Greater Melbourne in October 2023

Rainfall

  • October rainfall totals varied from close to average, to above average at all sites across Greater Melbourne.
  • Rainfall totals ranged from 90 % of the monthly average at Melbourne Airport to 160 % of the monthly average at Coldstream.
  • The wettest day of the month was on the 4th, as a cold front and low pressure system brought widespread rainfall to Greater Melbourne. Kinglake West (Wallaby Creek) recorded the highest rainfall total of Greater Melbourne at 74.2 mm.

Temperature

  • Mean maximum temperatures were below to above average across Greater Melbourne and varied from 1.4 °C below average at Melbourne (Olympic Park) to 0.4 °C above average at Melbourne Airport and Laverton RAAF.
  • Several cold fronts and low pressure troughs crossed Greater Melbourne throughout October and the southerly airflow associated with these systems brought cooler than average daytime temperatures for all sites across Greater Melbourne for much of October.
  • The warmest day of the month was on the 20th, Laverton RAAF recorded 30.3 °C and many other sites across Greater Melbourne also recorded maximum temperatures close to or at 10 °C above the long-term average for October.
  • Mean minimum temperatures were below to above average across Greater Melbourne and varied from 0.5 °C below average at Melbourne (Olympic Park) and Ferny Creek to 1.2 °C above average at Essendon Airport.
  • The coolest minimum temperature recorded during October was 0.8 °C at Coldstream on the 4th, and the warmest minimum temperature recorded during October was 20.5 °C at Essendon Airport on the 21st.

Melbourne (Olympic Park)

  • Total rainfall for Melbourne (Olympic Park) was 76.0 mm, which is 119% of the long-term average of 64.0 mm.
  • The mean daily maximum temperature for Melbourne (Olympic Park) was 19.2 °C, which is 1.4 °C below the long-term average of 20.6 °C.
  • The warmest day was 29.5 °C on the 20th, and the coolest day was on the 25th when the temperature reached 13.4 °C.
  • The mean daily minimum temperature for Melbourne (Olympic Park) was 10.4 °C, which is 0.5 °C below the long-term average of 10.9 °C.
  • The coldest morning was 5.8 °C on the 8th, and the warmest morning was on the 1st when the minimum temperature was 19.0 °C.

Extremes in October 2023
Hottest day 30.3 °C at Laverton RAAF on the 20th
Warmest days on average 19.9 °C at Melbourne Airport
Coolest days on average 15.9 °C at Ferny Creek
Coldest day 8.3 °C at Ferny Creek on the 4th
Coldest night 0.8 °C at Coldstream on the 8th
Coolest nights on average 6.8 °C at Wallan (Kilmore Gap)
Warmest nights on average 10.4 °C at Melbourne (Olympic Park)
Warmest night 20.5 °C at Essendon Airport on the 21st
Warmest on average overall 14.8 °C at Melbourne (Olympic Park)
Coolest on average overall 11.4 °C at Wallan (Kilmore Gap)
Wettest overall 196.4 mm at Ferny Creek
Wettest day 74.2 mm at Kinglake West (Wallaby Creek) on the 4th
Strongest wind gust 104 km/h at Laverton RAAF on the 3rd




Summary statistics for October 2023
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
October
2023
Diff
from
average
Highest for
October
2023
Mean for
October
2023
Diff
from
average
Lowest for
October
2023
Total for
October
2023
Average
for
October
Rank of
October
2023
Fraction of
October
average
Cerberus 18.2 -0.4 28.2 20th 8.9 0.0 3.0 2nd 72.4 68.2 average 106%
Coldstream 19.3 -0.5 28.2 29th 7.0 +0.2 0.8 8th 121.8 76.0 high 160%
Essendon Airport 19.7 +0.2 29.1 20th 9.6 +1.2 5.2 2nd 64.8 60.4 average 107%
Ferny Creek 15.9 -0.9 25.2 20th 7.6 -0.5 2.9 25th 196.4 143.4 high 137%
Frankston (Ballam Park) 18.6   28.4 20th 9.5   5.1 26th 42.6
Laverton RAAF 19.8 +0.4 30.3 20th 9.4 +1.0 3.7 2nd 73.4 56.2 high 131%
Melbourne (Olympic Park) 19.2 -1.4 29.5 20th 10.4 -0.5 5.8 8th 76.0 64.0 high 119%
Melbourne Airport 19.9 +0.4 28.9 20th 8.7 +0.2 2.9 2nd 50.4 55.9 average 90%
Moorabbin Airport 19.1 -0.2 28.7 20th 9.7 +0.4 3.8 8th 79.2 70.5 average 112%
Scoresby Research Institute 18.7 -0.5 28.4 2nd 8.7 -0.1 3.1 2nd 98.8 85.2 average 116%
Viewbank 19.8 -0.7 28.8 20th 8.8 -0.2 2.7 8th 102.6 72.7 high 141%
Wallan (Kilmore Gap) 16.1 -0.2 25.0 29th 6.8 -0.1 2.5 26th 66.6 57.7 average 115%

Daily maximum temperatures for October 2023
12345678910111213141516171819202122232425262728293031
Cerberus19.025.217.613.915.014.814.814.914.716.015.816.317.115.415.616.423.825.728.220.813.417.723.915.319.622.518.021.216.1
Coldstream21.927.218.312.413.715.215.318.818.218.624.114.715.618.417.015.018.922.925.827.622.214.518.124.813.815.221.220.928.222.517.0
Essendon Airport21.928.018.413.116.715.214.417.416.717.326.016.017.719.617.815.617.624.026.729.124.216.018.525.214.715.720.423.321.723.218.8
Ferny Creek19.024.315.38.310.411.811.415.714.214.521.811.111.714.913.810.615.119.822.925.220.39.515.521.511.212.117.516.923.619.513.0
Frankston (Ballam Park)19.326.417.512.614.614.814.616.416.116.925.715.716.117.415.914.517.623.625.928.420.514.117.823.913.915.119.922.422.021.016.1
Laverton RAAF21.128.119.213.316.915.615.016.316.417.227.616.718.519.717.715.816.824.925.730.323.116.019.126.214.015.819.524.220.523.918.5
Melbourne (Olympic Park)20.528.519.213.516.515.214.315.815.816.526.216.117.519.617.214.716.124.227.129.522.115.518.125.313.415.119.423.321.323.216.0
Melbourne Airport21.227.418.212.916.815.014.417.716.917.626.116.517.319.417.515.618.124.226.828.923.517.018.825.515.015.920.723.524.624.918.0
Moorabbin Airport20.128.118.613.316.616.014.715.615.416.426.615.616.619.016.115.516.323.825.228.720.514.518.425.614.315.821.022.520.323.316.2
Scoresby Research Institute21.428.417.912.315.215.315.117.616.625.215.716.618.717.218.323.423.213.917.825.313.614.620.921.222.717.3
Viewbank21.527.817.912.316.416.115.818.117.719.025.115.918.119.718.215.118.923.826.328.822.615.419.026.313.815.822.122.124.823.717.2
Wallan (Kilmore Gap)18.622.115.28.611.611.411.715.415.114.220.112.014.615.214.411.314.518.421.823.218.914.115.621.011.312.018.118.325.019.615.7
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 October 2023
12345678910111213141516171819202122232425262728293031
Cerberus16.33.011.510.29.79.79.54.75.210.13.28.810.411.68.08.59.23.58.711.816.512.110.17.88.87.34.810.77.5
Coldstream9.11.88.19.77.76.04.10.87.010.03.112.37.310.78.98.45.84.26.18.015.58.29.95.85.02.93.74.04.111.36.3
Essendon Airport18.35.211.810.07.17.56.05.59.710.65.914.09.511.09.98.89.56.610.313.220.510.99.612.07.05.97.97.88.211.07.9
Ferny Creek17.05.512.67.15.55.04.84.64.26.07.110.96.87.26.74.75.27.112.215.319.17.06.27.12.93.44.69.87.28.74.7
Frankston (Ballam Park)18.36.810.99.79.26.76.45.37.110.16.213.510.311.510.98.96.76.610.313.317.011.510.411.28.75.17.37.77.811.19.0
Laverton RAAF18.03.711.310.36.46.99.46.59.710.55.511.810.011.310.19.39.46.09.612.516.911.59.711.96.06.09.57.46.110.97.5
Melbourne (Olympic Park)19.07.410.310.58.810.07.75.88.911.06.911.810.611.611.510.110.37.911.214.318.811.610.612.38.97.38.39.59.112.49.1
Melbourne Airport16.82.910.99.76.86.64.33.49.010.05.913.58.910.29.38.65.46.010.614.319.510.49.310.75.15.27.36.56.19.87.2
Moorabbin Airport18.24.511.310.19.69.16.13.87.710.86.014.010.411.611.59.39.55.89.111.317.410.510.811.48.78.07.76.47.112.19.4
Scoresby Research Institute20.03.111.29.57.85.24.89.74.313.89.810.910.28.46.16.413.410.110.211.17.63.54.26.75.811.98.0
Viewbank18.84.09.09.67.37.54.82.77.810.54.211.29.310.710.48.88.35.38.111.017.210.89.611.66.96.27.66.67.411.67.6
Wallan (Kilmore Gap)11.76.110.66.63.94.63.23.75.26.56.710.76.17.85.85.54.16.310.113.615.75.45.57.23.42.54.47.08.28.54.0
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 October 2023
12345678910111213141516171819202122232425262728293031
Bonbeach (Carrum (Patterson River Countr - - 7.0 25.0 4.5 6.0 - - - - - - 13.2 3.5 - 6.0 - - - - - - - - - - - - - - 7.8
Burnside - - 4.0 40.0 6.0 8.2 - - - - - - 7.8 0.5 - 3.0 - - - - - - 0.9 - - 3.0 0.5 - - - 3.0
Cape Schanck - - 11.8 10.4 2.0 - - - - - - - 9.0 9.8 - - - - 7.0 - - - - - - - 5.2
Cerberus - - 8.4 23.6 0.8 2.2 - - - 0.2 - 4.2 8.2 0.4 0.4 6.2 - - - - - 1.6 7.0 - 0.2 2.2 - - - - 6.8
Cheltenham Kingston Centre - - 6.4 14.7 2.0 6.8 7.0 0.2 - - - - 13.6 0.5 - 4.2 0.8 - - - - 0.5 1.8 - - 1.4 - - - - 2.8
Coldstream - - 1.4 52.0 3.6 15.4 0.2 - - - - 3.6 12.4 4.0 0.2 14.0 7.2 - - - - - 0.8 0.2 - 2.6 0.8 - - - 3.4
Eltham - - 5.2 37.8 4.8 11.8 - - - - - 1.8 15.6 4.6 - 10.2 3.2 - - - - - - 0.2 - 9.8 0.2 - - - 2.2
Essendon Airport - - 2.6 26.4 6.8
- - - - - 1.4 11.6 1.4 - 7.8 0.8 - - - - - 0.8 - - 3.4 0.2 - - - 1.6
Ferny Creek -
6.0 72.8 9.6 20.0 - - - - - 2.8 28.8 9.6 0.8 18.0 6.6 0.2 - - - 2.0 9.0 0.6 - 4.4
- - - 5.2
Frankston (Ballam Park) - - 7.0
2.4 2.6 0.6 - - - - 0.6 11.6
0.2 7.2 2.0
- - - 0.8 1.2 0.2 - 0.8 0.2 - - - 5.2
Greenvale Reservoir - - 0.2 21.6 4.6 11.8 - - - - - - 8.0 1.4 0.2 5.0 1.4 - - - - - - 0.2 - 0.2 1.6 - - - 0.2
Hesket (Straws Lane) - - 8.4 32.4 7.8 5.2 0.4 - - - - 0.2 3.6 0.4 - 4.8 0.4 - - - - 1.6 0.4 - - 3.8 2.2 - - - 0.4
Kinglake West - - 71.2 10.4 19.4 0.8 - - - - 0.6 13.4 5.0 - 18.2 - - - - - 3.4 - - 7.8 1.2 - - - 1.4
Kinglake West (Wallaby Creek) - - 4.6 74.2 9.4 14.8 0.2 - - - - - 12.4 3.6 - 12.6 2.2 - - - - - 3.0 0.4 - 7.0 1.8 - - - 0.6
Koo Wee Rup - - 8.0 36.2


























Lancefield - - 7.4 35.0 0.6 1.8 - - - - - - - 0.8 - - - - - - - - - - - 1.0 1.2 - - - -
Laverton RAAF - - 2.2 25.0 8.4 7.2 - - - - - 1.8 9.2 1.2 - 7.0 2.0 - - - - - 1.0 - - 6.2 0.4 - - - 1.8
Macedon Forestry - - 6.8 30.0 9.2 6.0
























Melbourne (Olympic Park) - - 3.0 22.8 6.8 7.2 0.4 - - - - 1.2 13.4 2.2 - 5.0 0.8 0.2 - - - 0.2 2.4 - - 8.2 0.4 - - - 1.8
Melbourne Airport - - 1.6 18.4 3.6 10.8 0.2 - - - - 1.6 5.6 0.2 0.2 3.8 1.0 - - - - - - - - 2.2 0.4 - - - 0.8
Melbourne Botanical Gardens - - 4.0 25.0 7.0 8.0 0.5 - - 0.1 - - 15.8 2.4 - 5.2 0.6 - - - - 4.0 1.8 - - 9.2 - 0.4 - - 2.4
Mitcham - - - 45.0 2.6 14.2 0.4 - - - - - 16.6 1.2 - 9.8 5.8 - - - - 0.4 2.4 - - 8.2 0.2 - - - 3.0
Monbulk (Spring Road) - - 14.2 60.8 7.2 15.8 - - - - - - 25.1 - 2.0 16.0 6.4 - - - - 1.4 10.0 1.4 - 3.4 0.6 - - - 8.8
Moorabbin Airport - - 3.2 25.0 5.2 7.8 - - - - - 1.4 17.2 1.0 - 6.4 4.4 - - - - 1.0 0.8 - - 2.0 - - - - 3.8
Mornington - - 4.0 26.0 1.0 4.5 - - 0.6 - - 2.6 10.0 - - 7.6 2.0 - - - - - - 0.2 - 0.7 - - - - 8.0
Mount Waverley (Riversdale Golf Club) - - - 31.2 4.2 10.2 - - - - - - 17.4 0.6 - 5.6 7.0 - - - - - 2.4 - - 9.6 - - - 2.8
Newham (Cobaw) - - 6.4 43.2 - - - - - - - - 3.0 - - 3.2 - - - - - 1.4 1.6







Oakleigh (Metropolitan Golf Club) - - - 31.8 6.8 11.0 - - - - - - 19.5 1.2 - 7.0 - - - - - - 3.4 - - 7.4 0.4 - - - 3.0
Preston Reservoir - - 0.2 29.8 10.4 12.8 - - - - - 0.6 15.0 1.4 - 7.2 0.8 - - - - - 0.8 - - 7.0 0.6 - - - 2.4
Romsey - - - 47.0

























0.6
Rosebud (Country Club) - - - 22.0 - - - - - - - 6.0 6.6 - - 10.2 - - - - - 1.2 12.4 - - 2.8




Scoresby Research Institute

3.2 47.4 2.2



- - 1.0 22.0 1.0 0.2 11.6 3.2 -


0.6 2.8 - -

- -
3.6
Springvale Necropolis - - 41.0 5.0 11.5 - - - - - - 25.0 - - 10.0 - - - - 11.5 - - - - - - - 4.0
Tarrawarra Monastery - 0.2 1.0 40.0 3.0 13.0 2.0 0.2 - - - - 17.0 5.0 - 8.2 9.0 0.2 0.2 0.2 - - 0.3 0.2 - 2.0 1.0 - 0.2 4.0
Toorourrong Reservoir (Toorourrong) - - 2.0 53.8 3.4 8.2 0.2 - - - - - 8.4 0.6 - 8.8 2.2 - - - - - 0.4 - - 6.4 1.0 - - - -
Upper Plenty - - 3.6 54.4 8.4 5.6 - - - - - 0.4 7.6 2.6 - 11.0 1.2 - - - - - 1.0 - - 4.4 1.2 - - - 0.2
Viewbank - - 3.2 36.2 3.6 11.2 - - - - - 1.4 13.0 5.0 - 13.0 2.2 - - - - - 1.0 - - 9.2 0.4 - - - 3.2
Wallan - - 40.0 - - - - - - - - 8.0 - 3.4 - - 7.8 - - - - - 0.2 - 0.6 1.6 - - - - 0.6
Wallan (Kilmore Gap) - - 4.2 39.6 4.4 2.4 0.2 - 0.2 - - 0.6 4.4 1.2 - 4.4 1.4 0.2 - - - - 0.6 - - 2.0 0.8 - - - -
Warburton (O'Shannassy Reservoir (Quarte -




















-







Willowmavin (Avalon Station) - - 6.0 43.4 0.8 1.6 - 0.2 - - 0.2 0.6 2.2 0.2 0.2 3.2 - - 0.2 - - - - - - 1.4 - - - - -
Woodend - - 12.8 31.0 5.6 2.8 0.2 - - - - 0.9 2.9 0.8 0.4 3.6 0.4 - - - - 2.6 0.2 - - 5.0 1.0



Yan Yean - - 1.0 49.8 4.2 11.2 0.2 - - - - - 12.2 3.0 - 5.2 1.4 - - - - - 0.4 - - 5.8 1.6 - - - -
Yarra River @ Warrandyte


-
0.4
























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 11 am on Wednesday 1 November 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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