Canberra in October 2013: Warm days, cold nights

  • Coldest October night on record, significant frost damage
  • Well above average maximum temperatures
  • Below average rainfall

Rainfall - Below average rain

Canberra Airport recorded 13.4 mm of rain during October, less than a quarter of the historical average (62.4 mm) and the driest October since 2006; this is the sixth-driest October on record for Canberra. There were only four rain days during the month (average 10 days); most of the rain fell associated with a trough and storms on the 22nd-23rd, with 10.8 mm at the airport and 23.4 mm at Mt Ginini.

Temperature - Warm days, cold nights

Canberra Airport recorded an average maximum temperature of 21.9 °C, 2.5 °C above the historical average and the equal-seventh-warmest October on record. There were 22 days with temperatures above 20 °C (average 13 days), while no days dropped below 15 °C (average 4 days). Temperatures reached 32.1 °C on the 21st, the equal-second-warmest October day on record for Canberra.

In contrast, the average minimum temperature was 3.8 °C, 2.3 °C below the historical average and the second-coldest October on record, following October 2012 (3.4 °C). There were five nights with temperatures of 0 °C or lower, the equal-highest on record (average 1 night). Three of these nights dropped below -2 °C, including the coldest October night on record with -3.4 °C on the 18th; no previous October has recorded more than one night so cold. The combination of earlier unseasonable warmth and accelerated growth with the October frosts resulted in severe damage to vineyards in the ACT.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in October 2013
Hottest day 32.1 °C at Canberra Airport on the 21st
Warmest days on average 22.0 °C at Canberra Airport
Coolest days on average 12.9 °C at Mount Ginini AWS
Coldest day 5.1 °C at Mount Ginini AWS on the 24th
Coldest night -5.0 °C at Mount Ginini AWS on the 14th
Coolest nights on average 1.9 °C at Mount Ginini AWS
Warmest nights on average 4.4 °C at Tuggeranong (Isabella Plains) AWS
Warmest night 15.5 °C at Canberra Airport on the 23rd
Warmest on average overall 13.1 °C at Tuggeranong (Isabella Plains) AWS
Coolest on average overall 7.4 °C at Mount Ginini AWS
Wettest overall 46.6 mm at Mount Ginini AWS
Wettest day 22.8 mm at Mount Ginini AWS on the 23rd
Highest wind gust 94 km/h at Mount Ginini AWS on the 1st

Summary statistics for October 2013
Maximum temperatures
for October
(°C)
Minimum temperatures
for October
(°C)
Rainfall
for October
(millimetres)
Mean for
October
2013
Diff
from
average
Highest for
October
2013
Mean for
October
2013
Diff
from
average
Lowest for
October
2013
Total for
October
2013
Average
for
October
Rank of
October
2013
Fraction of
October
average
Canberra Airport 21.9 +2.5 32.1 21st 3.8 -2.3 -3.4 18th 13.4 62.4 v low 21%
Mount Ginini AWS 12.9   22.0 21st 1.9   -5.0 14th 46.6
Tuggeranong (Isabella Plains) AWS 21.8   31.4 21st 4.4   -2.0 18th 12.0

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 9 am on Friday 1 November 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