Melbourne in October 2014: Warm days and Melbourne's wettest day in 20 months

October rainfall was generally average to below average across the Melbourne region, with the heaviest rainfall occurring early on the 27th as a result of a prefrontal trough and associated thunderstorm activity. Melbourne Regional Office recorded nearly half of its October rainfall on this day, with 25.6 mm in the 24 hours to 9 am, resulting in the wettest day since February 2013. The wettest location was at Ferny Creek which recorded 102.2 mm for the month.

Mean maximum temperatures for October for the Melbourne region were at least 1.6 degrees above the long-term average, with seven locations reporting October mean maximum temperature records. The Melbourne Regional Office recording its highest October mean maximum temperature since 1961. Daytime temperatures were generally coolest mid-month across the region with the warmest day occurring on the 22nd. Minimum temperatures were above average, with a period from the 23rd through to the 27th maintaining warm overnight temperatures. At the Melbourne Regional Office, the minimum temperature during this period was at least 4.3 °C above the long term average.

  • Below average to average rainfall for the month
  • Wettest day on the 27th resulted in flash flooding and numerous lightning strikes
  • Record mean maximum temperatures for October at a number of sites.

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Extremes in October 2014
Hottest day 34.1 °C at Avalon Airport on the 22nd
Warmest days on average 22.8 °C at Avalon Airport
Coolest days on average 18.1 °C at Ferny Creek
Coldest day 10.5 °C at Ferny Creek on the 13th
Coldest night 1.8 °C at Coldstream on the 17th
Coolest nights on average 7.4 °C at Coldstream
Warmest nights on average 11.4 °C at Melbourne Regional Office
Warmest night 16.6 °C at Melbourne Airport on the 19th
Warmest on average overall 17.0 °C at Melbourne Regional Office
Coolest on average overall 13.0 °C at Ferny Creek
Wettest overall 102.2 mm at Ferny Creek
Driest overall 18.6 mm at Laverton RAAF
Wettest day 26.4 mm at Ferny Creek on the 27th
Strongest wind gust 81 km/h at Melbourne Airport on the 19th

Record highest October mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
October
Laverton RAAF 21.9 21.8 in 1961 71 19.2
Scoresby Research Institute 21.4 21.1 in 2008 55 19.0
Melbourne Airport 22.1 21.7 in 2008 44 19.2
Moorabbin Airport 21.3 21.0 in 2008 43 19.1
Bundoora (Latrobe University) 22.3 21.7 in 2008 31 19.5
Cranbourne Botanic Gardens 20.6 = 20.6 in 2008 23 18.7
Cerberus 19.9 19.8 in 2008 22 18.3
Coldstream 21.6 21.4 in 2006 20 19.4

Highest October mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Years since
higher
Average for
October
Melbourne Regional Office 22.6 23.0 in 1961 53 19.7
Essendon Airport 22.2 23.2 in 1940* 43 19.1

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported.




Record highest October mean temperature
New record
(°C)
Old
record
Years of
record
Average for
October
Melbourne Regional Office 17.0 = 17.0 in 1963 159 14.6
Essendon Airport 15.9 = 15.9 in 1963 44 13.7
Melbourne Airport 15.6 15.4 in 2008 44 13.8
Cerberus 14.7 14.5 in 2011 22 13.5
Coldstream 14.5 14.3 in 2011 20 12.9

Highest October mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Years since
higher
Average for
October
Laverton RAAF 15.6 15.8 in 1963 51 13.7
Moorabbin Airport 15.6 15.7 in 1991 23 14.2
Scoresby Research Institute 15.3 15.6 in 1991* 21 13.9

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported.




Summary statistics for October 2014
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
October
2014
Diff
from
average
Highest for
October
2014
Mean for
October
2014
Diff
from
average
Lowest for
October
2014
Total for
October
2014
Average
for
October
Rank of
October
2014
Fraction of
October
average
Avalon Airport 22.8 +3.0 34.1 22nd 8.3 +0.4 3.3 4th 23.6 49.2 low 48%
Bundoora (Latrobe University) 22.3 +2.8 32.8 31st 9.4 +0.7 3.2 15th 34.1 63.9 low 53%
Cerberus 19.9 +1.6 31.7 22nd 9.5 +0.8 4.5 15th 50.2 68.3 low 73%
Coldstream 21.6 +2.2 30.0 31st 7.4 +0.9 1.8 17th 56.4 66.5 average 85%
Cranbourne Botanic Gardens 20.6 +1.9 31.0 22nd     3.5 15th 75.0 78.6 average 95%
Essendon Airport 22.2 +3.1 32.1 31st 9.6 +1.4 4.0 15th 38.6 60.2 average 64%
Ferny Creek 18.1   27.1 22nd 7.9   3.6 1st 102.2
Laverton RAAF 21.9 +2.7 33.6 31st 9.2 +1.0 4.1 21st 18.6 56.2 v low 33%
Melbourne (Olympic Park) 21.7   32.3 31st 11.0   5.9 15th 45.8
Melbourne Airport 22.1 +2.9 32.6 31st 9.1 +0.6 4.3 15th 34.6 54.0 average 64%
Melbourne Regional Office 22.6 +2.9 32.9 31st 11.4 +1.9 7.1 1st 52.2 66.0 average 79%
Moorabbin Airport 21.3 +2.2 33.7 22nd 9.9 +0.7 3.9 15th 40.8 69.7 low 59%
Scoresby Research Institute 21.4 +2.4 31.3 31st 9.2 +0.4 2.1 15th 62.0 84.5 average 73%
Viewbank 22.2 +2.2 32.5 22nd 9.3 +0.5 2.5 15th 37.2 63.6 average 58%

Daily maximum temperatures for October 2014
12345678910111213141516171819202122232425262728293031
Avalon Airport16.419.121.628.319.526.217.820.720.830.222.731.015.315.816.718.516.926.830.919.024.334.118.732.420.720.520.020.824.324.034.0
Bundoora (Latrobe University)15.717.719.226.020.023.917.617.623.724.531.015.015.515.915.717.824.529.220.228.832.321.731.719.924.819.419.924.022.532.8
Cerberus15.116.218.025.616.522.215.517.419.224.917.523.614.215.014.916.015.322.027.118.323.631.718.427.917.917.917.618.019.418.930.9
Coldstream15.116.919.523.619.724.616.717.921.222.423.329.514.615.716.315.919.422.326.920.626.929.324.129.922.122.918.019.722.123.130.0
Cranbourne Botanic Gardens15.017.119.824.817.522.416.017.321.524.219.826.713.614.515.016.016.722.328.523.531.019.028.718.220.017.318.121.020.530.5
Essendon Airport16.717.818.525.518.325.118.019.922.724.020.831.315.515.416.115.818.424.228.520.727.931.820.731.820.724.920.220.623.021.832.1
Ferny Creek11.512.516.721.218.721.413.614.417.819.318.726.310.511.511.712.315.119.024.516.023.627.120.527.016.920.314.815.118.418.326.7
Laverton RAAF15.418.020.828.217.826.318.120.521.325.319.027.215.715.315.917.916.725.729.919.127.533.119.030.018.522.219.220.121.520.633.6
Melbourne (Olympic Park)15.217.119.626.317.425.417.218.621.924.520.026.914.615.615.415.616.324.629.220.728.232.322.330.318.224.719.419.521.821.332.3
Melbourne Airport15.618.018.725.818.425.516.819.823.523.521.431.315.615.615.715.918.024.828.219.827.631.320.231.420.725.218.520.023.022.532.6
Melbourne Regional Office16.617.919.426.519.525.318.418.823.324.921.630.016.717.317.517.218.424.429.121.229.131.822.730.620.324.620.020.523.222.332.9
Moorabbin Airport14.817.419.526.217.124.917.018.420.025.018.925.115.915.816.116.016.624.529.020.725.933.721.929.118.322.419.219.520.319.132.4
Scoresby Research Institute15.216.818.824.418.024.716.618.621.922.820.329.515.115.214.715.918.022.728.519.627.130.222.530.120.424.018.218.922.821.031.3
Viewbank15.817.619.524.918.825.117.817.522.623.922.030.315.315.916.315.618.024.728.820.628.232.521.931.220.924.419.319.623.622.332.3
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 2014
12345678910111213141516171819202122232425262728293031
Avalon Airport5.36.08.13.312.06.09.57.34.88.19.65.49.38.34.58.34.63.712.710.14.38.614.010.213.911.813.59.87.210.08.2
Bundoora (Latrobe University)6.06.210.55.413.57.010.06.47.610.912.87.39.53.210.48.24.412.59.34.712.314.514.413.513.113.18.27.811.77.7
Cerberus5.99.79.04.712.14.910.89.47.48.413.16.49.68.24.59.99.16.312.69.69.810.713.714.213.210.912.111.410.710.35.5
Coldstream4.23.59.93.613.04.311.14.97.77.47.85.68.97.53.58.71.82.68.29.12.47.712.811.013.712.812.95.66.85.94.1
Cranbourne Botanic Gardens6.08.08.26.412.07.09.08.29.012.77.58.69.33.59.06.05.014.36.35.212.712.012.511.212.510.510.29.07.3
Essendon Airport5.77.39.95.413.07.010.36.97.212.411.06.69.47.94.08.99.44.716.49.45.513.514.314.113.313.212.88.58.311.98.2
Ferny Creek3.64.97.28.89.27.17.86.77.610.09.68.85.74.34.26.54.36.814.75.16.915.711.411.410.29.09.65.47.08.27.7
Laverton RAAF4.45.910.05.012.45.511.05.86.010.211.55.79.98.56.57.67.04.216.111.04.113.514.012.114.213.213.48.57.713.27.4
Melbourne (Olympic Park)7.49.610.78.713.79.112.19.09.413.813.79.49.78.65.911.010.28.013.510.28.013.114.814.614.113.813.511.610.713.410.4
Melbourne Airport5.36.09.07.312.66.69.76.57.412.510.76.98.47.54.37.76.44.516.69.25.014.213.713.112.811.512.57.47.710.87.9
Melbourne Regional Office7.19.410.89.013.99.312.28.89.813.613.910.310.28.68.410.810.68.714.710.88.314.015.215.214.613.913.811.510.913.710.8
Moorabbin Airport8.19.511.05.713.37.211.59.18.39.113.67.69.88.13.910.96.55.616.58.05.49.713.712.213.512.913.811.510.211.78.4
Scoresby Research Institute5.85.610.17.213.16.511.48.18.312.610.97.08.97.32.19.44.85.215.88.44.913.214.112.913.112.112.99.48.09.67.2
Viewbank5.57.310.35.913.36.29.86.67.510.113.07.39.07.42.58.76.45.313.78.95.112.114.314.513.212.512.89.88.911.77.5
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 2014
12345678910111213141516171819202122232425262728293031
Avalon Airport 4.2 - - - - - 1.8 0.2 - - - - 1.8 9.6 1.2 - - - - - - - - - - - 4.4 - 0.2 0.2 -
Bundoora (Latrobe University) 3.2 0.2 0.4 - - - 2.2 0.2 0.8 - - - 2.8 4.6 - - 3.2 - - - - - - - 0.1 - 14.6 1.0 0.8 - -
Cerberus 7.2 0.4 1.2 - 0.2 - 14.0 0.2 0.2 - - - 1.2 12.0 - - - - - - - - - - - - 11.8 0.4 1.4 - -
Coldstream 5.0 0.2 0.6 0.2 - - 7.6 0.2 0.8 0.2 - - 3.8 10.2 - - 5.4 - - - - - - - - - 15.4 6.4 0.4 - -
Cranbourne Botanic Gardens 6.8 2.8 0.2 - - - 10.6 0.6 0.8 - - - 3.6 13.0 0.2 0.4 2.2 - - 0.2 - - - - - - 16.4 10.0 7.2 - -
Essendon Airport 2.8 - 0.4 - - - 1.4 0.6 0.8 - - - 1.2 9.0 - - 1.0 - - - - - - - - - 20.6 0.8 - - -
Ferny Creek 8.2 1.2 2.6 - - - 8.4 0.2 - 0.2 - - 8.8 20.4 - 1.2 7.8 - - 1.0 - - - 0.2 1.0 - 26.4 11.8 2.8 - -
Laverton RAAF 1.6 - - - - - 0.4 - - - - - 1.2 5.0 0.2 - - - - - - - - - - - 9.8 0.2 0.2 - -
Melbourne (Olympic Park) 2.6 - 0.6 0.2 - - 1.0 1.0 - - - - 4.4 6.0 0.2 - 3.4 - - - - - - - - - 22.4 3.6 0.4 - -
Melbourne Airport 4.2 - - - - - 1.6 0.2 0.2 - - - 2.0 7.2 - - 1.2 - - - - - - - - - 16.6 0.8 0.6 - -
Melbourne Regional Office 2.2 0.2 0.4 - - - 1.2 0.8 - - - - 5.4 7.4 - - 4.6 - - - - - - - - - 25.6 3.6 0.6 - 0.2
Moorabbin Airport 2.6 - 0.6 - - - 3.4 - - - - - 1.8 8.8 - - 1.6 - - - - - - - - - 15.0 5.6 1.4 - -
Scoresby Research Institute 4.2 - 4.0 - - - 5.0 - - - - - 1.8 11.2 - - 3.0 - - - - - - - 0.2 0.2 25.8 6.0 0.6 - -
Viewbank 3.2 0.2 0.6 0.2 - - 2.0 0.4 0.8 0.2 - - 2.4 6.0 - - 3.2 - - - - - - - - - 14.2 3.0 0.8 - -
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

A Monthly Climate Summary is prepared to list the main features of the weather in Melbourne 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 9 am on Monday 3 November 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
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