Melbourne Metropolitan Area and Environs in November 2012:

Rainfall less than that usually received.

Located in the Central District at the head of Port Phillip Bay, Melbourne is Victoria's State Capital. Here, overnight minimum temperatures were much warmer than those usually experienced and averaged 13.7C (departure from normal 2.5C). That the overnight temperatures in Melbourne are higher than those in most surrounding localities is a consequence of the city being under the influence of the effect of urbanisation (cities are usually warmer than their rural surroundings, especially at night, because of heat stored in bricks and concrete and trapped between close-packed buildings). Daytime maximum temperatures were warmer than those usually experienced and averaged 23.3C (departure from normal 1.4C). Total rainfall for the month was 36.6 mm, this being less than that usually recorded (normal 60.3 mm, percentage of normal received 61%).

Some sites had their highest November temperature on record.

Some sites had their warmest November night (highest daily minimum temperature) on record.

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Extremes in November 2012
Hottest day 39.6 C at Melbourne Regional Office on the 29th
Warmest days on average 23.7 C at Viewbank
Coolest days on average 21.5 C at Cerberus
Coldest day 14.1 C at Cranbourne Botanic Gardens on the 2nd
Coldest night 3.5 C at Coldstream on the 19th
Coolest nights on average 9.3 C at Coldstream
Warmest nights on average 13.7 C at Melbourne Regional Office
Warmest night 24.1 C at Melbourne Regional Office on the 30th
Warmest on average overall 18.5 C at Melbourne Regional Office
Coolest on average overall 16.2 C at Cerberus
16.2 C at Coldstream
Wettest overall 57.0 mm at Scoresby Research Institute
Highest wind gust 93 km/h at Melbourne Airport on the 12th

Record highest November temperature
Highest temperature
in November 2012 (C)
Previous warmest
for November
Years of
record
Average for
November
Essendon Airport 39.3 on the 29th 38.3 on the 23rd in 1966 43 21.7
Moorabbin Airport 39.5 on the 29th 38.7 on the 26th in 1997 42 21.6
Cranbourne Botanic Gardens 38.0 on the 29th 36.7 on the 26th in 1997 21 21.1
Avalon Airport 39.5 on the 29th 39.0 on the 26th in 1997 18 22.3
Viewbank 39.1 on the 29th 38.4 on the 20th in 2009 14 24.3



Record highest November daily minimum temperature
Highest daily minimum
temperature
in November 2012 (C)
Previous warmest
for November
Years of
record
Average for
November
Laverton RAAF 23.1 on the 30th 23.0 on the 3rd in 2005 70 10.1
Bundoora (Latrobe University) 23.6 on the 30th 23.2 on the 23rd in 1997 29 10.7
Coldstream 21.5 on the 30th 21.2 on the 3rd in 2005 19 8.8
Viewbank 23.2 on the 30th 21.2 on the 3rd in 2005 13 11.5



Summary statistics for November 2012
Maximum temperatures
for November
(C)
Minimum temperatures
for November
(C)
Rainfall
for November
(millimetres)
Mean for
November
2012
Diff
from
average
Highest for
November
2012
Mean for
November
2012
Diff
from
average
Lowest for
November
2012
Total for
November
2012
Average
for
November
Rank of
November
2012
Fraction of
November
average
East Central (district 86)
Bundoora (Latrobe University) 23.1 +0.6 38.5 29th 11.6 +0.9 5.1 11th 44.4 70.8 low 63%
Cerberus 21.5 +1.1 36.6 29th 10.9 +0.3 5.5 14th 36.0 54.3 average 66%
Coldstream 23.0 +0.4 36.5 29th 9.3 +0.5 3.5 19th 43.0 71.9 low 60%
Cranbourne Botanic Gardens 21.8 +0.7 38.0 29th 10.8 +0.3 5.7 11th 44.1 76.3 low 58%
Essendon Airport 23.3 +1.6 39.3 29th 11.6 +1.7 5.1 11th 27.0 59.0 low 46%
Melbourne Airport 23.3 +1.4 39.3 29th 10.9 +0.5 5.4 15th 22.4 63.0 v low 36%
Melbourne Regional Office 23.3 +1.3 39.6 29th 13.7 +2.5 8.2 11th 36.6 60.3 average 61%
Moorabbin Airport 22.8 +1.2 39.5 29th 11.8 +0.8 6.0 11th 39.2 63.3 low 62%
Scoresby Research Institute 23.1 +1.7 39.0 29th 11.0 +0.7 5.2 11th 57.0 81.7 low 70%
Viewbank 23.7 -0.6 39.1 29th 11.8 +0.3 5.3 11th 38.4 81.7 low 47%
West Central (district 87)
Avalon Airport 23.0 +0.7 39.5 29th 10.2 -0.4 4.0 11th 27.0 49.4 average 55%
Laverton RAAF 22.7 +1.2 39.1 29th 11.3 +1.2 5.0 11th 39.4 53.1 average 74%

Notes

A Monthly 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 3 pm on Monday 3 December 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 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.

Further information

Media
(03) 9669 4057
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