Greater Adelaide in winter 2018: drier than average; mild days

Rainfall totals in winter were average to below average in Adelaide and the Hills. Both daytime and night time temperatures across Greater Adelaide were warmer than average.

Slightly drier than average

  • Rainfall in winter was slightly below average throughout Adelaide and the Hills
  • June and July were generally drier than average months for Greater Adelaide, but August rainfall totals were above average
  • Winter rainfall totals ranged from 69% of the long-term average at Edinburgh RAAF to 93% at Mount Lofty

Mild days

  • Daytime temperatures were warmer than average at all sites across Adelaide and Hills
  • Mean maximum temperatures ranged from 0.3 °C warmer than average at Mount Crawford to 1.1 °C warmer than average at Mount Barker and Mount Lofty
  • Night time temperatures were closer to average than daytime temperatures, but still above average at most sites
  • Warm northerly winds on the 30th resulted in some sites having their warmest winter night on record
  • Mean minimum temperatures ranged from 0.6 °C cooler than average at Rosedale to 1.0 °C warmer than average at Mount Barker

Adelaide (West Terrace / ngayirdapira)

  • Total rainfall for Adelaide (West Terrace / ngayirdapira) was 177.0 mm, which is 89% of the long-term average of 199.3 mm
  • The mean daily maximum temperature for Adelaide (West Terrace / ngayirdapira) was 16.3 °C, which is 0.7 °C above the long-term average of 15.6 °C. The warmest day was 25.4 °C on 29 Aug, and the coolest day was on 19 Jul when the temperature reached 12.2 °C
  • The mean daily minimum temperature for Adelaide (West Terrace / ngayirdapira) was 8.6 °C, which is 0.6 °C above the long-term average of 8.0 °C. The coldest morning was 2.9 °C on 28 Jun, and the warmest morning was on 30 Aug when the minimum temperature was 19.2 °C

Strong winds

  • The strongest wind gust recorded around Greater Adelaide in winter was 117 km/h at Mount Crawford on 17 July
  • July and August were particularly windy, with Adelaide Airport having its highest total wind run for August in at least 20 years

Further information

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Extremes in winter 2018
Hottest day 26.3 °C at Adelaide Airport on 29 Aug
Warmest days on average 16.7 °C at Parafield Airport
Coolest days on average 10.4 °C at Mount Lofty
Coldest day 5.5 °C at Mount Lofty on 6 Aug
Coldest night -1.5 °C at Mount Barker on 26 Jun
Coolest nights on average 5.2 °C at Rosedale (Turretfield Research Centre)
Warmest nights on average 9.2 °C at Noarlunga
Warmest night 20.0 °C at Noarlunga on 30 Aug
Warmest on average overall 12.5 °C at Adelaide (West Terrace / ngayirdapira) and Noarlunga
Coolest on average overall 7.9 °C at Mount Lofty
Wettest overall 479.1 mm at Uraidla
Driest overall 97.0 mm at Gawler
Wettest day 65.2 mm at Lenswood on 6 Aug
Strongest wind gust 117 km/h at Mount Crawford AWS on 17 Jul

Record highest winter daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
winter
Adelaide (West Terrace / ngayirdapira) 19.2 on 30 Aug 17.3 on 9 Jun 1919 94 8.0
Adelaide Airport 19.2 on 30 Aug 18.3 on 30 Aug 1993 64 7.4
Parafield Airport 18.4 on 30 Aug 16.4 on 25 Aug 1999 62 6.7
Adelaide (Kent Town) 19.4 on 30 Aug 18.4 on 30 Aug 1993 42 7.9



Summary statistics for winter 2018
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
winter
2018
Diff
from
average
Highest for
winter
2018
Mean for
winter
2018
Diff
from
average
Lowest for
winter
2018
Total for
winter
2018
Average
for
winter
Rank of
winter
2018
Fraction of
winter
average
Adelaide (Kent Town) 16.5 +0.5 25.9 29 Aug 8.2 +0.3 2.3 28 Jun 205.2 222.1 average 92%
Adelaide (West Terrace / ngayirdapira) 16.3 +0.7 25.4 29 Aug 8.6 +0.6 2.9 28 Jun 177.0 199.3 average 89%
Adelaide Airport 16.1 +0.5 26.3 29 Aug 8.3 +0.9 2.2 28 Jun 148.6 166.0 average 90%
Edinburgh RAAF 16.6 +0.7 26.1 29 Aug 6.8 +0.4 -0.2 26 Jun 108.8 156.9 low 69%
Kuitpo Forest Reserve 13.4 +0.4 22.6 29 Aug 7.1 +0.1 1.3 26 Jun 252.6 309.3 low 82%
Mount Barker 14.7 +1.1 21.3 29 Aug 5.9 +1.0 -1.5 26 Jun 279.2 309.6 average 90%
Mount Crawford AWS 12.0 +0.3 20.4 29 Aug 6.1 0.0 1.0 26 Jun 226.0 265.1 average 85%
Mount Lofty 10.4 +1.1 18.7 29 Aug 5.4 +0.2 0.0 26 Jun 402.4 431.7 average 93%
Noarlunga 15.8 +0.4 25.5 29 Aug 9.2 +0.3 3.8 13 Jul 156.4 182.1 low 86%
Parafield Airport 16.7 +0.9 26.2 29 Aug 6.8 +0.1 -0.7 28 Jun 136.6 166.3 low 82%
Rosedale (Turretfield Research Centre) 16.2 +0.8 25.2 29 Aug 5.2 -0.6 -1.2 11 Jul 122.8 173.5 low 71%

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 September 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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(03) 9669 4057
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