Melbourne area in winter 2013: One of the warmest & wettest.

Winter 2013 in the Melbourne area was characterised by:

  • Record seasonal and daily rainfall at some stations
  • Record average winter temperatures at some stations.

Rainfall

Rainfall totals for winter 2013 were very much above average in the Melbourne area. Several stations recorded their highest winter rainfall on record. The wettest station overall was Cranbourne Botanic Gardens with 317.2 mm. The driest overall was Laverton RAAF with 161.6 mm. The wettest single day was 1 June when Bundoora (Latrobe University) recorded 98.0 mm, and many stations had their highest daily winter rainfall on record on 1 June.

Temperature

The warmest station on average (a combination of minimum and maximum temperatures) was Melbourne Regional Office with 12.2 C whilst the coolest was Coldstream with 9.7 C.

Maximum temperature

Average winter maximum temperatures in the Melbourne area were the hottest, or equal hottest, on record for many stations. The hottest day came at the end of the season, 31 August, when Avalon Airport recorded 23.4 C. Melbourne Regional Office recorded the warmest days on average with 15.9 C and the coolest days on average were at Cranbourne Botanic Gardens with 14.6 C. The coldest day was 20 July when both Laverton RAAF and Melbourne Airport recorded 8.4 C.

Minimum temperature

Average minimum temperatures were warmer than usual this winter. A couple of stations had their highest winter mean daily minimum temperature on record. The coldest night was 23 June when Coldstream recorded -5.1 C and Coldstream recorded the coolest nights on average with 4.4 C. The warmest nights on average were recorded at Melbourne Regional Office with 8.4 C and Melbourne Regional Office recorded the warmest night on 30 August with 14.6 C. Viewbank had its lowest winter temperature on record.

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Extremes in winter 2013
Hottest day 23.4 C at Avalon Airport on 31 Aug
Warmest days on average 15.9 C at Melbourne Regional Office
Coolest days on average 14.6 C at Cranbourne Botanic Gardens
Coldest day 8.4 C at Laverton RAAF on 20 Jul
8.4 C at Melbourne Airport on 20 Jul
Coldest night -5.1 C at Coldstream on 23 Jun
Coolest nights on average 4.4 C at Coldstream
Warmest nights on average 8.4 C at Melbourne Regional Office
Warmest night 14.6 C at Melbourne Regional Office on 30 Aug
Warmest on average overall 12.2 C at Melbourne Regional Office
Coolest on average overall 9.7 C at Coldstream
Wettest overall 317.2 mm at Cranbourne Botanic Gardens
Driest overall 161.6 mm at Laverton RAAF
Wettest day 98.0 mm at Bundoora (Latrobe University) on 1 Jun
Highest wind gust 96 km/h at Essendon Airport on 12 Aug
96 km/h at Laverton RAAF on 12 Aug

Record highest winter daily rainfall
Highest daily rainfall
in winter 2013 (mm)
Previous wettest
for winter
Years of
record
Scoresby Research Institute 74.2 on 1 Jun 58.9 on 14 Jul 1952 64
Essendon Airport 68.6 on 1 Jun 42.7 on 11 Jul 1933 60
Melbourne Airport 75.8 on 1 Jun 44.6 on 30 Jul 1987 44
Bundoora (Latrobe University) 98.0 on 1 Jun 61.4 on 11 Jun 1999 34
Viewbank 87.4 on 1 Jun 28.4 on 24 Jul 2003 14



Record highest total winter rainfall
Total rainfall
for winter 2013 (mm)
Previous wettest
for winter
Years of
record
Average for
winter
Melbourne Airport 200.2 196.2 in 1991 42 121.7
Bundoora (Latrobe University) 256.3 254.2 in 1989 34 164.9
Viewbank 228.0 204.8 in 2010 14 163.7



Record highest winter mean daily maximum temperature
Mean daily maximum
temperature
for winter 2013 (C)
Previous warmest
for winter
Years of
record
Average for
winter
Melbourne Regional Office 15.9 = 15.9 in 2011 158 14.2
Scoresby Research Institute 15.0 14.8 in 2011 55 13.6
Melbourne Airport 14.8 = 14.8 in 2011 42 13.7
Moorabbin Airport 15.4 15.3 in 2005 40 14.2
Coldstream 15.0 14.7 in 2011 18 14.0



Record lowest winter temperature
Lowest temperature
in winter 2013 (C)
Previous coolest
for winter
Years of
record
Average for
winter
Viewbank -1.3 on 23 Jun = -1.3 on 20 Aug 2003 14 6.1



Record highest winter mean daily minimum temperature
Mean daily minimum
temperature
for winter 2013 (C)
Previous warmest
for winter
Years of
record
Average for
winter
Laverton RAAF 6.6 6.5 in 2005 69 5.4
Essendon Airport 6.9 6.8 in 2005 42 5.6


Summary statistics for winter 2013
Maximum temperatures
for winter
(C)
Minimum temperatures
for winter
(C)
Rainfall
for winter
(millimetres)
Mean for
winter
2013
Diff
from
average
Highest for
winter
2013
Mean for
winter
2013
Diff
from
average
Lowest for
winter
2013
Total for
winter
2013
Average
for
winter
Rank of
winter
2013
Fraction of
winter
average
East Central (district 86)
Bundoora (Latrobe University) 15.0 +1.0 23.1 18 Jul 6.5 +0.6 -1.3 23 Jun 256.3 164.9 highest 155%
Cerberus 14.8 +0.7 21.9 18 Jul 7.1 +0.6 -1.5 22 Jun 277.6 224.8 high 123%
Coldstream 15.0 +1.0 22.5 18 Jul 4.4 +0.4 -5.1 23 Jun 191.8 196.2 average 98%
Cranbourne Botanic Gardens 14.6 +0.7 22.5 18 Jul 7.2 +0.9 -0.2 22 Jun 317.2 230.8 high 137%
Essendon Airport 15.0 +1.4 22.9 29 Aug 6.9 +1.3 -0.8 10 Jul 205.2 132.4 v high 155%
Melbourne Airport 14.8 +1.1 22.8 29 Aug 6.7 +0.9 0.2 24 Jun 200.2 121.7 highest 165%
Melbourne Regional Office 15.9 +1.7 23.3 18 Jul 8.4 +1.9 1.5 23 Jun 219.2 147.3 v high 149%
Moorabbin Airport 15.4 +1.2 23.1 18 Jul 7.1 +0.6 -1.9 23 Jun 205.4 184.9 average 111%
Scoresby Research Institute 15.0 +1.4 22.2 18 Jul 6.7 +0.6 -1.7 23 Jun 288.4 225.1 v high 128%
Viewbank 15.1 +0.6 22.7 29 Aug 6.6 +0.5 -1.3 23 Jun 228.0 163.7 highest 139%
West Central (district 87)
Avalon Airport 15.5 +0.8 23.4 31 Aug 6.1 +0.7 -1.6 22 Jun 165.2 121.5 high 136%
Laverton RAAF 15.3 +1.1 22.7 31 Aug 6.6 +1.2 -1.5 23 Jun 161.6 122.6 high 132%

Notes

A Seasonal Climate Summary is prepared to list the main features of the weather in Melbourne Metropolitan Area and Environs 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.

This statement has been prepared based on information available at 7 am on Monday 2 September 2013. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages 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 being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.

Further information

Media
(03) 9669 4057
Enquiries