun -3.7 +0.9 -9.3 6 Aug 358.8 315.5 average 114%
Thredbo Village 6.7 +0.5 12.0 29 Aug -2.4 +0.4 -7.5 23 Jul 537.9 512.1 average 105%
Southwest Slopes (South) (district 72)
Albury Airport AWS 14.0 0.0 20.1 30 Aug 3.4 0.0 -2.2 6 Aug 174.2 190.8 average 91%
Hume Reservoir 13.6 +0.4 20.1 30 Aug 4.8 +0.2 -0.7 6 Aug 217.0 218.6 average 99%
Tumbarumba Post Office 12.5 +0.9 19.0 29 Aug 0.8 +0.5 -5.5 6 Aug 260.4 312.1 average 83%
Wagga Wagga AMO 13.8 +0.1 20.5 30 Aug 3.6 +0.3 -3.2 6 Aug 155.2 155.9 average 100%
Southwest Slopes (North) (district 73)
Cootamundra Airport 13.7 -0.2 20.0 30 Aug 2.3 +0.8 -4.4 6 Aug 222.0 167.5 high 133%
Grenfell (Manganese Rd) 13.8 -0.1 19.9 30 Aug 3.3 -0.3 -2.8 6 Aug 225.1 169.2 high 133%
Temora Airport 13.9 -0.7 19.9 30 Aug 2.7 +0.3 -4.0 6 Aug 194.6 125.4 high 155%
Young Airport             245.4 168.4 high 146%
Riverina (East) (district 74)
Corowa Airport     21.5 30 Aug 2.9 -0.5 -2.2 24 Jul 151.8 163.4 average 93%
Deniliquin Airport AWS 14.8 -0.4 23.4 30 Aug 2.9 -0.9 -3.4 6 Aug 88.8 90.6 average 98%
Kapooka (Defence) 14.1   20.6 30 Aug 3.3   -4.3 6 Aug 167.8
Narrandera Airport AWS 15.1 -0.1 22.9 30 Aug 3.4 -0.1 -3.9 6 Aug 117.8 113.9 average 103%
Tocumwal Airport 14.4 -0.4 21.8 30 Aug 3.9 -0.1 -2.7 24 Jul
Yanco Agricultural Institute 15.0 -0.3 23.1 30 Aug 4.7 -0.5 -0.9 6 Aug 73.4 103.1 low 71%
Riverina (West) (district 75)
Griffith Airport AWS 15.7 +0.2 24.5 30 Aug 3.6 -0.3 -4.0 6 Aug 83.6 102.6 average 81%
Hay Airport AWS 15.9 -0.6 24.7 30 Aug 2.9 -0.9 -3.5 8 Jun 92.4 68.7 high 134%
Hillston Airport 16.2 +0.2 25.5 30 Aug 3.5 -1.0 -3.2 6 Aug 79.7 96.4 average 83%
Lake Cargelligo Airport 15.7 -0.7 25.8 30 Aug 4.2 0.0 -2.0 6 Aug 92.2 104.5 average 88%
Note: From 2017, information about Lord Howe and Norfolk Islands can be found in the climate summary for the Remote Islands and Antarctica

Notes

The Seasonal climate summary, generally published on the first working day of each month, lists 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. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

This statement has been prepared based on information available at 10 am on Tuesday 1 September 2020. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.

Averages for individual sites 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 10 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.

Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.

Further information

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