Melbourne in December 2014: Very warm nights

The month started with a very warm night, 21.1 °C at Melbourne Regional Office, about 8 °C above the average December minimum temperature. Warm nights continued for most of the first half of the month so the average minimum temperatures for December were one to two degrees warmer than normal at most stations. Daytime temperatures were close to average for December in most suburbs.

December rainfall was mixed, with some stations reporting very low amounts while others observed above average totals. Melbourne Regional Office observed 42.2 mm for the month, nearly 30% below the long-term average of 59.1 mm. Most of the rainfall for the city was recorded between the 4th and 8th as a trough of low pressure crossed Victoria. Overall, most stations around Melbourne reported close to average rainfall.

  • Night-time temperatures 1 °C to 2 °C above normal for December
  • Daytime temperatures close to normal
  • Close to normal rainfall in most suburbs.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in December 2014
Hottest day 35.0 °C at Viewbank on the 21st
Warmest days on average 25.9 °C at Bundoora (Latrobe University)
Coolest days on average 21.1 °C at Ferny Creek
Coldest day 13.3 °C at Ferny Creek on the 7th
Coldest night 3.4 °C at Coldstream on the 27th
Coolest nights on average 9.8 °C at Coldstream
Warmest nights on average 15.2 °C at Melbourne Regional Office
Warmest night 21.4 °C at Melbourne Regional Office on the 14th
Warmest on average overall 20.1 °C at Melbourne Regional Office
Coolest on average overall 16.3 °C at Ferny Creek
Wettest overall 72.6 mm at Cerberus
Driest overall 28.4 mm at Scoresby Research Institute
Wettest day 34.6 mm at Cerberus on the 7th
Strongest wind gust 96 km/h at Avalon Airport on the 29th

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
Avalon Airport 24.2 +0.1 33.4 16th 12.3 +0.7 6.4 27th 49.0 30.0 high 163%
Bundoora (Latrobe University) 25.9 +1.2 34.0 21st     8.2 19th 37.0 63.2 low 59%
Cerberus 21.8 -0.5 30.4 13th 12.8 +1.0 6.0 27th 72.6 53.9 high 135%
Coldstream 25.4 +0.5 33.0 16th 9.8 +0.2 3.4 27th 43.4 55.0 average 79%
Cranbourne Botanic Gardens 23.0 -0.3 31.0 21st 12.5 +0.9 8.5 18th 70.5 65.5 average 108%
Essendon Airport 25.0 +0.6 34.6 16th 13.3 +1.5 8.9 18th 37.4 51.0 average 73%
Ferny Creek 21.1   28.9 16th 11.5   7.0 17th 63.0
Laverton RAAF 23.7 -0.1 34.5 16th 13.0 +1.0 7.4 31st 46.0 45.9 average 100%
Melbourne (Olympic Park) 23.9   33.1 21st 14.8   10.8 26th 37.0
Melbourne Airport 24.9 +0.4 33.6 16th 12.8 +0.8 7.5 27th 39.2 48.3 average 81%
Melbourne Regional Office 25.0 +0.8 33.8 21st 15.2 +2.3 10.9 26th 42.2 59.1 average 71%
Moorabbin Airport 24.0 +0.2 31.9 21st 13.7 +1.1 9.9 18th 62.4 59.2 average 105%
Scoresby Research Institute     32.9 21st 13.4 +1.6 8.6 19th 28.4 75.3 low 38%
Viewbank 25.7 +0.3 35.0 21st 13.4 +0.9 9.0 18th 36.4 65.1 low 56%

Daily maximum temperatures for December 2014
12345678910111213141516171819202122232425262728293031
Avalon Airport28.026.722.227.120.320.917.220.020.520.021.224.632.924.623.133.422.225.020.724.630.623.028.321.825.421.022.229.826.823.522.7
Bundoora (Latrobe University)32.028.023.028.520.021.021.520.521.531.029.525.233.722.825.734.023.827.023.225.222.023.033.028.024.025.6
Cerberus21.721.421.525.118.920.416.019.119.019.019.724.730.421.320.728.118.722.818.220.128.924.923.219.721.118.119.427.824.720.620.5
Coldstream29.228.023.527.920.624.317.819.523.521.423.326.229.230.128.233.022.125.020.724.632.830.625.721.626.120.424.831.428.023.425.6
Cranbourne Botanic Gardens23.824.021.525.019.016.919.219.718.924.029.926.521.530.019.523.518.121.431.025.525.523.218.520.728.924.121.023.2
Essendon Airport28.626.623.827.120.323.617.921.521.520.321.126.730.726.524.434.622.525.420.324.034.225.127.822.125.119.922.932.329.025.025.6
Ferny Creek25.422.719.423.616.619.313.315.418.818.017.421.525.625.122.928.917.721.316.722.428.526.322.918.021.716.520.427.022.218.920.5
Laverton RAAF25.925.123.325.719.620.617.419.719.620.220.324.831.525.122.434.520.824.419.421.330.924.327.121.223.419.821.629.927.623.823.4
Melbourne (Olympic Park)28.124.323.925.620.422.717.820.119.020.019.826.630.725.122.932.321.624.819.322.533.123.626.521.323.018.921.132.026.223.425.3
Melbourne Airport28.727.222.526.820.022.017.320.121.520.320.725.830.726.925.133.622.524.419.724.533.325.428.721.925.919.923.333.428.624.226.3
Melbourne Regional Office29.326.123.927.721.422.917.921.821.721.322.127.831.526.224.232.622.724.621.123.833.825.226.823.024.121.123.032.126.424.625.8
Moorabbin Airport26.823.523.127.220.722.118.120.119.620.722.126.130.826.224.930.821.323.719.322.031.927.125.523.223.319.321.531.025.722.423.3
Scoresby Research Institute28.026.623.927.820.722.216.719.622.721.222.125.929.828.226.632.622.224.420.624.032.928.126.323.3
Viewbank30.028.123.728.521.123.817.721.922.421.422.527.530.928.626.433.323.025.321.025.535.028.126.824.725.420.624.432.727.224.325.7
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
Avalon Airport17.016.015.914.716.614.714.014.613.712.015.012.710.815.410.815.18.27.59.48.910.015.118.49.011.98.96.49.011.911.17.8
Bundoora (Latrobe University)15.517.514.814.514.510.515.011.512.013.514.38.89.08.216.819.612.611.310.010.210.615.310.58.7
Cerberus16.914.014.216.315.515.313.514.013.810.515.513.414.418.311.813.810.57.310.310.18.316.117.99.99.69.86.08.215.013.712.7
Coldstream18.216.013.314.815.215.613.714.28.76.913.07.77.510.99.011.63.83.86.46.05.811.018.67.36.79.03.46.28.34.07.7
Cranbourne Botanic Gardens19.113.013.715.014.512.512.912.39.915.012.110.516.913.514.59.88.510.59.49.315.518.010.59.28.59.614.113.510.5
Essendon Airport20.515.315.215.717.315.213.313.714.511.215.412.312.420.414.213.910.08.99.39.410.516.418.912.711.79.49.211.314.310.39.6
Ferny Creek18.912.712.713.714.512.310.510.79.910.212.610.613.117.211.213.57.09.77.38.211.314.016.79.09.87.17.111.217.17.38.8
Laverton RAAF18.915.615.816.216.615.114.014.314.511.015.915.211.717.215.815.18.19.09.88.19.916.818.912.710.59.57.59.912.710.37.4
Melbourne (Olympic Park)20.816.116.217.517.415.413.814.115.312.715.914.014.418.915.316.012.211.611.412.513.117.219.714.413.410.812.512.216.713.512.6
Melbourne Airport20.514.715.216.016.814.813.213.513.810.715.013.711.319.813.513.38.59.29.08.610.615.818.610.210.58.77.510.713.610.27.9
Melbourne Regional Office21.116.716.517.617.715.613.814.015.513.716.314.315.121.416.716.612.212.111.312.613.717.919.914.414.410.912.213.417.513.411.9
Moorabbin Airport19.513.514.916.216.714.813.313.714.111.814.611.711.815.713.616.012.69.913.412.011.916.318.712.311.611.610.410.715.013.613.9
Scoresby Research Institute20.915.914.216.416.114.713.513.313.710.615.110.110.220.712.714.58.89.58.69.59.216.019.610.110.4
Viewbank21.316.515.116.617.015.113.613.914.310.514.512.012.416.413.815.210.29.09.39.610.915.919.612.311.39.59.010.615.911.810.9
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
Avalon Airport - 0.4 - 18.0 0.2 9.2 9.6 2.0 - - - - - - - 1.2 - 2.0 - - - 1.6 0.2 - 3.4 - 0.2 - 0.6 0.4
Bundoora (Latrobe University) - - - 10.0 - 4.2 14.2 - - - 0.6 - - - - - - 2.6 - - - 0.7 - - 3.4 - - - 1.3 -
Cerberus - - - 2.4 - 2.2 34.6 4.6 - - 1.6 - - - - 3.0 1.6 - 8.6 - - - 1.8 - - 8.8 - - - 3.4 -
Coldstream - - - 3.0 - 2.6 15.0 0.2 - - 2.4 - - - - - - - 3.2 - - - 2.4 5.6 - 6.0 1.0 - - 2.0 -
Cranbourne Botanic Gardens - - - 12.0 4.0 22.0 3.2 0.4 - 0.2 - - - - 1.2 - - 7.0 - - - 0.6 - 15.5 0.4 - - 1.8 2.2
Essendon Airport - 0.2 - 8.8 - 3.0 13.8 1.2 - - 2.4 - - - - - - - 3.0 - - - 0.2 1.2 - 2.4 - - - 1.2 -
Ferny Creek 0.8 0.2 - 4.6 - 1.0 19.8 1.6 1.2 0.2 5.8 - 0.2 - - - - - 7.2 - - - 1.0 0.4 - 15.2 0.6 - - 1.4 1.8
Laverton RAAF - - - 15.6 - 2.4 13.2 5.2 0.2 - - - - - - - - - 3.6 0.2 - - 2.0 - - 1.8 0.2 - - 1.6 -
Melbourne (Olympic Park) - 0.4 - 9.0 - 2.6 14.8 2.2 - - 0.8 - - - - - - - 1.6 - - - 1.0 0.6 - 3.4 - - - 0.2 0.4
Melbourne Airport - 0.4 - 10.8 0.2 4.8 14.4 0.8 - - 1.2 0.2 - - - - - - 1.8 - - - 0.4 2.0 - 1.2 - - - 1.0 -
Melbourne Regional Office 0.4 0.2 - 9.2 - 3.0 15.2 2.4 - - 0.6 - - - - - - - 1.8 - - - 1.0 0.6 - 7.4 - - - 0.2 0.2
Moorabbin Airport - 0.4 - 17.8 - 5.2 14.4 1.4 0.2 - - - - - - - - - 9.4 - - - 0.2 - - 11.0 1.0 - - 0.8 0.6
Scoresby Research Institute - 0.2 - 5.0 - 1.8 14.8 1.4 - - 0.2 0.2 - - - - - - 4.6 - - - 0.2 - -





Viewbank - 0.4 - 8.2 - 2.0 13.2 1.0 0.2 - 0.4 - - - - - - - 4.2 - - - 1.2 0.2 - 4.0 - - - 1.2 0.2
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 Melbourne 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
(03) 9669 4057
Enquiries