Monday, 1 May 2023 - Monthly Climate Summary for South Australia - Product code IDCKGC13R0

South Australia in April 2023

Rainfall

  • Rainfall totals in April were very much above average across much of the western half of the state, up to 400% of average (based on 1961–1990) around Tarcoola and Coober Pedy.
  • Rainfall totals in April were above average in most other areas of the state, apart from a drier than average region extending from east of Adelaide towards the north-east to the New South Wales border.
  • Rainfall for South Australia as a whole was 102% above average, the highest in April since 2014.
  • On the 15th, a few sites in the Pastoral districts had their highest April daily rainfall on record.
  • Multiple sites across the state had their highest total April rainfall on record or their highest total April rainfall for at least 20 years.

Temperature

  • Mean maximum temperatures for April were close to average across most of South Australia.
  • The mean maximum temperature for South Australia as a whole was 0.01 °C below average (based on 1961–1990), the state's lowest in April since 2015.
  • Hawker had its lowest April mean daily maximum temperature since 1983.
  • Mean minimum temperatures were warmer than average in the state's west and generally close to average in the east.
  • The mean minimum temperature for South Australia as a whole was 0.29 °C above average (based on 1961–1990).
  • Kimba had its lowest April mean daily minimum temperature since 1995.
  • The overall mean temperature for April was 0.14 °C above average (based on 1961–1990), making it the state's overall coolest April since 2017.

Extremes Maps Records Summaries Important notes the top

Extremes in April 2023
Hottest day 38.8 °C at Oodnadatta Airport on the 11th
Warmest days on average 28.6 °C at Moomba Airport and Oodnadatta Airport
Coolest days on average 16.6 °C at Mount Lofty
Coldest day 11.6 °C at Mount Lofty on the 29th
Coldest night 1.1 °C at Keith (Munkora) on the 2nd
Coolest nights on average 7.8 °C at Yunta Airstrip
Warmest nights on average 15.2 °C at Moomba Airport and Oodnadatta Airport
Warmest night 23.5 °C at Oodnadatta Airport on the 5th
Warmest on average overall 22.0 °C at Moomba Airport
Coolest on average overall 13.2 °C at Mount Lofty
Wettest overall 113.4 mm at Nangwarry Forestry SA Depot
Wettest day 55.0 mm at Lake Everard on the 15th
Strongest wind gust 93 km/h at Cape Willoughby on the 14th

Extremes Maps Records Summaries Important notes the top

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

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Record highest April daily rainfall
New record
(mm)		 Old
record		 Years of
record
Lake Everard 55.0 on the 15th 36.4 on the 12th in 1998 87
Todmorden 49.8 on the 15th 48.0 on the 8th in 1974 73
Tarcoola (Mobella) 50.0 on the 15th 28.0 on the 24th in 2009 66
Tarcoola Aero 42.4 on the 15th 28.8 on the 22nd in 2017 26


Record highest April total rainfall
New record
(mm)		 Old
record		 Years of
record		 Average for
April
Lake Everard 71.8 53.8 in 1961 87 13.5
Tarcoola (Mobella) 55.2 50.4 in 1974 66 10.7
Nangwarry Forestry SA Depot 113.4 85.2 in 1995 29 46.4
Robe Airfield 86.8 66.4 in 2017 20 40.5

Highest April total rainfall for at least 20 years
Observed
(mm)		 Most recent
higher		 Average for
April
Lucindale (Greenvale) 67.8 71.6 in 1992 35.9
Coonawarra 77.6 83.6 in 1992* 36.4
Mount Gambier Aero 95.0 98.6 in 1995 54.1
Cape Jaffa (The Limestone) 58.2 68.0 in 1998 32.2
Edithburgh 59.6 64.6 in 1998 26.0
Neptune Island 49.4 53.2 in 1998 29.8
Mount Dare 68.0 74.5 in 1998* 11.0
Kingscote Aero 60.4 80.4 in 2000 26.6
Robe 70.4 72.0 in 2000 46.0
Mount Schank (Jethia) 84.2 110.4 in 2000* 54.2

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



Lowest April mean daily maximum temperature for at least 20 years
Observed
(°C)		 Most recent
lower		 Average for
April
Hawker 22.7 22.0 in 1983* 25.5

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



Lowest April mean daily minimum temperature for at least 20 years
Observed
(°C)		 Most recent
lower		 Average for
April
Kimba 9.9 9.8 in 1995* 11.3

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



Extremes Maps Records Summaries Important notes the top

Summary statistics for April 2023
Maximum temperatures
(°C)		 Minimum temperatures
(°C)		 Rainfall
(millimetres)
Mean for
April
2023		 Diff
from
average		 Highest for
April
2023		 Mean for
April
2023		 Diff
from
average		 Lowest for
April
2023		 Total for
April
2023		 Average
for
April		 Rank of
April
2023		 Fraction of
April
average
Northwest (district 16)
Andamooka 26.4 -1.0 32.3 6th 13.7 -0.5 9.3 14th 14.4 16.4 high 88%
Coober Pedy Airport 26.3 -1.0 33.5 11th 14.0 -0.5 9.3 29th 53.6 14.8 v high 362%
Ernabella (Pukatja) 25.5 -1.8 35.5 11th 13.3 -0.1 5.6 30th 42.0 15.7 high 268%
Roxby Downs (Olympic Dam Aerodrome) 26.4 -1.0 31.7 6th 12.3 -0.5 6.3 30th 14.6 17.2 average 85%
Tarcoola Aero 25.9 -1.4 33.1 4th 12.1 -0.2 6.8 29th 55.8 14.7 v high 380%
Woomera Aerodrome 24.9 -0.8 30.5 4th 12.5 -0.7 7.3 30th 25.4 12.9 high 197%
Far North (district 17)
Leigh Creek Airport 25.5 -0.9 30.4 6th 12.4 -0.7 6.0 30th 17.4 14.6 high 119%
Marree Aero 27.6 -1.4 33.0 6th 13.2 -1.0 6.9 30th 8.8 10.2 average 86%
Moomba Airport 28.6 -0.7 35.5 6th 15.2 -0.5 7.9 30th 9.2 8.9 average 103%
Oodnadatta Airport 28.6 0.0 38.8 11th 15.2 +0.7 8.5 30th 23.0 11.2 high 205%
Western Agricultural (district 18)
Ceduna AMO 24.4 +0.1 33.8 4th 12.2 +1.4 6.4 13th 38.6 20.3 high 190%
Cleve 23.0 +0.2 30.5 4th 12.6 +0.2 8.4 16th 42.4 28.7 high 148%
Cleve Aerodrome 23.1 -0.3 30.5 5th 12.2 -0.3 8.3 16th 34.2 25.1 high 136%
Coffin Bay (Point Avoid) 22.0   29.2 25th 14.1   10.7 21st 36.8
Cultana (Defence) 24.1   30.2 4th 12.2   7.0 29th 40.4
Cummins Aero 23.5 -0.5 31.8 5th 10.9 +0.3 3.5 13th 28.4 26.7 average 106%
Elliston 23.4 +0.9 30.7 5th 13.4 +1.1 8.4 2nd 25.8 27.3 average 95%
Kimba 23.1 -1.0 29.8 4th 9.9 -1.4 5.5 29th 36.0 22.7 high 159%
Kyancutta 25.5 0.0 33.6 4th 8.9 -0.7 4.0 13th 32.9 19.6 high 168%
Neptune Island 19.5 -0.1 22.1 25th 15.0 -0.1 10.6 16th 49.4 29.8 high 166%
North Shields (Port Lincoln AWS) 22.6 +0.2 31.1 26th 12.1 -0.2 7.5 29th 37.2 21.6 high 172%
Nullarbor 24.6 -0.4 33.2 4th 12.3 +0.6 7.5 21st 63.0 22.6 v high 279%
Port Augusta Aero 25.3 -1.5 31.1 25th 11.7 -1.3 5.2 30th 30.2 20.7 high 146%
Streaky Bay 24.0 +0.1 32.5 4th 13.6 +0.8 8.5 21st 45.3 23.9 high 190%
Whyalla Aero 23.5 -0.5 30.3 26th 11.2 -0.7 6.1 29th 21.2 21.5 average 99%
Wudinna Aero 25.1 -0.4 32.9 4th 10.3 0.0 3.4 20th 31.4 17.6 high 178%
Upper North (district 19)
Hawker 22.7 -2.8 27.2 4th 10.2 -0.9 2.8 30th 24.4 19.9 high 123%
Yongala 21.4 -0.6 27.9 4th     2.2 17th 24.8 25.0 average 99%
Northeast (district 20)
Gluepot Reserve (Gluepot) 24.1 -0.9 30.5 5th 8.4 -0.2 2.0 30th 15.6 20.3 average 77%
Yunta Airstrip 23.0 -1.6 29.8 27th 7.8 -1.5 2.0 30th 21.0 12.1 high 174%
Lower North (district 21)
Clare High School 21.2 -0.6 27.7 5th 8.7 -0.4 2.7 30th 45.0 37.6 average 120%
Port Pirie Aerodrome AWS 24.2   30.5 5th 11.2   6.9 20th 38.2
Snowtown (Rayville Park) 24.0 -0.9 30.8 5th 8.5 -1.0 3.4 2nd 21.8 24.7 average 88%
Yorke Peninsula (district 22A)
Edithburgh 21.4 0.0 28.6 26th 13.1 0.0 7.7 29th 59.6 26.0 v high 229%
Kadina AWS 23.2 -0.9 29.5 5th 10.4 -0.1 6.5 3rd 40.4 25.5 high 158%
Minlaton Aero 22.3 -1.1 30.9 26th 11.7 -0.2 5.9 29th 35.6 26.3 high 135%
Stenhouse Bay 21.3 +0.2 28.6 26th 13.9 -0.2 10.0 21st 56.8 28.2 high 201%
Warooka 21.9 -0.2 28.8 5th 12.6 0.0 8.0 29th 68.3 32.9 high 208%
Kangaroo Island (district 22B)
Cape Borda 18.9 -0.9 24.1 5th 12.7 +0.1 9.2 10th 79.6 40.1 v high 199%
Cape Willoughby 19.5 +0.3 25.7 25th 14.3 0.0 9.1 29th 74.8 39.0 v high 192%
Kingscote Aero 21.3 -0.5 26.8 5th 9.0 +0.1 2.7 29th 60.4 26.6 v high 227%
Parndana CFS AWS 20.1 -1.0 27.7 5th 10.4 -0.3 4.9 29th 81.2 38.2 v high 213%
Adelaide Plains (district 23A)
Adelaide (West Terrace / ngayirdapira) 22.2 0.0 28.9 5th 13.1 +0.3 8.5 10th 66.2 43.8 high 151%
Adelaide Airport 21.8 -0.5 29.7 26th 12.5 +0.6 8.6 10th 46.4 34.3 high 135%
Edinburgh RAAF 22.6 -0.6 30.2 5th 12.1 +0.3 7.2 10th 52.4 30.6 high 171%
Parafield Airport 23.0 +0.1 30.4 5th 11.8 0.0 6.4 10th 54.0 38.1 high 142%
Roseworthy AWS 23.3 -0.9 30.6 5th 10.9 +0.4 5.5 10th 25.0 29.7 average 84%
County Light (district 23B)
Nuriootpa PIRSA 21.0 -1.0 27.4 25th 8.5 -0.7 3.3 30th 28.0 33.9 average 83%
Mount Lofty Ranges (district 23C)
Hindmarsh Island AWS 21.7 -0.1 28.5 25th 12.3 -0.2 7.8 24th 37.2 28.4 average 131%
Kuitpo Forest Reserve 19.0 -0.8 25.9 5th 11.0 -0.3 7.1 2nd 67.2 55.9 average 120%
Mount Barker 26.9 4th 4.1 29th 41.2* 57.4
Mount Crawford AWS 18.4 -1.0 25.0 5th 10.2 -0.4 5.6 2nd 59.0 43.6 average 135%
Mount Lofty 16.6 +0.2 24.3 5th 9.7 -0.2 4.3 2nd 83.2 59.8 high 139%
Noarlunga 21.9 -0.6 28.9 26th 13.3 -0.4 9.2 29th 51.8 33.5 high 155%
Parawa (Second Valley Forest AWS) 18.2 -0.1 25.6 5th 11.5 +0.2 7.7 29th 103.0 56.7 high 182%
Victor Harbor (Encounter Bay) 21.4 -0.2 28.4 25th 10.6 +0.1 5.8 24th 50.6 35.9 high 141%
Upper Murray Valley (district 24A)
Loxton Research Centre 22.9 -1.1 30.0 5th 9.2 +0.5 2.1 30th 21.4 18.4 high 116%
Renmark Aero 23.4 -1.2 30.7 5th 8.9 -0.4 2.5 30th 28.8 18.2 average 158%
Lower Murray Valley (district 24B)
Eudunda 20.3 -1.2 26.6 6th 10.4 +0.5 6.5 2nd 28.3 32.9 average 86%
Murray Bridge 23.1 -0.5 29.6 25th 11.0 +0.6 6.7 11th 23.6 28.8 average 82%
Murray Bridge (Pallamana Aerodrome) 23.0 -0.5 29.5 25th 9.3 -0.2 3.4 2nd 14.0 25.4 average 55%
Strathalbyn Racecourse 22.2 -0.3 28.6 24th 10.8 +0.1 5.8 2nd 23.2 27.6 average 84%
Murray Mallee (district 25A)
Karoonda 22.2 -1.6 29.4 25th 8.9 -0.8 4.1 29th 34.0 24.5 high 139%
Upper Southeast (district 25B)
Keith 21.7 -0.9 28.4 5th 9.9 +0.6 3.2 2nd 56.0 32.6 high 172%
Keith (Munkora) 21.4 -1.9 28.0 25th 8.6 +0.3 1.1 2nd 52.8 24.9 high 212%
Lameroo (Austin Plains) 22.1 -1.3 28.5 6th 9.5 +0.2 4.3 30th 35.8 24.1 average 149%
Lower Southeast (district 26)
Cape Jaffa (The Limestone) 19.9 -0.1 26.5 25th 11.3 +0.5 6.0 11th 58.2 32.2 v high 181%
Coonawarra 20.1 -1.0 26.7 26th 9.3 +1.4 3.3 29th 77.6 36.4 v high 213%
Mount Gambier Aero 19.4 -0.2 25.8 25th 10.0 +1.2 3.4 3rd 95.0 54.1 high 176%
Naracoorte Aerodrome 20.8 -1.3 27.5 25th 9.4 +1.2 2.4 2nd 57.4 27.9 high 206%
Padthaway South 20.9 -1.2 27.5 25th 8.6 +0.3 1.2 2nd 48.6 29.0 high 168%
Robe 19.5 +0.6 23.9 25th 12.2 +0.6 8.0 12th 70.4 46.0 high 153%
Robe Airfield 20.0 -0.6 25.9 25th 10.9 +1.3 5.2 11th 86.8 40.5 highest 214%

* note: there were several days without observations at Mount Barker, so the monthly rainfall total is likely higher.

Extremes Maps Records Summaries Important notes the top

Notes

The Monthly climate summary, usually published in the first week of the following 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.

This statement has been prepared based on information available at 1 pm on Monday 1 May 2023. 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.

Information about Australian Indigenous seasonal calendars is available at the Indigenous Weather Knowledge website.

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