Thursday, 2 January 2014 - Monthly Climate Summary for Melbourne area - Product code IDCKGC36L0
Melbourne area in December 2013: Mostly normal
The Melbourne area in December 2013 was characterised by:
- close to average rainfall for most suburbs
- typical daytime temperatures
- mostly normal overnight temperatures.
Rainfall was mostly close to normal for December. The wettest station overall was Ferny Creek in the Dandenong Ranges of Melbourne's east with 94.2 mm but Coldstream was the wettest compared to normal, reporting 123% of their typical December rainfall. The driest overall was Avalon Airport on the western plains with 23.4 mm but Bundoora (La Trobe University) was the driest compared to normal, reporting 56% of their typical December rainfall. The wettest single day was the 6th when Coldstream recorded 31.6 mm in cold and unstable south-westerly flow.
Overall temperatures close to normal
Mean temperatures (the average of minimum and maximum temperatures) were mostly normal for December. Melbourne Regional Office was the warmest station on average with 19.5 °C and Ferny Creek was the coolest with 15.9 °C.
Near average daytime temperatures
Daytime temperatures have been close to normal in the Melbourne area. The hottest day was the 19th when Avalon Airport recorded 41.1 °C but Viewbank recorded the warmest days on average with 25.0 °C. All stations in the Melbourne area recorded their hottest temperatures for the month on the 19th under the influence of warm northerly winds. The coldest day was the 5th when Ferny Creek recorded 11.4 °C and Ferny Creek also recorded the coolest days on average with 21.3 °C.
Typical overnight temperatures
Overnight temperatures were mostly average for December. The coldest night was the 30th when Coldstream recorded 2.2 °C and Coldstream recorded the coolest nights on average with 10.1 °C. The warmest night was the 20th when Ferny Creek recorded 23.8 °C but Melbourne Regional Office recorded the warmest nights on average with 14.3 °C.
The strongest wind gust was 104 km/h recorded at Laverton RAAF on the 28th.
|Extremes in December 2013|
|Hottest day||41.1 °C at Avalon Airport on the 19th|
|Warmest days on average||25.0 °C at Viewbank|
|Coolest days on average||21.3 °C at Ferny Creek|
|Coldest day||11.4 °C at Ferny Creek on the 5th|
|Coldest night||2.2 °C at Coldstream on the 30th|
|Coolest nights on average||10.1 °C at Coldstream|
|Warmest nights on average||14.3 °C at Melbourne Regional Office|
|Warmest night||23.8 °C at Ferny Creek on the 20th|
|Warmest on average overall||19.5 °C at Melbourne Regional Office|
|Coolest on average overall||15.9 °C at Ferny Creek|
|Wettest overall||94.2 mm at Ferny Creek|
|Driest overall||23.4 mm at Avalon Airport|
|Wettest day||31.6 mm at Coldstream on the 6th|
|Highest wind gust||104 km/h at Laverton RAAF on the 28th|
|Summary statistics for December 2013|
|East Central (district 86)|
|Bundoora (Latrobe University)||24.6||-0.1||40.0||19th||12.5||+0.2||6.7||6th||35.5||63.9||low||56%|
|Cranbourne Botanic Gardens||23.0||-0.3||35.0||19th||11.5||-0.1||7.1||6th||59.0||65.3||average||90%|
|Melbourne (Olympic Park) Comparison||23.7||39.2||19th||13.9||8.2||6th||40.6|
|Melbourne Regional Office||24.7||+0.5||39.9||19th||14.3||+1.4||7.9||6th||38.6||59.2||average||65%|
|Scoresby Research Institute||24.3||+0.4||38.3||19th||12.2||+0.4||5.3||30th||76.2||76.0||average||100%|
|West Central (district 87)|
A Monthly Climate Summary is prepared to list the main features of the weather in Melbourne area 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 10 am on Thursday 2 January 2014. 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.