Canberra in July 2013: Record warm July for Canberra

  • Warmest on record in Canberra for maximum and mean temperatures
  • Close to average rainfall
  • Fewest cool days on record, fewest cold nights since 1950

Rainfall

Canberra Airport recorded 42.8 mm of rain during July 2013, close to the historical average of 41.4 mm. Almost all of the rain fell during a spell of showers between the 15th and 21st, with heaviest falls reaching 9.4 mm on the 21st. Rain was recorded throughout the ACT during this event, with heaviest totals at Mt Ginini including 24.2 mm on the 21st, while Tuggeranong recorded 17 mm on the 20th. The rest of the month was generally dry, except for the 30th when 5.2 mm fell at Canberra Airport and 11.8 mm at Mt Ginini.

Temperature

The average maximum temperature at Canberra Airport was 13.4 °C, 2.0 °C above the historical average and the warmest July on record, just exceeding 13.2 °C reached in both 1993 and 1994. Minimum temperatures were also well above average at 1.7 °C, which was 1.8 °C above the historical average and the warmest since 2006. The mean temperature was consequently 7.5 °C, 1.8 °C above the historical average and the warmest on record, surpassing the previous record of 7.4 °C recorded in 1973 and 1993.

Only ten days dropped below 13 °C during the month (average 24 days), the fewest cool days on record, while eight days reached at least 15 °C (average 1-2 days). This included two consecutive days above 17 °C on 17 and 18 July, only the second such spell on record following 4 warm days on 28-31 July 1975.

There were also seven nights of at least 6 °C, equalling the record set in 1950, including three consecutive nights above 7 °C on 15-17 July. Only eight nights dropped to 0 °C or lower (average 17 nights), the fewest since 1950.

Further information

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Extremes in July 2013
Hottest day 17.4 °C at Canberra Airport on the 18th
Warmest days on average 13.4 °C at Canberra Airport
Coolest days on average 3.8 °C at Mount Ginini AWS
Coldest day -3.7 °C at Mount Ginini AWS on the 21st
Coldest night -6.0 °C at Canberra Airport on the 25th
Coolest nights on average -0.8 °C at Mount Ginini AWS
Warmest nights on average 1.7 °C at Canberra Airport
Warmest night 10.2 °C at Tuggeranong (Isabella Plains) AWS on the 16th
Warmest on average overall 7.5 °C at Canberra Airport
Coolest on average overall 1.5 °C at Mount Ginini AWS
Wettest overall 127.0 mm at Mount Ginini AWS
51.8 mm at Nicholls (Gungahlin Lakes)
Wettest day 24.2 mm at Mount Ginini AWS on the 21st
Highest wind gust 80 km/h at Mount Ginini AWS on the 5th


Summary statistics for July 2013
Maximum temperatures
for July
(°C)
Minimum temperatures
for July
(°C)
Rainfall
for July
(millimetres)
Mean for
July
2013
Diff
from
average
Highest for
July
2013
Mean for
July
2013
Diff
from
average
Lowest for
July
2013
Total for
July
2013
Average
for
July
Rank of
July
2013
Fraction of
July
average
Canberra Airport 13.4   17.4 18th 1.7   -6.0 25th 42.8 41.4 Average 103%
Mount Ginini AWS 3.8   7.4 3rd -0.8   -5.9 21st 127.0
Tuggeranong (Isabella Plains) AWS 12.7   16.5 18th 1.6   -5.2 25th 48.2

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 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 11 am on Thursday 1 August 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