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South Australia in May 2018: drier than average, close to average temperatures

Rainfall during May was generally below average across much of South Australia, continuing a run of five consecutive months of below average rainfall for the State as a whole. Daytime temperatures were close to average in most districts, while overnight temperatures were generally cooler than average in the north but warm across the Southeast.

Below average rainfall

  • Rainfall during May was 58% below average
  • Rainfall was generally below average across most of South Australia
  • The northern Pastoral districts received little or no rain during the month
  • Several cold fronts during the month brought rainfall totals close to average across the southeastern agricultural districts, including a small area of above average rainfall in the Lower Southeast
  • May continued a run of five consecutive months of below average rainfall for South Australia as a whole

Daytime temperatures close to average, cooler than average nights in the north

  • The mean temperature for South Australia as a whole was close to the May average, just 0.07 C cooler than average
  • Daytime temperatures were close to average throughout most of the State, with just a few isolated patches of above average mean maximum temperatures
  • The mean maximum temperature for South Australia as a whole was 0.42 °C warmer than average, well below the record-breaking heat of April but continuing a run of 13 consecutive months of warmer than average mean maximum temperatures for the State
  • Overnight temperatures were generally cooler than average in Pastoral districts but warmer than average in southern Agricultural districts
  • A complex low pressure system brought cold temperatures and rain to much of South Australia on the 11th
  • Severe weather warnings were issued for damaging winds and thunderstorms in parts of South Australia, including the Mount Lofty Ranges, Murraylands, Upper South East, Lower South East, and Kangaroo Island districts
  • Cape Jaffa recorded a maximum wind gust of 100 km/h on the morning of the 10th, the strongest at the site during May since at least 2003
  • On the morning of the 14th, cold air associated with a complex low pressure system resulted in minimum temperatures dropping below average and many sites across the State had their coldest night of the year so far
  • On the 14th, minimum temperatures were close to freezing in the Lower North and Upper Southeast districts, and below 5 °C across large areas of the State
  • Another cold front crossed southern parts of the State on the 15th, with the cold air behind the front resulting in overnight temperatures that were more than six degrees below average in parts of the Southeast
  • On the 30th, Nullarbor and Tarcoola Aero had their lowest May temperature on record, although the old Tarcoola site recorded a lower temperature of -1.7 °C on 27 May, 1937

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Extremes in May 2018
Hottest day 31.5 °C at Oodnadatta Airport on the 2nd
Warmest days on average 23.7 °C at Oodnadatta Airport
Coolest days on average 12.8 °C at Mount Lofty
Coldest day 8.6 °C at Mount Lofty on the 10th
Coldest night -1.2 °C at Keith (Munkora) on the 16th
Coolest nights on average 4.6 °C at Gluepot Reserve (Gluepot)
Warmest nights on average 14.3 °C at Neptune Island
Warmest night 19.3 °C at Oodnadatta Airport on the 3rd
Warmest on average overall 16.5 °C at Moomba Airport
Coolest on average overall 10.3 °C at Mount Lofty
Wettest overall 117.6 mm at Kalangadoo (Mirnat)
Driest overall 0 mm at Moomba Airport
Wettest day 48.0 mm at Uraidla on the 4th
Strongest wind gust 100 km/h at Cape Jaffa (The Limestone) on the 10th

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



Record lowest May temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Nullarbor 0.5 on the 30th 1.0 on the 16th in 1996 31 9.0
Tarcoola Aero 0.0 on the 30th = 0.0 on the 29th in 2004 21 8.4



Summary statistics for May 2018
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
May
2018
Diff
from
average
Highest for
May
2018
Mean for
May
2018
Diff
from
average
Lowest for
May
2018
Total for
May
2018
Average
for
May
Rank of
May
2018
Fraction of
May
average
Northwest (district 16)
Andamooka 21.7 -0.7 30.1 2nd 9.8 -0.3 4.5 31st 11.2 15.7 average 71%
Coober Pedy Airport 22.1 0.0 30.9 2nd 9.2 -1.0 4.8 18th 2.8 9.9 average 28%
Ernabella (Pukatja) 21.7 -0.2 30.9 2nd 8.1 -0.3 2.1 14th 1.4 14.7 average 10%
Mount Ive 20.1   26.4 2nd 7.5   0.8 31st 21.1 25.4 average 83%
Roxby Downs (Olympic Dam Aerodrome) 21.8 -0.6 30.7 2nd 7.3 -1.0 1.9 18th 11.0 9.3 average 118%
Tarcoola Aero 22.0 -0.5 29.3 2nd 7.0 -1.4 0.0 30th 2.6 11.2 low 23%
Woomera Aerodrome 20.6 -0.1 29.8 2nd 9.0 -0.5 4.7 30th 12.4 18.0 average 69%
Far North (district 17)
Arkaroola 20.2 -0.1 26.5 3rd 6.4 -0.8 0.4 31st 5.6 17.6 average 32%
Leigh Creek Airport 21.2 +0.1 28.4 2nd 7.5 -1.4 2.1 31st 20.0 17.8 average 112%
Marree Aero 23.0 -0.4 30.5 2nd 7.6 -1.8 1.8 31st 5.4 7.5 average 72%
Moomba Airport 23.3 -0.6 31.2 3rd 9.7 -1.1 4.8 31st 0 10.3 lowest 0%
Oodnadatta Airport 23.7 +0.4 31.5 2nd 8.7 -1.2 3.3 31st 0 12.5 lowest 0%
Western Agricultural (district 18)
Ceduna AMO 20.7 -0.2 28.7 1st 7.9 -0.7 0.2 31st 15.8 32.5 low 49%
Cleve 19.0 0.0 27.2 2nd 10.3 +0.2 6.0 20th 17.2 40.5 low 42%
Cleve Aerodrome 18.9 -0.5 27.7 2nd 10.3 -0.2 5.4 31st 13.0 37.2 low 35%
Coffin Bay (Point Avoid) 19.0   23.7 26th 12.2   6.3 31st 40.8
Cultana (Defence) 19.6   27.7 2nd 9.5   5.6 17th 16.6
Cummins Aero 19.5 -0.4 27.9 2nd 8.8 -0.1 1.8 31st 39.2 38.8 average 101%
Elliston 20.0 +0.5 26.8 1st 10.6 +0.2 2.7 31st 47.6 52.0 average 92%
Kimba 19.1 -0.3 26.0 2nd 8.0 -0.4 2.5 30th 27.6 35.3 average 78%
Kyancutta 21.2 +0.1 27.6 2nd 7.3 -0.1 1.5 21st 18.0 31.8 low 57%
Minnipa Pirsa 20.0 -0.3 26.8 2nd 9.3 -0.6 4.9 30th 12.6 26.9 low 47%
Neptune Island 17.8 0.0 21.4 1st 14.3 +0.5 11.5 29th 14.4 53.6 v low 27%
North Shields (Port Lincoln AWS) 19.9 +0.3 28.1 2nd 11.0 +0.5 6.0 31st 23.8 42.1 average 57%
Nullarbor 21.1 -0.4 30.9 1st 7.9 -1.1 0.5 30th 15.8 29.8 low 53%
Port Augusta Aero 20.8 -0.9 28.5 2nd 8.6 -0.2 1.8 31st 16.0 17.0 average 94%
Whyalla Aero 19.5 -1.1 28.1 2nd 9.6 +0.7 4.1 31st 21.6 23.6 average 92%
Wudinna Aero 20.8 -0.1 28.3 2nd 7.9 -0.8 2.1 17th 18.0 23.0 average 78%
Upper North (district 19)
Hawker 19.9 -0.2 27.0 2nd 7.1 -0.1 2.0 11th 20.8 30.5 average 68%
Yongala 17.1 0.0 24.3 2nd 4.8 +0.2 0.0 17th 15.6 34.7 low 45%
Northeast (district 20)
Gluepot Reserve (Gluepot) 20.3 -0.3 26.0 2nd 4.6 -1.6 -1.0 17th 5.2 19.2 low 27%
Yunta Airstrip 19.2 -0.2 26.6 2nd 5.1 -0.7 -0.3 31st 2.0 11.4 low 18%
Lower North (district 21)
Clare High School 16.7 -0.5 25.1 2nd 6.9 +0.3 0.6 30th 60.4 52.9 average 114%
Port Pirie Aerodrome AWS 20.0   26.6 2nd 8.4   2.8 14th 29.0
Snowtown (Rayville Park) 19.4 -0.6 27.0 2nd 7.2 -0.2 0.9 30th 37.6 35.9 average 105%
Yorke Peninsula (district 22A)
Edithburgh 18.7 +0.2 29.1 2nd 11.2 +0.4 6.6 9th 33.2 43.4 low 76%
Kadina AWS 19.0 -0.6 25.8 2nd 8.3 -0.2 2.8 14th 11.8 40.3 v low 29%
Minlaton Aero 19.2 -0.3 27.1 2nd 9.7 -0.3 4.8 16th 26.4 38.8 low 68%
Stenhouse Bay 18.6 -0.1 24.9 2nd 12.4 +0.3 9.1 25th 53.8 51.7 average 104%
Warooka 18.3 -0.3 23.2 2nd 11.0 +0.5 7.5 30th 47.1 53.4 average 88%
Kangaroo Island (district 22B)
Cape Borda 16.9 -0.1 20.8 2nd 11.4 +0.1 6.4 16th 58.8 66.4 average 89%
Cape Willoughby 17.2 +0.2 24.0 2nd 12.9 +0.3 9.0 30th 60.4 61.4 average 98%
Kingscote Aero 18.5 -0.1 23.5 2nd 9.4 +1.5 3.7 1st 40.8 47.1 average 87%
Parndana Cfs AWS 17.0   24.9 2nd 9.5   4.6 14th 56.2
Adelaide Plains (district 23A)
Adelaide (Kent Town) 18.5 -0.5 26.8 2nd 10.9 +0.6 5.8 16th 67.8 60.9 high 111%
Adelaide (West Terrace / ngayirdapira) 18.6 0.0 26.6 2nd 11.5 +1.1 4.8 16th 62.4 68.0 average 92%
Adelaide Airport 18.6 0.0 25.6 2nd 11.4 +1.8 5.2 16th 29.4 53.5 low 55%
Edinburgh RAAF 18.8 -0.4 28.0 2nd 9.7 +0.4 2.7 16th 45.0 44.8 average 100%
Parafield Airport 19.1 +0.1 28.2 2nd 9.7 +0.3 2.1 16th 45.6 48.2 average 95%
Roseworthy AWS 19.1 -0.7 28.0 2nd 8.5 -0.2 1.5 16th 36.6 38.0 average 96%
County Light (district 23B)
Nuriootpa Pirsa 16.7 -0.8 25.2 2nd 6.9 -0.1 0.7 30th 41.6 47.0 average 89%
Rosedale (Turretfield Research Centre) 18.3 -0.4 27.4 2nd 7.6 -0.7 1.2 14th 48.0 53.0 average 91%
Mount Lofty Ranges (district 23C)
Hindmarsh Island AWS 18.4 -0.2 27.4 2nd 11.4 +0.9 6.3 16th 53.0 40.8 high 130%
Kuitpo Forest Reserve 15.4 -0.6 23.7 2nd 9.6 +0.2 5.9 16th 65.0 83.7 average 78%
Mount Barker 16.7 +0.1 24.1 2nd 8.7 +1.9 3.7 16th 75.4 87.3 average 86%
Mount Crawford AWS 14.4 -0.6 22.9 2nd 8.5 -0.1 3.4 16th 64.2 68.5 average 94%
Mount Lofty 12.8 +0.6 20.9 2nd 7.9 +0.1 2.9 16th 90.4 102.3 low 88%
Noarlunga 17.4 -1.1 22.8 26th 11.6 +0.1 5.9 16th 26.4 52.1 low 51%
Parawa (Second Valley Forest AWS) 14.8 -0.1 22.1 2nd 9.9 +0.3 6.9 30th 91.6 95.7 average 96%
Victor Harbor (Encounter Bay) 18.4 -0.3 25.9 2nd 10.2 +1.4 3.5 1st 67.0 59.9 average 112%
Upper Murray Valley (district 24A)
Loxton Research Centre 19.3 -0.3 25.7 2nd 6.5 0.0 0.9 25th 13.4 23.1 average 58%
Renmark Aero 19.8 -0.3 26.3 2nd 6.5 -0.1 0.1 17th 15.0 16.8 average 89%
Lower Murray Valley (district 24B)
Eudunda 17.0 0.0 24.8 2nd 7.9 +0.2 3.6 16th 25.0 45.2 low 55%
Meningie 17.8 -0.5 25.4 2nd 10.1 +1.2 3.6 16th 42.8 54.6 average 78%
Murray Bridge (Pallamana Aerodrome) 19.0 -0.3 28.0 2nd 8.4 +0.9 1.5 25th 25.8 29.6 average 87%
Strathalbyn Racecourse 18.2 -0.4 27.1 2nd 10.1 +0.9 3.4 16th 39.8 43.4 average 92%
Upper Southeast (district 25B)
Keith 18.2 -0.2 26.2 2nd 8.7 +0.9 0.0 16th 53.6 52.1 average 103%
Keith (Munkora) 18.2 -0.7 26.1 2nd 7.9 +0.8 -1.2 16th 40.8 40.3 average 101%
Lameroo (Austin Plains) 18.1 -0.6 25.8 2nd 7.4 +0.2 2.0 25th 28.6 28.8 average 99%
Lower Southeast (district 26)
Coonawarra 16.7 -0.5 24.8 2nd 8.6 +1.7 1.1 31st 82.2 55.3 high 149%
Mount Gambier Aero 16.2 +0.1 23.9 2nd 9.1 +1.7 2.8 31st 108.2 72.2 high 150%
Naracoorte Aerodrome 17.0 -0.8 24.8 2nd 8.7 +1.5 2.2 16th 48.2 41.1 average 117%
Padthaway South 17.0 -0.7 24.8 2nd 8.3 +1.3 0.4 16th 52.6 43.3 high 121%
Robe Airfield 17.3 -0.2 24.4 2nd 9.9 +1.2 1.1 25th 80.2 67.2 high 119%

Notes

The Monthly 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 Friday 1 June 2018. 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

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