Adelaide in December 2014: A dry and mild end to the year

Mean maximum and minimum temperatures tended below average across the Adelaide region during December. The month began with generally mild days and warm nights, although daytime temperatures increased and became warmer than average by the end of the second week ahead a trough of low pressure that crossed South Australia. Temperatures cooled in the wake of the trough before becoming warm to hot by the end of the third week in a north to north-westerly airstream. The remainder of December saw temperatures tend generally below average.

December was very dry across the Adelaide region, with just 6.4 mm of rainfall recorded on 6 rain days, resulting in the driest December since 1991 when 5.8 mm was observed. The long-term average rainfall for Adelaide during December is 28 mm (with a median of 38 mm) typically recorded over about 7 rain days. The lack of significant rainfall resulted in several locations having their lowest total December rainfall for at least 20 years. The heaviest rainfall was recorded on the 11th as a band of thundery showers produced rainfall totals of 3-5 mm across most locations.

  • Adelaide's driest December in 23 years
  • Adelaide's coolest December days in 4 years
  • Adelaide's coolest December nights in 6 years

Further information

Media
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Extremes in December 2014
Hottest day 37.5 °C at Edinburgh RAAF on the 21st
Warmest days on average 27.2 °C at Parafield Airport
Coolest days on average 21.5 °C at Mount Lofty
Coldest day 16.1 °C at Mount Lofty on the 29th
Coldest night 6.3 °C at Mount Barker on the 26th
Coolest nights on average 10.6 °C at Mount Lofty
Warmest nights on average 15.4 °C at Adelaide (Kent Town)
Warmest night 22.6 °C at Adelaide (Kent Town) on the 22nd
Warmest on average overall 21.2 °C at Adelaide (Kent Town)
Coolest on average overall 16.0 °C at Mount Lofty
Wettest overall 22.0 mm at Balhannah (Killara Park)
Driest overall 2.2 mm at Belair
Wettest day 12.6 mm at Eden Valley (Mt Adam) on the 11th
Strongest wind gust 85 km/h at Mount Crawford (Mt Crawford AWS) on the 16th

Lowest December total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Years since
lower
Average for
December
Adelaide Airport 4.2 2.9 in 1963 51 23.4
Adelaide (Seaton) 2.8 2.1 in 1963* 49 25.3
Adelaide (Kent Town) 6.4 5.8 in 1991 23 28.0
Blackwood (Wittunga) 8.2 5.8 in 1991* 22 32.1
North Adelaide 5.6 4.4 in 1991* 22 27.4
Parafield Airport 5.4 3.8 in 1991* 21 24.5
Adelaide (Morphett Vale) 6.0 2.8 in 1975* 20 25.4
Happy Valley Reservoir 8.8 8.0 in 1994 20 29.1

* note: there are gaps in the historical record at this site, so it is possible a lower value has gone unreported.




Summary statistics for December 2014
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
December
2014
Diff
from
average
Highest for
December
2014
Mean for
December
2014
Diff
from
average
Lowest for
December
2014
Total for
December
2014
Average
for
December
Rank of
December
2014
Fraction of
December
average
Adelaide (Kent Town) 27.0 -0.1 36.1 21st 15.4 -0.2 10.2 26th 6.4 28.0 v low 23%
Adelaide Airport 25.0 -0.7 34.8 13th 14.9 +0.4 10.7 26th 4.2 23.4 v low 18%
Edinburgh RAAF 27.1 -0.7 37.5 21st 13.9 -0.9 9.1 17th 7.2 24.4 low 30%
Kuitpo Forest Reserve 23.2 -0.4 33.1 21st 12.0 -0.5 7.7 26th 17.2 33.2 low 52%
Mount Barker 25.3 +0.2 35.8 21st 11.2 +0.8 6.3 26th 20.4 34.7 average 59%
Mount Crawford (Mt Crawford AWS) 24.6 -0.2 34.1 21st 11.6 -0.4 7.1 26th 12.8 32.5 low 39%
Mount Lofty 21.5 +2.1 30.9 21st 10.6 +0.1 6.5 26th 15.6
Noarlunga 25.3 -0.9 34.4 13th 14.8 -0.4 9.6 26th 8.8 19.3 low 46%
Parafield Airport 27.2 -0.5 36.6 21st 14.2 -0.6 8.8 26th 5.4 24.5 v low 22%

Daily maximum temperatures for December 2014
12345678910111213141516171819202122232425262728293031
Adelaide (Kent Town)24.629.332.825.324.623.725.329.532.323.425.831.135.928.629.024.424.423.723.930.336.126.023.824.323.523.425.930.423.023.728.1
Adelaide Airport22.427.530.022.622.723.523.824.726.921.725.529.634.824.624.623.122.323.121.930.634.025.422.922.822.722.523.025.621.923.124.9
Edinburgh RAAF24.630.232.225.925.025.124.726.531.323.426.630.035.927.729.224.524.724.323.730.837.525.423.724.323.723.726.430.423.324.329.7
Kuitpo Forest Reserve21.025.528.221.821.518.220.421.529.319.219.626.631.625.924.920.320.620.521.628.633.122.620.222.119.218.323.827.218.121.225.2
Mount Barker23.726.032.025.018.821.823.131.519.521.627.433.727.326.623.023.523.423.330.035.823.120.523.721.920.625.830.521.824.429.5
Mount Crawford (Mt Crawford AWS)21.426.329.423.923.319.922.324.729.922.622.827.531.427.629.120.321.320.422.729.434.125.620.523.019.819.826.128.619.720.928.7
Mount Lofty18.725.025.820.320.517.019.022.826.519.919.029.124.025.617.318.017.219.625.730.925.217.820.016.917.621.824.916.117.224.2
Noarlunga23.327.130.622.923.222.924.325.829.622.223.129.934.425.628.222.022.222.621.830.433.925.822.323.122.322.324.426.221.922.626.1
Parafield Airport24.630.132.325.525.024.525.327.331.724.027.030.735.828.629.124.823.724.523.831.136.625.924.224.223.924.726.430.923.624.829.5
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 2014
12345678910111213141516171819202122232425262728293031
Adelaide (Kent Town)17.514.320.618.317.516.415.815.914.919.115.913.916.719.714.814.411.913.511.212.917.222.617.712.712.610.211.513.316.316.212.1
Adelaide Airport17.412.419.018.217.316.216.016.013.017.216.313.315.920.014.212.611.716.311.611.915.421.318.111.312.410.712.611.414.816.311.8
Edinburgh RAAF17.613.520.517.913.715.715.513.012.515.714.115.014.618.713.812.29.111.710.911.615.120.118.210.610.89.99.110.713.516.510.5
Kuitpo Forest Reserve13.211.917.214.913.512.312.613.412.112.912.79.314.414.311.310.89.010.69.510.613.814.413.910.59.77.79.511.113.412.39.9
Mount Barker14.713.115.415.313.012.813.012.913.013.09.311.016.311.48.76.99.07.89.010.914.710.07.56.37.88.214.012.57.8
Mount Crawford (Mt Crawford AWS)12.810.716.413.912.311.711.412.111.113.711.28.814.717.410.111.28.010.19.09.015.419.614.28.49.37.17.910.111.411.49.1
Mount Lofty11.510.015.112.610.910.810.211.310.113.59.97.715.69.311.47.49.78.28.714.017.412.78.68.66.57.19.511.710.28.3
Noarlunga16.414.819.217.617.115.515.414.715.316.915.612.818.018.413.913.210.812.711.213.017.718.217.311.511.69.612.314.516.215.111.6
Parafield Airport17.212.920.818.215.015.415.012.913.517.014.914.014.918.914.312.910.311.810.412.214.621.917.910.710.58.811.111.415.116.310.0
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 2014
12345678910111213141516171819202122232425262728293031
Adelaide (Brighton) - 0.2 - - - - - - - 0.4 2.2 - - - - - - - - - - - 2.0 - - - - - 1.4 - -
Adelaide (Hope Valley Reservoir)









4.0










1.2





1.6 -
Adelaide (Kent Town) - - - - - - - - - - 3.0 - - 0.4 - - - - - - - - 1.4 0.2 - - - - 1.2 0.2 -
Adelaide (Keswick) - - - - - - - - - - 1.8 - - 0.6 - - - - - - - - 2.0 - - - - - 2.4 - -
Adelaide (Morphett Vale)









6.0



















Adelaide (Salisbury Bowling Club)









4.0



















Adelaide (Seaton)









2.8



















Adelaide Airport - - - - - - - - - - 1.4 - - 0.2 - - - - - - - - 1.2 - - - - - 1.4 - -
Ashton - 0.2 - - - 1.6 1.0 0.8 - 0.2 4.8 0.2 - - 0.2 - - - - - - - 1.2 - - - - - 2.4 2.0 -
Ashton Co-op 0.2 0.2 - - - 2.8 - - 4.6 - - 0.4 - - - - - - - 1.2







Athelstone (Black Hill) - - - - - - - 0.2 - - 4.4 - - 0.4 - - - - - - - - 1.0 - - - - - 1.0 0.2 -
Balhannah (Killara Park) - - - - - 10.2 2.4 1.4 - - 3.0 0.2 - - - - 0.2 - - - - - 1.2 - - 0.8 0.2 - 1.2 1.2 -
Beaumont - - - - - - - - - - 2.4 - - - - - - - - - - - 1.6 - - - - - 1.2 0.2 -
Belair - - 0.2 - - - - - 0.2 - - - 0.2 - - - - - - - - - - - 0.2 - - - 0.8 0.6 -
Belair (St Johns) - - - - - - 0.2 0.6 - - 2.4 - - - - - - - - - - - 2.0 - - - - - 1.2 0.6 -
Bellevue Heights - - - - - 0.2 0.4 0.2 - - 2.4 - - - - - - - - - - - 1.6 0.2 - - - - 1.0 - 0.2
Birdwood (McVitties Hill) - - - - - 2.8 2.6 0.2 0.2 - 5.8 0.2 - 0.8 - - - - - - - - 0.8 - - - - - 0.2 0.6 -
Blackwood (Wittunga)




1.0


3.0










1.8




2.2 0.2
Brownhill Creek (Scotch College) - - - - - - - - - - 1.8 - - - - - - - - - - - 1.6 - - - - - 2.2 - -
Burnside - - - - - - - - - - 2.6 - - 0.4 - - - - - - - - 1.6 - - - - - 2.0 - -
Charleston - - - - - 0.4 0.4 0.4 - - 5.2 - - - - - - - - - - - 0.2
- 0.2 0.2
0.4 1.4 -
Crafers (Mt Lofty) 0.6 0.2 - - - 1.2 1.0 0.6 - - 4.2 - - 0.2 - - - - - - - - 2.0 - - - - - 5.0 1.0 0.4
Crafers West 0.6 0.2 - - - 0.8 0.4 0.6 - - 4.6 - - - - - - - - - - - 2.2 - - - - - 3.4 1.0 0.2
Cudlee Creek (Millbrook Reservoir)





0.6 0.6

5.6










0.6





1.4 -
Cudlee Creek (O'Deas Road) - - - - - - 0.4 0.4 - - 6.2 - - 0.2 - - - - - - - - 0.4 - - - - - 0.2 0.6 -
Dry Creek (Wingfield) - - - - - - - - - - 2.8 - - 0.6 - - - - - - - - 0.6 - - - - - - 0.2 -
Echunga - - - - - 4.2 0.6 - - - 3.4 - - - - - - - 0.2 - - - 1.4 - - 0.8 - - 1.4 1.4 -
Eden Valley (Mt Adam) - - 0.2 - - 0.6 1.0 - - - 12.6 - - 0.2 - - - - - - - - 2.4 - - - - - - - -
Edinburgh RAAF - - - - - - - - - - 6.6 - - - - - - - - - - - 0.4 - - - - - - - 0.2
Felixstow (Payneham) - - - - - - - - - - 3.0 - - 0.4 - - - - - - - - 0.8 - - 0.2 - - 0.6 0.2 -
Gawler - - - - - - - - - - 9.6 - - - - - - - - - - - 1.2 0.2 - - - - - - -
Greenacres - - - - - - - - - - 2.4 0.2 - 0.2 0.2 - - - - - - - 0.8 - - 0.2 - - 0.4 0.2 -
Happy Valley Reservoir 0.4



0.2
1.6

2.6










2.2





1.8
Heathfield Works Depot - - - - - 4.2 - - 4.0 - - - - - - - - - - - - - - - - - - 6.8
Ironstone Road - - 0.2 - - 0.4 - - - - 7.2 - - - - - - - - - - - 1.0 - - - - - - 0.4 -
Kangarilla (Saddlebags) 0.4 - - - - 2.6 0.4 0.6 - - 4.0 - - - - - - - - - - - 2.0 0.2 - - - - 2.0 0.6 -
Kersbrook - - - - - - 0.2 - - - 6.0 0.2 - 0.2 - - - - - - - - 0.4 - - - - - 0.2 1.2 -
Kilburn - - - - - - - - - - 2.6 - - 0.4 - - - - 0.2 - - - 0.8 - - - - - 0.6 - -
Kuitpo Forest Reserve 0.2 0.2 - - - 5.2 0.2 0.4 - - 5.6 - - 0.2 - - - - - - - - 1.6 - - 0.2 - - 2.8 0.6 -
Leawood Gardens (Eagle on The Hill) 0.4 - - - - 0.2 - 0.2 - - 3.0 - - - - - - - - - - - 2.0 - - - - - 4.0 0.6 -
Lenswood Research Centre - - - - - 7.4 - - 4.8 - - - - - - - - - - - 1.2 - - - 1.8 1.2
Lobethal






2.8 5.7



















Lobethal - - - - - 0.8 2.2 0.8 - - 6.2 - - 0.2 - - - - - - - - 0.2 - - 0.2 - - 0.2 2.2 -
Lobethal (Maidment Road) - - - - - 1.0 0.4 0.6 - - 6.0 - - 0.2 - - - - - - - - 0.4 - - - - - 0.2 1.4 -
Long Ridge (Greenhill) 0.2 - - - - 0.6 - - - - 3.6 - - 0.2 - - - - - - - - 2.0 - - - - - 2.4 0.8 -
Mallala









8.4










2.0







McLaren Vale (Pirramimma Winery) 0.2 - 0.8 - - 0.4 - - 5.4 - 2.0 - - - - - - - - 2.0

Melrose Park - - - - - - - - - - 1.8 - - - - - - - - - - - 1.0 0.2 - - - - 1.4 - -
Mitchell Park (Marion) - - - - - - 0.2 - - - 1.8 - - - - - - - - - - - 1.8 - - - - - 1.6 0.2 -
Montacute - - - - - 1.2 - - - - 4.4 - - - - - - - - - - - 0.4 - - - - - 0.8 0.2 0.2
Morphettville - - - - - - - - - - 1.4 - - - - - - - - - - - 1.0 0.2 - - - - 1.8 - -
Mount Barker - - - - 6.4 3.4 1.6 - 0.2 2.4 - - - - - - - - - - 2.4 0.2 - 1.0 - - 1.4 1.4 -
Mount Bold Reservoir 0.2



2.2 0.2 0.8

4.0










2.0

0.4


2.2
Mount Crawford (Mt Crawford AWS) - - 0.2 - - 1.4 0.2 0.2 - - 9.2 - - - - - - - - - - - 1.0 - 0.2 - - - - 0.4 -
Mount Lofty 0.2 0.6 - - - 1.0 1.0 0.4 0.2 - 4.0 -
- 0.2 - - - - - - - 2.0 - - - - - 4.6 1.0 0.4
Mt Bold (Scott Creek) 0.2 - - - - 1.8 0.4 0.4 - - 3.4 - - - - - - - - - - - 1.8 0.2 - - 0.2 - 2.0 0.6 -
Mylor (Biggs Flat) - - - - - 0.8 0.4 - - - 2.2 - - - - - - - - - - - 1.4 0.2 - - 0.2 - 1.4 1.0 -
Nairne -



1.4 3.8
0.2 3.0










1.2
1.8
1.0
Noarlunga - - 0.8 - - - 0.2 0.2 - - 5.2
- - - - - - - - - - 1.4 - - - - - 1.0 - -
North Adelaide - - - - - - - - - - 2.6 - - - - - - - - - - - - - - - - - - 3.0
Parafield Airport - - - - - - - - - - 3.6 - - - - - - - 0.8 - - - 0.6 - - - - - 0.2 0.2 -
Piccadilly (Woodhouse) - - - - - 1.6 1.0 0.2 - - - - - 0.4 - - - - - - - - - - - - - - 5.6 0.6
Regency Park



- - - - - - 2.2 - - 0.4 - - 0.2 - - - - - 1.4 - - - - - 0.2 - -
Sellicks Beach

1.8


0.6





1.0







1.2





0.6 -
Uraidla




2.0 2.0


6.0










2.0





6.0
Uraidla (Sutton Creek) - - - - - 2.2 0.6 0.6 - - 4.2 - - 0.4 0.2 0.2 - - - - - - 1.6 - - - - - 3.4 1.6 -
Verdun - - - - - 3.2 1.6 1.4 - 0.2 3.6 - - 0.2 - - - - - - - - 1.2 - - - - - 0.6 1.4 -
Williamstown

0.6

0.2
0.2
0.4 10.0










1.8





0.4
Williamstown (South Para Reservoir)








0.6 9.4

0.2







1.4





0.4
Willunga - - - - - 3.0 - - 5.0 - 1.2 - - - - - - - 2.0







Woodside




3.8

4.8










0.2





1.2
Woodside (Wicks Estate) - - - - - 0.8 1.2 0.6 - - 4.2 - - 0.2 - - - - - - - - 0.2 - - - - - 0.8 0.8 -
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

A Monthly 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 9 am on Tuesday 6 January 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
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Enquiries