South Australia in autumn 2020: Average rainfall, cooler days in the east

Autumn 2020 was the coolest for South Australia as a whole since 2015. Daytime temperatures tended to be below average for the central and eastern districts but above average in the far Northwest of the State. Rainfall was above average for parts of the east, including the Riverland and far Northeast districts, but below average across central and Northwest Pastoral areas.

Rainfall above average in parts of the east

  • Autumn rainfall was near average in most Agricultural areas but above average across some eastern Agricultural districts and the far Northeast of the State
  • Heavy rainfall from ex-tropical cyclone Esther in the North East Pastoral district resulted in the wettest March since at least 2012 in the northeastern areas of the State
  • It was the wettest autumn since 2016 for the State as whole, although 18.5% below the long-term average
  • Some sites had their highest total autumn rainfall for at least 20 years
  • Much of the central and Northwest Pastoral areas received around 40-60% of their average autumn rainfall

Cooler days in the east

Further information

Media
(03) 9669 4057

Extremes in autumn 2020
Hottest day 40.9 °C at Moomba Airport on 1 Mar
Warmest days on average 28.6 °C at Oodnadatta Airport
Coolest days on average 16.0 °C at Mount Lofty
Coldest day 8.2 °C at Mount Lofty on 24 May
Coldest night -3.3 °C at Gluepot Reserve (Gluepot) on 16 May
Coolest nights on average 8.2 °C at Coonawarra and at Keith (Munkora)
Warmest nights on average 15.0 °C at Moomba Airport
Warmest night 26.8 °C at Oodnadatta Airport on 12 Mar
Warmest on average overall 21.6 °C at Oodnadatta Airport
Coolest on average overall 12.4 °C at Mount Lofty
Wettest overall 313.1 mm at Piccadilly (Woodhouse)
Wettest day 65.5 mm at Innamincka Station on 4 Mar
Strongest wind gust 107 km/h at Neptune Island on 31 May

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


Highest autumn total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
autumn
Tailem Bend 144.3 158.2 in 1985 88.8
Yorketown 131.8 183.6 in 1992 95.8
Warooka 155.3 220.6 in 1992* 103.4
Cooke Plains 120.6 126.8 in 1992* 87.8
Stansbury 121.0 159.8 in 1992* 92.2

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




Record lowest autumn mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Renmark Aero 23.0 = 23.0 in 2011 24 24.6

Lowest autumn mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
autumn
Loxton Research Centre 22.6 21.6 in 1995 24.0
Moomba Airport 27.6 27.5 in 1996 29.2



Record lowest autumn mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Edithburgh 12.0 12.4 in 2008 27 13.2




Record lowest autumn mean temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Gluepot Reserve (Gluepot) 16.1 = 16.1 in 2015 20 17.1

Lowest autumn mean temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
autumn
Clare High School 14.3 13.5 in 1995 15.5



Summary statistics for autumn 2020
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
autumn
2020
Diff
from
average
Highest for
autumn
2020
Mean for
autumn
2020
Diff
from
average
Lowest for
autumn
2020
Total for
autumn
2020
Average
for
autumn
Rank of
autumn
2020
Fraction of
autumn
average
Northwest (district 16)
Andamooka 26.5 -0.9 38.0 19 Mar 13.5 -0.7 4.2 16 May 15.7 45.0 low 35%
Coober Pedy Airport 26.4 -0.7 38.6 18 Mar 13.7 -0.6 2.9 23 May 57.4 34.7 high 165%
Ernabella (Pukatja) 27.6 +0.8 37.9 13 Mar 13.9 +0.8 0.0 23 May 16.0 54.9 low 29%
Mount Ive 24.2   38.0 19 Mar     3.5 17 May 43.9 53.4 average 82%
Roxby Downs (Olympic Dam Aerodrome) 26.2 -1.1 37.8 19 Mar 11.6 -1.2 -0.3 25 May 16.2 32.0 low 51%
Tarcoola Aero 26.2 -1.0 40.3 19 Mar 11.9 -0.3 0.6 17 May 46.0 40.7 average 113%
Woomera Aerodrome 25.1 -0.5 38.1 19 Mar 12.6 -0.6 3.3 25 May 18.8 42.4 average 44%
Far North (district 17)
Leigh Creek Airport 25.5 -0.9 36.9 1 Mar 12.2 -0.9 2.2 15 May 9.6 48.7 low 20%
Marree Aero 27.6 -1.1 39.3 1 Mar 12.9 -1.2 1.8 25 May 14.0 25.8 average 54%
Moomba Airport 27.6 -1.6 40.9 1 Mar 15.0 -0.7 3.1 26 May 80.4 42.0 high 191%
Oodnadatta Airport 28.6 0.0 40.2 13 Mar 14.5 0.0 2.7 25 May 57.0 37.4 high 152%
Western Agricultural (district 18)
Ceduna AMO 23.7 -0.3 40.6 18 Mar 11.5 +0.6 2.6 17 May 64.0 68.2 average 94%
Cleve 21.8 -0.8 37.4 18 Mar 12.1 -0.3 5.7 15 May 83.8 90.9 average 92%
Cleve Aerodrome 21.8 -1.1 37.4 18 Mar 12.1 -0.4 4.6 15 May 67.0 83.7 average 80%
Coffin Bay (Point Avoid) 20.5   32.5 17 Mar 12.7   6.4 15 May 127.6
Cultana (Defence) 23.8   37.6 19 Mar 12.0   5.4 20 May 48.2
Cummins Aero 22.5 -1.2 36.5 17 Mar 9.8 -1.2 1.2 17 May 100.4 91.6 average 110%
Elliston 22.3 +0.2 37.0 17 Mar 12.1 -0.2 4.1 25 May 97.8 94.4 average 104%
Kyancutta 24.7 -0.8 39.3 18 Mar 9.7 -0.1 0.3 15 May 59.9 65.2 average 92%
Minnipa PIRSA 23.2 -1.6 37.8 18 Mar 11.8 -0.3 4.6 25 May 73.2 63.1 average 116%
North Shields (Port Lincoln AWS) 21.6 -0.5 35.9 17 Mar 11.9 -0.6 3.8 17 May 135.0 82.6 v high 163%
Nullarbor 24.3 0.0 40.2 17 Mar 11.6 0.0 2.3 29 May 65.0 73.2 average 89%
Port Augusta Aero 24.8 -1.6 38.7 19 Mar 11.9 -0.9 1.8 25 May 40.8 51.3 average 80%
Whyalla Aero 23.3 -0.7 37.3 19 Mar 11.4 -0.8 0.6 16 May
Wudinna Aero 24.1 -1.3 38.9 18 Mar 10.5 -0.2 0.1 17 May 60.6 56.9 average 107%
Upper North (district 19)
Hawker 24.1 -1.1 35.0 19 Mar 11.1 0.0 2.2 29 May 34.8 66.5 average 52%
Yongala 20.8 -1.3 33.5 19 Mar     -1.0 15 May 77.8 76.4 average 102%
Northeast (district 20)
Gluepot Reserve (Gluepot) 23.7 -1.4 38.5 19 Mar 8.5 -0.6 -3.3 16 May 62.2 52.4 average 119%
Yunta Airstrip 23.0 -1.4 36.8 19 Mar 9.2 -0.1 -2.2 16 May 23.8 32.6 average 73%
Lower North (district 21)
Clare High School 20.2 -1.5 34.4 18 Mar 8.4 -0.9 -0.8 16 May 116.6 116.7 average 100%
Port Pirie Aerodrome AWS 23.9   37.0 18 Mar 11.2   2.3 15 May 114.2
Snowtown (Rayville Park) 23.1 -1.4 36.8 18 Mar 9.2 -0.5 -0.2 16 May 78.8 79.5 average 99%
Yorke Peninsula (district 22A)
Edithburgh 20.7 -0.4 33.4 17 Mar 12.0 -1.2 3.8 16 May 120.6 87.5 high 138%
Minlaton Aero 21.7 -1.5 34.3 18 Mar 11.2 -0.8 3.7 21 May 124.6 83.3 v high 150%
Warooka 20.9 -1.0 31.5 11 Mar 12.1 -0.5 6.5 20 May 155.3 103.4 high 150%
Kangaroo Island (district 22B)
Cape Borda 18.7 -1.1 28.6 18 Mar 12.5 0.0 6.8 14 May 123.0 132.5 average 93%
Cape Willoughby 18.6 -0.4 28.5 12 Mar 13.7 -0.5 8.6 20 May 150.7 122.1 high 123%
Kingscote Aero 20.8 -0.8 35.2 18 Mar 9.5 +0.1 0.8 16 May 106.6 99.5 average 107%
Parndana CFS AWS 19.4   34.4 18 Mar 10.5   4.5 14 May 136.6
Adelaide Plains (district 23A)
Adelaide (Kent Town) 21.8 -1.0 35.0 18 Mar 12.2 -0.5 3.5 16 May 152.2 126.8 high 120%
Adelaide (West Terrace / ngayirdapira) 21.5 -0.8 34.1 18 Mar 12.5 -0.3 4.3 16 May 144.2 135.9 average 106%
Adelaide Airport 21.1 -1.0 34.4 18 Mar 12.3 +0.3 3.2 16 May 125.4 109.4 average 115%
Edinburgh RAAF 21.9 -1.2 34.9 18 Mar 11.8 -0.1 3.0 16 May 137.8 100.1 high 138%
Parafield Airport 22.4 -0.5 35.0 18 Mar 11.0 -0.9 1.4 16 May 134.0 108.6 high 123%
Roseworthy AWS 22.7 -1.4 36.9 18 Mar 10.4 -0.3 3.9 15 May 95.4 87.4 average 109%
County Light (district 23B)
Nuriootpa PIRSA 20.7 -1.1 35.3 18 Mar 8.7 -0.7 -0.5 16 May 136.8 111.9 high 122%
Mount Lofty Ranges (district 23C)
Hindmarsh Island AWS 20.5 -1.0 33.2 17 Mar 11.8 -0.7 4.8 17 May 158.0 88.4 high 179%
Kuitpo Forest Reserve 18.3 -1.5 32.5 18 Mar 10.3 -0.9 5.5 25 May 217.2 177.3 high 123%
Mount Barker 20.0 -0.6 32.4 11 Mar 8.9 +0.3 1.0 15 May 193.4 176.4 average 110%
Mount Crawford AWS 18.1 -1.2 31.3 11 Mar 9.7 -0.8 4.2 25 May 175.8 141.8 high 124%
Mount Lofty 16.0 0.0 28.7 18 Mar 8.8 -0.9 2.8 25 May 246.6 233.4 average 106%
Noarlunga 20.8 -1.4 34.3 18 Mar 12.9 -0.8 6.8 26 May 151.2 107.8 v high 140%
Parawa (Second Valley Forest AWS) 17.0 -1.2 29.9 18 Mar 10.7 -0.6 5.6 16 May 226.6 190.4 high 119%
Victor Harbor (Encounter Bay) 20.4 -0.9 33.1 17 Mar 9.9 -0.9 1.0 16 May 205.6 118.1 v high 174%
Upper Murray Valley (district 24A)
Loxton Research Centre 22.6 -1.4 38.2 19 Mar 9.4 +0.3 -1.1 16 May 77.4 52.9 high 146%
Renmark Aero 23.0 -1.6 39.2 19 Mar 10.0 +0.4 -1.2 15 May 71.6 46.1 high 155%
Lower Murray Valley (district 24B)
Eudunda 20.5 -0.9 35.0 18 Mar 9.6 -0.4 3.6 16 May 99.0 99.1 average 100%
Meningie 20.8 -0.7 34.4 11 Mar 10.6 -0.2 2.0 15 May 156.8 114.4 high 137%
Murray Bridge (Pallamana Aerodrome) 22.2 -1.3 35.7 11 Mar 9.2 -0.6 1.3 16 May 96.4 77.5 average 124%
Strathalbyn Racecourse 21.0 -1.1 34.5 11 Mar 10.4 -0.5 2.9 26 May 106.0 90.2 average 118%
Murray Mallee (district 25A)
Karoonda 22.2 -1.4 36.6 19 Mar     2.4 15 May
Upper Southeast (district 25B)
Keith 21.9 -0.7 35.4 18 Mar 9.1 -0.5 2.0 17 May 121.0 105.7 average 114%
Keith (Munkora) 21.9 -1.4 36.7 18 Mar 8.2 -0.4 0.1 26 Mar 113.2 84.5 high 134%
Lameroo (Austin Plains) 22.0 -1.4 36.8 19 Mar 9.0 -0.5 2.2 16 May 99.4 72.8 average 137%
Lower Southeast (district 26)
Cape Jaffa (The Limestone) 19.0 -0.9 30.0 28 Mar 10.7 -0.2 3.8 25 May 88.2 109.8 low 80%
Coonawarra 20.1 -1.0 34.5 12 Mar 8.2 -0.1 -1.4 17 May 141.8 119.7 average 118%
Mount Gambier Aero 19.3 -0.3 33.7 11 Mar 9.0 +0.1 0.9 17 May 166.6 162.7 average 102%
Naracoorte Aerodrome 20.7 -1.3 34.5 11 Mar 8.7 +0.2 0.4 14 May 111.4 94.3 high 118%
Padthaway South 20.8 -1.2 34.0 12 Mar 8.3 -0.3 -0.4 17 May 124.0 96.5 high 128%

Notes

The Seasonal 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 10 am on Monday 1 June 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

Media
(03) 9669 4057