Australian Capital Territory in January 2023: below average temperatures

Rainfall was average in most sites in the ACT. Temperatures were below average.

Average to above average rain

  • Rainfall in January was average to above average in most sites.
  • Most rainfall occurred on January 5 and on the last two days of the month.
  • Scattered rain also fell on other days of the month.
  • The highest daily rainfall was 39.2 mm recorded at Australian National Botanic Gardens on 5 January to 9 am. .

Below Average temperatures

  • Both maximum and minimum temperatures were below average across the territory.
  • The warmest day was 34.8 °C recorded at two sites, Canberra Airport and Tuggeranong (Isabella Plains) on 28 January.
  • The Territory experienced cold nights between 5-10 and 20-26 of January.
  • Mt Gemini had the coldest day and the coldest night on the 5th and 7th of January, respectively.

Canberra Airport

  • Total rainfall for Canberra Airport was 82.0 mm, which is 155% of the average at the current site of 52.9 mm and 140.7% of average over all years of 58.3mm.
  • The mean daily maximum temperature for Canberra Airport was 27.6 °C, which is 2.7 °C below average at the current site of 30.3 °C and 0.7 °C below the average over all years of 28.3 °C. The warmest day was 34.8 °C on the 28th, and the coolest day was on the 5th when the temperature reached 19.2 °C
  • The mean daily minimum temperature for Canberra Airport was 12.8 °C, which is 1.5 °C below the average at the current site of 14.3 °C and 0.5 °C below the average over all years of 13.3 °C . The coldest morning was 5.6 °C on the 8th, and the warmest morning was on the 29th when the minimum temperature was 19.6 °C

Further information

Media
(03) 9669 4057

Extremes in January 2023
Hottest day 34.8 °C at Canberra Airport on the 28th
34.8 °C at Tuggeranong (Isabella Plains) AWS on the 28th
Warmest days on average 27.7 °C at Tuggeranong (Isabella Plains) AWS
Coolest days on average 18.6 °C at Mount Ginini AWS
Coldest day 8.1 °C at Mount Ginini AWS on the 5th
Coldest night 2.2 °C at Mount Ginini AWS on the 7th
Coolest nights on average 9.0 °C at Mount Ginini AWS
Warmest nights on average 13.7 °C at Tuggeranong (Isabella Plains) AWS
Warmest night 19.6 °C at Canberra Airport on the 29th
Warmest on average overall 20.7 °C at Tuggeranong (Isabella Plains) AWS
Coolest on average overall 13.8 °C at Mount Ginini AWS
Wettest overall 83.2 mm at Mount Ginini AWS
Wettest day 39.2 mm at Canberra (Australian National Botanic Ga on the 5th
Strongest wind gust 93 km/h at Canberra Airport on the 15th




Summary statistics for January 2023
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
January
2023
Diff
from
average
Highest for
January
2023
Mean for
January
2023
Diff
from
average
Lowest for
January
2023
Total for
January
2023
Average
for
January
Rank of
January
2023
Fraction of
January
average
Canberra Airport 27.6 -2.7 34.8 28th 12.8 -1.5 5.6 8th 82.0 52.9 high 155%
Mount Ginini AWS 18.6 -2.3 24.3 28th 9.0 -1.1 2.2 7th 83.2 85.0 average 98%
Tuggeranong (Isabella Plains) AWS 27.7 -1.9 34.8 28th 13.7 -0.8 7.5 21st 82.4 58.1 high 142%
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.

Daily maximum temperatures for January 2023
12345678910111213141516171819202122232425262728293031
Canberra Airport27.330.532.424.919.220.822.027.832.329.830.232.930.729.733.226.830.531.320.821.725.323.024.829.129.433.627.334.824.221.327.6
Mount Ginini AWS19.721.623.016.88.111.616.218.323.521.421.824.224.120.523.117.921.520.513.913.215.013.613.018.719.422.520.724.314.613.419.3
Tuggeranong (Isabella Plains) AWS26.830.933.424.419.320.123.228.632.330.130.732.631.530.033.526.930.329.620.722.425.324.225.327.729.933.027.334.823.521.827.1
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 January 2023
12345678910111213141516171819202122232425262728293031
Canberra Airport15.717.412.214.912.49.67.85.69.19.710.717.014.218.112.816.713.813.912.66.26.511.411.39.511.010.216.216.919.617.615.6
Mount Ginini AWS8.911.511.110.63.83.02.26.310.812.89.512.811.89.611.410.59.713.19.53.23.25.56.67.87.611.79.59.912.712.59.8
Tuggeranong (Isabella Plains) AWS17.018.212.817.012.311.99.510.48.210.614.317.215.018.614.617.413.915.712.37.67.511.911.411.011.19.617.018.318.018.116.4
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 January 2023
12345678910111213141516171819202122232425262728293031
Aranda (Bindaga St) - - - 0.6 15.2 - - - - - - - - - - - - - 2.2 - - - 2.8 - - - - - - 13.4 22.2
Bruce (Australian Institute of Sport) - - - 0.4 7.2 - - - - - - - - - - 6.0 - - 3.0 - - - 2.4 - - - - - - 14.6 17.8
Canberra (Australian National Botanic Ga 0.2 - - - 39.2 - - - - - - - - - - - - - 2.2 - - - 2.7 - - - - - 0.6 13.9 18.4
Canberra Airport - 0.8 - 0.8 27.4 - - - - - - - - - - 6.2 - - 2.8 - - - 0.4 11.0 - - - - 0.8 14.6 17.2
Ginninderra (Charnwood (ACT)) 0.8 - - - 19.0 - - - - -
- -
- - - - 20.8 0.2 - - 1.8 0.2 - - - - - 15.0 22.4
Mount Ginini AWS 3.8 - - 0.2 1.0 - - - - - - - - 0.2 - 15.4 - - 3.8 - - - 8.0 2.8 4.2 - - - 2.4 22.0 19.4
Nicholls (Gungahlin Lakes) - - - - 4.0 - - - - - - - - - - - - - 4.0 - - - 4.0 1.0 - - - - - 25.0 15.0
Torrens (Darke St) - - 5.6 6.4 12.0 - - - - - - - - - - 3.2 - - 1.2 - - - 0.8 3.8 - - - - 2.2 13.0 19.6
Tuggeranong (Isabella Plains) AWS - 0.2 0.6 3.8 16.4 - - - - - - - - - - 8.8 - - 1.0 - - - 4.0 10.8 - - - - 4.8 14.0 18.0
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

The Monthly 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 9 am on Wednesday 1 February 2023. 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

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