Greater Adelaide in autumn 2019: warmer and drier than average

Rainfall in autumn was near-average to below average for Adelaide and the Hills, despite a wetter than average May. Daytime temperatures were warmer than average throughout Greater Adelaide and night-time temperatures were warmer than average for the season as a whole, but autumn ended with cool nights towards the end of May.

Drier than average despite a wet May

  • Autumn rainfall was near-average to below average across Greater Adelaide
  • Several rain events in May brought above average totals for the month, but March and April were both much drier than average
  • The wettest days for the season were during May, with 32.4 mm at Cudlee Creek on 8 May the highest daily total
  • The wettest site was Aldgate in the Adelaide Hills, recording 228.1 mm for the season
  • Rainfall totals ranged from 62% of average at Rosedale to 94% of average at Mount Lofty and Kuitpo Forest Reserve
  • A much drier than average first five months of the year for Adelaide and the Hills

Warmer than average

  • Autumn was warmer than average throughout Adelaide and the Hills
  • Mean maximum temperatures were warmer than average in all suburbs, despite some cool days during May
  • Mean maximum temperatures ranged from 0.4 °C above average at Noarlunga to 2.3 °C above average at Mount Lofty
  • A very warm start to the season, with temperatures on 1 March over 40 °C in many suburbs and some sites having their highest autumn temperature on record
  • Night-time temperatures were warmer than average for the season as whole, but ended with cool nights at the end of May
  • Mean minimum temperatures ranged from 0.1 °C below average at Rosedale to 1.2 °C above average at Adelaide Airport
  • A warmer than average first five months of the year

Adelaide (West Terrace / ngayirdapira)

  • Total rainfall for Adelaide (West Terrace / ngayirdapira) was 94.2 mm, which is 69% of the long-term average of 135.8 mm
  • The mean daily maximum temperature for Adelaide (West Terrace / ngayirdapira) was 23.2 °C, which is 0.9 °C above the long-term average of 22.3 °C. The warmest day was 40.3 °C on 1 Mar, and the coolest day was on 9 May when the temperature reached 12.3 °C
  • The mean daily minimum temperature for Adelaide (West Terrace / ngayirdapira) was 13.5 °C, which is 0.7 °C above the long-term average of 12.8 °C. The coldest morning was 4.9 °C on 30 May, and the warmest morning was on 2 Mar when the minimum temperature was 29.3 °C

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Extremes in autumn 2019
Hottest day 42.3 °C at Edinburgh RAAF on 1 Mar
Warmest days on average 24.2 °C at Parafield Airport
Coolest days on average 18.2 °C at Mount Lofty
Coldest day 7.3 °C at Mount Lofty on 9 May
Coldest night 1.3 °C at Rosedale (Turretfield Research Centre) on 30 May
Coolest nights on average 10.3 °C at Mount Lofty
Warmest nights on average 14.1 °C at Noarlunga
Warmest night 31.3 °C at Noarlunga on 2 Mar
Warmest on average overall 18.5 °C at Adelaide (Kent Town)
Coolest on average overall 14.3 °C at Mount Lofty
Wettest overall 228.1 mm at Aldgate
Driest overall 54.4 mm at Gawler
Wettest day 32.4 mm at Cudlee Creek (Odea Road) on 8 May
Strongest wind gust 94 km/h at Mount Crawford AWS on 24 Mar

Record highest autumn temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Adelaide (Kent Town) 42.2 on 1 Mar 41.9 on 6 Mar 1986 43 22.8
Mount Crawford AWS 37.6 on 1 Mar 36.9 on 17 Mar 2008 26 19.2
Kuitpo Forest Reserve 38.1 on 1 Mar 37.4 on 8 Mar 2008 22 19.7




Summary statistics for autumn 2019
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
autumn
2019
Diff
from
average
Highest for
autumn
2019
Mean for
autumn
2019
Diff
from
average
Lowest for
autumn
2019
Total for
autumn
2019
Average
for
autumn
Rank of
autumn
2019
Fraction of
autumn
average
Adelaide (Kent Town) 23.8 +1.0 42.2 1 Mar 13.3 +0.6 5.0 30 May 101.0 126.2 low 80%
Adelaide (West Terrace / ngayirdapira) 23.2 +0.9 40.3 1 Mar 13.5 +0.7 4.9 30 May 94.2 135.8 low 69%
Adelaide Airport 22.7 +0.6 39.3 2 Mar 13.2 +1.2 4.6 30 May 83.6 109.0 average 77%
Edinburgh RAAF 23.8 +0.7 42.3 1 Mar 12.7 +0.9 2.6 30 May 76.4 99.3 average 77%
Kuitpo Forest Reserve 20.6 +0.9 38.1 1 Mar 11.6 +0.4 4.7 10 May 164.6 175.2 average 94%
Mount Crawford AWS 20.4 +1.2 37.6 1 Mar 11.0 +0.5 3.6 10 May 107.2 140.4 low 76%
Mount Lofty 18.2 +2.3 35.8 1 Mar 10.3 +0.7 2.9 30 May 217.4 232.0 average 94%
Noarlunga 22.6 +0.4 40.0 1 Mar 14.1 +0.5 6.3 30 May 97.0 105.5 average 92%
Parafield Airport 24.2 +1.3 42.0 1 Mar 12.1 +0.2 2.0 30 May 72.8 108.3 low 67%
Rosedale (Turretfield Research Centre) 24.1 +1.0 41.0 2 Mar 10.7 -0.1 1.3 30 May 67.6 109.7 low 62%

Notes

The Seasonal climate summary, generally published on the first working day of each month, lists the main features of the weather in Greater 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 summary includes data from observing sites in or near the Greater Adelaide “Greater Capital City Statistical Area” (GCCSA). The Australian Bureau of Statistics designed the GCCSAs to “include the population within the urban area of the city, as well as people who regularly socialise, shop or work within the city, and live in small towns and rural areas surrounding the city. It is important to note that GCCSAs do not define the built up edge of the city. They provide a stable definition for these cities and are designed for the output of a range of social and economic survey data.

This statement has been prepared based on information available at 9 am on Monday 3 June 2019. 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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