Canberra in December 2015: Warmest December days since 2009

Canberra experienced its equal fifth-warmest December mean maximum temperatures on record. Night-time temperatures were average for December, associated with clear, dry conditions during the month.

  • Equal fifth-warmest mean maximum temperatures on record
  • Well below average rainfall

The mean maximum temperature was 3.2 °C above normal for Canberra Airport during December. This was the equal fifth-warmest December on record, and the warmest December for Canberra since 2009. There were 14 days with temperatures of 30 °C or higher during the month, twice the historical average, with 3 reaching at least 35 °C (average 1 day). In comparison, the mean minimum temperature was equal to the historical average.

There was 34.6 mm of rain recorded at the airport, well below the December average of 53.8 mm. The rain fell over 6 days (average 8 days), with the heaviest rain falling during thunderstorms on the evening of the 16th and the passage of a cold front on the 26th. Daily totals reached 30 mm at Nicholls for the 24 hours to 9 am on the 27th.

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Extremes in December 2015
Hottest day 37.0 °C at Canberra Airport on the 20th
Warmest days on average 29.3 °C at Canberra Airport
Coolest days on average 19.1 °C at Mount Ginini AWS
Coldest day 12.5 °C at Mount Ginini AWS on the 26th
Coldest night 1.0 °C at Mount Ginini AWS on the 12th
Coolest nights on average 8.0 °C at Mount Ginini AWS
Warmest nights on average 12.0 °C at Tuggeranong (Isabella Plains) AWS
Warmest night 20.0 °C at Tuggeranong (Isabella Plains) AWS on the 21st
Warmest on average overall 20.3 °C at Canberra Airport
20.3 °C at Tuggeranong (Isabella Plains) AWS
Coolest on average overall 13.5 °C at Mount Ginini AWS
Wettest overall 45.8 mm at Mount Ginini AWS
Driest overall 29.6 mm at Tharwa General Store
Wettest day 30.2 mm at Mount Ginini AWS on the 27th
Strongest wind gust 81 km/h at Mount Ginini AWS on the 1st

Summary statistics for December 2015
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
December
2015
Diff
from
average
Highest for
December
2015
Mean for
December
2015
Diff
from
average
Lowest for
December
2015
Total for
December
2015
Average
for
December
Rank of
December
2015
Fraction of
December
average
Canberra Airport 29.3 +3.2 37.0 20th 11.4 +0.0 3.8 12th 34.8 53.8 average 65%
Mount Ginini AWS 19.1 +1.5 26.6 20th 8.0 +1.0 1.0 12th 45.8 102.9 low 45%
Tuggeranong (Isabella Plains) AWS 28.6 +1.6 36.6 20th 12.0 -0.1 6.0 3rd 30.8 65.6 average 47%
Note: Observations for “Canberra Airport” are taken from the current site (Bureau number 070351), which opened in late 2008.
Comparisons are made against data from the previous site Canberra Airport Comparison (070014), which ran from 1939 to 2010.

Daily maximum temperatures for December 2015
12345678910111213141516171819202122232425262728293031
Canberra Airport35.023.226.829.832.032.728.828.230.631.627.426.127.732.230.327.030.233.636.337.027.924.925.426.228.722.024.024.730.232.434.0
Mount Ginini AWS23.113.417.019.320.823.519.717.418.619.915.716.917.821.719.917.920.924.325.526.617.315.614.216.817.912.513.715.920.623.624.9
Tuggeranong (Isabella Plains) AWS33.422.726.529.930.832.426.527.329.930.626.326.227.031.830.125.129.633.435.736.627.523.925.125.428.022.222.924.530.131.733.4
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 2015
12345678910111213141516171819202122232425262728293031
Canberra Airport10.412.06.67.88.111.215.716.817.212.210.83.87.36.512.413.110.413.615.416.219.314.013.610.99.211.411.06.49.29.411.4
Mount Ginini AWS9.83.11.86.69.411.310.910.610.99.19.01.02.57.710.59.66.39.514.915.811.97.45.35.84.58.03.01.16.810.512.2
Tuggeranong (Isabella Plains) AWS10.012.16.010.59.110.816.418.018.112.410.56.312.26.410.613.610.713.715.314.920.014.714.512.39.812.511.97.510.110.311.7
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 2015
12345678910111213141516171819202122232425262728293031
Canberra (Australian National Botanic Ga - 0.8 - - - - - - 0.2 - - - - - - - 4.8 - - - - 0.4 - 4.2 - - 23.0 - - - -
Canberra Airport - 1.4 - - - - - - 0.4 - - - - - - - 16.0 - - - - 0.2 - 0.8 - - 16.0 - - - -
Mount Ginini AWS - 0.2 - - - - - - 2.6 0.2 - - - - - - 7.6 - - - 3.8 - - 1.2 - - 30.2 - - - -
Nicholls (Gungahlin Lakes) - 1.4 - - - - - - - - - - - - - 4.2 - - - - 0.6 - - 1.0 - - 30.0 - - - -
Tharwa General Store - - - - - - - - - - - - - - - - 3.4 - - - - - - 1.6 - - 24.6



Torrens (Darke St) - 0.4 - - - - 1.0 - 0.2 - - - - - - - 9.2 - - - 0.6 - - 4.0 - - 18.2 - - - -
Tuggeranong (Isabella Plains) AWS - - - - - - - - - - - - - - - - 7.4 - - - 0.2 0.2 - 0.8 - - 22.2 - - - -
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

The Monthly climate summary lists the main features of the weather in Canberra 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.

A climate summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 8 am on Wednesday 6 January 2016. 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.

Observations for “Canberra Airport” are taken from the current site (Bureau number 070351), which opened in late 2008.
Comparisons are made against data from the previous site Canberra Airport Comparison (070014), which ran from 1939 to 2010.

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

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