Greater Melbourne in September 2022: cold days

Mean maximum temperatures were below average across Greater Melbourne, while mean minimum temperatures were close to average or above average at most reporting sites. Rainfall totals for September were generally below average to close to average in most Melbourne suburbs.

Below average to close to average rainfall

  • September rainfall was generally below average to close to average at all but one (Wallan/Kilmore Gap) reporting sites in Greater Melbourne.
  • The wettest days were on the 2nd, between the 8th and 19th and on the 28th.
  • The highest daily total was 47.2 mm at Bullengarook East on the 28th.
  • Woodend was the wettest location in Greater Melbourne, recording 150.2 mm for the month.

Cold days

  • Mean maximum temperatures were below average across Greater Melbourne.
  • Averaged across all reporting sites, the September mean maximum temperature was the coldest since 2010.
  • The coldest days were at Ferny Creek, where the mean maximum temperature was 1.4 °C below average.
  • September started with below average daily maximum temperatures due to strong southerly flow after the passage of a cold front.
  • The lowest daily maximum temperature in Greater Melbourne this month was 8.2 °C at Wallan (Kilmore Gap) on the 4th.
  • Days were warmer than average only on the 7th, 9th and between the 20th and 22nd and the highest daily maximum temperature this month was 21.1 °C at the Olympic Park site on the 21st and at Coldstream on the 22nd.
  • Melbourne (Olympic Park) had only five days this September with maximum temperature equal or above 20.0 °C.
  • Mean minimum temperatures were close to average or above average at most reporting sites, and ranged from 0.3 °C below average at Ferny Creek to 0.9 °C above average at Laverton RAAF.
  • The warmest night in Greater Melbourne this month saw 13.3 °C at Melbourne (Olympic Park) on the 23rd.

Melbourne (Olympic Park)

  • Total rainfall for Melbourne (Olympic Park) was 48.8 mm, which is 102% of the long-term average of 47.9 mm.
  • The mean daily maximum temperature for Melbourne (Olympic Park) was 16.6 °C.
  • The warmest day was 21.1 °C on the 21st, and the coolest day was on the 4th when the temperature reached 12.7 °C.
  • The mean daily minimum temperature for Melbourne (Olympic Park) was 9.1 °C.
  • The coldest morning was 3.5 °C on the 14th, and the warmest morning was on the 23rd when the minimum temperature was 13.3 °C.

Tornado and hail

  • A tornado was reported on the 18th, with damage to houses in lines through the western suburbs of Greater Melbourne (Melton to Airport West).
  • Large hail of 2.0−2.5 cm diameter was reported in Melbourne's western suburbs on the 18th.

Further information

Media
(03) 9669 4057

Extremes in September 2022
Hottest day 21.1 °C at Melbourne (Olympic Park) on the 21st
21.1 °C at Coldstream on the 22nd
Warmest days on average 16.8 °C at Moorabbin Airport
Coolest days on average 12.1 °C at Wallan (Kilmore Gap)
Coldest day 8.2 °C at Wallan (Kilmore Gap) on the 4th
Coldest night -1.5 °C at Coldstream on the 14th
Coolest nights on average 5.6 °C at Wallan (Kilmore Gap)
Warmest nights on average 9.1 °C at Melbourne (Olympic Park)
Warmest night 13.3 °C at Melbourne (Olympic Park) on the 23rd
Warmest on average overall 12.8 °C at Melbourne (Olympic Park)
Coolest on average overall 8.9 °C at Wallan (Kilmore Gap)
Wettest overall 150.2 mm at Woodend
Wettest day 47.2 mm at Bullengarook East on the 28th
Strongest wind gust 83 km/h at Wallan (Kilmore Gap) on the 8th

Summary statistics for September 2022
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
September
2022
Diff
from
average
Highest for
September
2022
Mean for
September
2022
Diff
from
average
Lowest for
September
2022
Total for
September
2022
Average
for
September
Rank of
September
2022
Fraction of
September
average
Cerberus 16.2 -0.3 20.7 9th 8.0 +0.4 2.9 25th 57.2 67.3 average 85%
Coldstream 16.5 -0.8 21.1 22nd 5.7 +0.1 -1.5 14th 46.8 69.0 low 68%
Essendon Airport 16.3 -0.6 20.5 9th 7.8 +0.9 0.5 14th 56.4 50.9 average 111%
Ferny Creek 12.5 -1.4 18.4 22nd 6.4 -0.3 2.5 13th 83.2 98.9 low 84%
Frankston (Ballam Park) 16.1   20.2 9th 8.2   2.6 14th 35.8
Laverton RAAF 16.2 -0.9 20.4 9th 7.8 +1.0 1.4 14th 44.0 48.3 average 91%
Melbourne (Olympic Park) 16.6   21.1 21st 9.1   3.5 14th 48.8 47.9 average 102%
Melbourne Airport 16.1 -0.7 20.1 21st 7.1 0.0 0.8 14th 49.2 46.5 average 106%
Moorabbin Airport 16.8 -0.2 20.8 9th 8.3 +0.2 1.4 14th 51.4 63.9 average 80%
Scoresby Research Institute 16.5 -0.1 20.8 21st 8.1 +0.5 2.6 13th 51.4 81.5 low 63%
Viewbank 16.6 -1.2 20.8 9th 7.6 -0.2 0.8 14th 62.0 56.1 average 111%
Wallan (Kilmore Gap) 12.1 -1.2 17.4 22nd 5.6 -0.1 2.0 13th 92.0 61.3 high 150%

Daily maximum temperatures for September 2022
123456789101112131415161718192021222324252627282930
Cerberus14.712.914.413.914.616.619.016.420.714.716.313.412.718.517.018.114.015.414.819.418.318.215.714.617.317.516.416.016.517.8
Coldstream14.112.515.012.515.617.320.018.119.915.815.713.413.717.916.116.713.514.715.519.520.021.117.315.318.015.516.716.917.020.1
Essendon Airport14.712.514.712.715.917.819.716.720.516.116.813.712.917.015.917.014.215.715.618.719.918.717.014.918.414.715.816.015.819.6
Ferny Creek10.39.210.98.711.513.715.613.616.010.912.49.39.714.013.212.78.79.511.016.116.418.414.111.314.712.812.311.512.615.3
Frankston (Ballam Park)14.712.714.612.014.716.619.218.420.215.615.514.413.017.916.816.512.513.914.618.918.819.615.615.417.116.416.416.616.318.4
Laverton RAAF16.412.614.812.514.416.019.816.920.415.716.613.912.917.515.717.313.716.316.019.419.618.616.714.818.014.715.116.015.918.4
Melbourne (Olympic Park)16.012.814.812.716.017.020.617.321.015.616.413.612.718.117.417.214.015.615.320.121.116.917.914.718.816.015.916.015.620.1
Melbourne Airport14.712.514.511.815.117.719.316.319.815.716.213.512.417.214.917.313.816.815.818.620.119.316.315.118.514.214.515.815.219.4
Moorabbin Airport16.012.814.112.915.417.420.418.620.815.717.414.215.218.618.818.513.214.515.520.120.416.717.214.817.217.216.418.116.818.9
Scoresby Research Institute14.912.914.512.015.218.119.817.220.115.916.413.412.717.616.916.713.414.915.519.520.820.317.614.917.915.716.717.416.819.6
Viewbank14.512.614.412.815.618.419.817.320.816.317.213.613.517.716.317.314.215.116.120.019.919.717.314.818.615.515.716.416.420.4
Wallan (Kilmore Gap)10.58.610.78.212.013.515.211.515.411.612.39.89.112.19.712.58.912.213.213.416.317.413.910.914.010.011.510.712.015.9
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 2022
123456789101112131415161718192021222324252627282930
Cerberus3.68.56.06.55.45.98.19.68.911.48.67.05.84.59.14.98.710.48.34.411.16.712.610.62.96.910.312.610.811.3
Coldstream2.47.12.52.23.7-0.11.97.78.17.66.67.11.6-1.58.34.38.59.44.62.59.25.612.45.61.56.110.412.28.64.1
Essendon Airport4.37.04.67.66.42.63.611.810.810.27.46.43.70.511.010.08.49.37.27.211.78.812.77.52.911.510.312.110.37.2
Ferny Creek5.94.34.14.64.64.67.310.710.17.44.54.62.53.27.97.66.16.03.46.210.710.410.35.13.77.98.08.85.87.0
Frankston (Ballam Park)5.45.64.85.65.56.37.611.110.110.89.58.04.52.610.38.28.710.28.86.611.78.411.96.54.710.310.812.310.19.6
Laverton RAAF4.57.16.16.86.12.24.412.311.310.56.55.42.61.410.68.88.59.15.85.911.37.912.77.42.811.210.712.410.610.6
Melbourne (Olympic Park)6.19.66.97.47.24.37.612.611.110.99.68.66.43.59.910.09.59.19.07.011.69.413.310.95.311.511.212.711.08.8
Melbourne Airport4.35.74.56.54.92.62.811.010.49.94.75.23.40.810.29.67.69.55.56.410.58.011.96.23.210.89.811.89.06.2
Moorabbin Airport5.59.24.95.45.82.84.89.67.910.99.48.54.11.411.09.99.29.88.46.611.98.312.710.34.711.311.312.811.29.3
Scoresby Research Institute4.47.53.54.84.39.210.410.37.96.22.610.59.98.39.15.75.611.512.75.610.311.011.99.810.2
Viewbank3.88.05.76.06.81.54.411.58.710.28.47.24.40.810.47.58.79.57.14.311.98.312.89.12.610.110.512.110.45.9
Wallan (Kilmore Gap)3.73.13.14.54.23.96.38.38.86.93.04.42.02.66.27.85.55.64.24.37.810.09.74.63.67.26.88.65.85.6
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 2022
123456789101112131415161718192021222324252627282930
Bullengarook East 0.4 5.4 1.4 2.0 0.2 - 3.2 14.2 7.4 0.2 3.2 4.6 0.2 6.6 0.4 7.4 11.4 5.8 - 0.4 - 0.4 7.4 - 0.6 4.6 47.2 1.8 -
Burnside - 6.0 0.5 1.0 - - - 4.0 1.1 2.0 - 4.0 - - 7.4 - 4.2 8.0 5.0 - 1.0 - - 10.0 - - 1.3 6.2 1.2 -
Cape Schanck - - - 5.4 - - - 3.0 3.8 3.2 - 5.0 2.4 - 6.6 - 6.6 2.2 11.4 - - - - - - 2.0 2.2 6.0

Cerberus 0.2 3.8 0.6 - - - - 4.0 4.0 2.6 0.4 3.8 4.2 0.2 4.2 - 12.4 5.0 8.6 2.4 - - - - - 0.4 0.4 - - -
Cheltenham Kingston Centre - - 0.6 - - - - - 2.8 5.0 0.1 1.3 - - 2.6 - 5.0 6.0 5.0 - 0.2 - - - - - 0.8 0.8 - -
Coldstream 0.2 2.4 0.6 0.2 - - - 0.2 1.8 6.4 - 6.4 0.6 - 6.6 0.2 3.2 4.0 10.2 - 0.2 - - - - - 1.4 2.0 - 0.2
Eltham - 13.8 2.6 0.6 - - - 1.2 0.8 9.8 - 7.4 - 6.2 - 5.2 4.4 18.0 0.2 0.4 - - - - - - 6.8

Essendon Airport 0.2 8.4 - 0.4 0.2 - - 3.0 0.2 6.0 - 3.4 1.4 - 5.0 - 3.0 3.8 6.4 - 0.6 - - 3.0 0.2 - 2.6 8.4 0.2 -
Ferny Creek - 7.4 0.6 - 0.2
- 1.0 2.8 14.2 0.2 6.6
- - - 6.0 15.0 10.6
0.6 - - 4.2 - 0.2 1.8 9.2 2.4 0.2
Frankston (Ballam Park) - 1.2 0.4 0.4 - - - 1.0 1.2 5.0 - 3.4 0.2 - 5.2 0.2 4.4 3.4 6.0 1.2 0.2 - - 0.2 - 0.2 0.2 1.6 0.2 -
Greenvale Reservoir - 6.0 0.2 0.2 - - 0.2 4.0 0.8 4.4 0.2 5.4 0.4 0.2 3.0 0.2 3.2 5.8 11.6 - 0.2 - 0.2 1.6 - - 4.0 7.8 - -
Hesket (Straws Lane) 0.2 4.2 1.2 0.8 0.2 - - 6.4 16.0 7.2 - 3.4 4.8 - 7.0 0.4 6.0 8.8 11.6 - 0.8 - - 4.0 - 0.4 4.2 41.2 6.2 -
Kinglake West 0.2 5.4 - - - - - 8.6 17.2 13.0 13.2 3.0 - 3.6 3.2 8.6 16.6 - - - - 2.8 - 4.6 5.0 1.6
Kinglake West (Wallaby Creek) 0.2 4.0 0.4 - 0.2 - 0.2 8.8 19.0 14.8 3.0 11.8 4.8 0.2 3.4 1.0 6.8 8.4 9.6 - - 0.2 0.2 2.6 - 1.2 2.2 6.8 1.0 0.2
Laverton RAAF - 2.4 0.2 0.8 0.2 - - 2.6 1.0 8.4 - 0.8 1.0 - 6.6 - 5.6 4.4 4.0 - 1.0 - - 1.6 - - 0.2 2.8 0.4 -
Macedon Forestry - - - - - - - 9.8 15.8 - - 10.8 - - 11.0 - - - 27.0 - - - - - - 5.6 - 26.0

Melbourne (Olympic Park) - 2.4 - 0.2 - - - 3.0 0.2 6.8 - 1.6 1.4 - 7.6 - 4.2 9.6 3.4 0.2 0.6 - 0.2 0.4 - - 2.8 4.2 - -
Melbourne Airport - 5.0 0.6 1.2 - - - 4.8 0.6 2.0 - 3.6 0.2 - 3.8 - 2.6 4.8 6.0 - 0.2 0.2 - 2.2 - 0.2 1.4 9.8 - -
Melbourne Botanical Gardens - 4.2 - 0.2 - - - 3.2 0.6 6.2 1.6 1.8 2.2 0.2 6.2 - 4.8 10.2 3.4 - - - - - - - 3.0 4.0 - -
Mitcham - 1.4 0.4 0.2 - - - 0.8 0.2 7.2 - 4.0 1.8 - 6.4 - 4.2 12.4 15.6 - - - - - - - 1.6 4.4 - -
Monbulk (Spring Road) - 4.8 - - - - - - 5.6 8.0 4.4 5.0 3.0 - 6.4 - 6.4 25.4 9.8 0.8 0.4 - - 3.0 - - 2.8 5.0 0.4
Moorabbin Airport - 1.4 0.6 - - - - 2.0 1.0 8.8 - 2.6 1.0 - 5.0 - 7.8 10.0 8.4 0.2 0.2 0.2 - - - - 1.4 0.8 - -
Mornington - - 2.0 - - 2.5 - - - - 9.5 - - - - - - - - - - - - - - - 2.0
Mount Waverley (Riversdale Golf Club) - 1.3 - 1.0 - - - - 3.8 6.0 3.0 1.2 3.0 - 6.2 - 2.2 6.6 4.1 0.3









Newham (Cobaw) - - - - - - - 10.6 21.4 4.4 - 4.0 1.8 - 11.0 - 8.6 9.0 8.6 - 1.0 - - - - 1.2 14.0 19.8 0.4
Oakleigh (Metropolitan Golf Club) - 1.6 - - - - 3.0 2.2 - 6.0 - 3.4 - - 5.2 - 4.4 21.6 3.0 - 0.6 - - - - - 1.6 1.7

Preston Reservoir - 4.0 0.2 - - 0.2 - 2.8 0.2 11.2 - 5.0 3.8 - 5.6 - 3.8 7.8 5.6 - - - - 2.0 0.2 - 4.0 8.0 - -
Rosebud (Country Club) - 4.4 - 1.2 - - - 4.0 5.0 7.2 4.0 1.4 - 7.8 - 4.4 2.0 5.4 - 0.4 1.0 0.8 8.8

Scoresby Research Institute - 1.2 1.0 - - - - 0.8 0.2 10.0 - 2.8 0.4 - 6.0 - 4.0 11.8 6.6 - 0.4 - - 0.2 0.2 - 0.6 5.2 - -
Springvale (Sandown) 1.2 0.4 - - - - - 3.2 0.2 4.8 2.8 0.4 0.2 0.2 4.0 3.2 19.4 11.2 - - 0.2 - - - - 0.6 1.6


Springvale Necropolis 2.0 - - - - - - - - 11.0 - 6.0 29.0 - - - - - - - - 3.0

Toorourrong Reservoir (Toorourrong) - 4.4 0.2 0.6 - - 0.2 3.2 9.6 11.4 2.0 8.4 4.6 - 2.4 - 4.2 2.6 11.2 - - - - 1.2 - 0.6 1.6 7.0 0.4 -
Upper Plenty - 5.4 - - - - - 4.2 8.6 10.6 - 6.8 3.4 0.2 3.0 0.4 6.4 8.6 7.4 - 0.4 - 0.2 1.8 - 1.8 1.6 10.6 1.0 -
Viewbank - 2.6 0.6 - - - - 2.0 1.8 7.8 - 5.2 1.8 - 7.2 - 3.4 11.6 7.4 - 0.4 - - - - - 3.2 7.0 - -
Wallan - 4.6 - - - - - 10.4 9.6 6.2 - 4.8 0.8 - 4.0 - 3.8 5.2 - 6.6 - - - 4.6 - - 2.6 8.6

Wallan (Kilmore Gap) 0.2 4.8 - 0.2 - 0.2 - 10.0 15.6 6.8 - 5.2 2.2 0.4 5.0 1.0 2.8 5.8 11.2 - 0.2 - 0.2 5.6 0.2 1.0 2.0 10.8 0.6 -
Willowmavin (Avalon Station) 0.2 0.8 0.2 - - - - 19.8 18.4 5.6 - 2.6 0.8 0.2 13.8 1.2 4.4 9.6 9.6 0.2 0.8 - - 2.6 - 1.4 3.0 24.6 0.2 -
Woodend - 3.4 - 1.0 0.4 - - 7.4 19.4 10.6 0.2 4.0 2.2 0.2 8.8 0.8 9.6 14.2 8.6 0.2 0.8 0.2 - 2.2 0.2 0.8 4.6 46.6 3.6 0.2
Yan Yean - 5.8 0.2 - - - - 0.8 1.0 16.6 1.4 6.4 6.0 - 2.0 - 4.4 7.0 16.0 - - - - 0.6 - 0.4 1.4 7.2 - -
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 third working day of each month, lists the main features of the weather in Greater Melbourne 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 Greater Melbourne “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 1 pm on Sunday 2 October 2022. 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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