New South Wales in August 2020: wet and cool

It was wet across much of New South Wales this month, with above-average rainfall in north-west and the South Coast region. Daytime temperatures were generally below average, and the coolest August since 2010. Minimum temperatures were slightly above-average overall.

Heavy rain early in the month

  • Rainfall was above average across much of the state in August, particularly in the north-west and over the South Coast region.
  • For the state as a whole, rainfall was around 24% above the historical average and the wettest August since 2016.
  • A cold air outbreak, with a complex low pressure system, brought rain to much of inland New South Wales early in the month.
  • The typically dry north-west area received over three times its average August rainfall in some parts.
  • The complex low-pressure system then brought heavy rain to the South Coast region during 8–10 August, with up to 370 mm reported at some sites over the three day period.
  • The heaviest falls were on the 9th, when some sites had their highest August daily rainfall on record.
  • Overall, some sites had their highest total August rainfall on record or their highest total August rainfall for at least 20 years.

Generally cool days

  • Conditions were generally cool for most of August, with a succession of fronts bringing a west to south-westerly flow over the state.
  • For the state as whole, the mean daytime maximum temperature was 0.11 °C below average, the coolest August since 2010.
  • A cold air outbreak, with daytime temperatures up to 10 degrees below the August average, covered much of the state during 6–8 August.
  • Some sites had their coldest August day on record, while the Armidale town site and Lake Victoria had their lowest August temperatures on record.
  • Cloudy conditions meant that minimum temperatures were above average along much of the coast.
  • The mean minimum temperature for the state as a whole was 0.48 °C above average, the warmest since 2016.

Snow to low levels

  • A series of cold fronts brought cold and windy conditions to alpine areas during 21–23 August.
  • On the 22nd, this brought up to 30 cm of snow to the hills around Orange, falls above 750 m around Canberra and light falls in the Blue Mountains.
  • The maximum temperature of -5.1 °C at Thredbo AWS on the 22nd is the coldest in Australia this winter.

Further information

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Extremes in August 2020
Hottest day 28.9 °C at Smithville AWS on the 30th
Warmest days on average 23.2 °C at Casino Airport AWS
Coolest days on average 0.0 °C at Thredbo AWS
Coldest day -5.1 °C at Thredbo AWS on the 22nd
Coldest night -11.3 °C at Perisher Valley AWS on the 25th
Coolest nights on average -4.3 °C at Thredbo AWS
Warmest nights on average 13.0 °C at Byron Bay (Cape Byron AWS)
Warmest night 16.4 °C at Coffs Harbour Airport on the 15th
Warmest on average overall 16.8 °C at Byron Bay (Cape Byron AWS)
Coolest on average overall -2.2 °C at Thredbo AWS
Wettest overall 386.0 mm at Nowra Boat Shed (Shoalhaven River)
Wettest day 204.0 mm at Nowra Boat Shed (Shoalhaven River) on the 8th
Strongest wind gust 137 km/h at Thredbo AWS on the 27th

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 August daily rainfall
New record
(mm)
Old
record
Years of
record
Kangiara (Laverstock) 68.0 on the 9th 46.0 on the 3rd in 1951 112
Bowning (Wanganui) 55.2 on the 9th 52.6 on the 18th in 1925 88
Sutton (Uba) 59.8 on the 9th 50.4 on the 27th in 1974 51
Araluen Lower (Araluen Rd) 159.0 on the 9th 111.0 on the 18th in 2014 40
Hay (Bedarbidgal) 43.8 on the 9th 32.0 on the 14th in 2003 34
Braidwood Racecourse AWS 83.8 on the 9th 68.0 on the 28th in 2001 31
Wilsons Downfall 42.0 on the 15th 41.6 on the 11th in 2010 28
Goulburn Airport AWS 75.2 on the 9th 48.6 on the 18th in 2014 27
Deniliquin Airport AWS 33.2 on the 8th 26.2 on the 16th in 2017 24
Nicholls (Gungahlin Lakes) 68.0 on the 9th 44.0 on the 31st in 2004 23
Tibooburra Airport 24.2 on the 7th 23.8 on the 15th in 2014 23
Blackheath (Wombat Street) 55.0 on the 10th 41.0 on the 20th in 2007 21
Bettowynd (Nobbys Hill) 181.0 on the 9th 76.0 on the 18th in 2014 20
Jervis Bay (Point Perpendicular) 91.0 on the 9th 85.4 on the 25th in 2016 20
Moruya (Burra Creek) 143.0 on the 9th 96.0 on the 18th in 2014 20
Nowra Boat Shed (Shoalhaven River) 204.0 on the 8th 198.0 on the 26th in 2015 20



Record highest August total rainfall
New record
(mm)
Old
record
Years of
record
Average for
August
Wanaaring Post Office 75.4 67.8 in 1960 134 15.2
Bowning (Wanganui) 180.6 160.7 in 1974 89 65.6
Goulburn (Cherryton) 194.4 165.2 in 1990 66 49.8
Hay (Bedarbidgal) 88.2 73.0 in 2003 33 35.0
Goulburn Airport AWS 157.8 116.8 in 2014 27 42.9
Tibooburra Airport 44.6 31.0 in 2014 23 8.7
West Wyalong Airport AWS 74.4 72.0 in 2000 22 36.9
Bettowynd (Nobbys Hill) 285.0 218.0 in 2014 20 47.0
Hillview (Shoalhaven River) 141.0 112.0 in 2015 20 39.8
Moruya (Burra Creek) 240.0 = 240.0 in 2014 20 50.7
Tarana (Fish River) 87.0 77.0 in 2016 20 37.2

Highest August total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
August
Murrumburrah (Historical Society) 113.2 125.6 in 1939* 54.4
Wanaaring (Owen Downs) 51.4 61.7 in 1960 13.1
Bungonia (Inverary Park) 175.2 185.1 in 1974 45.8
Marulan (George St) 174.5 189.2 in 1974* 46.7
Tibooburra (Fort Grey) 32.0 39.2 in 1973* 10.1
Fairlight Station 171.6 183.8 in 1985 76.0
Bruce (Australian Institute of Sport) 134.2 140.8 in 1985* 54.8
Goulburn TAFE 170.0 189.2 in 1990 54.4
Crookwell Post Office 180.2 204.4 in 1990* 89.5
Kangiara (Laverstock) 136.4 153.0 in 1985* 64.6
Ardlethan Post Office 73.2 80.8 in 1992* 41.8
Braidwood Racecourse AWS 155.0 212.4 in 1998 52.7
Captains Flat (Foxlow St) 185.0 206.0 in 1998 61.3
Hampton (Bindo) 144.0 244.0 in 1990* 86.2
Snowball 193.0 316.0 in 1998 63.3
Taralga Post Office 144.3 200.7 in 1998 67.7
Torrens (Darke St) 105.0 132.4 in 1998 50.6
Yalgogrin North (Roloma) 64.8 76.6 in 1998 39.6
Aranda (Bindaga St) 85.2 136.0 in 1998* 52.8
Cobargo Post Office 169.4 251.2 in 1998* 51.8
Lithgow (Cooerwull) 110.6 185.6 in 1967* 57.6
Nicholls (Gungahlin Lakes) 112.8 118.1 in 1998* 56.3
Braidwood (Krawarree) 226.4 279.8 in 1998* 49.3
Camden Airport AWS 82.6 262.0 in 1998* 41.1
Nimmitabel Wastewater Treatment Facility 90.4 111.3 in 1998* 45.4

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




Record highest August temperature
New record
(°C)
Old
record
Years of
record
Average for
August
Narooma (Marine Rescue) 27.5 on the 30th = 27.5 on the 23rd in 1995 36 16.9



Record lowest August daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
August
Lake Victoria Storage 8.0 on the 7th 9.4 on the 3rd in 1986 94 17.2
Broken Hill Airport AWS 6.7 on the 7th 8.0 on the 10th in 2003 31 17.9
Walgett Airport AWS 12.0 on the 8th = 12.0 on the 1st in 1998 28 21.1
Richmond RAAF 12.3 on the 7th 12.6 on the 24th in 2016 27 19.8
Deniliquin Airport AWS 9.4 on the 7th = 9.4 on the 3rd in 2017 24 16.2
Tibooburra Airport 12.0 on the 7th 12.8 on the 2nd in 2010 23 20.9
Bourke Airport AWS 12.1 on the 6th 12.3 on the 23rd in 2010 21 21.3
Ivanhoe Aerodrome AWS 9.6 on the 8th 11.0 on the 27th in 2001 21 18.8
Wilcannia Aerodrome AWS 10.4 on the 7th 11.2 on the 22nd in 2016 21 20.0
Kempsey Airport AWS 12.9 on the 7th 13.0 on the 18th in 2004 20 21.7



Record lowest August temperature
New record
(°C)
Old
record
Years of
record
Average for
August
Lake Victoria Storage -3.0 on the 5th -2.6 on the 4th in 2014 55 6.1
Armidale (Tree Group Nursery) -8.7 on the 6th -8.6 on the 14th in 2002 24 -0.4



Summary statistics for August 2020
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
August
2020
Diff
from
average
Highest for
August
2020
Mean for
August
2020
Diff
from
average
Lowest for
August
2020
Total for
August
2020
Average
for
August
Rank of
August
2020
Fraction of
August
average
Western (Far Northwest) (district 46)
Fowlers Gap AWS 18.2 -1.4 27.9 30th 5.8 +0.2 0.1 5th 20.8 10.7 high 194%
Smithville AWS 19.4   28.9 30th 7.1   1.9 1st 32.6
Tibooburra Airport 19.5 -1.4 28.8 30th 8.6 +0.8 5.0 10th 44.6 8.7 highest 513%
White Cliffs AWS 18.5 -1.6 28.5 30th 7.0 0.0 1.4 5th 27.0 12.7 high 213%
Wilcannia Aerodrome AWS 18.5 -1.5 28.3 30th 4.8 0.0 -3.2 5th 28.6 15.3 high 187%
Western (Lower Darling) (district 47)
Broken Hill Airport AWS 16.6 -1.3 25.7 30th 6.1 +0.5 0.6 5th 26.4 18.3 high 144%
Lake Victoria Storage 16.7 -0.5 24.5 27th 5.7 -0.4 -3.0 5th 33.1 23.5 high 141%
Menindee Post Office 18.6 -0.7 28.2 30th 5.3 0.0 -1.0 5th 31.1 18.1 high 172%
Mulurulu AWS 17.1   26.1 30th 4.0   -4.5 5th 37.0
Pooncarie Mail Agency 18.2 -1.2 27.5 30th 5.5 +0.1 -1.3 5th 41.2 22.7 high 181%
Western (Upper Darling) (district 48)
Bourke Airport AWS 19.9 -1.4 28.6 30th 5.8 +0.9 0.4 1st 33.0 13.3 high 248%
Brewarrina Hospital 20.2 -0.4 27.4 31st 5.3 -0.3 -0.5 6th 21.6 21.3 average 101%
Cobar Airport AWS 17.4 -1.5 26.8 30th     -3.6 5th 43.2 18.7 high 231%
Cobar MO 17.3 -0.8 26.9 30th 5.8 -0.4 0.6 5th 47.6 26.2 high 182%
Collarenebri (Albert St) 21.3 +0.4 27.3 31st     -1.0 27th 20.4 26.2 average 78%
Noona AWS 17.5   27.3 30th 6.2   1.0 5th 34.6
Wanaaring (Delta AWS) 19.3   28.2 30th 5.1   -0.7 1st 45.8
Wanaaring Post Office 20.4 -1.0 28.0 30th 6.0 +0.9 0.1 2nd 75.4 15.2 highest 496%
Western (Southwest Plains) (district 49)
Balranald (RSL) 17.0 -0.6 26.0 30th 4.5 -0.2 -0.7 26th 51.5 29.5 high 175%
Euabalong (Mount Hope AWS) 16.4   26.0 30th 2.6   -6.0 5th 60.8
Ivanhoe Aerodrome AWS 17.3 -1.5 27.0 30th 5.9 +0.1 -0.6 5th 28.0 18.9 high 148%
Central Western Plains (South) (district 50)
Condobolin Ag Research Stn 15.7 -1.2 22.5 30th 3.2 -0.3 -3.3 6th 65.0 33.4 v high 195%
Condobolin Airport AWS 15.7 -1.6 22.5 30th 2.7 -0.3 -3.6 6th 59.4 27.5 high 216%
Peak Hill Post Office 15.7 -1.4 22.5 30th 5.2 -0.4 -0.4 6th 50.4 42.1 average 120%
West Wyalong Airport AWS 14.7 -1.4 22.1 30th 4.1 +0.8 -2.8 6th 74.4 36.9 highest 202%
Central Western Plains (North) (district 51)
Coonamble Airport AWS 17.9 -1.5 24.5 30th 3.4 -0.5 -1.5 25th 16.0 23.4 average 68%
Girilambone (Okeh) AWS 17.9   26.3 30th 4.4   -1.1 6th 21.6
Trangie Research Station AWS 16.8 -0.6 23.4 30th 3.7 -0.3 -2.6 6th 38.4 31.6 high 122%
Walgett (Brewon AWS) 20.0   27.0 30th 3.8   -1.5 25th 18.2
Northwest Plains (West) (district 52)
Mungindi Post Office 21.3 +0.1 28.6 31st 5.1 -0.8 0.2 27th 33.4 25.1 high 133%
Walgett Airport AWS 19.5 -1.6 25.6 30th 4.0 -0.2 -2.6 6th 32.6 19.5 high 167%
Northwest Plains (East) (district 53)
Moree Aero 20.2 -0.3 27.1 31st 4.8 -0.4 -1.3 26th 32.4 25.0 average 130%
Northwest Slopes (North) (district 54)
Barraba (Clifton Lane) 17.5 -0.6 24.2 31st 0.9 -0.1 -7.2 6th 46.0 39.5 average 116%
Narrabri Airport AWS 19.3 -0.8 25.8 31st 4.0 -0.6 -2.5 6th 26.6 29.4 average 90%
Northwest Slopes (South) (district 55)
Gunnedah Airport AWS 18.2 -1.3 25.0 31st 2.1 -0.2 -5.2 6th 40.6 29.9 average 136%
Quirindi Post Office 17.5 -0.5 24.0 31st 3.1 +0.7 -4.2 6th 42.2 44.2 average 95%
Tamworth Airport AWS 17.6 -0.8 24.1 31st 2.9 +0.2 -4.7 6th 29.2 37.7 average 77%
Woolbrook (Woolbrook Road) 13.5 -0.9 19.5 31st 0.6 +1.5 -8.5 6th 39.6 51.8 average 76%
Northern Tablelands (West) (district 56)
Armidale (Tree Group Nursery) 14.5 -0.4 19.7 31st 0.2 +0.6 -8.7 6th 44.2 43.4 average 102%
Armidale Airport AWS 13.3 -0.7 18.5 31st 1.8 +0.1 -4.7 25th 44.2 43.2 average 102%
Glen Innes Ag Research Stn 14.0 -0.2 20.5 14th 2.0 +0.8 -4.5 6th 57.4 48.3 average 119%
Glen Innes Airport AWS 14.7 -0.3 21.6 14th -0.1 +1.0 -9.7 6th 59.8 48.7 high 123%
Guyra Hospital 12.0 -0.3 17.1 14th 1.1 -0.1 -4.1 24th 49.0 51.9 average 94%
Inverell (Raglan St) 17.4 -1.1 22.7 31st 0.7 +0.4 -6.5 6th 30.8 35.7 average 86%
Inverell Research Centre 17.0 +0.2 22.3 31st 4.1 -0.2 -2.4 6th 28.6 43.6 average 66%
Tenterfield (Federation Park) 16.3 +0.2 24.2 14th 1.7 0.0 -5.6 25th 54.8 43.3 high 127%
Northern Tablelands (East) (district 57)
Tabulam (Muirne) 18.6 +0.3 23.4 31st 8.3 +0.3 3.7 23rd 35.8 38.6 average 93%
Upper North Coast (district 58)
Ballina Airport AWS 21.4 0.0 25.6 31st 8.9 +0.2 3.6 25th 55.0 79.5 average 69%
Byron Bay (Cape Byron AWS) 20.7 +0.6 24.6 19th 13.0 -0.1 9.1 24th 36.8 70.4 average 52%
Casino Airport AWS 23.2 +0.6 28.0 31st 6.7 -0.3 1.2 25th 16.0 44.4 average 36%
Evans Head RAAF Bombing Range AWS 22.0 +0.5 27.3 31st 10.2 -0.5 6.3 23rd 60.6 79.3 average 76%
Grafton Airport AWS 22.5 0.0 28.0 31st 6.1 +0.3 1.0 25th 32.6 57.1 average 57%
Grafton Research Stn 22.6 +0.7 27.6 31st 8.2 +1.0 2.4 6th 26.2 39.4 average 66%
Lismore Airport AWS 22.6 -0.2 27.6 31st 6.8 +0.3 1.9 25th 29.2 60.2 average 49%
Murwillumbah (Bray Park) 23.0 +0.5 28.3 13th 8.8 +0.1 3.5 22nd 26.0 52.5 average 50%
Yamba Pilot Station 21.8 +1.6 27.0 31st 11.1 +0.6 7.5 25th 64.4 75.7 average 85%
Lower North Coast (district 59)
Coffs Harbour Airport 21.1   26.0 15th 7.3   2.3 24th 33.6
Dorrigo (Old Coramba Rd) 16.4 +0.2 22.0 31st 4.5 -0.2 -0.5 6th 21.6 93.2 average 23%
Kempsey Airport AWS 21.2 -0.5 27.9 31st 5.9 +0.8 -1.6 6th 33.2 49.8 average 67%
Manning (district 60)
Port Macquarie Airport AWS 20.4 +0.1 28.1 31st 6.5 -0.1 2.0 6th 30.0 60.5 average 50%
Taree Airport AWS 19.9 -0.3 27.4 31st 6.8 +0.1 1.1 6th 30.4 47.6 average 64%
Yarras (Mount Seaview) 20.4 0.0 27.4 31st 6.7 +0.7 1.8 6th 68.4 71.1 average 96%
Hunter (district 61)
Cessnock Airport AWS 18.7 -0.8 25.4 31st 5.6 +1.2 -1.0 27th 39.2 33.6 average 117%
Cooranbong (Lake Macquarie AWS) 19.3 -0.5 25.2 30th 5.2 +0.3 -0.6 27th 60.0 47.3 high 127%
Gosford AWS 18.9   25.7 30th 7.2   3.3 29th 51.2
Maitland Airport AWS 18.8   25.3 31st 6.4   1.3 27th 24.2
Mangrove Mountain AWS 17.8 +0.4 24.6 30th 6.1 -0.4 0.6 6th 82.8 61.1 high 136%
Merriwa (Roscommon) 16.5 -1.5 22.4 30th 2.2 -0.5 -4.0 26th 26.0 32.5 average 80%
Murrurundi (Haydon Street) 16.2   21.3 13th 3.3   -5.0 6th 28.6
Murrurundi Gap AWS 13.3 -1.3 19.6 31st 5.0 -0.7 0.3 6th 37.6 38.5 average 98%
Newcastle Nobbys Signal Station AWS 18.7 +0.6 25.3 31st 9.5 +0.2 5.6 6th 19.2 72.3 low 27%
Newcastle University 19.9 +0.2 26.3 31st 7.2 -0.7 3.4 27th 25.1 56.7 low 44%
Norah Head AWS 19.0 +0.1 24.2 31st 9.9 -0.6 5.9 6th 56.0 70.0 average 80%
Paterson (Tocal AWS) 18.8 -0.7 25.4 31st 6.9 +0.3 1.1 27th 23.2 37.0 average 63%
Scone Airport AWS 17.8 -1.0 23.9 31st 4.2 +0.6 -2.6 26th 27.2 34.8 average 78%
Singleton Defence AWS 18.5   24.9 31st 7.0   0.2 6th 44.8
Williamtown RAAF 18.9 +0.1 25.5 31st 6.8 -0.1 2.0 27th 38.8 72.8 average 53%
Central Tablelands (North) (district 62)
Mudgee Airport AWS 14.9 -1.4 21.1 30th 2.1 +0.6 -4.5 6th 38.2 34.4 average 111%
Nullo Mountain AWS 10.1 -0.8 15.6 30th 2.6 -0.4 -2.5 5th 77.6 53.4 high 145%
Central Tablelands (South) (district 63)
Bathurst Agricultural Station 12.6 -0.4 19.0 29th 1.5 +0.3 -4.5 6th 60.6 49.2 average 123%
Bathurst Airport AWS 12.6 -1.2 18.8 30th 1.7 +0.6 -3.4 6th 59.0 39.8 high 148%
Katoomba (Farnells Rd) 12.1 +0.9 19.0 29th 2.6 -0.7 -1.7 5th 106.9 78.6 high 136%
Lithgow (Cooerwull) 11.5 -1.0 18.4 29th 1.8 +0.5 -4.8 26th 110.6 57.6 v high 192%
Marrangaroo (Defence) 11.7   18.6 29th 1.0   -5.3 26th 117.0
Mount Boyce AWS 10.7 -0.6 18.8 29th 2.7 -0.3 -2.5 25th 113.0 55.9 high 202%
Oberon (Albion St) 10.1 -0.3 16.6 29th -0.6 -1.0 -5.1 2nd 115.8 74.4 high 156%
Orange Airport AWS 10.1 -1.2 17.3 29th 0.7 -0.1 -5.8 27th 121.0 82.3 high 147%
Springwood (Valley Heights) 17.3 -0.5 24.5 30th 7.0 -0.1 1.5 6th 64.6 52.8 high 122%
Central Western Slopes (North) (district 64)
Coonabarabran (Showgrounds) 16.0 -0.9 22.1 31st 1.9 +1.1 -4.0 6th 31.1 51.6 average 60%
Coonabarabran Airport AWS 14.6 -1.5 20.2 13th 5.7 -0.3 1.1 6th 30.4 34.4 average 88%
Dunedoo Post Office 16.5 -0.8 23.2 30th 1.6 -1.4 -3.5 6th 30.8 39.8 average 77%
Central Western Slopes (South) (district 65)
Cowra Airport AWS 14.3 -1.7 21.0 29th 3.5 +1.2 -2.6 6th 62.6 35.5 high 176%
Dubbo Airport AWS 16.2 -1.4 22.6 30th 2.9 -0.2 -3.4 6th 39.0 34.3 high 114%
Forbes Airport AWS 14.8 -1.7 21.6 30th 3.5 +0.9 -2.9 5th 50.6 33.5 high 151%
Parkes Airport AWS 14.1 -2.0 20.4 29th 2.7 +0.5 -4.2 5th 59.6 43.6 high 137%
Wellington (D&J Rural) 15.9 -1.2 22.5 30th 2.8 -0.1 -4.0 6th 41.4 48.4 average 86%
Metropolitan (East) (district 66)
Bankstown Airport AWS 19.1 +0.1 26.2 30th 6.6 +0.6 2.3 25th 69.6 49.6 high 140%
Canterbury Racecourse AWS 18.9 -0.1 25.7 30th 6.2 -0.2 1.7 25th 72.6 61.8 average 117%
Holsworthy Aerodrome AWS 18.5   25.3 30th 6.0   1.2 26th 79.4
Parramatta North (Masons Drive) 19.1 0.0 25.5 30th 6.9 -0.2 1.7 25th 66.2 55.5 high 119%
Sydney (Observatory Hill) 19.2 +1.3 25.3 30th 9.4 +0.4 6.3 5th 68.2 80.2 average 85%
Sydney Airport AMO 19.4 +1.0 26.8 30th 9.4 +1.2 6.2 25th 60.0 75.5 average 79%
Sydney Harbour (Wedding Cake West) 17.9 0.0 22.0 30th 10.8 -0.3 7.6 5th
Sydney Olympic Park AWS (Archery Centre) 19.6   26.5 30th 7.0   2.6 25th 63.4
Terrey Hills AWS 17.5 -0.3 24.3 30th 8.1 -0.2 3.0 6th 45.8 55.7 average 82%
Metropolitan (West) (district 67)
Badgerys Creek AWS 18.6 -0.6 28.6 30th 5.4 +0.7 0.5 25th 72.2 36.2 high 199%
Horsley Park Equestrian Centre AWS 18.4 -0.7 25.4 30th 5.8 -0.6 1.6 25th 68.6 38.2 high 180%
Penrith Lakes AWS 19.5 -0.4 26.6 30th 5.8 -0.3 0.7 6th 61.2 29.8 high 205%
Richmond RAAF 19.2 -0.6 26.6 30th 5.3 +0.9 -0.9 6th 45.6 31.7 high 144%
Illawarra (district 68)
Albion Park (Shellharbour Airport) 18.2 -0.6 24.5 30th 7.1 +0.6 1.2 26th 179.2 58.5 high 306%
Bellambi AWS 18.1 +0.1 24.1 30th 10.0 -0.5 6.2 26th 167.0 93.8 high 178%
Camden Airport AWS 18.7 -0.4 25.4 30th 4.5 +0.6 -1.2 27th 82.6 41.1 high 201%
Campbelltown (Mount Annan) 18.8 -0.5 25.4 30th 4.7 +0.2 -0.3 5th 90.4 41.0 high 220%
High Range AWS (Wanganderry) 11.3   18.0 30th 4.3   -0.1 5th 96.4
Holsworthy Defence AWS 18.0   25.0 30th 6.3   2.2 26th 117.0
Jervis Bay (Point Perpendicular) 16.6 -0.3 23.9 30th 10.3 +0.1 6.5 26th 208.2 75.3 v high 276%
Jervis Bay NSW (Jervis Bay Airfield AWS) 16.9   24.7 30th 8.3   3.5 29th 165.0
Kiama (Bombo Headland) 18.0 0.0 21.6 13th 10.2 -0.4 6.8 5th 100.4 68.9 high 146%
Moss Vale AWS 12.7 -0.6 19.6 29th 3.2 +0.3 -2.1 25th 160.4 52.6 high 305%
Nowra RAN Air Station AWS 17.4 -0.8 25.1 30th 7.5 +0.7 1.4 27th 355.2 80.1 v high 443%
South Coast (district 69)
Bega AWS 17.6 -0.3 27.8 30th 4.6 +1.5 -1.1 2nd 96.8 33.2 high 292%
Braidwood Racecourse AWS 12.9 -0.6 19.6 29th 1.6 +1.0 -4.7 27th 155.0 52.7 v high 294%
Green Cape AWS 15.4 -0.7 20.4 30th 9.5 +0.1 6.0 5th 42.6 34.7 average 123%
Merimbula Airport AWS 17.0 -0.3 27.4 30th 5.4 +0.7 -0.5 5th 75.6 44.6 high 170%
Montague Island Lighthouse 16.7 +0.5 23.1 30th 10.9 +0.6 7.9 28th 70.8 52.0 high 136%
Moruya Airport AWS 17.9 -0.2 25.8 30th 5.5 +1.3 -1.5 6th 131.6 56.5 high 233%
Moruya Heads Pilot Station 17.3 +0.1 25.4 30th 8.0 +1.5 2.5 6th 128.4 55.2 high 233%
Narooma (Marine Rescue) 17.5 +0.6 27.5 30th 7.4 0.0 2.6 6th 128.4 51.1 v high 251%
Nerriga AWS 12.7   18.9 29th 3.1   -2.4 6th 174.6
Ulladulla AWS 17.2 -0.1 24.5 30th 9.3 +0.1 5.6 6th 149.8 73.1 high 205%
Southern Tablelands (Goulburn-Monaro) (district 70)
Bombala (Therry Street) 12.6 -0.1 21.7 30th 0.9 +1.1 -3.5 2nd 58.6 39.9 high 147%
Bombala AWS 10.8 -1.4 19.6 30th 1.6 +1.3 -2.9 11th 40.6 27.1 high 150%
Canberra Airport 12.8 -1.4 18.6 29th 1.7 +0.9 -4.0 6th 105.8 46.4 v high 228%
Cooma Airport AWS 11.1 -0.8 19.7 29th 0.0 +1.6 -5.8 6th 69.8 31.3 high 223%
Cooma Visitors Centre 12.5 -0.8 21.0 29th -0.3 +1.6 -8.0 6th 61.4 27.7 v high 222%
Goulburn Airport AWS 12.2 -1.2 18.1 30th 1.3 +0.8 -5.0 26th 157.8 42.9 highest 368%
Goulburn TAFE 11.9 -1.3 18.4 29th 2.7 +0.5 -1.8 26th 170.0 54.4 v high 313%
Mount Ginini AWS 3.1 -0.9 9.9 29th -2.2 -0.1 -7.2 5th 200.0 92.6 v high 216%
Taralga Post Office 11.3 -0.6 18.0 30th 1.3 +0.1 -5.0 25th 144.3 67.7 v high 213%
Tuggeranong (Isabella Plains) AWS 12.8 -1.3 18.9 30th 1.5 +0.6 -4.7 6th 93.4 47.9 high 195%
Southern Tablelands (Snowy Mountains) (district 71)
Perisher Valley AWS 2.9 -0.4 11.0 2nd -3.2 +0.7 -11.3 25th 283.2 241.3 high 117%
Thredbo AWS 0.0 -0.5 7.5 2nd -4.3 +0.6 -9.3 6th 108.6 118.5 average 92%
Thredbo Village 6.1 -0.5 12.0 29th -1.9 +0.6 -7.2 6th 194.8 192.8 average 101%
Southwest Slopes (South) (district 72)
Albury Airport AWS 14.4 -0.5 20.1 30th 3.7 +0.2 -2.2 6th 84.2 65.9 average 128%
Hume Reservoir 14.1 -0.1 20.1 30th 4.1 -0.8 -0.7 6th 95.4 75.7 high 126%
Tumbarumba Post Office 12.0 -0.2 19.0 29th 1.8 +0.9 -5.5 6th 103.4 106.3 average 97%
Wagga Wagga AMO 13.8 -0.7 20.5 30th 4.0 +0.5 -3.2 6th 74.0 50.9 high 145%
Southwest Slopes (North) (district 73)
Cootamundra Airport 13.4 -1.2 20.0 30th 2.9 +1.5 -4.4 6th 99.6 54.7 v high 182%
Grenfell (Manganese Rd) 13.3 -1.5 19.9 30th 3.8 -0.1 -2.8 6th 62.4 55.1 average 113%
Temora Airport 13.9 -1.5 19.9 30th 2.9 +1.1 -4.0 6th 73.0 36.2 v high 202%
Young Airport             89.2 50.4 high 177%
Riverina (East) (district 74)
Corowa Airport     21.5 30th 3.6 0.0 -1.0 6th 78.1 53.2 high 147%
Deniliquin Airport AWS 15.3 -0.9 23.4 30th 3.3 -0.7 -3.4 6th 53.2 33.4 high 159%
Kapooka (Defence) 14.1   20.6 30th 3.4   -4.3 6th 81.8
Narrandera Airport AWS 15.5 -0.6 22.9 30th 3.7 +0.1 -3.9 6th 64.6 39.3 high 164%
Tocumwal Airport 14.9 -0.8 21.8 30th 4.3 +0.1 -0.6 6th 54.2 42.9 average 126%
Yanco Agricultural Institute 15.4 -0.9 23.1 30th 4.9 -0.4 -0.9 6th 32.2 35.3 average 91%
Riverina (West) (district 75)
Griffith Airport AWS 15.9 -0.6 24.5 30th 3.6 -0.2 -4.0 6th 38.6 34.8 average 111%
Hay Airport AWS 16.4 -1.2 24.7 30th 3.8 -0.3 -3.0 6th 50.2 23.8 high 211%
Hillston Airport 16.5 -0.6 25.5 30th 3.6 -1.3 -3.2 6th 40.2 30.8 average 131%
Lake Cargelligo Airport 16.0 -1.6 25.8 30th 4.3 -0.3 -2.0 6th 36.4 33.2 average 110%
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 Monthly 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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