Greater Melbourne in August 2023

Rainfall

  • August rainfall totals were below to very much below average across Greater Melbourne.
  • Rainfall totals ranged from 37% of the monthly average at Moorabbin Airport to 76% of the monthly average at Ferny Creek.
  • Ferny Creek was the wettest site overall in August recording 95.4 mm of rainfall.

Temperature

  • Mean maximum temperatures were above average across Greater Melbourne and varied from 0.5 °C above average at Melbourne (Olympic Park) to 1.4 °C above average at Scoresby Research Institute.
  • The warmest daytime (maximum) temperatures across Greater Melbourne were reported at the start and end of the month, with 21 °C reported at both Laverton RAAF on the 3rd and Essendon Airport on the 25th.
  • Mean minimum temperatures were above average across Greater Melbourne and varied from 0.3 °C above average at Viewbank to 1.8 °C above average at Essendon Airport.
  • The warmest night-time (minimum) temperature was 14.7 °C at Scoresby Research Institute on the 4th, this was close to 10 °C above the August long-term average. Many sites across Greater Melbourne also had their warmest August night.
  • The coldest night-time (minimum) temperature was on the 16th, with many sites reporting temperatures 6 to 8 °C below average, with Coldstream reporting the coldest temperature at -2.9 °C.

Melbourne (Olympic Park)

  • Total rainfall for Melbourne (Olympic Park) was 22.4 mm, which is 47% of the long-term average of 47.8 mm.
  • The mean daily maximum temperature for Melbourne (Olympic Park) was 15.8 °C, which is 0.5 °C above the long-term average of 15.3 °C.
  • The warmest day was 19.8 °C on the 25th, and the coolest day was on the 17th when the temperature reached 12.5 °C.
  • The mean daily minimum temperature for Melbourne (Olympic Park) was 8.6 °C, which is 0.6 °C above the long-term average of 8.0 °C.
  • The coldest morning was 1.6 °C on the 16th, and the warmest morning was on the 4th when the minimum temperature was 13.4 °C.

Extremes in August 2023
Hottest day 21.0 °C at Laverton RAAF on the 3rd
21.0 °C at Essendon Airport on the 25th
Warmest days on average 16.2 °C at Laverton RAAF
Coolest days on average 11.5 °C at Wallan (Kilmore Gap)
Coldest day 6.8 °C at Wallan (Kilmore Gap) on the 17th
Coldest night -2.9 °C at Coldstream on the 16th
Coolest nights on average 4.8 °C at Coldstream
Warmest nights on average 8.6 °C at Melbourne (Olympic Park)
Warmest night 14.7 °C at Scoresby Research Institute on the 4th
Warmest on average overall 12.2 °C at Melbourne (Olympic Park)
Coolest on average overall 8.3 °C at Wallan (Kilmore Gap)
Wettest overall 95.4 mm at Ferny Creek
Wettest day 22.0 mm at Ferny Creek on the 23rd
Strongest wind gust 89 km/h at Fawkner Beacon on the 4th




Summary statistics for August 2023
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
August
2023
Diff
from
average
Highest for
August
2023
Mean for
August
2023
Diff
from
average
Lowest for
August
2023
Total for
August
2023
Average
for
August
Rank of
August
2023
Fraction of
August
average
Cerberus 15.6 +1.0 19.6 3rd 7.1 +0.4 -0.9 16th 32.8 74.8 lowest 44%
Coldstream 15.6 +0.9 19.7 25th 4.8 +0.4 -2.9 16th 53.8 72.8 low 74%
Essendon Airport 15.7 +1.3 21.0 25th 7.6 +1.8 -0.1 16th 24.8 48.1 low 52%
Ferny Creek 11.9 +1.0 16.8 29th 6.3 +1.0 2.4 23rd 95.4 125.7 low 76%
Frankston (Ballam Park) 15.3   19.9 3rd 7.9   1.3 16th 34.4
Laverton RAAF 16.2 +1.3 21.0 3rd 7.0 +1.4 -0.6 16th 29.2 44.4 low 66%
Melbourne (Olympic Park) 15.8 +0.5 19.8 25th 8.6 +0.6 1.6 16th 22.4 47.8 v low 47%
Melbourne Airport 15.7 +1.2 20.6 25th 6.5 +0.6 0.5 16th 28.0 44.2 low 63%
Moorabbin Airport 15.9 +1.0 20.2 3rd 7.8 +0.9 0.0 16th 23.6 64.5 v low 37%
Scoresby Research Institute 15.7 +1.4 19.9 3rd 7.5 +1.1 -0.8 16th 38.0 79.4 v low 48%
Viewbank 16.1 +1.0 20.2 3rd 6.6 +0.3 -1.3 16th 29.4 56.8 v low 52%
Wallan (Kilmore Gap) 11.5 +0.9 15.8 28th 5.1 +0.8 1.9 16th 35.8 63.2 low 57%

Daily maximum temperatures for August 2023
12345678910111213141516171819202122232425262728293031
Cerberus14.917.119.618.413.813.314.814.718.714.215.213.313.312.212.714.914.912.616.016.318.614.216.017.318.414.616.617.818.015.215.4
Coldstream14.316.919.718.012.614.115.616.318.113.914.514.014.212.914.114.512.612.412.617.516.416.315.819.715.519.018.919.513.714.1
Essendon Airport14.816.619.417.313.113.613.514.718.114.414.815.713.012.213.115.312.114.118.418.717.214.217.117.321.014.616.417.417.414.715.4
Ferny Creek11.312.715.714.88.810.211.013.014.19.110.610.09.88.89.210.79.37.610.213.913.913.511.412.416.311.315.216.016.810.010.5
Frankston (Ballam Park)15.117.019.918.013.511.914.114.618.214.313.914.412.812.613.313.313.414.715.918.213.315.517.218.614.517.016.318.215.613.6
Laverton RAAF15.617.621.020.314.513.814.514.019.315.116.116.013.213.013.816.313.414.118.118.618.113.716.218.820.614.915.517.318.715.416.1
Melbourne (Olympic Park)14.917.119.818.213.613.413.714.218.414.515.716.012.912.713.115.812.513.518.219.217.814.317.017.919.815.515.716.618.414.915.8
Melbourne Airport14.716.619.917.013.313.713.115.418.414.215.315.713.712.513.415.112.313.017.818.516.813.317.017.520.614.316.618.116.816.315.8
Moorabbin Airport16.117.820.218.313.212.218.914.915.715.013.512.613.315.613.912.617.216.818.814.216.417.519.415.717.116.118.814.416.1
Scoresby Research Institute14.717.219.918.813.313.814.916.213.915.514.813.411.914.014.712.512.813.917.618.314.516.416.619.815.218.118.618.714.015.8
Viewbank14.717.320.218.313.813.413.916.518.614.015.515.114.211.714.214.812.413.017.618.919.314.417.917.219.915.718.618.818.914.915.9
Wallan (Kilmore Gap)10.912.114.211.09.38.810.912.913.310.210.310.210.08.39.810.16.88.912.914.710.710.412.912.114.511.913.915.813.511.612.5
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 August 2023
12345678910111213141516171819202122232425262728293031
Cerberus10.53.08.414.38.55.75.91.82.47.77.110.23.90.1-0.7-0.96.88.48.411.59.212.66.04.911.310.19.26.37.712.47.5
Coldstream7.50.42.49.35.26.8-0.10.8-0.17.68.19.55.81.1-0.6-2.9-0.58.05.07.15.610.81.73.24.39.56.95.66.412.73.1
Essendon Airport9.83.57.612.37.47.97.64.03.69.18.69.85.82.52.6-0.16.47.87.612.39.812.24.87.110.410.37.68.710.712.15.5
Ferny Creek7.05.59.111.85.05.65.55.06.66.86.36.74.42.82.63.55.85.14.16.18.110.12.46.18.56.06.89.39.19.43.9
Frankston (Ballam Park)10.94.37.013.48.27.28.53.84.69.19.110.35.74.62.41.35.88.38.611.310.612.34.68.310.19.59.19.212.17.8
Laverton RAAF9.63.28.612.65.66.36.01.82.98.26.69.74.81.40.6-0.66.08.16.512.010.411.83.96.810.010.39.17.39.612.14.9
Melbourne (Olympic Park)11.55.87.813.49.38.69.04.75.510.68.211.07.23.43.41.65.38.99.412.911.513.25.68.611.111.18.99.510.812.76.9
Melbourne Airport8.83.97.711.54.96.65.31.44.18.36.69.14.21.71.10.55.07.26.010.18.911.24.45.79.49.66.37.39.412.04.8
Moorabbin Airport11.03.69.013.68.67.66.82.12.39.89.110.55.21.72.10.06.98.78.811.89.412.45.48.710.910.48.59.19.612.26.6
Scoresby Research Institute9.83.58.714.76.77.47.44.98.99.59.66.21.7-0.1-0.86.78.07.78.710.311.74.48.010.49.97.56.58.412.06.4
Viewbank9.83.15.712.37.77.57.91.42.15.77.610.05.0-0.3-0.5-1.33.57.67.611.19.812.32.66.19.310.17.17.19.012.14.3
Wallan (Kilmore Gap)5.35.96.67.34.64.73.53.74.95.76.75.43.62.12.41.93.14.13.14.97.58.53.74.35.26.55.46.88.09.34.0
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 August 2023
12345678910111213141516171819202122232425262728293031
Bonbeach (Carrum (Patterson River Countr - - - - 3.0 - - - - 4.8 - - 1.5 - - - - 7.0 - - - 5.0 3.0 - - - - - - 7.0
Burnside - - - - - - - - -
- 0.3
- - - -
- - - - 11.0 - - - - - 0.2 3.0 0.9
Cape Schanck 5.4 - - - 2.2 - 2.8 - - 6.0 - - 3.2 - - - - 6.0 5.2 - - 8.4 - - - - - - - 8.0
Cerberus 0.2 0.4 - 0.2 4.0 0.8 0.4 0.2 - 3.4 2.2 - 0.6 0.2 0.6 0.6 - 4.2 6.6 - - 1.6 0.4 - - - - - 0.4 5.6 0.2
Cheltenham Kingston Centre 0.1 - - - 0.6 - - - - - - 1.4 1.0 - - - - 3.8 2.2 - - - 1.4 - - - - - - 1.6 0.2
Coldstream - - - - - - - - - 3.8 0.4 0.2 8.2 - - - - 7.2 8.4 0.8 -
12.8 0.2 - - - - 0.8 3.8 7.2
Eltham - - - - - - - - - 3.0 - 0.2 4.8 - - - - 5.6 1.6 7.8 - - - - - 1.2 4.8 2.8
Essendon Airport - - - - - - - 0.2 - 1.6 0.4 0.2 4.2 0.2 - - - 4.8 - - - - 4.4 - - - - - 0.4 5.4 3.0
Ferny Creek 0.4 1.8 0.2 - 0.6 0.4 - 0.2 0.2 8.6 0.2 0.6 6.8 0.4 - 0.2 0.2 12.4 16.4 2.8 0.4 0.6 22.0 0.2 - 0.4 - 0.2 0.8 10.2 8.2
Frankston (Ballam Park) - - - - 4.2 0.4 0.4 0.2
6.2 1.4 - 0.4 0.6 -

7.4 3.8 - - 1.0 3.4 -

- - 0.2 4.8 -
Greenvale Reservoir - - - - - - - - - 2.4 0.8 0.4 5.4 0.2 0.2 - - 5.0 - - - 2.0 5.8 - - - - - 0.4 1.8 2.4
Kinglake West 0.6 - 0.4 - 5.8 - - - - 5.0 1.8 2.0 5.0 - - - - 9.4 4.6 - - 0.6 14.8 - - 0.6 - - 4.2 6.6
Kinglake West (Wallaby Creek) - 0.4 - - 4.0 0.2 - - 0.2 4.6 3.4 1.2 9.0 - - - 0.2 8.6 1.0 - - 0.4 18.0 0.2 - 0.8 0.2 - 0.6 3.2 10.4
Lancefield 0.2 - - - 4.0 - - - - 6.2 - 1.6 3.6 - 0.2 - - 2.0 0.4 - - 1.8 9.6 - - - - - 0.4 3.6 1.0
Laverton RAAF - - - - 0.8 - - - 0.2 2.2 0.4 - 4.2 - 0.2 - - 5.8 0.2 - - 1.0 9.0 - - - - - 0.2 2.6 2.4
Melbourne (Olympic Park) - - - - - - - - 0.2 2.8 - - 3.4 - - - - 5.4 0.2 - - - 3.6 - - - - - 0.2 3.8 2.8
Melbourne Airport - - - - - - - - - 1.6 0.4 0.4 4.0 - - - - 4.6 0.4 - - 0.2 10.0 - - - - - 0.6 5.6 0.2
Melbourne Botanical Gardens - - - - - - - - - 3.2 - 0.2 4.4 - - - - 6.8 0.3 - - - 4.0 - - 0.1 - - 0.4 3.8 2.8
Mitcham - - - - - - - - 0.2 3.2 - 0.2 6.2 0.2 - - - 9.0 4.2 - - 0.2 8.0 - - - - - 0.8 0.6 6.2
Monbulk (Spring Road) 1.2 - - - 1.6 - - - - 14.0 0.6 1.0 3.6 - - - - 13.6 14.8 - 2.2 1.2 14.6 - - - - - 1.0 3.6 10.4
Moorabbin Airport 0.2 - - - 1.0 - 0.2
- 4.0 - 0.2 0.8 - 0.2 - 0.2 6.8 3.2 - 0.2 - 3.0 - - - - - 0.2 3.0 0.4
Mornington 0.1 0.2 - - 4.0 0.2 0.3 3.1 0.1 0.7 - 0.1 - 6.1 3.0 0.6 3.0 0.1 - - - - 0.6 3.4 0.1
Mount Waverley (Riversdale Golf Club) - - - 0.5 0.2

























Newham (Cobaw) - - - - 9.2 - - - - 7.8 - 2.4 3.4 - - - - 5.0 - - - 5.0 2.0 - - - - - - 4.2
Oakleigh (Metropolitan Golf Club) - - - - - - - - - - - - 4.0 - - - - 7.2 4.2 - - 4.0 - - - - - - 0.8 4.2 3.0
Preston Reservoir - - - - - 0.2 - - - 2.2 0.2 0.2 6.4 - 0.2 - - 5.0 1.6 - - 0.8 5.8 - - 0.2 - - 0.6 1.0 5.6
Romsey 0.2 0.2 - 4.4 0.4 -























Rosebud (Country Club) - - - - 2.5 1.6 1.0 - - 4.8 - 0.8 2.2 0.2 - - 10.4 - - - 5.4








Scoresby Research Institute - - - - - 0.2 -
-
- 0.2 3.8 0.2 - 0.2
8.0 7.2 - - 0.2 7.4 - - - - - 0.4 7.8 2.4
Springvale Necropolis 4.0 - - - - - - - - 7.0 - - - - - - - 10.0 - - 7.0 - 5.0







Toorourrong Reservoir (Toorourrong) - 0.2 - - 0.6 0.4 - - 0.2 4.0 1.4 0.6 4.8 0.2 - - 0.2 5.6 0.4 - - - 12.2 - - 0.2 - - 0.6 3.0 5.8
Upper Plenty - 0.8 - - 2.0 0.6 - 0.2 - 4.4 - 1.2 4.8 - - - - 6.8 1.2 - - 0.2 13.0 - - 0.6 - - 0.6 1.8 1.4
Viewbank - - - - - 0.2 - - - 2.6 - 0.2 6.2 - - 0.2 - 5.4 0.6 - - 0.2 5.8 - - - - 0.2 0.6 4.4 2.8
Wallan - - - - 1.6 - - - 5.6 - - 3.0 2.8

















Wallan (Kilmore Gap) - 0.2 0.6 - 2.8 0.2 - 0.4 - 4.2 - 1.8 4.4 0.2 - - - 3.6 - - 0.2 0.8 11.6 - 0.2 0.2 - 0.4 - 3.2 0.8
Warburton (O'Shannassy Reservoir (Quarte





















- -

- -


Willowmavin (Avalon Station) 0.2 0.2 - 0.2 6.4 - - - 0.4 6.2 - 1.0 4.8 0.2 - 0.4 - 4.0 - - - 2.2 6.0 0.2 0.2 - - 0.2 0.4 2.0 0.2
Woodend 3.4 1.0 - 0.6 3.0 0.6 - 0.2 0.2 6.6 0.2 1.8 4.6 0.2 0.2 0.4 - 3.8 0.4 - - 6.0 5.6 0.2 0.2 0.4 0.2 0.2 0.4 7.0 0.4
Yan Yean - - - - 0.2 - 0.2 0.2 0.2 3.2 0.8 0.6 6.8 0.4 - - - 7.0 1.2 - - - 7.4 - - 0.2 - - 0.6 1.8 5.4
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, usually published in the first week of the following 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.

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 represent a socio-economic definition of each capital city. This means the greater capital city boundary includes people who regularly socialise, shop or work within the capital city, but live in the small towns and rural areas surrounding the capital city. It does not define the built up edge of the capital city.

This statement has been prepared based on information available at 10 am on Friday 1 September 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.

Information about Australian Indigenous seasonal calendars is available at the Indigenous Weather Knowledge website.


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