South Australia in summer 2009-10

South Australia in summer 2009-10

Well above average temperatures but mixed rainfall.

  • Summer rainfall generally near average across the state, apart from the northeast, which had a wet finish and above average summer rainfall totals.
  • Temperatures were well above average across the season, and early January saw a heatwave event that extended across southern Australia.

Rainfall

Summer 2010 rainfall over South Australia was very variable, even for a summer season. Pastoral districts of South Australia had above average rainfall in December and particularly through February leaving the season as a whole wetter than average in those areas.

Agricultural districts further south remained near average generally through summer, though the northern Eyre Peninsula and the Mount Lofty and southern Flinders ranges tended below average for December and February rainfall leaving those areas with below average rainfall for summer as a whole.

Rainfall totals in the pastoral areas were extremely variable ranging from around 20 to 100mm, with higher localised totals at some locations of over 150mm. Moomba Airport recorded a summer rainfall of 270.4mm, most of this occurring during February, and this is then the third wettest summer at Moomba since records began in 1972. This is also the highest rainfall total in the state for this summer. Wirulla in the western Agricultural district recorded only 11.2mm on 6 days across the whole of this summer as the lowest summer rainfall total this year.

Totals in the agricultural areas were generally between 20 mm and 60 mm with the southeast and the Mount Lofty Ranges locations more consistently around the upper end of that range.

Some sites had their lowest total summer rainfall for at least 25 years. See a map of rainfall deciles.

Temperature

South Australia generally was very much warmer than average for summer 2010 in the south but cooler than average in the north for maximum temperatures under cloudy conditions associated with the above average rainfall in that part of the state. A heatwave event across southern Australia in the first week of January saw southern parts of South Australia with temperatures over 8°C degrees above average for that time of year. Widespread rainfall in the northeast in February saw the end of the season being very much cooler than average in the associated cloudy conditions in that area.

Also, many locations had numbers of hot days (days with maximum temperatures > 35°C ) and very hot days (days with maximum temperatures > 40°C ) about twice the summer average.

Maximum temperature

Mean maximum temperatures over the pastoral districts of the state were up to 2°C warmer than normal in the southern pastoral districts, but tending up to 1°C  cooler than average in the northern pastoral areas, and ranged from 32.4°C at Yunta in the Northeast district to 36.9°C at Marree in the Far North district. The hottest summer day in the pastoral areas was on the 27th January with 45.5°C at Marree.

Mean maximum temperatures in the agricultural districts ranged from 22.6°C at Cape Willoughby on Kangaroo Island to Mount Lofty in the Mount Lofty Ranges to 34.0°C at both Kyancutta and Port Augusta Aerodrome in the Western Agricultural Districts. The highest recorded maximum temperature for this summer in the state was 45.8°C on the 11th January at both Murray Bridge in the Lower Murray Valley, and at Keith in the Upper Southeast. The coolest daily maximum temperature was recorded at Kuitpo Forest in the Mount Lofty Ranges with 15.6°C on the 10th of December.

Minimum temperature

In the pastoral districts mean monthly overnight minimum temperatures ranged from 15.6°C at Gluepot Reserve in the Northeast district to 23.2°C at Moomba Airport in the Far North district. The lowest recorded minimum temperature in the pastoral areas was 7.4°C recorded at Gluepot Reserve on 9th December 2009. The warmest recorded minimum temperature in the pastoral districts was 31.1°C at Arcaroola on the 21st January 2010.

Over the agricultural districts mean minimum temperatures also were generally up to 1°C above average. They  ranged from 10.9°C at Naracoorte Aerodrome in the Lower South East district to 19.0 °C at Port Augusta Aerodrome in the Western Agricultural district.

The lowest recorded minimum temperature for summer was 0.1°C at Loxton on the 4th December 2009, whilst the highest recorded minimum temperature was 32.0°C at Port Pirie on the 11th January 2010.

Some sites had their lowest summer temperature on record. Some sites had their warmest summer night (highest daily minimum temperature) on record.

Further information

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Extremes in summer 2009-10
Hottest day 45.8 °C at Keith (Munkora) on 11 Jan 2010
45.8 °C at Murray Bridge (Pallamana Aerodrome) on 11 Jan 2010
Warmest days on average 36.9 °C at Marree Comparison
Coolest days on average 22.6 °C at Cape Willoughby
Coldest day 15.6 °C at Kuitpo Forest Reserve on 10 Dec 2009
Coldest night 0.1 °C at Loxton Research Centre on 4 Dec 2009
Coolest nights on average 10.9 °C at Naracoorte Aerodrome
Warmest nights on average 23.2 °C at Moomba Airport
Warmest night 32.0 °C at Port Pirie Nyrstar Comparison on 11 Jan 2010
Wettest overall 270.4 mm at Moomba Airport
Highest wind gust 141 km/h at Lameroo (Austin Plains) on 31 Dec 2009

Lowest total summer rainfall for at least 25 years
Total rainfall
for summer 2009-10 (mm)
Most recent lower
for summer
Years since
lower
Average for
summer
Orroroo 12.0 11.5 in 1932 76 67.0
Adelaide (Morphett Vale) 24.8 20.0 in 1964 26 67.2



Record highest summer daily minimum temperature
Highest daily minimum
temperature
in summer 2009-10 (°C)
Previous highest
for summer
Years of
record
Average for
summer
Neptune Island 23.3 on 11 Jan 2010 23.2 on 20 Feb 1997 49 15.8
Warooka 28.4 on 11 Jan 2010 = 28.4 on 22 Jan 2006 46 15.0



Record lowest summer temperature
Lowest temperature
in summer 2009-10 (°C)
Previous lowest
for summer
Years of
record
Average for
summer
Elliston 4.8 on 9 Dec 2009 5.6 on 29 Dec 1971 49 15.3
Loxton Research Centre 0.1 on 4 Dec 2009 4.5 on 1 Dec 2001 26 13.9



Summary statistics for summer 2009-10
Maximum temperatures
for summer
(°C)
Minimum temperatures
for summer
(°C)
Rainfall
for summer
(millimetres)
Mean for
summer
2009-10
Diff
from
average
Highest for
summer
2009-10
Mean for
summer
2009-10
Diff
from
average
Lowest for
summer
2009-10
Total for
summer
2009-10
Average
for
summer
Rank of
summer
2009-10
Fraction of
summer
average
Northwest (district 16)
Andamooka 36.1 +0.6 43.3 27 Jan 2010 21.7 +1.2 13.7 11 Dec 2009 74.1 60.2 high 123%
Coober Pedy Airport 35.4   43.4 27 Jan 2010 21.4   12.8 25 Dec 2009 30.8
Ernabella (Pukatja) 34.0   41.8 7 Dec 2009 20.0   13.0 25 Dec 2009 144.4
Nonning 33.7 +1.3 42.0 9 Jan 2010 17.2 +1.1 7.5 11 Dec 2009 25.1 51.0 low 49%
Roxby Downs (Olympic Dam Aerodrome) 35.8   43.0 27 Jan 2010 20.8   13.6 11 Dec 2009 34.2
Tarcoola Aero 36.0   43.1 31 Dec 2009 19.0   9.1 11 Dec 2009 25.8
Woomera Aerodrome 34.8 +1.3 43.0 23 Dec 2009 20.0 +1.2 11.9 11 Dec 2009 43.6 48.5 average 90%
Far North (district 17)
Arkaroola 32.6 -0.8 41.9 22 Jan 2010 19.6 +0.6 11.0 12 Dec 2009 146.8 92.9 high 158%
Leigh Creek Airport 34.9 +0.7 42.4 22 Jan 2010 20.4 +0.6 12.6 12 Dec 2009 59.4 68.1 average 87%
Marree Aero 36.4   44.2 27 Jan 2010 21.8   13.1 12 Dec 2009 89.8
Marree Comparison 36.9 0.0 45.5 27 Jan 2010 21.8 +1.2 13.4 12 Dec 2009 82.1 54.6 high 150%
Moomba Airport 35.2   44.1 26 Jan 2010 23.2   17.8 20 Jan 2010 270.4
Oodnadatta Airport 36.5 -0.4 44.3 27 Jan 2010 22.7 +0.6 12.1 12 Dec 2009 89.6 72.3 high 124%
Western Agricultural (district 18)
Ceduna AMO 30.1 +2.1 43.5 23 Dec 2009 15.6 +0.9 5.0 9 Dec 2009 28.8 45.0 average 64%
Cleve 28.9 +1.4 42.0 10 Jan 2010 16.7 +1.5 7.7 9 Dec 2009 36.2 63.2 average 57%
Cleve Aerodrome 29.3   43.0 10 Jan 2010 15.9   7.5 9 Dec 2009 31.0 57.8 low 54%
Cummins Aero 30.4   43.6 9 Jan 2010 14.7   5.1 9 Dec 2009 51.4
Elliston 26.8 +1.5 40.5 23 Dec 2009 16.3 +1.0 4.8 9 Dec 2009 54.7 39.9 high 137%
Kimba 32.0 +1.4 42.2 9 Jan 2010 15.9 +0.7 7.0 11 Dec 2009 29.2 56.6 low 52%
Kyancutta 34.0 +2.0 45.2 23 Dec 2009 14.4 +0.5 4.7 9 Dec 2009 18.4 49.8 low 37%
Neptune Island 23.0 +1.5 32.5 10 Jan 2010 17.0 +1.2 13.5 4 Dec 2009 25.4 43.1 average 59%
North Shields (Port Lincoln AWS) 26.7   43.6 10 Jan 2010 15.6   6.5 9 Dec 2009 62.4
Nullarbor 28.8 +1.5 43.3 8 Jan 2010 15.9 +0.7 7.7 5 Dec 2009 83.0 38.4 v high 216%
Port Augusta Aero 34.0   44.5 11 Jan 2010 19.0   11.8 11 Dec 2009 20.8
Streaky Bay 30.7 +2.2 41.8 8 Jan 2010 16.9 +1.2 10.0 9 Dec 2009 11.9 38.7 low 31%
Whyalla Aero 29.9 +0.7 43.1 23 Dec 2009 17.7 +0.7 10.2 9 Dec 2009 32.6 59.3 average 55%
Wudinna Aero 33.9   44.9 9 Jan 2010 14.6   4.6 9 Dec 2009 20.4
Upper North (district 19)
Hawker 33.9 +0.8 41.5 23 Dec 2009 18.2 +1.0 10.0 12 Dec 2009 33.4 62.2 average 54%
Yongala 31.7 +1.9 40.3 10 Jan 2010 13.6 +0.9 3.3 11 Dec 2009 20.8 66.4 low 31%
Northeast (district 20)
Gluepot Reserve (Gluepot) 33.2   43.9 10 Jan 2010 15.6   7.4 9 Dec 2009 78.7
Yunta Airstrip 32.4   41.7 22 Jan 2010 16.1   8.6 11 Dec 2009 77.0
Lower North (district 21)
Clare High School 30.2   40.3 9 Jan 2010 14.3   4.8 9 Dec 2009 40.4
Port Pirie Aerodrome 32.6   43.3 9 Jan 2010 16.6   8.5 9 Dec 2009 29.2
Port Pirie Nyrstar Comparison 32.5 +1.3 43.0 9 Jan 2010 18.7 +1.4 11.5 4 Dec 2009 30.0 58.8 average 51%
Snowtown (Rayville Park) 32.5   43.0 10 Jan 2010 13.4   4.6 4 Dec 2009 69.4
Yorke Peninsula (district 22A)
Edithburgh 25.9   42.4 11 Jan 2010 16.7   8.2 9 Dec 2009 43.2
Kadina AWS 32.0   44.0 9 Jan 2010 14.2   6.4 4 Dec 2009 30.6
Maitland 29.7 +1.7 41.8 10 Jan 2010 16.5 +1.5 9.5 4 Dec 2009 38.8 61.3 average 63%
Minlaton Aero 29.7   42.8 11 Jan 2010 15.0   6.9 11 Dec 2009 43.2
Stenhouse Bay 25.2   41.4 11 Jan 2010 16.8   10.7 9 Dec 2009 47.8
Warooka 27.7 +1.1 41.6 10 Jan 2010 16.1 +1.1 9.2 18 Dec 2009 51.3 48.9 average 105%
Kangaroo Island (district 22B)
Cape Borda 24.5   37.7 9 Jan 2010 14.5   8.1 4 Dec 2009 37.6
Cape Willoughby 22.6 +1.3 38.5 16 Dec 2009 16.6 +1.2 11.3 9 Dec 2009 53.9 59.1 average 91%
Kingscote Aero 27.4   42.4 10 Jan 2010 12.3   4.2 4 Dec 2009 36.4
Adelaide Plains (district 23A)
Adelaide (Kent Town) 30.4 +2.0 42.8 11 Jan 2010 17.7 +1.1 10.3 9 Dec 2009 33.0 59.6 low 55%
Adelaide Airport 28.9 +1.7 41.0 10 Jan 2010 16.6 +1.1 10.0 9 Dec 2009 28.8 59.5 low 48%
Edinburgh RAAF 30.8 +1.6 44.5 11 Jan 2010 16.3 +0.4 8.1 4 Dec 2009 40.0 58.4 average 68%
Parafield Airport 31.1 +2.3 42.4 10 Jan 2010 16.0 +0.2 8.0 4 Dec 2009 18.6 63.0 v low 30%
Roseworthy AWS 31.9   45.1 11 Jan 2010 14.4   5.4 4 Dec 2009 14.2
County Light (district 23B)
Nuriootpa Viticultural 30.2   42.1 11 Jan 2010 14.1   5.5 9 Dec 2009 32.8
Rosedale (Turretfield Research Centre) 31.5 +1.8 44.1 11 Jan 2010 14.8 +0.1 5.4 4 Dec 2009 40.4 59.6 average 68%
Mount Lofty Ranges (district 23C)
Hindmarsh Island AWS 25.6   40.9 31 Dec 2009 15.7   10.4 7 Jan 2010 58.0
Kuitpo Forest Reserve 26.2   38.5 10 Jan 2010 14.2   7.2 9 Dec 2009 43.0
Mount Barker 29.2 +2.9 41.0 11 Jan 2010 12.1 +0.8 4.7 9 Dec 2009 46.8 85.4 low 55%
Mount Crawford (Mt Crawford AWS) 27.9   40.4 11 Jan 2010 14.1   6.6 4 Dec 2009 49.0
Noarlunga 28.3   40.3 10 Jan 2010 17.0   9.3 4 Dec 2009 28.2
Parawa (Second Valley Forest AWS) 24.0   38.8 10 Jan 2010 13.9   7.8 4 Dec 2009 78.4
Victor Harbor (Encounter Bay) 25.2   42.0 10 Jan 2010 14.2   7.3 9 Dec 2009 76.4
Upper Murray Valley (district 24A)
Loxton Research Centre 32.4 +1.6 44.3 10 Jan 2010 14.7 +0.8 0.1 4 Dec 2009 55.2 53.5 average 103%
Renmark Aero 33.4   44.9 22 Jan 2010 16.4   7.9 9 Dec 2009 40.4
Lower Murray Valley (district 24B)
Eudunda 30.4 +2.1 41.6 9 Jan 2010 14.7 +1.3 5.9 11 Dec 2009 28.8 69.1 low 42%
Meningie 27.0 +1.4 42.1 10 Jan 2010 14.1 +0.5 7.8 4 Dec 2009 61.0 58.3 average 105%
Murray Bridge (Pallamana Aerodrome) 30.8   45.8 11 Jan 2010 14.1   5.5 4 Dec 2009 35.8
Murray Bridge Comparison 31.0 +2.4 45.5 10 Jan 2010 15.0 +0.9 7.3 9 Dec 2009 42.2 57.6 average 73%
Strathalbyn Racecourse 28.2   43.1 11 Jan 2010 14.2   7.2 4 Dec 2009 35.8
Murray Mallee (district 25A)
Karoonda 31.2   44.5 11 Jan 2010 14.3   7.0 4 Dec 2009 52.3 60.2 average 87%
Upper Southeast (district 25B)
Keith 30.2 +1.1 44.0 10 Jan 2010 13.5 +0.8 6.5 4 Dec 2009 66.1 64.7 average 102%
Keith (Munkora) 30.7   45.8 11 Jan 2010 11.8   3.5 23 Feb 2010 64.8
Lameroo (Austin Plains) 31.4   44.5 11 Jan 2010 13.9   6.1 4 Dec 2009 64.6
Lameroo Comparison 31.1 +1.0 43.7 11 Jan 2010 14.8 +1.8 7.1 5 Jan 2010 63.0 65.5 average 96%
Lower Southeast (district 26)
Cape Jaffa (The Limestone) 24.4   39.5 10 Jan 2010 13.5   8.4 28 Jan 2010 48.0
Coonawarra 27.9 +1.6 41.6 11 Jan 2010 11.4 +0.4 4.3 24 Jan 2010 66.2 80.0 average 83%
Mount Gambier Aero 26.1 +1.7 42.5 11 Jan 2010 11.5 +0.6 5.2 24 Jan 2010 93.2 90.3 average 103%
Naracoorte Aerodrome 29.5   43.0 11 Jan 2010 10.9   3.0 4 Dec 2009 68.8
Padthaway South 28.9   42.9 10 Jan 2010 11.9   4.7 4 Dec 2009 68.0
Robe Airfield 24.4   38.9 10 Jan 2010 12.3   5.1 4 Jan 2010 63.0
Robe Comparison 22.8 +0.7 34.9 10 Jan 2010 14.0 +0.7 9.2 24 Jan 2010 58.6 66.7 average 88%

Notes

A Seasonal 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 1 pm on Monday 1 March 2010. 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