Canberra in August 2013: A warm, dry end to winter

  • Driest August since 2008
  • Equal-sixth-warmest August for maximum temperatures

Rainfall

Canberra Airport recorded 27 mm of rain during August, well below the historical average of 46.2 mm and the driest August since 2008. There were ten rain days, close to average for winter (11 days), with the wettest days reaching 5.2 mm on the 7th and 8.2 mm on the 30th. Conditions were dry across most of the ACT, with the exception of Mt Ginini which recorded 112.2 mm, its wettest August since 2010.

Temperature

Canberra Airport recorded an average maximum temperature of 14.8 °C during August, 1.8 °C above the historical average and the equal-sixth-warmest on record. No days dropped below 10 °C during the month (average 4 days), the first August without cool days since 2009 and only the sixth such August on record, although eight days dropped to 12 °C or lower, close to normal for August (11 days). The month ended with a warm spell, with five consecutive days above 18 °C between 27 and 31 August, the first such warm spell since 26-31 August 2007.

The average minimum temperature was 2.4 °C, 1.4 °C above the historical average. Only eight nights dropped below 0 °C during the month (average 13 nights), the fewest since 2007. In comparison, eight nights reached at least 5 °C (average 5 nights), with the warmest night reaching 9.4 °C on the 30th. The mean temperature was consequently 8.6 °C, 1.6 °C above the historical average.

Further information

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Extremes in August 2013
Hottest day 20.8 °C at Canberra Airport on the 28th
Warmest days on average 14.8 °C at Canberra Airport
Coolest days on average 4.0 °C at Mount Ginini AWS
Coldest day -3.8 °C at Mount Ginini AWS on the 20th
Coldest night -6.5 °C at Mount Ginini AWS on the 20th
Coolest nights on average -2.2 °C at Mount Ginini AWS
Warmest nights on average 2.6 °C at Tuggeranong (Isabella Plains) AWS
Warmest night 9.4 °C at Canberra Airport on the 30th
Warmest on average overall 8.6 °C at Canberra Airport
Coolest on average overall 0.9 °C at Mount Ginini AWS
Wettest overall 112.2 mm at Mount Ginini AWS
Wettest day 11.6 mm at Mount Ginini AWS on the 23rd
Highest wind gust 91 km/h at Mount Ginini AWS on the 12th

Summary statistics for August 2013
Maximum temperatures
for August
(°C)
Minimum temperatures
for August
(°C)
Rainfall
for August
(millimetres)
Mean for
August
2013
Diff
from
average
Highest for
August
2013
Mean for
August
2013
Diff
from
average
Lowest for
August
2013
Total for
August
2013
Average
for
August
Rank of
August
2013
Fraction of
August
average
Canberra Airport 14.8 +1.8 20.8 28th 2.4 +1.4 -3.1 9th 27.0 46.2 low 58%
Mount Ginini AWS 4.0   11.7 28th -2.2   -6.5 20th 112.2
Tuggeranong (Isabella Plains) AWS 14.3   20.2 28th 2.6   -3.9 11th 30.2

Notes

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.

A Monthly Climate Summary is prepared to list 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, usually published in the fourth week of the month.

This statement has been prepared based on information available at 8 am on Monday 2 September 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 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 being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.

Further information

Media
(03) 9669 4057
Enquiries