Greater Adelaide in spring 2017: warm spring nights reported

Warmer than average daytime and night time temperatures were reported during spring across the Adelaide region, with a number of sites observing their warmest spring nights on record. Rainfall was close to average for most locations across Adelaide and the Hills.

Near average rainfall

  • Most sites across Adelaide reported near average to below average rainfall for spring 2017
  • Adelaide's wettest day was in early September, with Bridgewater in the Adelaide Hills recording 43.8 mm on 3 September
  • Spring rainfall totals ranged from 60 mm to 80 mm along the coast to up to 260 mm at Mount Lofty

Warm spring nights

  • Minimum temperatures were well above average during spring 2017, with several sites observing their highest spring mean daily minimum temperature on record
  • Adelaide (West Terrace / ngayirdapira) reported five consecutive nights over 20 degrees between 10 and 14 November, the city's equal-second longest warm spell of this type for spring (record is nine such nights at Kent Town in November 2009)
  • Kent Town reported three consecutive nights of over 24 °C from 20 to 22 November equalling the spring record set in 1987 (31 October to 2 November)
  • Maximum temperatures were also warmer than average throughout Adelaide and Hills
  • Mean maximum temperatures ranged from 0.8 °C warmer than average at Noarlunga to 2.8 °C warmer than average at Mount Lofty
  • Kent Town reported three consecutive days of 35 °C or more from 12 to 14 November, which was the city's equal-third longest hot spell of this type for spring behind the eight days of 35 °C or more during the exceptionally warm November in 2009 (8th to 15th)

Adelaide (West Terrace / ngayirdapira)

  • Total rainfall for Adelaide (West Terrace / ngayirdapira) was 89.2 mm, which is 71% of the long-term average of 126.1 mm
  • The mean daily maximum temperature for Adelaide (West Terrace / ngayirdapira) was 23.4 °C, which is 2.0 °C above the long-term average of 21.4 °C. The warmest day was 39.4 °C on 29 Nov, and the coolest day was on 4 Sep when the temperature reached 13.7 °C
  • The mean daily minimum temperature for Adelaide (West Terrace / ngayirdapira) was 13.2 °C, which is 2.0 °C above the long-term average of 11.2 °C. The coldest morning was 4.9 °C on 10 Sep, and the warmest morning was on 22 Nov when the minimum temperature was 26.7 °C

Further information

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Extremes in spring 2017
Hottest day 40.2 °C at Parafield Airport on 29 Nov
Warmest days on average 24.5 °C at Parafield Airport
Coolest days on average 17.7 °C at Mount Lofty
Coldest day 6.5 °C at Mount Lofty on 4 Sep
Coldest night 1.0 °C at Rosedale (Turretfield Research Centre) on 1 Oct
Coolest nights on average 8.9 °C at Mount Lofty
Warmest nights on average 13.4 °C at Noarlunga
Warmest night 27.1 °C at Noarlunga on 22 Nov
Warmest on average overall 18.6 °C at Adelaide (Kent Town)
Coolest on average overall 13.3 °C at Mount Lofty
Wettest overall 263.4 mm at Crafers (Mt Lofty)
Wettest day 43.8 mm at Bridgewater on 3 Sep
Strongest wind gust 104 km/h at Mount Crawford AWS on 3 Sep

Record highest spring mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Mount Barker 9.8 9.1 in 2000 116 7.3
Adelaide Airport 13.1 12.7 in 2000 62 10.8
Parafield Airport 12.1 11.9 in 1990 60 10.4
Edinburgh RAAF 11.7 11.5 in 2000 44 10.3
Adelaide (Kent Town) 13.3 = 13.3 in 2009 40 11.8



Record highest spring mean temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Adelaide Airport 18.0 = 18.0 in 2009 62 16.0
Parafield Airport 18.3 18.2 in 2009 60 16.2



Summary statistics for spring 2017
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
spring
2017
Diff
from
average
Highest for
spring
2017
Mean for
spring
2017
Diff
from
average
Lowest for
spring
2017
Total for
spring
2017
Average
for
spring
Rank of
spring
2017
Fraction of
spring
average
Adelaide (Kent Town) 23.9 +1.7 39.1 29 Nov 13.3 +1.5 4.7 10 Sep 116.0 131.0 average 89%
Adelaide (West Terrace / ngayirdapira) 23.4 +2.0 39.4 29 Nov 13.2 +2.0 4.9 10 Sep 89.2 126.1 low 71%
Adelaide Airport 22.9 +1.8 38.7 29 Nov 13.1 +2.3 3.9 10 Sep 84.0 106.4 average 79%
Edinburgh RAAF 23.8 +1.4 39.3 29 Nov 11.7 +1.4 3.0 10 Sep 87.4 109.8 average 80%
Kuitpo Forest Reserve 20.0 +1.0 36.3 29 Nov 10.6 +1.1 4.4 4 Nov 165.2 162.3 average 102%
Mount Barker 22.0 +2.5 36.0 13 Nov 9.8 +2.5 3.0 4 Nov 174.6 191.4 average 91%
Mount Crawford AWS 19.7 +1.1 34.9 29 Nov 9.8 +1.0 2.4 4 Nov 148.6 151.9 average 98%
Mount Lofty 17.7 +2.9 33.7 29 Nov 8.9 +1.4 1.4 4 Nov 254.8
Noarlunga 22.5 +0.9 38.7 29 Nov 13.4 +1.5 6.3 10 Sep 61.6 99.1 low 62%
Parafield Airport 24.5 +2.4 40.2 29 Nov 12.1 +1.7 3.4 10 Sep 79.0 110.6 low 71%
Rosedale (Turretfield Research Centre) 24.0 +1.9 39.0 29 Nov 9.7 +1.0 1.0 1 Oct 103.9 125.1 average 83%

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.

In September 2017 this summary was broadened to include 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 10 am on Friday 1 December 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