Monday, 3 September 2012 - Seasonal Climate Summary for Melbourne Metropolitan Area and Environs - Product code IDCKGC2xx0
Melbourne in winter 2012: Wettest winter since 1996
Winter 2012 in Melbourne was characterised by:
- Above average rainfall
- Minimum temperatures ranging from average to very much above average
- Close to normal daytime temperatures.
Rainfall totals for winter 2012 in the Melbourne area ranged from average to very much above average. Although Melbourne's winter total wasn't exceptional, compared to the winter rainfall over the past 16 years (not including 2010), you'd be excused for thinking it had been a wet winter. Rainfall totals for June were above average but July and August were closer to normal. The wettest station overall was Cranbourne Botanic Gardens with 276.6 mm and the driest with only 139.0 mm was Melbourne Airport. Cerberus recorded the most rain days for the season with 72 and Melbourne Airport the least with 50. The wettest single day was 22 June when Cranbourne Botanic Gardens recorded 57.0 mm (their highest winter daily rainfall on record).
The warmest station on average (maximum and minimum temperatures combined) was Melbourne Regional Office with 11.4 °C whilst the coolest on average was Coldstream with 9.1 °C.
Average maximum temperatures were mostly close to normal in the Melbourne area during winter 2012. June provided typical daytime temperatures but July was warmer than normal. August maximum temperatures were mostly close to average. The hottest day of winter was 22 August when Coldstream recorded 21.5 °C and Melbourne Regional Office recorded the warmest days on average with 14.9 °C. Coldstream also recorded the coldest day of winter on 1 July with 9.0 °C and the coolest days on average, 13.7 °C, were recorded at Bundoora (Latrobe University), Cranbourne Botanic Gardens and Melbourne Airport.
Minimum temperatures during winter 2012 around Melbourne ranged from average to very much above average. Night-time temperatures during June were close to normal but during July and August they were warmer than usual. The coldest night was 8 July when Coldstream recorded -3.8 °C and Coldstream recorded the coolest nights on average with 4.5 °C. The warmest nights on average were recorded at Melbourne Regional Office with 7.9 °C and Melbourne Regional Office recorded the warmest night of winter on 23 August with 13.1 °C.
The strongest wind gust was 89 km/h recorded at Melbourne Airport with on 8 August and at Avalon Airport on 23 August.
|Extremes in winter 2012|
|Hottest day||21.5 °C at Coldstream on 22 Aug|
|Warmest days on average||14.9 °C at Melbourne Regional Office|
|Coolest days on average||
13.7 °C at Bundoora (Latrobe University)|
13.7 °C at Cranbourne Botanic Gardens
13.7 °C at Melbourne Airport
|Coldest day||9.0 °C at Coldstream on 1 Jul|
|Coldest night||-3.8 °C at Coldstream on 8 Jul|
|Coolest nights on average||4.5 °C at Coldstream|
|Warmest nights on average||7.9 °C at Melbourne Regional Office|
|Warmest night||13.1 °C at Melbourne Regional Office on 23 Aug|
|Warmest on average overall||11.4 °C at Melbourne Regional Office|
|Coolest on average overall||9.1 °C at Coldstream|
|Wettest overall||276.6 mm at Cranbourne Botanic Gardens|
|Driest overall||139.0 mm at Melbourne Airport|
|Wettest day||57.0 mm at Cranbourne Botanic Gardens on 22 Jun|
|Highest wind gust||
89 km/h at Melbourne Airport on 8 Aug|
89 km/h at Avalon Airport on 23 Aug
|Record highest winter daily rainfall|
Highest daily rainfall
in winter 2012 (mm)
|Cranbourne Botanic Gardens||57.0||on 22 Jun||43.4||on 27 Aug 1999||23|
|Summary statistics for winter 2012|
|East Central (district 86)|
|Bundoora (Latrobe University)||13.7||-0.3||21.0||22 Aug||6.2||+0.3||-1.2||7 Jul||214.8||162.1||high||133%|
|Cerberus||13.8||-0.3||18.6||28 Aug||6.6||+0.1||0.3||8 Jul||254.6||222.3||average||115%|
|Coldstream||13.8||-0.2||21.5||22 Aug||4.5||+0.5||-3.8||8 Jul||247.4||196.5||high||126%|
|Cranbourne Botanic Gardens||13.7||-0.2||20.7||22 Aug||6.5||+0.2||0.7||12 Jun||276.6||227.0||high||122%|
|Essendon Airport||13.9||+0.3||20.5||22 Aug||6.3||+0.8||0.0||7 Jul||142.2||131.3||average||108%|
|Melbourne Airport||13.7||0.0||19.4||29 Aug||5.9||+0.1||-0.2||8 Jul||139.0||119.7||average||116%|
|Melbourne Regional Office||14.9||+0.7||21.2||22 Aug||7.9||+1.4||2.3||7 Jul||184.0||146.8||high||125%|
|Moorabbin Airport||14.2||0.0||20.1||22 Aug||6.8||+0.3||-0.8||8 Jul||202.8||184.6||average||110%|
|Scoresby Research Institute||13.9||+0.3||20.6||22 Aug||6.4||+0.3||0.3||27 Jun||250.6||224.0||high||112%|
|Viewbank||14.1||-0.4||21.0||22 Aug||6.3||+0.2||-1.2||7 Jul||187.2||158.7||high||118%|
|West Central (district 87)|
|Avalon Airport||14.3||-0.5||19.5||28 Aug||5.9||+0.5||-2.1||8 Jul||195.6||120.1||v high||163%|
|Laverton RAAF||14.2||0.0||20.1||22 Aug||6.2||+0.8||-0.6||7 Jul||139.4||122.1||high||114%|
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 1 pm on Monday 3 September 2012. 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
(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.