Australian Capital Territory in spring 2019: dry with warm days

Spring 2019 in the ACT was dry with warm days. Rainfall was well below average and maximum temperatures above average through the ACT. Minimum temperatures were slightly below average.

Rainfall well below average

  • Rainfall was well below average throughout the ACT, with most sites receiving about half their average spring rainfall
  • All three spring months saw generally below average rainfall, with November being the driest
  • Some sites had their lowest total spring rainfall on record

Warm days in spring

  • Spring maximum temperatures were well above average throughout the ACT, especially at lower elevations
  • Overnight minimum temperatures were slightly below average, with a cool September and near-average values in October and November

Canberra Airport

  • Total rainfall for Canberra Airport was 80.2 mm, which is 45% of the long-term average of 177.4 mm. This was the lowest spring rainfall since 2006
  • The mean daily maximum temperature for Canberra Airport was 23.1 °C, which is 3.4 °C above the long-term average of 19.7 °C. The warmest day was 39.0 °C on 21 Nov, and the coolest day was on 17 Sep when the temperature reached 11.3 °C. This was the second-highest spring mean maximum on record after 2006 (23.3 °C)
  • The mean daily minimum temperature for Canberra Airport was 5.9 °C, which is 0.1 °C below the long-term average of 6.0 °C. The coldest morning was -3.1 °C on 11 Sep, and the warmest morning was on 22 Nov when the minimum temperature was 16.9 °C

Further information

Media
(03) 9669 4057
Enquiries

Extremes in spring 2019
Hottest day 39.0 °C at Canberra Airport on 21 Nov
Warmest days on average 23.1 °C at Canberra Airport
Coolest days on average 12.7 °C at Mount Ginini AWS
Coldest day -1.5 °C at Mount Ginini AWS on 7 Sep
Coldest night -6.3 °C at Mount Ginini AWS on 17 Sep
Coolest nights on average 2.8 °C at Mount Ginini AWS
Warmest nights on average 5.9 °C at Canberra Airport
5.9 °C at Tuggeranong (Isabella Plains) AWS
Warmest night 16.9 °C at Canberra Airport on 22 Nov
16.9 °C at Tuggeranong (Isabella Plains) AWS on 22 Nov
Warmest on average overall 14.5 °C at Canberra Airport
Coolest on average overall 7.8 °C at Mount Ginini AWS
Wettest overall 145.8 mm at Mount Ginini AWS
Driest overall 68.2 mm at Bruce (Australian Institute of Sport)
Wettest day 32.0 mm at Canberra Airport on 17 Sep
Strongest wind gust 91 km/h at Mount Ginini AWS on 7 Sep
91 km/h at Canberra Airport on 25 Oct

Record lowest spring total rainfall
New record
(mm)
Old
record
Years of
record
Average for
spring
Aranda (Bindaga St) 70.8 73.0 in 1982 46 185.1



Summary statistics for spring 2019
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
spring
2019
Diff
from
average
Highest for
spring
2019
Mean for
spring
2019
Diff
from
average
Lowest for
spring
2019
Total for
spring
2019
Average
for
spring
Rank of
spring
2019
Fraction of
spring
average
Canberra Airport 23.1 +3.4 39.0 21 Nov 5.9 -0.1 -3.1 11 Sep 80.2 177.4 v low 45%
Mount Ginini AWS 12.7 +0.4 28.1 21 Nov 2.8 -0.2 -6.3 17 Sep 145.8 263.3 low 55%
Tuggeranong (Isabella Plains) AWS 22.7 +1.7 38.0 21 Nov 5.9 -0.8 -2.9 1 Sep 79.4 181.9 v low 44%
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,
combined with the current site from March 2010 onwards.

Notes

The Seasonal climate summary, generally published on the first working day of each month, lists the main features of the weather in Australian Capital Territory using the most timely and accurate information available on the date of publication; it will generally not be updated. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

This summary includes data from observing sites in or near the Australian Capital Territory “Greater Capital City Statistical Area” (GCCSA). The Australian Bureau of Statistics designed the GCCSAs to “include the population within the urban area of the city, as well as people who regularly socialise, shop or work within the city, and live in small towns and rural areas surrounding the city. It is important to note that GCCSAs do not define the built up edge of the city. They provide a stable definition for these cities and are designed for the output of a range of social and economic survey data.

This statement has been prepared based on information available at 10 am on Monday 2 December 2019. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.

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.

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.

Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.

Further information

Media
(03) 9669 4057
Enquiries