South Australia in August 2011: Warm and generally dry.

  • Warmer than average this August by 1C to 3C.
  • New warmest August temperatures records at some locations in the south of the state.
  • Near average rainfall though tending below average in many locations.

Rainfall

Rainfall totals were below average across the Pastoral districts with totals generally ranging from 2 to 20mm, in what is typically a low rainfall time of the year in these areas. The highest August rainfall total recorded in the Pastoral Districts was 39.8 mm at Yardea in the Northwest Pastoral district with the majority of that total occurring with some isolated thunderstorm activity in that district in the first week of the month. Oodnadatta and Marla both recorded no rainfall this month, against average August rainfall of 8.2mm, though this has happened previously at these stations.

August rainfall totals across the Agricultural districts were quite mixed, with many areas tending below average for rainfall, though parts of the western and northern Eyre Peninsula, the Mount Lofty Ranges, the Adelaide Plains, and the Murraylands and the Upper South-east tended slightly above average.

Rainfall totals generally ranged from 30 to 80 mm, tending to the upper end of that range in the south-east and the Mount Lofty Ranges, and with several locations recording in excess of 100m in the Mount Lofty Ranges. The highest August rainfall total recorded in the Agricultural districts was 149.6mm at Crafers (Mount Lofty).

This year to date, rainfall totals have been 30 to 40% above average across most districts, apart from the southern agricultural districts where rainfall has been close to average for the year to the end of August. Much of the above average year to date rainfall is due to very wet conditions January to March, with rainfall tending below average since then. The recent drier conditions have led to growing season (April to October ) rainfall to the end of August being 30 to 80 mm below average in many locations in the agricultural areas, though this is very mixed from location to location across different regions.

Some sites had their highest total August rainfall for at least 25 years.
Some sites had their lowest total August rainfall on record.
Some sites had their lowest total August rainfall for at least 25 years.
See a map of rainfall deciles.

Temperature

The weather patterns in August 2011 were dominated by blocking high pressure systems centred in the Tasman Sea leading to more northerly winds, and warmer temperatures across South Australia. State-wide the monthly mean temperature (the average of the maximum and minimum temperatures) for August 2010 was 2.0 C warmer than average this August, the fourth warmest in the area averaged record which goes back to 1950.

Mean maximum temperatures were generally between 1C and 2C above average across the Agricultural districts this August, and 2C to 3C across average across the Pastoral Districts. Some sites set new record warmest temperature records for August as a whole.

In the Pastoral districts mean maximum temperatures ranged from 19.3 C at Yunta Airstrip to 25.2 C at Oodnadatta Airport. The highest recorded maximum temperature in the Pastoral districts for August was 34.5 C at Ernabella on the 25th. Mean maximum temperatures over the Agricultural districts ranged from 12.1 C at Mount Lofty to 21.7 C at Port Augusta Aero.

The highest maximum recorded in the Agricultural districts during August was 31.4 C at Port Augusta on the 3rd. The lowest was 7.7 C at Mount Lofty on the 8th of August.

Mean minimum temperatures were warmer than average by up to 2 degrees around the state. Some locations around southern coasts- Maitland, Lameroo, Cape Willoughby and Coonawarra, had record warmest August overnight minimum temperatures.

Mean minimum temperatures in the pastoral areas ranged from 5.7 C at Gluepot to 8.8C at Coober Pedy Airport. Over the Agricultural districts mean monthly minimum temperatures ranged from 3.7 C at Yongala to 12.7 C at Neptune Island. The lowest recorded minimum temperature this August was -5.0 C at Yongala on the 28th .

Some sites had their highest August mean daily maximum temperature on record.
Some sites had their highest August mean daily maximum temperature for at least 25 years.

Further information

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Extremes in August 2011
Hottest day 34.5 °C at Ernabella (Pukatja) on the 25th
Warmest days on average 25.2 °C at Oodnadatta Airport
Coolest days on average 12.1 °C at Mount Lofty
Coldest day 7.7 °C at Mount Lofty on the 8th
Coldest night -5.0 °C at Yongala on the 28th
Coolest nights on average 3.7 °C at Yongala
Warmest nights on average 12.7 °C at Neptune Island
Warmest night 15.7 °C at Neptune Island on the 1st
Warmest on average overall 16.7 °C at Oodnadatta Airport
Coolest on average overall 9.5 °C at Mount Lofty
Wettest overall 149.6 mm at Crafers (Mt Lofty)
Highest wind gust 96 km/h at Cape Willoughby on the 16th

Highest total August rainfall for at least 25 years
Total rainfall
for August 2011 (mm)
Most recent August
at least this wet
Years since
wetter
Average for
August
Moonta 59.8 75.6 in 1986 25 40.6



Record lowest total August rainfall
Total rainfall
for August 2011 (mm)
Previous driest
for August
Years of
record
Average for
August
Oodnadatta Airport 0.0 = 0.0 in 2006 63 8.2
Marla Police Station 0.0 = 0.0 in 1995 26 8.2

Lowest total August rainfall for at least 25 years
Total rainfall
for August 2011 (mm)
Most recent August
at least this dry
Years since
drier
Average for
August
Angaston 6.2 5.9 in 1914 96 71.2



Record highest August mean daily maximum temperature
Mean daily maximum
temperature
for August 2011 (°C)
Previous warmest
for August
Years of
record
Average for
August
Mount Gambier Aero 16.1 = 16.1 in 1993 69 14.1

Highest August mean daily maximum temperature for at least 25 years
Mean daily maximum
temperature
for August 2011 (°C)
Most recent August
at least this warm
Years since
warmer
Average for
August
Andamooka 23.1 24.3 in 1982 29 20.5



Record highest August daily minimum temperature
Highest daily minimum
temperature
in August 2011 (°C)
Previous warmest
for August
Years of
record
Average for
August
Neptune Island 15.7 on the 1st = 15.7 on the 15th in 2009 50 11.1



Record highest August mean daily minimum temperature
Mean daily minimum
temperature
for August 2011 (°C)
Previous warmest
for August
Years of
record
Average for
August
Lameroo Comparison 7.1 6.7 in 1984 96 4.8
Neptune Island 12.7 12.4 in 2007 49 11.1
Cape Willoughby 11.4 11.1 in 1982 43 9.6
Maitland 9.1 8.8 in 2009 31 7.1
Loxton Research Centre 6.1 6.0 in 2009 27 4.3
Coonawarra 7.0 6.7 in 2009 25 5.3

Highest August mean daily minimum temperature for at least 25 years
Mean daily minimum
temperature
for August 2011 (°C)
Most recent August
at least this warm
Years since
warmer
Average for
August
Mount Barker 6.7 6.8 in 1945 66 4.9
Cleve 9.1 9.4 in 1977 33 7.4
Keith 7.4 7.7 in 1984 27 5.9



Summary statistics for August 2011
Maximum temperatures
for August
(°C)
Minimum temperatures
for August
(°C)
Rainfall
for August
(millimetres)
Mean for
August
2011
Diff
from
average
Highest for
August
2011
Mean for
August
2011
Diff
from
average
Lowest for
August
2011
Total for
August
2011
Average
for
August
Rank of
August
2011
Fraction of
August
average
Northwest (district 16)
Andamooka 23.1 +2.6 30.4 2nd 8.6 +1.4 4.6 18th 10.8 13.3 average 81%
Coober Pedy Airport 23.3   30.5 3rd 8.8   2.3 8th 1.2
Ernabella (Pukatja) 23.8   34.5 25th 6.0   0.0 7th 0
Nonning 19.8 +1.6 28.8 3rd 5.7 +1.2 0.9 28th 19.6 25.0 average 78%
Roxby Downs (Olympic Dam Aerodrome) 22.8   30.0 2nd 6.7   0.4 28th 9.0
Tarcoola Aero 22.7   30.4 3rd 6.3   0.6 8th 4.2
Woomera Aerodrome 21.5 +2.7 29.7 3rd 8.4 +1.6 3.6 18th 6.4 13.7 average 47%
Far North (district 17)
Arkaroola 21.3 +2.3 27.0 25th 5.1 +0.5 0.0 9th 10.1 14.3 average 71%
Leigh Creek Airport 21.4 +2.4 27.8 2nd 7.4 +1.3 1.1 6th 10.6 16.1 average 66%
Marree Aero 23.7   29.3 3rd 7.4   1.9 9th 1.8
Marree Comparison 24.6 +3.2 29.8 3rd 7.8 +1.5 3.0 6th 1.3 9.2 low 14%
Moomba Airport 25.0   30.6 1st 7.7   3.2 9th 0
Oodnadatta Airport 25.2 +3.1 31.2 16th 8.2 +0.8 2.7 7th 0 8.2 lowest 0%
Western Agricultural (district 18)
Ceduna AMO 20.1 +1.5 27.3 3rd 6.8 +0.6 1.6 26th 38.0 34.7 average 110%
Cleve 18.1 +1.5 26.0 3rd 9.1 +1.7 5.1 9th 50.8 48.1 average 106%
Cleve Aerodrome 17.7   25.6 3rd 8.5   3.4 26th 38.6 44.1 average 88%
Coulta (Coles Point) 17.3   22.5 24th 8.0   3.4 30th 62.0
Cummins Aero 17.7   22.3 23rd 5.3   0.0 26th 44.2
Elliston 18.5 +1.4 24.6 24th 9.1 +0.8 3.5 30th 57.4 59.3 average 97%
Kimba 18.0 +1.0 26.0 3rd     2.2 9th 43.8 42.0 average 104%
Kyancutta 19.7 +1.1 27.0 3rd 5.7 +0.7 -1.1 30th 32.8 39.1 average 84%
Minnipa Pirsa 18.8   26.2 3rd 7.6   3.3 30th 58.0
Neptune Island 16.6 +1.3 21.0 24th 12.7 +1.6 10.4 17th 33.4 63.5 low 53%
North Shields (Port Lincoln AWS) 18.0   23.1 24th 7.8   4.1 26th 36.6
Nullarbor 20.8 +1.3 30.1 14th 6.8 +1.0 1.5 8th 24.6 24.7 average 100%
Port Augusta Aero 21.7   31.4 3rd 6.2   0.5 28th 24.4
Streaky Bay 19.8 +2.3 27.5 23rd 9.6 +0.8 4.5 30th 65.5 50.4 high 130%
Whyalla Aero 19.9 +1.5 30.6 3rd 6.6 +0.7 1.6 27th 19.2 21.5 average 89%
Wudinna Aero 19.8   27.7 3rd 6.3   -1.3 30th 39.4
Upper North (district 19)
Hawker 20.5 +2.8 27.5 2nd 5.3 +1.0 -0.2 28th 18.0 32.0 average 56%
Yongala 16.6 +2.2 24.6 3rd 3.7 +1.2 -5.0 28th 40.6 43.6 average 93%
Northeast (district 20)
Gluepot Reserve (Gluepot) 19.9   29.0 3rd 5.7   -1.2 31st 26.3
Yunta Airstrip 19.3   28.0 3rd 5.8   -1.3 28th 16.2
Lower North (district 21)
Clare High School 15.6   24.4 3rd 5.1   -0.7 28th 73.0
Port Pirie Aerodrome 19.7   27.9 3rd 6.9   0.9 28th 28.2
Port Pirie Nyrstar Comparison 20.1 +2.0 27.5 3rd 9.6 +1.4 4.1 27th 28.8 35.0 average 82%
Snowtown (Rayville Park) 17.7   26.1 3rd 5.3   -1.2 30th 43.8
Yorke Peninsula (district 22A)
Edithburgh 17.2 +1.5 24.3 3rd 7.9 +0.5 2.8 26th 21.8 46.1 low 47%
Kadina AWS 17.9   25.0 3rd 5.3   -0.4 28th 46.0
Maitland 17.3 +1.9 23.5 3rd 9.1 +2.0 4.8 30th 59.4 61.1 average 97%
Minlaton Aero 17.3   21.7 24th 7.4   3.3 30th 33.2
Stenhouse Bay 17.5   22.2 24th 10.2   7.4 6th 26.4
Warooka 17.3 +1.6 20.8 2nd 8.6 +0.9 5.4 9th 31.0 59.2 low 52%
Kangaroo Island (district 22B)
Cape Borda 15.7   19.1 24th 10.0   6.2 31st 49.6
Cape Willoughby 15.6 +1.2 19.4 2nd 11.4 +1.8 8.7 7th 43.4 73.4 low 59%
Kingscote Aero 17.7   21.7 3rd 5.5   0.4 30th 30.8
Adelaide Plains (district 23A)
Adelaide (Kent Town) 18.0 +1.4 24.6 3rd 9.2 +1.0 5.4 28th 95.2 68.9 high 138%
Adelaide Airport 17.3 +1.4 23.7 3rd 8.2 +0.7 4.0 31st 57.4 50.2 average 114%
Edinburgh RAAF 17.8 +1.3 25.8 3rd 7.1 +0.6 2.1 30th 62.4 50.0 average 125%
Parafield Airport 18.3 +2.1 25.6 3rd 7.4 +0.7 1.9 30th 55.6 54.0 average 103%
Roseworthy AWS 17.8   26.8 3rd 6.4   0.1 30th 43.8
County Light (district 23B)
Nuriootpa Viticultural 16.0   24.6 3rd 6.4   -0.6 27th 73.2
Rosedale (Turretfield Research Centre) 17.6 +1.8 26.0 3rd 6.5 +0.8 -0.5 30th 64.3 57.5 average 112%
Mount Lofty Ranges (district 23C)
Hindmarsh Island AWS 17.7   25.8 3rd 9.2   5.6 14th 31.2
Kuitpo Forest Reserve 14.7   21.6 3rd 8.1   3.4 30th 86.4
Mount Barker 15.5 +1.3 23.0 3rd 6.7 +1.8 1.2 31st 79.8 102.4 average 78%
Mount Crawford (Mt Crawford AWS) 13.7   21.2 3rd 7.7   3.8 30th 106.2
Mount Lofty 12.1   19.1 3rd 6.9   3.3 30th 124.8
Noarlunga 17.2   22.3 3rd 9.9   6.1 30th 28.8
Parawa (Second Valley Forest AWS) 13.9   17.5 24th 8.2   5.2 30th 73.2
Victor Harbor (Encounter Bay) 17.6   24.4 3rd 7.1   2.4 31st 54.8
Upper Murray Valley (district 24A)
Loxton Research Centre 18.6 +1.1 27.8 3rd 6.1 +1.8 0.5 28th 38.0 27.8 high 137%
Renmark Aero 19.4   29.2 3rd 5.7   -1.1 28th 24.0
Lower Murray Valley (district 24B)
Eudunda 15.8 +1.4 24.9 3rd 6.7 +1.4 2.0 30th 62.2 56.0 average 111%
Meningie 17.6 +1.6 22.4 3rd 8.0 +0.8 3.2 31st 54.2 56.8 average 95%
Murray Bridge (Pallamana Aerodrome) 18.1   27.4 3rd 5.3   -0.7 31st 40.4
Murray Bridge Comparison 19.1 +1.6 27.1 3rd 6.8 +0.9 1.5 31st 37.3 37.0 average 101%
Strathalbyn Racecourse 17.4   24.9 3rd 7.8   3.9 31st 34.0
Murray Mallee (district 25A)
Karoonda 18.1   27.6 3rd 5.7   0.1 31st 56.6 38.4 high 147%
Upper Southeast (district 25B)
Keith 17.6 +1.5 26.0 3rd 7.4 +1.5 0.5 30th 54.0 58.2 average 93%
Keith (Munkora) 17.1   24.7 3rd 6.1   -0.6 30th 31.0
Lameroo (Austin Plains) 17.2   25.8 3rd 5.6   0.2 30th 45.8
Lameroo Comparison 17.9 +1.5 27.1 3rd 7.1 +2.3 2.3 30th
Lower Southeast (district 26)
Cape Jaffa (The Limestone) 15.6   19.8 3rd 8.1   4.0 14th 35.8
Coonawarra 16.3 +1.5 24.1 3rd 7.0 +1.7 0.0 12th 80.6 80.7 average 100%
Mount Gambier Aero 16.1 +2.0 22.8 3rd 6.9 +1.4 0.6 14th 93.6 95.0 average 99%
Naracoorte Aerodrome 16.5   24.2 3rd 7.0   0.8 12th 55.8
Padthaway South 16.8   24.8 3rd 7.3   1.5 12th 59.0
Robe Airfield 16.6   24.1 3rd 6.8   0.5 7th 52.0
Robe Comparison 15.5 +1.2 18.1 3rd 9.3 +0.8 3.1 9th 60.2 85.4 low 70%

Notes

A Monthly Climate Summary is prepared to list 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. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

This statement has been prepared based on information available at 4 pm on Thursday 1 September 2011. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages 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 20 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.

Further information

Media
(03) 9669 4057
Enquiries