South Australia in July 2021: warm in the north, wet in the south

Rainfall in July was above to very much above average in the state's central and eastern agricultural districts, but below average in parts of the north. For South Australia as a whole, it was the wettest July since 2016. Daytime temperatures were very much above average throughout the state's north, but closer to average in the south. Night-time temperatures were very much above average in the western half of the state, but close to average in the east. The mean temperature for South Australia as a whole was the second-highest in July on record and highest since 1975.

Wettest overall since 2016

  • For South Australia as a whole, it was the wettest July since 2016.
  • Rainfall in July was above to very much above average in the state's central and eastern agricultural districts.
  • Rainfall totals were generally average to below average though across South Australia's north and west.
  • Averaged across the state, the monthly mean rainfall was 5% below average.
  • On the 14th and 20th, low pressure troughs and cold fronts brought heavy rain that resulted in some sites having their highest July daily rainfall on record.
  • Many sites had their highest total July rainfall on record or their highest total July rainfall for at least 20 years.
  • On the 24th, small hail fell across the Adelaide Hills, particularly around Hahndorf where hail covered the ground, turning the scene white.
  • The average wind speed for July was above average at most sites across South Australia, with total monthly wind run in July the highest for at least 10 years at many locations.

Second-warmest July on record

  • The mean temperature for South Australia as a whole was 1.68 °C above average, making it the state's second-warmest July on record and highest since 1975.
  • Daytime temperatures were very much above average throughout the state's north, with mean maximum temperatures more than 2 °C above average across most of the Pastoral districts.
  • Mean maximum temperatures where closer to average in the south, including areas slightly below average in the Lower South East.
  • The mean maximum temperature was 1.97 °C above average, the seventh-highest on record for July and highest since 2019.
  • Late in the month, several sites had their highest July temperature on record.
  • On the 22nd, daytime temperatures were more than 6 °C below average in parts of the east and numerous sites had their coldest July day on record.
  • Mean night-time temperatures for July were very much above average in the western half of the state, but close to average in the east.
  • The state's mean minimum temperature was 1.39 °C above average, the sixth-highest on record for July and highest since 2009.
  • On the 28th, Karoonda had its warmest July night on record.
  • A few sites in the north had their highest July mean temperature on record or their highest July mean temperature since 1975.

Further information

Media
(03) 9669 4057

Extremes in July 2021
Hottest day 31.9 °C at Moomba Airport on the 31st
Warmest days on average 22.3 °C at Oodnadatta Airport
Coolest days on average 9.3 °C at Mount Lofty
Coldest day 5.2 °C at Mount Lofty on the 22nd
Coldest night -4.4 °C at Renmark Aero on the 9th
Coolest nights on average 2.8 °C at Yongala
Warmest nights on average 11.2 °C at Neptune Island
Warmest night 16.6 °C at Oodnadatta Airport on the 28th
Warmest on average overall 14.9 °C at Oodnadatta Airport
Coolest on average overall 7.0 °C at Mount Lofty
Wettest overall 268.0 mm at Lenswood
Wettest day 48.0 mm at Piccadilly (Woodhouse) on the 17th
Strongest wind gust 135 km/h at Neptune Island on the 24th

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 July daily rainfall
New record
(mm)
Old
record
Years of
record
Neptune Island 47.0 on the 20th 43.8 on the 2nd in 2011 55
Coober Pedy Airport 12.0 on the 14th 7.2 on the 14th in 2006 28



Record highest July total rainfall
New record
(mm)
Old
record
Years of
record
Average for
July
Truro 141.5 135.1 in 1917 142 59.8
North Shields (Port Lincoln AWS) 117.2 107.8 in 1995 28 56.8
Nangwarry Forestry SA Depot 175.9 146.0 in 2009 27 98.9
Nuriootpa PIRSA 125.0 95.6 in 2017 25 58.4
Stenhouse Bay 124.6 120.0 in 2013 25 71.1
Roseworthy AWS 87.4 82.8 in 2016 24 44.4
Cleve (Heggaton) 76.4 72.2 in 2013 22 40.6
Minburra 43.0 36.2 in 2013 22 16.8
Padthaway South 119.2 115.6 in 2009 22 66.2
Barossa Valley (Duckponds Creek) 112.2 101.6 in 2016 21 60.6
Greenock Alert 129.8 91.0 in 2017 21 60.3
Ironstone Road 216.0 206.2 in 2009 21 112.7
Keith (Munkora) 94.6 85.6 in 2016 21 56.4
Lenswood (Stringybark) 200.2 184.4 in 2014 21 120.4
Port Augusta Aero 41.0 31.0 in 2013 21 17.0
Ashton 243.6 242.0 in 2014 20 162.9
Bordertown (Industrial Estate) 93.4 90.4 in 2013 20 62.2

Highest July total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
July
Kapunda 112.5 127.3 in 1890 59.6
Robertstown 83.4 100.8 in 1917* 36.1
Farrell Flat 116.2 121.3 in 1964 58.2
Bruce 65.6 75.6 in 1974 24.9
Kingscote 124.8 164.3 in 1964* 77.4
Neptune Island 143.2 146.4 in 1984* 76.7
Morchard (The Rocks) 89.4 101.0 in 1986 41.6
Wilmington 107.4 143.0 in 1986 53.0
Quorn 100.4 114.6 in 1986* 36.4
Brinkworth 90.0 119.0 in 1986* 47.5
Coulta 139.2 153.7 in 1989 89.0
Eudunda 95.0 96.8 in 1990 51.1
Koolunga 92.8 105.6 in 1990 45.6
Port Wakefield 62.4 86.8 in 1990 35.5
Australia Plains 61.6 66.6 in 1989* 30.6
Huddleston (Willow Ponds) 96.2 98.4 in 1993 53.0
Appila 71.4 74.6 in 1995 40.7
Balaklava 67.0 67.9 in 1995 41.7
Edinburgh RAAF 94.4 109.4 in 1995 53.3
Georgetown 121.0 128.6 in 1993* 57.0
Gulnare 102.0 102.8 in 1993* 57.8
Jamestown 101.8 121.0 in 1995 56.3
Lenswood 268.0 356.6 in 1995 162.2
Mintaro 132.8 136.4 in 1995 77.0
Point Pass 105.4 110.6 in 1995 54.5
Tanunda 129.0 161.8 in 1995 69.0
Williamstown 167.2 214.8 in 1995 93.9
Williamstown (South Para Reservoir) 154.4 216.4 in 1995 97.3
Yongala 72.8 76.0 in 1995 38.9
Alawoona 46.2 56.6 in 1996 30.0
Berri 38.0 51.6 in 1995* 25.0
Blanchetown Lock 1 34.6 53.1 in 1996 27.1
Booborowie 83.4 101.4 in 1995* 54.4
Booleroo Centre (Willowie) 65.0 78.4 in 1996 32.3
Bower 42.6 43.2 in 1996 22.7
Brinkworth (Bungaree) 111.8 118.5 in 1996 72.7
Burra Community School 86.4 90.2 in 1995* 52.5
Caliph 36.3 57.0 in 1996 28.4
Cummins 106.4 116.2 in 1995* 70.6
Jamestown PIRSA 91.8 111.2 in 1995* 55.7
Loxton Research Centre 36.0 37.0 in 1996 26.3
Mount Hope (Fairview) 119.6 121.6 in 1996 73.8
Orroroo 67.8 70.8 in 1996 35.4
Pinnaroo 63.3 71.4 in 1995* 35.9
Port Germein 50.2 55.8 in 1996 30.9
Price 65.6 67.2 in 1995* 37.8
Purnong (Claypans) 53.2 61.2 in 1996 31.1
Redhill 90.8 92.8 in 1996 51.1
Sedan (Sandleton) 41.6 46.0 in 1996 25.7
Wirrabara 93.2 =93.2 in 1996 58.0
Yacka 74.0 78.2 in 1996 48.3
Coffin Bay 141.0 152.8 in 1989* 74.5
Crystal Brook 73.8 80.6 in 1996* 44.3
Parndana (Turkey Lane) 198.0 238.8 in 1995* 132.5
Peake 56.6 86.8 in 1996* 43.0
Port Clinton (Yararoo) 75.5 88.0 in 1996* 46.2
Cudlee Creek (Millbrook Reservoir) 200.6 202.0 in 1996* 123.5
Manoora 90.6 100.6 in 1995* 57.7
Port Parham 64.0 76.2 in 1995* 40.0
Yeelanna 108.6 110.8 in 1996* 66.9

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




Record highest July temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Leigh Creek Airport 26.7 on the 31st 26.3 on the 27th in 2017 38 16.9
Moomba Airport 31.9 on the 31st 30.9 on the 13th in 2013 27 19.8
Marree Aero 29.8 on the 31st 29.1 on the 29th in 2017 24 19.4
Tarcoola Aero 30.0 on the 27th 29.4 on the 27th in 2017 24 19.0



Record lowest July daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Adelaide Airport 9.4 on the 22nd 9.8 on the 28th in 1998 67 15.0
Parafield Airport 8.9 on the 22nd 9.6 on the 28th in 1998 65 15.2
Edinburgh RAAF 8.8 on the 22nd 9.4 on the 28th in 1998 49 15.3
Loxton Research Centre 8.2 on the 22nd 8.5 on the 2nd in 1984 38 16.0
Cape Jaffa (The Limestone) 9.5 on the 22nd 9.8 on the 8th in 2004 30 14.0
Mount Crawford AWS 5.3 on the 22nd 5.5 on the 12th in 2016 28 11.1
Renmark Aero 8.2 on the 22nd 9.0 on the 12th in 2005 26 16.5
Strathalbyn Racecourse 8.5 on the 22nd 9.2 on the 14th in 2006 26 15.1
Nuriootpa PIRSA 6.7 on the 22nd 7.0 on the 28th in 1998 25 13.6
Roseworthy AWS 9.0 on the 22nd = 9.0 on the 28th in 1998 24 15.5
Gluepot Reserve (Gluepot) 7.5 on the 22nd 9.8 on the 14th in 2006 23 17.1
Noarlunga 9.4 on the 22nd 9.5 on the 12th in 2005 21 14.9



Record highest July daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Karoonda 12.7 on the 28th 12.5 on the 14th in 2013 20 4.8



Record highest July mean temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Marree Aero 13.6 13.5 in 2019 23 12.2
Roxby Downs (Olympic Dam Aerodrome) 12.8 = 12.8 in 2019 23 11.4

Highest July mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
July
Oodnadatta Airport 14.9 15.6 in 1975* 12.8

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




Summary statistics for July 2021
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
July
2021
Diff
from
average
Highest for
July
2021
Mean for
July
2021
Diff
from
average
Lowest for
July
2021
Total for
July
2021
Average
for
July
Rank of
July
2021
Fraction of
July
average
Northwest (district 16)
Andamooka 19.7 +1.1 28.5 27th 6.6 +0.7 1.0 7th 11.6 11.2 average 104%
Coober Pedy Airport 19.6 +0.9 30.1 27th 7.4 +1.1 1.2 3rd 13.2 4.8 high 275%
Ernabella (Pukatja) 20.7 +2.1 27.5 13th 6.1 +1.6 -2.2 6th 2.8 12.0 average 23%
Mount Ive 17.0   25.5 27th       19.5 22.4 average 87%
Roxby Downs (Olympic Dam Aerodrome) 19.5 +0.8 28.6 27th 6.1 +1.9 -0.3 3rd 9.8 6.1 high 161%
Tarcoola Aero 19.4 +0.4 30.0 27th 6.4 +1.8 0.1 3rd 8.4 10.7 average 79%
Woomera Aerodrome 18.4 +1.3 27.9 27th 6.3 +0.5 1.4 3rd 11.6 14.0 average 83%
Far North (district 17)
Leigh Creek Airport 17.8 +0.9 26.7 31st 5.0 +0.3 -0.6 3rd 14.8 14.7 average 101%
Marree Aero 21.1 +1.7 29.8 31st 6.0 +1.1 1.8 3rd 2.4 4.2 average 57%
Moomba Airport 21.3 +1.5 31.9 31st 6.2 -0.1 0.7 4th 0.4 11.9 average 3%
Oodnadatta Airport 22.3 +2.5 31.7 27th 7.4 +1.6 0.4 4th 1.0 9.0 average 11%
Western Agricultural (district 18)
Ceduna AMO 17.8 +0.3 25.5 27th 7.2 +1.4 2.4 19th 34.0 38.5 average 88%
Cleve 15.8 +0.5 21.3 30th 7.8 +0.6 2.0 22nd 57.6 45.8 high 126%
Cleve Aerodrome 15.7 +0.1 21.3 30th 8.1 +0.6 4.8 21st 50.2 42.2 average 119%
Coffin Bay (Point Avoid) 15.5   18.4 30th 9.2   5.3 21st 106.6
Cultana (Defence) 17.6   25.3 31st 6.6   2.6 3rd 18.4
Cummins Aero 15.6 0.0 20.7 30th 6.1 +0.7 2.1 21st 100.4 65.1 high 154%
Elliston 16.8 +0.3 19.8 30th 8.4 +0.5 4.9 1st 114.4 70.6 v high 162%
Kimba 15.8 +0.3 22.0 30th 5.8 +0.8 1.5 29th
Kyancutta 17.7 +0.5 24.5 30th 6.1 +1.3 1.8 19th 43.6 39.7 average 110%
Minnipa PIRSA 16.0 -0.3 22.4 27th 7.3 +0.7 4.1 4th 53.4 35.0 high 153%
Neptune Island 15.3 0.0 19.2 30th 11.2 -0.1 7.3 17th 143.2 76.7 v high 187%
North Shields (Port Lincoln AWS) 16.1 0.0 21.0 30th 7.8 +0.4 4.8 21st 117.2 56.8 highest 206%
Nullarbor 19.3 +0.9 25.1 30th 6.6 +1.4 2.3 12th 15.4 26.6 average 58%
Port Augusta Aero 18.4 +0.4 26.0 31st 4.9 +0.3 0.2 3rd 41.0 17.0 highest 241%
Streaky Bay 16.4 -0.1 20.8 30th 9.0 +0.5 5.7 21st 70.5 60.8 high 116%
Whyalla Aero 18.3 +1.3 25.4 31st 5.8 +0.6 1.7 8th 32.4 22.1 high 147%
Wudinna Aero 17.0 0.0 23.6 27th 7.4 +1.3 2.9 21st 44.6 33.9 high 132%
Upper North (district 19)
Hawker 15.8 -0.2 23.5 31st 4.6 +0.9 -1.8 3rd 46.1 32.9 high 140%
Yongala 13.0 +0.1 20.7 31st 2.8 +0.6 -1.7 7th 72.8 38.9 v high 187%
Northeast (district 20)
Gluepot Reserve (Gluepot) 17.2 +0.1 24.0 27th 4.0 +0.4 -3.5 9th 35.2 19.6 high 180%
Yunta Airstrip 15.8 +0.1 23.5 31st 4.2 +1.2 -2.0 21st 23.8 14.3 high 166%
Lower North (district 21)
Clare High School 12.9 -0.1 18.6 30th 3.9 -0.2 -1.6 21st 92.0 65.5 high 140%
Port Pirie Aerodrome AWS 16.9   22.3 30th 6.4   0.1 21st 36.2
Snowtown (Rayville Park) 15.3 -0.1 20.7 30th 5.4 +0.9 0.2 21st 61.0 39.3 v high 155%
Yorke Peninsula (district 22A)
Edithburgh 15.4 +0.3 20.2 30th 7.3 -0.1 3.7 5th 85.6 48.2 v high 178%
Kadina AWS 15.3 -0.3 19.6 30th 6.5 +1.3 1.1 21st 53.8 31.3 high 172%
Minlaton Aero 15.2 -0.2 19.6 30th 7.2 +0.2 1.5 21st 51.3
Stenhouse Bay 15.7 +0.2 19.6 30th 8.9 -0.2 6.8 6th 124.6 71.1 highest 175%
Warooka 14.9 -0.1 17.5 30th 7.8 +0.2 3.6 21st 99.8 65.3 high 153%
Kangaroo Island (district 22B)
Cape Borda 14.0 -0.3 17.0 30th 9.4 +0.2 4.7 17th 151.6 91.5 v high 166%
Cape Willoughby 14.4 +0.2 17.0 30th 9.8 0.0 6.2 25th 119.4 81.4 high 147%
Kingscote Aero 15.0 -0.4 18.5 30th 7.0 +1.0 1.7 10th 112.4 67.3 high 167%
Parndana CFS AWS 13.4   16.9 30th 7.3   4.0 21st 143.6 96.4 high 149%
Adelaide Plains (district 23A)
Adelaide (West Terrace / ngayirdapira) 15.2 +0.2 19.8 30th 8.3 +0.8 4.2 21st 106* 65.9 161%*
Adelaide Airport 15.2 +0.2 20.5 30th 8.1 +1.0 3.1 21st 83.8 59.3 high 141%
Edinburgh RAAF 15.3 0.0 20.2 27th 6.8 +0.7 1.9 21st 94.4 53.3 v high 177%
Parafield Airport 15.6 +0.4 20.5 27th 7.0 +0.7 0.6 21st 94.8 58.9 high 161%
Roseworthy AWS 15.5 0.0 20.2 27th 6.4 +0.7 1.2 21st 87.4 44.4 highest 197%
County Light (district 23B)
Nuriootpa PIRSA 13.5 -0.1 20.5 27th 5.0 +0.4 -0.5 9th 125.0 58.4 highest 214%
Mount Lofty Ranges (district 23C)
Hindmarsh Island AWS 15.5 +0.1 21.4 30th 8.1 0.0 2.7 9th 82.0 51.3 high 160%
Kuitpo Forest Reserve 12.2 -0.2 17.2 27th 6.5 -0.2 3.4 5th 144.0 110.2 high 131%
Mount Barker 13.8 +0.9 18.4 30th 6.0 +1.4 0.4 5th 157.3 107.3 high 147%
Mount Crawford AWS 10.9 -0.2 16.9 27th 5.5 -0.4 2.1 22nd 163.0 96.8 v high 168%
Mount Lofty 9.3 +0.4 13.5 30th 4.8 -0.2 1.2 22nd 190^ 152.9 124%^
Noarlunga 14.7 -0.2 18.4 30th 8.8 +0.1 4.1 21st 96.6 63.3 high 153%
Parawa (Second Valley Forest AWS) 11.5 -0.2 14.7 30th 6.9 -0.1 4.0 23rd 181.6 126.6 high 143%
Upper Murray Valley (district 24A)
Loxton Research Centre 16.4 +0.4 24.0 31st 4.2 +0.3 -3.4 9th 36.0 26.3 high 137%
Renmark Aero 16.7 +0.2 25.2 31st 4.4 +0.6 -4.4 9th 31.0 18.3 high 169%
Lower Murray Valley (district 24B)
Eudunda 13.1 -0.1 19.5 27th 4.9 -0.2 2.0 5th 95.0 51.1 v high 186%
Meningie 15.3 +0.3 18.8 30th 7.0 +0.2 1.4 9th 97.3 62.0 v high 157%
Murray Bridge 16.6 +0.3 21.6 27th 6.0 +0.6 0.5 21st 58.9 35.9 high 164%
Murray Bridge (Pallamana Aerodrome) 15.7 0.0 21.8 27th 5.5 +0.8 -0.9 9th 48.2 35.2 high 137%
Strathalbyn Racecourse 15.2 +0.1 21.2 30th 7.0 +0.4 0.6 9th 89.2 55.9 high 160%
Upper Southeast (district 25B)
Keith 14.9 -0.1 20.0 27th 6.0 +0.4 0.0 10th 98.2 55.8 v high 176%
Keith (Munkora) 14.7 -0.2 19.7 27th 5.4 +0.3 -1.4 10th 94.6 56.4 highest 168%
Lameroo (Austin Plains) 14.6 -0.1 20.6 27th 4.7 +0.3 -1.2 9th 49.4 32.1 high 154%
Lower Southeast (district 26)
Cape Jaffa (The Limestone) 13.9 -0.1 15.8 27th 7.9 +0.3 1.1 9th 130.0 83.1 high 156%
Coonawarra 13.6 -0.3 17.3 27th 6.1 +0.9 -1.9 10th 116.4 80.2 high 145%
Mount Gambier Aero 13.3 +0.1 15.9 27th 6.1 +0.9 -0.8 10th 154.0 100.9 v high 153%
Naracoorte Aerodrome 13.7 -0.4 17.9 27th 6.3 +1.0 -0.2 10th 105.8 62.6 v high 169%
Padthaway South 13.9 -0.5 18.2 27th 6.2 +0.6 -1.9 10th 119.2 66.2 highest 180%
Robe 13.2 -0.4 15.5 27th 8.5 +0.4 3.1 10th 154.8 104.6 v high 148%
Robe Airfield 14.2 -0.4 16.5 27th 7.6 +0.9 0.3 10th 156.2 99.5 v high 157%

* note: This includes an estimated rainfall total of 14 mm for the 22nd and 23rd at Adelaide (West Terrace / ngayirdapira).

^ note: This includes an estimated rainfall total of 44 mm for the 25th to 27th at Mount Lofty.


Notes

The Monthly climate summary, generally published on the first working day of each month, lists the main features of the weather in South Australia 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 9 am on Monday 2 August 2021. 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

Media
(03) 9669 4057

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