Adelaide in autumn 2017: warmer and drier than average

Adelaide and the Hills had a drier than average autumn. Both days and nights in the Adelaide region were warmer than average for the season as a whole.

Drier than average

  • Autumn was drier than average throughout Adelaide and the Hills
  • Autumn rainfall totals around Adelaide ranged from 45% of average at Edinburgh RAAF to 97% of average at Adelaide (Kent Town)
  • April brought above average rainfall to many parts of Adelaide and the wettest day for the season was on 21 April: Williamstown recorded 48.2 mm in the 24 hours to 9am on 21 April
  • The wettest site for the season was at Uraidla in the Adelaide Hills, recording an autumn total of 217.2 mm

Warmer than average

  • Warmer than average days and nights in Adelaide's suburbs and in the Hills
  • Mean temperatures were much warmer than average in March and April, but closer to average in May
  • Mean maximum temperatures ranged from 0.6 °C above average at Noarlunga to 2.8 °C above average at Mount Lofty
  • Mean minimum temperatures equalled the autumn average at Parafield Airport, but ranged up to 2.1 °C warmer than average at Mount Barker
  • Adelaide's hottest autumn day was at the start of the season, reaching 38.6 °C at both Adelaide (Kent Town) and Parafield Airport on 1 March
  • The season ended with a clear, cold night: the coldest temperature recorded for the season around Adelaide was 1.5 °C at Mount Lofty on 31 May

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Extremes in autumn 2017
Hottest day 38.6 °C at Adelaide (Kent Town) on 1 Mar
38.6 °C at Parafield Airport on 1 Mar
Warmest days on average 24.7 °C at Parafield Airport
Coolest days on average 18.4 °C at Mount Lofty
Coldest day 8.5 °C at Mount Lofty on 28 May
Coldest night 1.5 °C at Mount Lofty on 31 May
Coolest nights on average 10.4 °C at Mount Lofty
Warmest nights on average 14.2 °C at Noarlunga
Warmest night 23.3 °C at Noarlunga on 20 Mar
Warmest on average overall 18.7 °C at Adelaide (Kent Town)
Coolest on average overall 14.4 °C at Mount Lofty
Wettest overall 217.2 mm at Uraidla
Driest overall 45.2 mm at Edinburgh RAAF
Wettest day 48.2 mm at Williamstown on 21 Apr
Strongest wind gust 80 km/h at Kuitpo Forest Reserve on 27 May




Summary statistics for autumn 2017
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
autumn
2017
Diff
from
average
Highest for
autumn
2017
Mean for
autumn
2017
Diff
from
average
Lowest for
autumn
2017
Total for
autumn
2017
Average
for
autumn
Rank of
autumn
2017
Fraction of
autumn
average
Adelaide (Kent Town) 23.9 +1.2 38.6 1 Mar 13.4 +0.7 4.8 31 May 123.8 127.5 average 97%
Adelaide Airport 23.2 +1.1 35.0 2 Mar 13.1 +1.1 4.1 10 May 58.6 110.4 low 53%
Edinburgh RAAF 24.4 +1.4 38.2 1 Mar 12.0 +0.2 2.7 31 May 45.2 100.7 low 45%
Kuitpo Forest Reserve 20.4 +0.7 34.7 1 Mar 11.8 +0.7 4.4 31 May 136.8 178.7 average 77%
Mount Barker 22.0 +1.4 36.0 1 Mar 10.6 +2.1 2.0 31 May 122.6 176.8 low 69%
Mount Crawford AWS 20.4 +1.3 34.4 1 Mar 11.3 +0.9 3.8 31 May 126.2 143.4 average 88%
Mount Lofty 18.4 +2.8 32.7 1 Mar 10.4 +0.9 1.5 31 May 182.0
Noarlunga 22.8 +0.6 36.3 1 Mar 14.2 +0.6 6.0 8 May 85.0 108.7 v low 78%
Parafield Airport 24.7 +1.9 38.6 1 Mar 11.9 0.0 2.2 31 May 54.2 109.4 v low 50%

Notes

The Seasonal climate summary, generally published on the first working day of each month, lists the main features of the weather in Adelaide 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 11 am on Thursday 1 June 2017. 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

Media
(03) 9669 4057
Enquiries