Adelaide in autumn 2015: Cool with average rainfall

Cooler days and nights with average rainfall across the city.

  • Coolest autumn days in 16 years
  • Coolest autumn nights in 14 years
  • Dry start, but season finishes with above average rainfall

Despite a very dry start to the season during March, the autumn total rainfall for Adelaide was very close to the long term average, predominantly owing to a very wet April and average rainfall in May.

Overall, the season was cooler than average, with both maximum and minimum temperatures tending below average across the region. At Kent Town, daytime temperatures averaged 21.5°C, resulting in the coolest autumn days since 1999. Night time minimum temperatures averaged 11.9 °C across the season which resulted in the coolest autumn nights since 2001.

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Extremes in autumn 2015
Hottest day 34.2 °C at Edinburgh RAAF on 16 Mar
Warmest days on average 21.7 °C at Parafield Airport
Coolest days on average 15.5 °C at Mount Lofty
Coldest day 8.4 °C at Mount Lofty on 21 May
Coldest night 1.4 °C at Mount Barker on 23 May
Coolest nights on average 8.3 °C at Mount Lofty
Warmest nights on average 12.4 °C at Noarlunga
Warmest night 20.5 °C at Adelaide Airport on 17 Mar
Warmest on average overall 16.7 °C at Adelaide (Kent Town)
Coolest on average overall 11.9 °C at Mount Lofty
Wettest overall 313.0 mm at Uraidla
Driest overall 75.2 mm at Bellevue Heights
Wettest day 46.0 mm at Kuitpo Forest Reserve on 7 Apr
Strongest wind gust 135 km/h at Mount Crawford (Mt Crawford AWS) on 5 May

Lowest autumn mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Years since
lower
Average for
autumn
Edinburgh RAAF 21.5 21.0 in 1995 20 23.0
Parafield Airport 21.7 20.6 in 1995 20 22.8



Record lowest autumn mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Mount Crawford (Mt Crawford AWS) 9.1 9.3 in 1995 20 10.4



Lowest autumn mean temperature for at least 20 years
Observed
(°C)
Most recent
lower
Years since
lower
Average for
autumn
Mount Crawford (Mt Crawford AWS) 13.4 13.0 in 1995 20 14.8
Parafield Airport 16.2 15.6 in 1995 20 17.4



Summary statistics for autumn 2015
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
autumn
2015
Diff
from
average
Highest for
autumn
2015
Mean for
autumn
2015
Diff
from
average
Lowest for
autumn
2015
Total for
autumn
2015
Average
for
autumn
Rank of
autumn
2015
Fraction of
autumn
average
Adelaide (Kent Town) 21.5 -1.2 33.6 16 Mar 11.8 -0.9 4.6 23 May 132.0 127.0 average 104%
Adelaide Airport 20.7 -1.4 33.1 16 Mar 11.7 -0.2 3.7 17 May 102.4 111.1 average 92%
Edinburgh RAAF 21.5 -1.5 34.2 16 Mar 10.9 -0.9 3.0 17 May 120.4 101.6 high 119%
Kuitpo Forest Reserve 17.9 -1.8 30.4 16 Mar 10.0 -1.1 4.7 13 May 263.2 181.3 high 145%
Mount Barker 19.8 -0.8 32.4 16 Mar 8.8 +0.3 1.4 23 May 210.6 177.2 high 119%
Mount Crawford (Mt Crawford AWS) 17.6 -1.5 30.7 16 Mar 9.1 -1.3 3.3 13 May 145.2 141.1 average 103%
Mount Lofty 15.5 -0.1 28.6 16 Mar 8.3 -1.2 2.2 13 May 303.8
Noarlunga 20.3 -1.9 32.4 16 Mar 12.4 -1.2 5.9 20 Apr 134.6 110.9 average 121%
Parafield Airport 21.7 -1.1 33.7 16 Mar 10.8 -1.1 2.2 14 May 113.0 110.1 average 103%

Notes

A Seasonal Climate Summary is prepared to list 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. 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.

A Climate Summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 11 am on Monday 1 June 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
(03) 9669 4057
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