Canberra in September 2014: Dry start to spring

Canberra recorded close to half its average rainfall during September 2014, with seven rain days (average ten days) but only one day with more than 2 mm recorded (average six days). This was associated with a strong cold front that crossed the state over the 9th, with 22.6 mm recorded at the airport and 33.2 mm at Nicholls to 9am on the 10th, the wettest day in the ACT since April 4.

Daytime temperatures were 1.7 °C above average during the month, with minimum temperatures 0.6 °C below average, associated with generally clear, dry conditions. Seven nights dropped below 0 °C, close to normal for September (six nights), with the coldest night dropping to -4.3 °C on the 19th.

  • Fewest days with at least 2 mm of rain since 1994.
  • Wettest day since April.

Further information

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Extremes in September 2014
Hottest day 25.4 °C at Tuggeranong (Isabella Plains) AWS on the 29th
Warmest days on average 17.9 °C at Canberra Airport
Coolest days on average 9.1 °C at Mount Ginini AWS
Coldest day 0.9 °C at Mount Ginini AWS on the 2nd
Coldest night -5.4 °C at Mount Ginini AWS on the 3rd
Coolest nights on average 0.4 °C at Mount Ginini AWS
Warmest nights on average 3.6 °C at Tuggeranong (Isabella Plains) AWS
Warmest night 11.7 °C at Tuggeranong (Isabella Plains) AWS on the 25th
Warmest on average overall 10.7 °C at Tuggeranong (Isabella Plains) AWS
Coolest on average overall 4.8 °C at Mount Ginini AWS
Wettest overall 41.8 mm at Nicholls (Gungahlin Lakes)
Driest overall 27.6 mm at Torrens (Darke St)
Wettest day 33.2 mm at Nicholls (Gungahlin Lakes) on the 10th
Strongest wind gust 81 km/h at Mount Ginini AWS on the 30th

Summary statistics for September 2014
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
September
2014
Diff
from
average
Highest for
September
2014
Mean for
September
2014
Diff
from
average
Lowest for
September
2014
Total for
September
2014
Average
for
September
Rank of
September
2014
Fraction of
September
average
Canberra Airport 17.9 +1.7 24.1 29th 2.7 -0.6 -4.3 19th 28.8 52.0 low 55%
Mount Ginini AWS 9.1 +0.4 16.4 29th 0.4 0.0 -5.4 3rd 38.4 86.7 low 44%
Tuggeranong (Isabella Plains) AWS 17.8 +0.1 25.4 29th 3.6 -0.3 -2.1 7th 29.2 61.3 low 48%

Daily maximum temperatures for September 2014
123456789101112131415161718192021222324252627282930
Canberra Airport18.911.913.614.215.114.617.719.018.317.717.415.417.018.719.218.015.213.916.118.317.920.122.219.919.218.218.222.224.124.0
Mount Ginini AWS9.10.92.24.74.95.59.29.46.75.67.28.610.012.611.49.33.46.48.611.711.813.816.011.77.010.210.714.416.413.8
Tuggeranong (Isabella Plains) AWS18.412.713.113.814.814.417.317.518.118.416.915.816.818.818.818.315.214.515.818.018.219.922.219.518.317.618.622.725.424.4
Values are the maximum temperature, usually in the 24 hours from 9 am on the day indicated,
and typically occurred in the afternoon of that day.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily minimum temperatures for September 2014
123456789101112131415161718192021222324252627282930
Canberra Airport-1.76.22.10.70.7-0.5-2.60.23.57.74.31.75.1-0.60.97.87.21.5-4.3-1.83.77.31.82.511.00.84.1-0.38.82.7
Mount Ginini AWS1.1-1.9-5.4-3.4-2.3-2.2-1.70.13.21.5-0.3-1.3-0.71.70.92.7-1.4-4.8-3.20.0-0.21.33.24.74.32.00.62.45.56.7
Tuggeranong (Isabella Plains) AWS-1.25.64.11.56.31.4-2.13.75.69.11.72.48.30.90.77.26.20.3-2.00.54.48.22.02.511.71.82.71.68.24.0
Values are the minimum temperature, usually in the 24 hours to 9 am on the day indicated,
and typically occurred that morning.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily rainfall for September 2014
123456789101112131415161718192021222324252627282930
Canberra (Australian National Botanic Ga - 0.8 1.6 - - - - - - 30.6 - - - - - 1.4 - - - - - - - - 2.2 - -
Canberra Airport - 1.4 0.2 - - - 0.2 - - 22.6 - - - - - 1.4 - - - - - - - - 1.6 1.4 - - - -
Mount Ginini AWS - 0.8 2.2 - - 0.2 - - - 24.2 - - - - - 1.4 0.2 0.2 - - - - - - 7.0 2.2 - - - -
Nicholls (Gungahlin Lakes) - - 4.4 - - - - - - 33.2 - - - - - 1.8 - - - - - - - - - 2.4



Tharwa General Store - 1.0 - - - - - - - 20.0 - - - - - 4.6 - - - - - - - - 1.0 4.8 0.8


Torrens (Darke St) - 0.4 0.6 - - 0.8 - - - 22.6 - - - - - 2.0 - - - - - - - - 1.2




Tuggeranong (Isabella Plains) AWS - 0.2 0.6 - - 0.4 - - - 22.0 - - - - - 2.6 0.4 - - - - - - - 1.2 1.8 - - - -
Most values are the precipitation in the 24 hours to 9 am on the day indicated. Days marked with → are part of a longer accumulation, which is shown on the final day.
Values over 100 mm have been rounded to the nearest whole millimetre.
Days marked with - have a rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell).
Rainfalls coloured
according to the amount
0 1.0 5.0 10.0 15.0 25.0 50.0 100 150 200 300 400 600 millimetres

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.

A Climate Summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 10 am on Wednesday 1 October 2014. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

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.

The ACORN-SAT dataset is used for temperature area averages.

Further information

Media
(03) 9669 4057
Enquiries