Greater Melbourne in winter 2019: mild days and nights overall

Winter rainfall was close to average at most reporting sites in Greater Melbourne. Both daytime and night-time temperatures were generally warmer than average, despite some cold outbreaks that brought snow to the Dandenongs

Close to average rainfall

  • Winter rainfall at reporting sites in Greater Melbourne was mostly close to average
  • Cold fronts brought widespread heavy rainfall to Melbourne on several occasions, mostly in June and August
  • The highest daily rainfall total during winter was 42.0 mm at Main Ridge (in the southeast of Greater Melbourne) on 3 June
  • Cape Schanck had its highest winter daily rainfall on record also on 3 June
  • The wettest location in Greater Melbourne was Monbulk, with 411.2.0 mm for the season
  • Year-to-date rainfall was generally below average

Mild days and nights

  • Winter daytime temperatures tended to be warmer than average across most suburbs of Melbourne, with several sites reporting temperatures about a half degree above their wither average
  • The warmest daytime temperature during winter in Greater Melbourne, 20.6 °C, was recorded at Moorabbin Airport on 18 August, in a warm northerly airflow
  • Night-time temperatures were also warmer than average, up to 1.2 °C above average at Essendon Airport and Laverton RAAF
  • The coldest mornings during winter are generally under high pressure systems with clear skies, light winds and cold, dry air; the coldest temperature recorded in Greater Melbourne this season was −2.0 °C at Coldstream on 26 June
  • The coldest daytime temperature, 4.3 °C, was recorded at Ferny Creek on 9 August, in a cold outbreak following the passage of vigorous cold front
  • Year-to-date mean temperature was very much above average

Strong winds and snow

  • Strong, gusty and damaging winds occurred on a number of days through the season
  • The strongest wind gusts during winter were recorded on 9 August, with gusts of 111 km/h reported at South Channel Island; gale force winds caused high waves in Port Phillip Bay, with reports that the end of Frankston Pier was ripped from its moorings due to turbulent weather, while many flights from Melbourne Airport were cancelled
  • Snow was recorded on Dandenong Ranges on 10 and 11 August

Melbourne (Olympic Park)

  • Total rainfall for Melbourne (Olympic Park) was 146.4 mm
  • The mean daily maximum temperature for Melbourne (Olympic Park) was 15.0 °C. The warmest day was 19.5 °C on 28 Jun, and the coolest day was on 23 Jun when the temperature reached 9.6 °C
  • The mean daily minimum temperature for Melbourne (Olympic Park) was 8.0 °C. The coldest morning was 2.3 °C on 30 Aug, and the warmest morning was on 29 Jun when the minimum temperature was 13.0 °C

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Extremes in winter 2019
Hottest day 20.6 °C at Moorabbin Airport on 18 Aug
Warmest days on average 15.0 °C at Melbourne (Olympic Park)
Coolest days on average 10.2 °C at Wallan (Kilmore Gap)
Coldest day 4.3 °C at Ferny Creek on 9 Aug
Coldest night -2.0 °C at Coldstream on 26 Jun
Coolest nights on average 4.4 °C at Coldstream
Warmest nights on average 8.0 °C at Melbourne (Olympic Park)
Warmest night 13.4 °C at Moorabbin Airport on 29 Jun
Warmest on average overall 11.5 °C at Melbourne (Olympic Park)
Coolest on average overall 7.4 °C at Wallan (Kilmore Gap)
Wettest overall 411.2 mm at Monbulk (Spring Road)
Driest overall 114.2 mm at Wallan
Wettest day 42.0 mm at Main Ridge on 3 Jun
42.0 mm at Toolangi (Mount St Leonard DPI) on 27 Aug
Strongest wind gust 111 km/h at South Channel Island on 9 Aug

Record highest winter daily rainfall
New record
(mm)
Old
record
Years of
record
Cape Schanck 34.2 on 3 Jun 33.2 on 6 Jul 2016 20



Highest winter total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
winter
Yan Yean 208.0 254.4 in 1991 161.1



Record lowest winter daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
winter
Viewbank 7.8 on 23 Jun 8.1 on 3 Aug 2017 20 14.5



Summary statistics for winter 2019
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
winter
2019
Diff
from
average
Highest for
winter
2019
Mean for
winter
2019
Diff
from
average
Lowest for
winter
2019
Total for
winter
2019
Average
for
winter
Rank of
winter
2019
Fraction of
winter
average
Cerberus 14.3 +0.1 19.6 28 Jun 7.0 +0.4 -1.0 25 Jun 285.4 221.8 high 129%
Coldstream 14.1 +0.1 19.1 18 Aug 4.4 +0.3 -2.0 26 Jun 224.4 197.5 high 114%
Cranbourne Botanic Gardens 14.3 +0.3 19.5 18 Aug     0.2 24 Jun 282.8 231.1 high 122%
Essendon Airport 14.6 +0.9 18.5 8 Jun 6.9 +1.2 1.1 25 Jun 148.8 131.3 average 113%
Ferny Creek 10.3   15.6 18 Aug 5.3   0.2 10 Aug 380.2
Laverton RAAF 14.6 +0.3 19.6 24 Aug 6.7 +1.2 0.3 30 Aug 142.8 121.4 high 118%
Melbourne (Olympic Park) 15.0   19.5 28 Jun 8.0   2.3 30 Aug 146.4
Melbourne Airport 14.4 +0.6 18.8 8 Jun 6.3 +0.5 0.2 30 Aug 131.8 119.8 average 110%
Moorabbin Airport 14.7 +0.4 20.6 18 Aug 7.3 +0.7 0.3 25 Jun 201.6 182.8 average 110%
Scoresby Research Institute 14.2 +0.6 19.5 18 Aug 6.6 +0.5 0.0 31 Jul 244.0 223.1 average 109%
Viewbank 14.4 -0.1 19.4 18 Aug 6.4 +0.3 -0.1 30 Aug 187.2 158.6 high 118%
Wallan (Kilmore Gap) 10.2 +0.3 14.0 30 Aug 4.5 +0.1 0.2 11 Aug 206.6 191.2 average 108%

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 9 am on Monday 2 September 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

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(03) 9669 4057
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