Monday, 2 December 2013 - Seasonal Climate Summary for Melbourne Metropolitan Area and Environs - Product code IDCKGC26L0
Melbourne area in spring 2013: Warm nights
The Melbourne area in spring 2013 was characterised by:
- Warmer than usual night-times
- Daytime temperatures close to normal
- Typical rainfall totals in most suburbs.
Wet in the southeast
Preliminary data indicates that spring rainfall was close to normal for most parts of Melbourne. The exception was the outer southeast where both Cranbourne Botanic Gardens and Cerberus observed above average totals. The wettest station overall was Cranbourne Botanic Gardens with 330.9 mm and the driest was Avalon Airport in the west with 149.6 mm. The wettest single day was 13 November when Cerberus recorded 43.6 mm
The warmest station on average (a combination of maximum and minimum temperatures) was Melbourne Regional Office with 16.1 °C, while the coolest was Coldstream with 13.6 °C.
Normal daytime temperatures
Daytime temperatures were mostly close to normal for spring. Most stations reported average maximum temperatures within 0.5 °C of their long-term mean. The hottest day was 20 October when Avalon Airport recorded 33.5 °C. The warmest station on average was Melbourne Regional Office with 20.6 °C, while Cerberus recorded the coolest days on average with 18.6 °C. The coldest day was 13 November when Cranbourne Botanic Gardens recorded 12.5 °C.
Some stations recorded average night-time temperatures very much warmer than usual this spring. At those stations the average minimum temperatures were more than 1.0 °C warmer than their long-term mean. The coldest night was 13 September when Coldstream recorded -1.5 °C, and Coldstream also recorded the coolest nights on average with 7.5 °C. Melbourne Regional Office recorded the warmest nights on average with 11.6 °C. The warmest night was 28 November when Essendon Airport and Scoresby Research Institute recorded 22.5 °C.
The strongest wind gust was 117 km/h recorded at Essendon Airport 1 October.
|Extremes in spring 2013|
|Hottest day||33.5 °C at Avalon Airport on 20 Oct|
|Warmest days on average||20.6 °C at Melbourne Regional Office|
|Coolest days on average||18.6 °C at Cerberus|
|Coldest day||12.5 °C at Cranbourne Botanic Gardens on 13 Nov|
|Coldest night||-1.5 °C at Coldstream on 13 Sep|
|Coolest nights on average||7.5 °C at Coldstream|
|Warmest nights on average||11.6 °C at Melbourne Regional Office|
22.5 °C at Essendon Airport on 28 Nov|
22.5 °C at Scoresby Research Institute on 28 Nov
|Warmest on average overall||16.1 °C at Melbourne Regional Office|
|Coolest on average overall||13.6 °C at Coldstream|
|Wettest overall||330.9 mm at Cranbourne Botanic Gardens|
|Driest overall||149.6 mm at Avalon Airport|
|Wettest day||43.6 mm at Cerberus on 13 Nov|
|Highest wind gust||117 km/h at Essendon Airport on 1 Oct|
|Summary statistics for spring 2013|
|East Central (district 86)|
|Bundoora (Latrobe University)||20.1||+0.4||32.8||27 Nov||9.5||+0.6||0.5||13 Sep||213.0||194.7||average||109%|
|Cerberus||18.6||+0.2||31.9||27 Nov||10.0||+1.1||3.7||8 Sep||271.2||192.5||v high||141%|
|Coldstream||19.8||0.0||31.2||27 Nov||7.5||+0.5||-1.5||13 Sep||209.4||213.0||average||98%|
|Cranbourne Botanic Gardens||18.7||-0.1||31.5||27 Nov||9.5||+0.5||2.5||13 Sep||330.9||245.8||high||135%|
|Essendon Airport||19.8||+0.6||32.2||27 Nov||9.8||+1.6||0.1||13 Sep||188.2||170.7||average||110%|
|Melbourne Airport||19.7||+0.4||32.7||20 Oct||9.4||+0.8||-0.4||13 Sep||161.2||165.4||average||97%|
|Melbourne Regional Office||20.6||+1.0||33.1||27 Nov||11.6||+2.0||3.9||13 Sep||193.2||184.5||average||105%|
|Moorabbin Airport||19.5||+0.3||32.8||27 Nov||10.3||+0.9||1.5||13 Sep||201.2||199.3||average||101%|
|Scoresby Research Institute||19.6||+0.7||31.6||27 Nov||9.6||+0.7||-0.3||13 Sep||238.8||250.7||average||95%|
|Viewbank||20.1||-0.4||32.4||27 Nov||9.7||+0.4||0.9||13 Sep||197.6||199.9||average||99%|
|West Central (district 87)|
|Avalon Airport||19.9||0.0||33.5||20 Oct||8.8||+0.4||0.4||13 Sep||149.6||147.7||average||101%|
|Laverton RAAF||19.5||+0.3||32.9||27 Nov||9.5||+1.2||-0.7||13 Sep||161.4||159.2||average||101%|
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 2 December 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
(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.