Wednesday, 2 January 2013 - Monthly Climate Summary for Canberra - Product code IDCKGC35R0
Canberra in December 2012: Warm end to the year
- Driest Decembr since 2006
- Above average maximum temperatures
- Coldest December night on record.
Canberra Airport recorded 37 mm of rain during December, below the historical average of 53.8 mm and the first drier than average December since 2006 (16.8 mm). There were five days of rain (average 8 days), with most of the rain associated with thunderstorm activity on the 23rd and 24th. Canberra Airport recorded 23.8 mm to 9am on the 24th, the wettest day since 12 October, with up to 34 mm recorded at Nicholls.
*Note: Some rainfall data missing at Canberra Airport.
Canberra Airport recorded an average maximum temperature of 27.6 °C during December, 1.5 °C above the historical average and the warmest December since 2009. Nine days reached at least 30 °C during the month, above the historical average of 7 days, with the warmest day reaching 34.1 °C on the 24th. Only two days were cooler than 20 °C (average three days), with the coolest day dropping to 18.2 °C on the 25th.
The average minimum temperature was 11.8 °C, 0.4 °C above the historical average. Eight nights dropped below 10 °C, close to normal for December, with seven nights reaching at least 15 °C, the most since 2009. The coldest night was the 6th, when temperatures fell to 0.3 °C; this is the coldest December night at Canberra Airport since records began in 1939, and substantially colder than the previous record of 1.1 °C, set on 18 December 1964. The average temperature was consequently 19.5 °C, 0.8 °C above the historical average.
|Extremes in December 2012|
34.2 °C at Tuggeranong (Isabella Plains) AWS on the 23rd|
|Warmest days on average||
27.6 °C at Canberra Airport|
|Coolest days on average||
17.6 °C at Mount Ginini AWS|
8.6 °C at Mount Ginini AWS on the 5th|
-0.9 °C at Mount Ginini AWS on the 5th|
|Coolest nights on average||
7.1 °C at Mount Ginini AWS|
|Warmest nights on average||
12.8 °C at Tuggeranong (Isabella Plains) AWS|
19.3 °C at Tuggeranong (Isabella Plains) AWS on the 2nd|
|Warmest on average overall||
20.0 °C at Tuggeranong (Isabella Plains) AWS|
|Coolest on average overall||
12.5 °C at Mount Ginini AWS|
71.2 mm at Mount Ginini AWS|
61.0 mm at Nicholls (Gungahlin Lakes)
34.0 mm at Nicholls (Gungahlin Lakes) on the 24th|
|Highest wind gust||
80 km/h at Mount Ginini AWS on the 5th|
80 km/h at Mount Ginini AWS on the 15th
|Summary statistics for December 2012|
|Mount Ginini AWS||17.6||24.9||23rd||7.1||-0.9||5th||71.2|
|Tuggeranong (Isabella Plains) AWS||27.2||34.2||23rd||12.8||2.2||6th||20.0|
As of March 2010, the official station for Canberra is 70351 'Canberra Airport'. Averages from the previous site, 70014 Canberra Airport Comparison, are used for comparisons (all years of record).
A Monthly Climate Summary is prepared to list the main features of the weather in ACT Monthly Summary 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.
This statement has been prepared based on information available at 9 am on Wednesday 2 January 2013. Some checks have been made on the data, but it is possible that results will change as new information becomes available.
Averages 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 20 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
(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.