South Australia in July 2015: cool and dry across much of the State

In South Australia, most central and eastern districts saw below average rainfall for July. Rainfall was also below average in the northeast Pastorals, but western and northern parts of State saw falls closer to average for the month. Statewide temperatures were cooler than average as a whole, with cooler than normal days and nights particularly in central and eastern parts.

  • Dry across the central and eastern districts
  • Coolest July days since 2010
  • Cooler nights across most areas
  • Warmer July nights in the Northwest
  • Snowfall on the Mount Lofty and Flinders Ranges

July rainfall was below average for South Australia as a whole, with particularly dry areas through central and eastern parts of the State. The wettest period for most southern locations occurred between the 11th and 15th as a cold frontal system crossed the state, bringing totals of 25 to 50 mm to southern coasts and elevated regions across the Mount Lofty and Flinders Ranges. The passage of the cold front produced snowfall down to levels of about 500 metres on the morning of 11th. Showers persisted across southern districts to around the 16th as a result of a southerly airstream being directed across the coasts. A sequence of cold fronts swept across southern coastal areas from the 21st to 26th, bringing light to moderate periods of rain for agricultural areas.

The statewide mean maximum temperature was cooler than normal, coming in as the coolest July since 2010. The coolest temperatures for the month were recorded between the 11th and the 17th as a high pressure system located in the Great Australian Bight directed a southerly airstream across the state. Daytime time temperatures were up to 6 degrees below the July average for large areas of the state during this period. Minimum temperatures were also below average for July, with coldest nights being recorded between the 18th and 21st, as a high pressure system positioned over eastern parts of the State maintained calm conditions. Light winds and clear skies during this period resulted in minimum temperatures of around 5 to 10 degrees below average and morning frost reported across much of the state, with Strathalbyn, Parawa and Edithburgh having their lowest July temperature on record.

Despite the generally cool conditions across much of the state, only Coonawarra and Hawker had their lowest July mean daily maximum temperature for at least 20 years.

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Extremes in July 2015
Hottest day 28.6 °C at Coober Pedy Airport on the 31st
Warmest days on average 19.0 °C at Oodnadatta Airport
Coolest days on average 8.5 °C at Mount Lofty
Coldest day 5.3 °C at Mount Lofty on the 11th
Coldest night -5.7 °C at Gluepot Reserve (Gluepot) on the 20th
Coolest nights on average 2.0 °C at Yongala
Warmest nights on average 11.0 °C at Neptune Island
Warmest night 13.9 °C at Neptune Island on the 5th
Warmest on average overall 12.8 °C at Neptune Island
Coolest on average overall 6.2 °C at Mount Lofty
Wettest overall 161.0 mm at Crafers West
Wettest day 40.0 mm at Piccadilly (Woodhouse) on the 11th
Strongest wind gust 106 km/h at Neptune Island on the 11th

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


Lowest July mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
July
Coonawarra 13.0 12.8 in 1995 13.9
Hawker 14.7 14.4 in 1989* 15.9

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




Record lowest July temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Edithburgh 0.0 on the 20th 0.4 on the 24th in 2008 25 7.5
Parawa (Second Valley Forest AWS) 1.2 on the 20th 2.2 on the 12th in 1998 22 6.9
Strathalbyn Racecourse -1.6 on the 20th -0.7 on the 20th in 2006 20 6.6



Summary statistics for July 2015
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
July
2015
Diff
from
average
Highest for
July
2015
Mean for
July
2015
Diff
from
average
Lowest for
July
2015
Total for
July
2015
Average
for
July
Rank of
July
2015
Fraction of
July
average
Northwest (district 16)
Andamooka 17.6 -0.9 25.3 31st 5.5 -0.5 -0.3 20th 10.4 12.3 average 85%
Coober Pedy Airport 17.5 -1.0 28.6 31st 5.7 -0.7 0.9 19th 2.2 4.9 average 45%
Ernabella (Pukatja) 16.8 -1.5 27.1 31st 4.9 +0.6 -0.3 4th 15.4 13.4 average 115%
Mount Ive 16.2   21.3 30th 4.6   -2.5 1st 14.3 23.7 average 60%
Roxby Downs (Olympic Dam Aerodrome) 17.6 -0.9 25.6 31st 3.0 -1.3 -2.2 18th 0.6 7.2 low 8%
Tarcoola Aero 17.9 -0.9 26.1 31st 3.6 -1.1 -2.9 19th 7.4 12.4 average 60%
Woomera Aerodrome 16.6 -0.4 24.3 31st 5.3 -0.5 1.0 20th 3.0 14.9 low 20%
Far North (district 17)
Arkaroola 15.8 -0.8 23.2 31st 2.2 -1.1 -3.5 20th 1.2 14.8 low 8%
Leigh Creek Airport 16.0 -0.7 23.3 31st 4.2 -0.5 -0.3 18th 5.2 16.4 average 32%
Marree Aero 17.9 -1.3 25.0 31st 4.3 -0.8 0.3 19th 0.6 4.8 low 13%
Moomba Airport 18.5 -1.2 25.1 31st 5.5 -0.9 1.7 17th 0.6 15.1 average 4%
Oodnadatta Airport 19.0 -0.6 28.1 31st 6.3 +0.5 0.3 20th 9.8 9.7 high 101%
Western Agricultural (district 18)
Ceduna AMO 17.2 -0.2 22.6 5th 5.4 -0.4 -1.2 19th 19.4 39.6 low 49%
Cleve 14.7 -0.6 18.4 5th 6.7 -0.4 3.0 20th 41.8 46.3 average 90%
Cleve Aerodrome 14.3 -1.2 17.7 5th 6.2 -1.3 1.1 20th 33.4 43.7 average 76%
Coulta (Coles Point) 14.9 -0.6 17.3 2nd 6.3 -1.2 1.0 20th 32.2 50.6 low 64%
Cummins Aero 14.7   18.6 5th 4.1   -1.0 1st 43.2
Elliston 16.2 -0.2 18.4 5th     1.7 2nd 37.2 70.7 low 53%
Kimba 14.4 -1.1 18.5 31st 5.1 +0.1 -0.5 20th 38.4 41.6 average 92%
Kyancutta 16.6 -0.5 20.2 5th 4.7 -0.1 -2.9 1st 32.7 40.5 average 81%
Minnipa Pirsa 15.2 -1.0 19.8 5th 5.9 -0.7 2.0 1st 37.2 36.2 average 103%
Neptune Island 14.7 -0.6 17.7 4th 11.0 -0.3 7.6 11th 71.8 76.1 average 94%
North Shields (Port Lincoln AWS) 15.4 -0.7 18.5 30th 6.2 -1.3 2.9 20th 34.6 56.2 low 62%
Nullarbor 18.4 +0.2 25.2 31st 4.9 -0.3 0.8 19th 27.4 27.4 average 100%
Port Augusta Aero 16.5 -1.3 22.0 31st 4.1 -0.6 -1.3 20th 13.8 18.2 average 76%
Streaky Bay 16.3 -0.2 19.5 5th 8.1 -0.4 2.0 19th 34.2 61.1 low 56%
Whyalla Aero 16.4 -0.5 21.6 31st 4.7 -0.5 -2.3 20th 7.8 23.4 low 33%
Wudinna Aero 15.8 -1.1 19.9 5th 5.2 -1.0 -1.4 1st 28.2 36.7 low 77%
Upper North (district 19)
Hawker 14.7 -1.2 21.5 31st 2.9 -0.8 -3.0 28th 18.6 33.7 average 55%
Yongala 11.6 -1.2 16.9 31st 2.0 -0.2 -3.3 1st 30.6 39.5 average 77%
Northeast (district 20)
Gluepot Reserve (Gluepot) 16.0 -1.0 21.0 10th 3.2 -0.4 -5.7 20th
Lower North (district 21)
Clare High School 11.8 -1.0 15.6 9th 3.2 -0.9 -3.4 20th 55.4 66.8 average 83%
Port Pirie Aerodrome AWS 15.5   18.8 10th 5.4   -0.6 1st 56.8
Snowtown (Rayville Park) 14.6 -0.7 17.8 31st 3.8 -0.9 -1.8 1st 37.8 41.5 average 91%
Yorke Peninsula (district 22A)
Edithburgh 14.6 -0.5 17.8 5th 6.3 -1.2 0.0 20th 46.6 46.8 average 100%
Kadina AWS 14.8 -0.7 17.5 30th 4.2 -1.1 -2.2 1st 38.4 34.8 average 110%
Maitland 14.0 -0.3 17.0 23rd 6.2 -0.8 2.5 20th 60.0 65.9 average 91%
Minlaton Aero 14.4 -0.9 16.6 23rd 5.7 -1.4 2.0 20th 36.2 48.2 low 75%
Stenhouse Bay 15.1 -0.4 18.1 4th 8.3 -0.9 3.7 20th 56.0 67.5 average 83%
Warooka 14.5 -0.5 16.6 30th 6.8 -0.8 2.6 20th 43.0 65.5 low 66%
Kangaroo Island (district 22B)
Cape Borda 13.6 -0.7 16.3 4th 8.7 -0.5 5.5 31st 95.2 90.7 average 105%
Cape Willoughby 13.6 -0.6 16.4 30th 9.2 -0.6 5.6 11th 85.0 81.7 average 104%
Kingscote Aero 14.7 -0.7 18.8 30th 4.8 -1.2 0.2 28th 70.2 66.2 average 106%
Parndana Cfs AWS 13.0   16.1 30th 5.9   1.1 31st 90.6
Adelaide Plains (district 23A)
Adelaide (Kent Town) 14.7 -0.6 19.1 9th 6.7 -0.8 1.8 20th 73.6 76.5 average 96%
Adelaide Airport 14.5 -0.4 18.5 9th 6.8 -0.2 1.4 19th 42.8 59.4 low 72%
Edinburgh RAAF 14.9 -0.4 18.8 9th 5.3 -0.8 -0.6 20th 53.2 53.5 average 99%
Parafield Airport 15.0 -0.1 19.3 9th 5.0 -1.3 -0.3 20th 59.8 58.9 average 102%
Roseworthy AWS 14.7 -0.6 19.3 9th 4.7 -1.1 0.2 20th 49.6 42.2 high 118%
County Light (district 23B)
Nuriootpa Viticultural 12.9 -0.5 16.8 9th 3.7 -0.9 -3.5 20th 48.2 55.1 average 87%
Rosedale (Turretfield Research Centre) 14.4 -0.3 18.7 9th 4.2 -1.4 -2.1 20th 58.0 59.3 average 98%
Mount Lofty Ranges (district 23C)
Hindmarsh Island AWS 14.5 -0.7 18.7 9th 7.4 -0.6 1.3 20th 55.2 48.5 average 114%
Kuitpo Forest Reserve 11.4 -0.9 15.9 23rd 5.6 -1.1 0.6 20th 118.4 107.5 average 110%
Mount Barker 13.0 +0.1 17.2 4th 4.3 -0.2 -1.7 20th 100.2 107.0 average 94%
Mount Crawford (Mt Crawford AWS) 10.2 -0.7 13.9 9th 4.9 -1.0 1.2 20th 76.4 95.9 average 80%
Mount Lofty 8.5 -0.1 12.7 9th 3.9 -1.0 0.1 19th 154.2
Noarlunga 14.1 -0.7 17.6 23rd 7.6 -1.1 2.9 20th 28.6 60.0 low 48%
Parawa (Second Valley Forest AWS) 11.1 -0.5 14.1 23rd 6.2 -0.7 1.2 20th 109.0 125.7 average 87%
Victor Harbor (Encounter Bay) 14.8 -0.7 18.4 9th 6.0 -0.7 -2.5 20th 75.6 77.4 average 98%
Upper Murray Valley (district 24A)
Loxton Research Centre 15.6 -0.2 20.1 10th 3.7 -0.2 -3.9 20th 19.6 27.5 low 71%
Renmark Aero 15.9 -0.4 20.7 10th 3.2 -0.6 -5.3 20th 13.2 19.8 low 67%
Lower Murray Valley (district 24B)
Eudunda 12.4 -0.7 16.4 9th 4.5 -0.5 -1.6 20th 41.8 51.1 average 82%
Meningie 14.4 -0.6 17.2 23rd 6.3 -0.5 0.6 20th 75.0 61.8 high 121%
Murray Bridge (Pallamana Aerodrome) 14.8   18.0 5th 3.1   -4.6 20th 41.0 35.5 average 115%
Strathalbyn Racecourse 14.1 -0.9 17.9 9th 5.6 -1.0 -1.6 20th 59.2 51.5 high 115%
Murray Mallee (district 25A)
Karoonda 14.8 -0.8 19.0 5th 3.6 -1.2 -3.1 20th 27.9 35.0 average 80%
Upper Southeast (district 25B)
Keith 14.9 -0.1 20.0 17th 5.1 -0.4 -2.5 3rd 43.0 55.1 average 78%
Keith (Munkora) 14.4 -0.5 18.4 5th 4.3 -0.8 -3.2 3rd 46.6 53.4 average 87%
Lameroo (Austin Plains) 14.1 -0.5 18.4 5th 3.6 -0.7 -2.3 20th 39.0 31.7 average 123%
Lower Southeast (district 26)
Cape Jaffa (The Limestone) 13.3 -0.7 15.1 30th 7.2 -0.4 0.8 20th 64.8 79.8 average 81%
Coonawarra 13.0 -0.9 16.1 23rd 4.4 -0.7 -1.6 20th 56.4 79.4 low 71%
Mount Gambier Aero 12.6 -0.6 15.9 9th 5.1 -0.1 -0.2 20th 87.4 99.4 average 88%
Naracoorte Aerodrome 13.0 -1.1 15.4 23rd 4.7 -0.5 -1.4 3rd 49.2 55.5 average 89%
Padthaway South 13.4 -1.0 16.1 5th 4.7 -0.9 -3.1 3rd 59.4 61.1 average 97%
Robe Airfield 13.7 -0.9 15.9 23rd 6.5 0.0 0.6 15th 101.0 94.2 high 107%

Notes

The Monthly climate summary 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. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

A climate summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 9 am on Monday 3 August 2015. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

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.

The ACORN-SAT dataset is used for temperature area averages.

Further information

Media
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