Greater Melbourne in autumn 2019: warmer and drier than average

Daytime and night-time temperatures were above average for all sites across Greater Melbourne. Rainfall totals were below average in most suburbs

Below average rainfall

  • Autumn rainfall across Greater Melbourne was generally below average
  • In March and April rainfall was below average, while in May it was above average across the Greater Melbourne area
  • Ferny Creek recorded the highest autumn rainfall total in Greater Melbourne with 333.2 mm
  • The highest daily rainfall total this season, 44.0 mm, was recorded at Willowmavin (in the northern part of Greater Melbourne) on 23 March

Warm days and mild nights

  • Autumn daytime temperatures were warmer than average in all Melbourne suburbs
  • Mean maximum temperature ranged from 1.0 °C above average at Viewbank to 2.0 °C above average at Essendon Airport
  • Some sites had their highest autumn mean daily maximum temperature on record
  • The highest daytime temperature recorded in Greater Melbourne this season was 39.2 °C at Moorabbin Airport and Scoresby Research Institute on 1 March
  • Night-time temperatures were also warmer than average with most sites reporting temperatures more than 0.5 °C above the autumn average
  • There was a very warm night in Greater Melbourne on 1 March, when many sites had night-time temperatures above 20 °C
  • Laverton RAAF, Melbourne Airport and Moorabbin Airport had their warmest autumn night on record on 1 and 3 March
  • A series of cold fronts brought a sharp decrease in temperatures across the Melbourne metropolitan area in the last week of the season
  • Melbourne's lowest daytime temperature this autumn was 5.6 deg;C at Ferny Creek on 29 May

Melbourne (Olympic Park)

  • Total rainfall for Melbourne (Olympic Park) was 72.6 mm
  • The mean daily maximum temperature for Melbourne (Olympic Park) was 21.5 °C. The warmest day was 38.1 °C on 1 Mar, and the coolest day was on 29 May when the temperature reached 10.6 °C
  • The mean daily minimum temperature for Melbourne (Olympic Park) was 12.6 °C. The coldest morning was 6.2 °C on 18 May, and the warmest morning was on 3 Mar when the minimum temperature was 25.1 °C

Thunderstorms and strong winds

  • Thunderstorms associated with a low pressure trough delivered heavy rain and large hail to eastern parts of Greater Melbourne on 23 March
  • Melbourne's strongest recorded wind gust during autumn was 111 km/h at South Chanel Island on 7 May

Further information

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Extremes in autumn 2019
Hottest day 39.2 °C at Moorabbin Airport on 1 Mar
39.2 °C at Scoresby Research Institute on 1 Mar
Warmest days on average 22.4 °C at Coldstream
22.4 °C at Viewbank
Coolest days on average 18.1 °C at Ferny Creek
Coldest day 5.6 °C at Ferny Creek on 29 May
Coldest night 0.3 °C at Coldstream on 18 May
Coolest nights on average 8.5 °C at Coldstream
Warmest nights on average 12.6 °C at Melbourne (Olympic Park)
Warmest night 26.3 °C at Laverton RAAF on 1 Mar
Warmest on average overall 17.1 °C at Melbourne (Olympic Park)
Coolest on average overall 14.2 °C at Ferny Creek
Wettest overall 333.2 mm at Ferny Creek
Driest overall 68.6 mm at Laverton RAAF
Wettest day 44.0 mm at Willowmavin (Avalon Station) on 23 Mar
Strongest wind gust 111 km/h at South Channel Island on 7 May

Record highest autumn mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Melbourne Airport 22.2 = 22.2 in 2016 48 20.4
Cranbourne Botanic Gardens 21.6 = 21.6 in 2007 29 20.0
Wallan (Kilmore Gap) 19.1 = 19.1 in 2018 25 17.2
Coldstream 22.4 22.3 in 2018 24 20.9



Record highest autumn daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Laverton RAAF 26.3 on 1 Mar 25.8 on 18 Mar 2008 76 10.1
Melbourne Airport 25.4 on 1 Mar 24.3 on 13 Mar 2013 49 10.4
Moorabbin Airport 24.4 on 3 Mar 24.0 on 18 Mar 2008 48 10.7



Summary statistics for autumn 2019
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
autumn
2019
Diff
from
average
Highest for
autumn
2019
Mean for
autumn
2019
Diff
from
average
Lowest for
autumn
2019
Total for
autumn
2019
Average
for
autumn
Rank of
autumn
2019
Fraction of
autumn
average
Cerberus 21.3 +1.4 38.6 1 Mar 10.7 +0.4 1.8 18 May 119.4 173.7 low 69%
Coldstream 22.4 +1.5 38.3 1 Mar 8.5 +1.0 0.3 18 May 160.0 173.2 average 92%
Cranbourne Botanic Gardens 21.6 +1.6 38.5 1 Mar 11.0 +0.6 4.3 30 Apr 167.7 180.0 average 93%
Essendon Airport 22.2 +2.0 38.9 3 Mar 11.7 +1.6 4.1 18 May 90.6 141.3 low 64%
Ferny Creek 18.1   34.7 1 Mar 10.2   2.1 30 May 333.2
Laverton RAAF 21.9 +1.6 39.1 3 Mar 11.3 +1.2 3.2 18 May 68.6 124.7 v low 55%
Melbourne (Olympic Park) 21.5   38.1 1 Mar 12.6   6.2 18 May 72.6
Melbourne Airport 22.2 +1.8 38.4 3 Mar 11.1 +0.7 4.6 30 May 70.8 119.0 v low 59%
Moorabbin Airport 21.9 +1.5 39.2 1 Mar 12.1 +1.4 3.8 17 May 114.2 173.4 low 66%
Scoresby Research Institute 22.0 +1.8 39.2 1 Mar 11.2 +0.9 3.5 18 May 163.0 208.8 low 78%
Viewbank 22.4 +1.0 38.7 1 Mar 11.0 +0.7 3.2 17 May 103.8 147.7 v low 70%
Wallan (Kilmore Gap) 19.1 +1.9 34.8 1 Mar 9.7 +0.7 2.3 30 May 106.6 154.1 low 69%

Notes

The Seasonal climate summary, generally published on the first 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 10 am on Monday 3 June 2019. 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
Enquiries