Greater Adelaide in December 2021: drier than average, hot days at times, some cool nights

Rainfall in December was very much below average throughout Adelaide and the Hills, with monthly rainfall totals below 10 mm in all suburbs. Mean maximum temperatures were generally close to average across Adelaide and the Hills, but it was a hot end to the month with daytime temperatures approaching 40 °C. Night-time temperatures were generally slightly cooler than the December average, but the month also ended with two warm nights.

Very much below average rainfall

  • Rainfall in December was very much below average throughout Adelaide and the Hills.
  • Monthly rainfall totals were below 10 mm in all suburbs.
  • Totals ranged from 2% of average at Mount Lofty to 16% of average at Mount Crawford.
  • Many sites had their driest December for at least 20 years, but it follows a wetter than average November.

Hot days at times, generally cool nights

  • Mean maximum temperatures were generally close to average across Adelaide and the Hills, but daytime temperatures approached 40 °C at the end of the month.
  • The highest temperature recorded in Greater Adelaide for the month was 40.6 °C at Edinburgh RAAF on the 31st.
  • Mean maximum temperatures ranged from 0.5 °C below average at Kuitpo Forest Reserve and Noarlunga to 2.2 °C above average at Mount Lofty.
  • Night-time temperatures were generally slightly cooler than the December average, but the month ended with two warm nights.
  • The lowest temperature recorded in Greater Adelaide during December was 5.3 °C at Mount Lofty on the 9th.
  • On the 9th, Mount Crawford AWS recorded a minimum temperature of 5.4 °C, the site's coldest night in December since 4.9 °C on 5 December 2013.
  • Mean minimum temperatures for December ranged from 1.4 °C below average at Edinburgh RAAF to 0.5 °C above average at Mount Barker.
  • A few sites had their lowest December mean daily minimum temperature since 2001.

Adelaide (West Terrace / ngayirdapira)

  • Total rainfall for Adelaide (West Terrace / ngayirdapira) was 1.8 mm, which is 7% of the long-term average of 26.0 mm.
  • The mean daily maximum temperature for Adelaide (West Terrace / ngayirdapira) was 27.3 °C, which is 0.4 °C above the long-term average of 26.9 °C.
  • The warmest day was 39.3 °C on the 31st, and the coolest day was on the 8th when the temperature reached 20.0 °C.
  • The mean daily minimum temperature for Adelaide (West Terrace / ngayirdapira) was 14.3 °C, which is 0.9 °C below the long-term average of 15.2 °C.
  • The coldest morning was 9.9 °C on the 4th, and the warmest morning was on the 30th when the minimum temperature was 24.4 °C.

Further information

Media
(03) 9669 4057

Extremes in December 2021
Hottest day 40.6 °C at Edinburgh RAAF on the 31st
Warmest days on average 28.8 °C at Parafield Airport
Coolest days on average 22.4 °C at Mount Lofty
Coldest day 13.8 °C at Mount Lofty on the 8th
Coldest night 5.3 °C at Mount Lofty on the 9th
Coolest nights on average 10.5 °C at Mount Lofty
Warmest nights on average 14.6 °C at Noarlunga
Warmest night 24.4 °C at Adelaide (West Terrace / ngayirdapira) on the 30th
Warmest on average overall 21.3 °C at Parafield Airport
Coolest on average overall 16.4 °C at Mount Lofty
Wettest overall 6.4 mm at Birdwood (McVittie's Hill)
Wettest day 4.6 mm at Ironstone Road on the 15th
Strongest wind gust 126 km/h at Sellicks Hill (Mount Terrible Radar) on the 31st

Lowest December mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
December
Adelaide Airport 14.5 13.2 in 2001 14.7
Edinburgh RAAF 13.5 12.1 in 2001 14.9
Parafield Airport 13.8 12.0 in 2001 14.9



Summary statistics for December 2021
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
December
2021
Diff
from
average
Highest for
December
2021
Mean for
December
2021
Diff
from
average
Lowest for
December
2021
Total for
December
2021
Average
for
December
Rank of
December
2021
Fraction of
December
average
Adelaide (West Terrace / ngayirdapira) 27.3 +0.4 39.3 31st 14.3 -0.9 9.9 4th 1.8 26.0 v low 7%
Adelaide Airport 26.2 +0.3 37.5 31st 14.5 -0.2 9.9 11th 1.0 23.3 lowest 4%
Edinburgh RAAF 28.3 +0.3 40.6 31st 13.5 -1.4 7.6 4th 0.8 24.3 v low 3%
Kuitpo Forest Reserve 23.5 -0.5 36.1 31st 11.7 -1.0 7.5 8th 2.4 33.7 lowest 7%
Mount Barker 26.1 +0.9 37.4 31st 11.0 +0.5 7.4 20th 3.8 34.7 v low 11%
Mount Crawford AWS 25.3 +0.1 36.0 31st 11.1 -1.1 5.4 9th 5.2 32.1 v low 16%
Mount Lofty 22.4 +2.2 33.5 31st 10.5 -0.3 5.3 9th 0.8 47.2 v low 2%
Noarlunga 26.1 -0.5 38.5 31st 14.6 -0.9 9.4 4th 1.0 20.2 lowest 5%
Parafield Airport 28.8 +0.9 39.8 31st 13.8 -1.1 8.0 4th 0.8 24.3 lowest 3%

Daily maximum temperatures for December 2021
12345678910111213141516171819202122232425262728293031
Adelaide (West Terrace / ngayirdapira)32.024.821.922.725.225.820.420.020.423.728.034.920.526.228.829.738.629.221.723.724.729.730.028.526.823.924.128.134.437.639.3
Adelaide Airport28.722.521.321.424.123.020.320.220.823.228.034.519.723.128.029.636.226.221.521.522.028.628.825.326.824.024.428.634.936.037.5
Edinburgh RAAF30.925.522.623.226.926.821.320.321.724.629.934.720.728.430.130.639.130.223.424.727.028.630.430.428.926.426.129.035.338.140.6
Kuitpo Forest Reserve30.123.320.518.322.923.817.414.915.617.425.031.518.525.321.127.234.025.918.721.024.322.223.428.120.517.618.421.628.234.436.1
Mount Barker30.225.223.520.823.727.019.017.517.520.827.732.219.828.324.529.734.530.321.525.028.926.027.231.524.620.821.425.431.435.237.4
Mount Crawford AWS29.625.323.019.923.425.417.816.216.920.126.231.418.829.424.027.833.828.318.723.626.627.128.430.323.221.020.924.630.834.736.0
Mount Lofty22.419.117.220.921.815.413.815.117.523.828.819.822.325.432.024.716.020.223.623.825.626.521.018.217.822.229.232.233.5
Noarlunga32.423.422.022.322.823.520.119.119.821.626.534.420.727.326.429.336.427.221.422.022.627.628.428.325.221.722.526.033.836.538.5
Parafield Airport32.726.923.623.527.727.821.921.121.825.230.835.522.528.030.431.039.430.723.325.327.029.930.930.828.726.025.929.935.638.439.8
Values are the maximum temperature, usually in the 24 hours from 9 am on the day indicated,
and typically occurred in the afternoon of that day.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily minimum temperatures for December 2021
12345678910111213141516171819202122232425262728293031
Adelaide (West Terrace / ngayirdapira)19.115.711.99.912.113.213.011.311.211.411.317.716.911.215.113.515.218.017.210.812.812.812.414.414.913.612.012.417.524.421.0
Adelaide Airport18.815.812.710.413.213.013.611.510.612.29.914.017.713.015.312.814.417.918.212.913.414.214.513.415.114.512.614.017.723.519.4
Edinburgh RAAF18.714.99.67.611.911.913.511.711.99.18.415.216.411.315.411.615.018.715.110.312.013.211.713.114.013.912.614.315.323.617.9
Kuitpo Forest Reserve17.111.310.28.110.110.99.97.58.58.88.713.814.110.011.711.115.814.313.09.210.512.011.711.612.611.09.08.912.716.021.1
Mount Barker16.012.410.77.610.59.09.78.67.79.07.69.114.09.912.29.010.215.012.67.411.112.711.810.813.211.59.28.611.518.314.8
Mount Crawford AWS20.212.88.37.18.012.08.95.85.47.07.513.415.49.110.710.315.614.514.68.510.710.89.811.710.58.67.48.112.717.422.2
Mount Lofty20.112.86.47.610.18.35.55.35.96.512.715.08.49.910.015.612.512.98.311.610.49.310.310.08.46.26.811.915.821.5
Noarlunga20.414.312.19.412.713.612.810.99.911.612.117.317.312.614.614.220.117.017.312.213.114.214.114.614.813.912.212.216.220.724.1
Parafield Airport17.315.49.98.012.611.712.610.311.19.011.316.115.912.215.313.817.418.116.09.612.813.613.713.712.812.512.014.118.223.618.0
Values are the minimum temperature, usually in the 24 hours to 9 am on the day indicated,
and typically occurred that morning.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily rainfall for December 2021
12345678910111213141516171819202122232425262728293031
Adelaide (Glen Osmond) - - - - - - - - - - - 0.8 0.4 - - - - - - - - - - - - -
Adelaide (Hope Valley Reservoir) - - - - - - - - - - - - - 1.6 1.0 - - - - - - - - - - - - - - - -
Adelaide (Keswick) - - - - - - 0.6 - - - - - - 0.2 1.4 - - - 0.8 - - - - - - - - - - - -
Adelaide (Morphett Vale) - - - - - - - - - - - - - - - - - - 0.8











Adelaide (Seaton)





0.4





1.4 1.8


1.4











Adelaide (West Terrace / ngayirdapira) - - - - - - 0.6 - - - - - - 0.6 0.2 0.2 - - 0.2 - - - - - - - - - - - -
Adelaide Airport - - - - - - 0.2 - - - - - - 0.4 0.2 - - - 0.2 - - - - - - - - - - - -
Adelaide Airport Alert - - - - - - 0.2 - - - - - - 0.4 0.2 - - - 0.2 - - - - - - - - - - - -
Aldgate - - - - - - 0.8 - - - - - 1.8 - 1.0 - - - - - - - - - - - - - - - -
Ashton - - - - - - 0.2 0.2 - - - - - 2.4 0.8 - - - - - - - - - - - - - - - -
Ashton Co-op - - - - - - 0.2 0.2 - - - - - 0.8
















Athelstone (Black Hill Alert) - - - - - - - - - - - - - 1.8 1.0 - - - - - - - - - - - - - - - -
Balhannah (Gumbooya) - - - - - - 0.4 0.2 - - - - - 1.8 1.0 0.2 - - - - - - - - - - - - - - -
Beaumont - - - - - - - - - - - - - 0.6 0.6 - - - - - - - - - - - - - - - -
Belair - - - - - - - - - - - - - 0.6 1.0 - - - 1.0 - - - - - - - - - - - -
Belair (St Johns) - - - - - - - - - - - - - 0.4 1.0 - - - 0.4 - - - - - - - - - - - -
Belair (State Flora Nursery) - - - - - - - - - - - - - 0.8 1.2 - - - 0.4











Bellevue Heights - - - - - - - - - - - - - 0.4 0.2 - - - 0.2 - - - - - - - - - - - -
Birdwood - - - - - - 0.4 - - - - - - 1.2 3.4 - - 0.4 - - - - - - - - - - - - -
Birdwood (McVittie's Hill) - - - - - - 1.0 - - - - - 0.2 1.0 4.2 - - - - - - - - - - - - - - - -
Bridgewater - -




























Brownhill Creek (Scotch College) - - - - - - - - - - - - - 0.6 1.4 - - - 1.2 - - - - - - - - - - - -
Burnside - - - - - - - - - - - - - 0.6 0.2 - - - - - - - - - - - - - - - -
Cherry Gardens - - - - - - 0.6 - - - - - - 0.6 - - - - 1.4 - - - - - - - - - - - -
Clarendon












1.0















Crafers West - - - - - - 0.2 0.2 - - - - - 0.8 1.4 - - - 0.6 - - - - - - - - - - - -
Cromer Road - - - - - - - 0.4 - - - - - - 0.2 0.2 - - - - - - - - - - - - - - -
Cudlee Creek (Millbrook Reservoir) - - - - - - - - - - - - - 1.2 1.6 - - 0.4 - - - - - - - - - - - - -
Cudlee Creek (Odea Road) - - - - - - 0.4 - - - - - - 1.6 3.6 - - - - - - - - - - - - - - - -
Edinburgh RAAF - - - - - - - - - - - - - 0.4 0.4 - - - - - - - - - - - - - - - -
Felixstow (Payneham) - - - - - - - - - - - - - 0.4 1.0 - - - - - - - - - - - - - - - -
Forreston Alert - - - - - - 0.2 - - - - - - 2.2 3.2 - - 0.2 - - - - - - - - - - - - -
Gawler - - - - - - 0.2 0.2 - - - - - 0.4 1.6 - - 0.4 - - - - - - - - - - - - -
Gould Creek (Hermitage) - - - - - - - - - - - - - 1.0 2.0 - - - - - - - - - - - - - - - -
Greenacres - - - - - - 0.2 0.2 - - - - - 0.8 1.0 - - - - - - - - - - - - - - - -
Gumeracha - - - - - - 0.4 - - - - - - 2.2 2.2 - - - - - - - - - - - - - - - -
Hahndorf - - - - - - 0.4 0.1 - - - - - 0.7 1.9 - - - 0.2 - - - - - - - - - - - -
Halbury Road Salisbury (Halbury Road) - - - - - - 0.2 - - - - - - 1.2 0.8 - - - - - - - - - - - - - - - -
Happy Valley Reservoir - - - - - - 0.4 - - - - - - 0.6 - - - 0.6












Harrogate (Mount Beevor South) - - - - - - - - - - - - - 1.0 3.0 - - - - - - - - - - - - - - - -
Inglewood - - - - - - - - - - - - - 1.0 1.2 - - - - - - - - - - - - - - - -
Ironstone Road - - - - - - - - - - - - - 1.2 4.6 - - 0.2 - - - - - - - - - - - - -
Kangarilla (Saddlebags) - - - - - - 1.6 - - - - - - 0.4 - - - 0.2 0.8 - - - - - - - - - - - -
Kanmantoo (Millbrae) - - - - - - - - - - - - - 0.8 1.4 - - - - - - - - - - - - - - - -
Kersbrook - - - - - - - - - - - - - 1.8 2.6 - - 0.2 - - - - - - - - - - - - -
Kilburn - - - - - - - - - - - - - 0.6 1.0 - - - - - - - - - - - - - - - -
Kuitpo Forest Reserve - - - - - - 0.6 0.6 - - - - - 0.4 0.2 - - - 0.6 - - - - - - - - - - - -
Lenswood - - - - - - 0.8 0.2 - - - - - 2.0 1.0 0.2 - - - - - - - - - - - - - - -
Lenswood (Stringybark) - - - - - - - - - - - - - 1.4 1.4 0.2 - 0.2 - - - - - - - - - - - - -
Lobethal (Graeber) - - - - - - 0.2 - - - - - - 1.4 1.8 - - - - - - - - - - - - - - - -
Lobethal (Maidment Road) - - - - - - 0.2 - - - - - - 1.6 3.4 - - - - - - - - - - - - - - - -
Long Ridge (Greenhill) - - - - - - - - - - - - - 0.6 0.4 0.2 - - - - - - - - - - - - - - -
Longwood Alert - - - - - - 0.4 - - - - - - 0.6 2.4 - - - 0.2 - - - - - - - - - - - -
Mitchell Park (Marion) - - - - - - - - - - - - - 0.4 - - - - - - - - - - - - - - - - -
Montacute - - - - - - - - - - - - - 1.6 1.2 - - - - - - - - - - - - - - - -
Morphettville - - - - - - 0.2 - - - - - - 0.4 - - - - 0.2 - - - - - - - - - - - -
Mount Barker - - - - - - 0.4 0.2 - - - - - 0.6 1.6 - - - 0.8 - - 0.2 - - - - - - - - -
Mount Bold Reservoir - - - - - - 0.8 - - - - - - 0.6 - - - 0.4












Mount Crawford AWS - - - - - - 0.2 - - - - - - 0.8 4.2 - - - - - - - - - - - - - - - -
Mount Lofty -

- - - 0.4 0.2 - - - - - 0.2
- - - - - - - - - - - - - - - -
Mt Bold (Scott Creek Alert) - - - - - - 0.4 0.4 - - - - - 0.6 - - - 0.2 1.2 - - - - - - - - - - - -
Mt Torrens - - - - - - 0.6 - - - - - - 2.4 3.2 - - - - - - - - - - - - - - - -
Mylor (Biggs Flat) - - - - - - 1.0 0.2 - - - - - 0.4 2.2 - - - 0.6 - - - - - - - - - - - -
Nairne - - - - - - 0.6 - - - - - - 1.2 1.2 - - 1.0












Noarlunga - - - - - - - 0.2 - - - - - - - - - - 0.6 0.2 - - - - - - - - - - -
North Adelaide - - - - - - - - - - - - - 0.5 0.6















Parafield Airport - - - - - - - - - - - - -
0.8 - - - - - - - - - - - - - - - -
Piccadilly (Woodhouse) - - - - - - 0.6 - - - - - - 1.0 1.0















Prospect Hill - - - - - - - 1.2 - - - - - 0.4 0.2 - - - 0.6 - - - - - 0.2 - - - - - -
Red Creek (Burwood) - - - - - - - - - - - - - - 1.6 - - - - - - - - - - - - - - - -
Regency Park - - - - - - - - - - - - - 0.4 0.6 - - - - - - - - - - - - - - - -
Rosslyn Park (Seaview) - - - - - - - - - - - - - 0.8 0.6 - - - - - - - - - - - - - - - -
Sellicks Beach






1.0









0.8











Uraidla













2.0















Uraidla (Sutton Creek) - - - - - - 0.2 0.2 - - - - - 0.4 1.8 - - - - - - - - - - - - - - - -
Verdun - - - - - - 0.6 0.4 - - - - - 1.0 1.8 - - - - - - - - - - - - - - - -
Williamstown - - - - - - - - - - - - - 1.6 2.0















Williamstown (South Para Reservoir) - - - - - - - - - - - - - 1.0 2.6 - - 0.4












Willunga - - - - - - - 0.6 - - - - - - - - - - - 1.2










Woodside (Inverbrackie) - - - - - - 0.8 - - - - - - 1.0 3.0 - - - - - - - 0.2 - - - - - - - -
Woodside (Wicks Estate) - - - - - - 0.2 - - - - - - 1.4 1.0 - - - - - - - - - - - - - - - -
Most values are the precipitation in the 24 hours to 9 am on the day indicated. Days marked with → are part of a longer accumulation, which is shown on the final day.
Values over 100 mm have been rounded to the nearest whole millimetre.
Days marked with - have a rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell).
Rainfalls coloured
according to the amount
0 1.0 5.0 10.0 15.0 25.0 50.0 100 150 200 300 400 600 millimetres

Notes

The Monthly 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 1 pm on Tuesday 4 January 2022. 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

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