Victoria in November 2009:

Record heatwave early in month, then cooler and wet.

An exceptionally prolonged heatwave has affected large parts of Victoria during November 2009, resulting in the month being the hottest November on record for many areas. Temperatures well above average began to influence much of the region on the weekend of 7-8 November. The hot spell continued largely unbroken, except in the south, until 15 November. Slightly cooler conditions then prevailed on 16-17 November, before the heat returned from the 18th, with the highest temperatures of the whole event between November 18 and 20. The most intense heat of the event broke down across Victoria from the 20th onwards as a trough crossed the region, bringing widespread substantial rain on the 21st and 22nd. Conditions were relatively cool after that, with temperatures mostly close to normal through the last week of the month.

The first stage of the event, broadly from 7-15 November, was more exceptional for its duration than its intensity. Few records were set for individual high temperatures, but many were set for the number of consecutive days above high temperature thresholds such as 35 or 40C. Prolonged hot spells are rare in November, compared with summer and early autumn, in southern Australia for a number of reasons; most significantly, that the subtropical high pressure belt is normally much further north in November than it is between December and March, allowing frontal systems to influence the southern continent on a regular basis instead of passing to the south as is more typical later in the summer. Individual November record high temperatures became much more widespread in the second stage of the event, from the 18th onwards.

As a result of the prolonged heatwave, mean monthly temperatures, both maxima and minima, were exceptionally high over much of south-eastern Australia. The mean monthly temperature for Victoria was 4.36C above normal, breaking the previous record. The duration of this event was exceptional, especially in parts of western Victoria, with records for consecutive days above 30C set in northern and western Victoria (e.g. Nhill, Bendigo, Kerang). Melbourne missed out on equalling its November record of six consecutive days above 30C when the temperature peaked at 29.8C on the 12th.

Monthly mean maximum temperatures were at least 5C above normal over most of Victoria, except for the coastal fringe. Overnight minimum temperatures were slightly less extreme, but still 4 to 6C over much of northern Victoria.

Monthly mean temperature anomalies were well beyond anything previously experienced in the historical record, Victoria's mean temperature anomaly being +4.36C. In Victoria, November was hotter than a normal January, and Victorias mean monthly temperature of 20.39C has been surpassed by only one December (1994).

Records were also set for maximum temperatures, with Victoria (+4.92C). The set of records was completed by minimum temperatures, with Victoria (+3.81C). The Victorian anomalies were records for any month.

At the station level, 136 long-term Australian stations had their highest mean maximum temperature on record for November, and 118 had their highest mean minimum temperature. Of these stations, 80 had their largest monthly maximum temperature anomaly on record for any month, and 49 their largest monthly minimum temperature anomaly. Maximum temperature records covered 16% of  Australia, including all of Victoria, while minimum temperature records covered 9% of Australia, including 88% of Victoria.

Despite more moderate conditions in September and October, the exceptional November was sufficient to lift mean spring temperatures to record levels in Victoria.

Synoptic Patterns

The main feature of synoptic patterns during the month is reflected in the pattern of Mean Sea Level Pressure (MSLP) anomalies (shown below). An anomalous ridge of high pressure prevailed over an area extending from the Tasman Sea to the south of Tasmania. This feature directed very warm air from the north and northeast across the State.

Rainfall

Some sites had their highest total November rainfall on record.

Some sites had their highest total November rainfall for at least 20 years.

Some sites had their lowest total November rainfall on record.

Temperature

Some sites had their highest November temperature on record.

Some sites had their highest November mean daily maximum temperature on record.

Some sites had their highest November mean daily maximum temperature for at least 20 years.

Minimum temperature

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

Some sites had their highest November mean daily minimum temperature on record.

Some sites had their highest November mean daily minimum temperature for at least 20 years.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in November 2009
Hottest day 42.1 C at Mildura Airport on the 18th
Warmest days on average 32.5 C at Mildura Airport
32.5 C at Walpeup Research
Coolest days on average 15.5 C at Mount Hotham
Coldest day 4.6 C at Mount Hotham on the 30th
Coldest night -1.7 C at Mount Baw Baw on the 23rd
Coolest nights on average 7.8 C at Mount Hotham
Warmest nights on average 17.3 C at Mildura Airport
Warmest night

28.1 C at Melbourne CBD on the 19th

26.9 C at Mildura Airport on the 20th

Wettest overall 191.0 mm at Cudgewa Ck @ Berringama
Highest wind gust 126 km/h at Wilsons Promontory Lighthouse on the 3rd

Record highest total November rainfall
Total rainfall
for November 2009 (mm)
Previous highest
for November
Years of
record
Average for
November
Warracknabeal Museum 89.0 76.8 in 1976 41 31.7

Highest total November rainfall for at least 20 years
Total rainfall
for November 2009 (mm)
Most recent higher
for November
Years since
higher
Average for
November
Wedderburn (Post Office) 95.0 155.6 in 1887 121 33.5
St Arnaud 112.2 115.6 in 1903 104 35.4
Natte Yallock 95.0 116.2 in 1924 85 33.7
Woomelang 100.4 114.7 in 1924 85 27.8
Maryborough 100.6 134.1 in 1933 76 39.2
Daylesford 138.6 156.5 in 1952 56 60.9
Trentham (Post Office) 173.6 177.6 in 1960 49 74.9
Beulah 81.2 95.3 in 1960 46 29.5
Korong Vale (Burnbank) 82.6 85.4 in 1965 44 33.5
Werrimull 67.0 100.9 in 1961 43 23.4
Yanac North 75.8 76.0 in 1970 39 29.4
Kaniva 71.4 97.3 in 1970 38 32.2
Jeparit 68.0 68.2 in 1976 32 28.6
Ballarat Aerodrome 113.0 131.1 in 1978 31 55.8
Bannockburn 108.2 145.6 in 1978 31 48.3
Clunes 99.8 100.4 in 1978 31 45.7
Horsham Polkemmet Rd 57.6 72.6 in 1983 26 33.7
Melbourne Airport 115.0 158.0 in 1988 20 61.0
Patchewollock 56.8 68.8 in 1988 20 25.7






Record highest November temperature
Highest temperature
in November 2009 (C)
Previous highest
for November
Years of
record
Average for
November
Tatura Inst Sustainable Ag 40.3 on the 19th = 40.3 on the 20th in 2007 45 24.5
Lake Eildon 38.9 on the 19th 38.6 on the 24th in 1982 40 23.2
Strathbogie 37.2 on the 19th 37.0 on the 24th in 1982 31 21.3
Morwell (Latrobe Valley Airport) 38.6 on the 20th 38.0 on the 21st in 2006 25 21.6
Edi Upper 39.2 on the 19th 37.0 on the 26th in 1997 24 23.4
Mount Buller 26.1 on the 19th 24.1 on the 20th in 2007 23 12.0
Wangaratta Aero 41.4 on the 19th 41.0 on the 26th in 1997 23 25.4



Record highest November mean daily maximum temperature
Mean daily maximum
temperature
for November 2009 (C)
Previous highest
for November
Years of
record
Average for
November
Melbourne Regional Office 27.1 25.5 in 1862 154 21.9
Horsham Polkemmet Rd 31.2 31.0 in 1902 101 24.7
Ballarat Aerodrome 25.1 24.9 in 1982 100 19.5
Kerang 31.7 31.2 in 1914 99 26.6
Rutherglen Research 30.8 30.1 in 1914 96 25.2
Longerenong 30.9 29.2 in 1982 75 24.5
Ouyen (Post Office) 32.4 31.7 in 1982 72 27.2
Orbost (Comparison) 26.3 24.7 in 1982 70 21.5
Laverton RAAF 25.8 25.2 in 1982 66 21.4
East Sale Airport 25.9 25.3 in 1982 64 21.2
Mildura Airport 32.5 31.5 in 1982 63 27.4
Walpeup Research 32.5 31.2 in 1982 59 26.6
Casterton Showgrounds 27.5 26.3 in 1982 49 21.7
Scoresby Research Institute 26.2 25.1 in 1982 49 21.2
Tatura Inst Sustainable Ag 30.0 28.7 in 1982 44 24.5
Kyabram DPI 31.4 29.5 in 1982 42 24.8
Ararat Prison 27.1 26.4 in 1982 40 21.2
Essendon Airport 26.8 24.4 in 2005 39 21.5
Lake Eildon 28.8 27.4 in 1982 39 23.2
Melbourne Airport 26.8 26.2 in 1982 39 21.7
Wonthaggi 23.8 22.1 in 2005 39 19.8
Moorabbin Airport 25.7 24.9 in 1982 38 21.4
Warracknabeal Museum 31.2 30.1 in 1982 37 25.6
Bairnsdale Airport 26.1 24.3 in 1997 29 21.5
Weeaproinah 21.0 19.1 in 1982 28 16.0
Portland (Cashmore Airport) 22.3 20.9 in 1982 27 18.4
Hamilton Airport 26.7 23.4 in 2006 26 20.6
Noojee (Slivar) 25.4 24.2 in 1982 26 20.5
Bundoora (Latrobe University) 27.2 26.0 in 1982 25 22.2
Morwell (Latrobe Valley Airport) 27.0 24.4 in 2005 24 21.6
Mount Buller 16.8 14.7 in 2006 22 12.0
Wangaratta Aero 30.6 29.2 in 2002 22 25.4
Beechworth Woolshed 29.4 27.7 in 2007 20 24.3

Highest November mean daily maximum temperature for at least 20 years
Mean daily maximum
temperature
for November 2009 (C)
Most recent higher
for November
Years since
higher
Average for
November
Gabo Island Lighthouse 21.7 22.4 in 1894 115 18.3
Wilsons Promontory Lighthouse 20.3 20.6 in 1901 108 17.1
Echuca Aerodrome 31.5 32.1 in 1902 107 26.0
Cape Otway Lighthouse 20.8 22.4 in 1907 102 18.3
Maryborough 28.9 29.4 in 1902 99 23.6
Mangalore Airport 30.0 30.1 in 1982 27 24.2
Castlemaine Prison 27.6 27.7 in 1982 24 22.5
Dartmouth Reservoir 27.9 28.7 in 1982 22 23.7
Strathbogie 26.2 26.4 in 1982 22 21.3



Record highest November daily minimum temperature
Highest daily minimum
temperature
in November 2009 (C)
Previous highest
for November
Years of
record
Average for
November
Kerang 25.5 on the 20th 24.7 on the 27th in 1997 46 11.2
Kyabram DPI 21.2 on the 20th 21.1 on the 3rd in 2005 43 10.1
Walpeup Research 26.1 on the 20th 25.4 on the 30th in 1982 42 11.2
Warracknabeal Museum 25.0 on the 20th 24.2 on the 13th in 2008 38 10.0
Weeaproinah 21.2 on the 20th = 21.2 on the 2nd in 1987 29 8.1
Portland (Cashmore Airport) 18.7 on the 20th 18.1 on the 30th in 2003 28 9.7
Mount Buller 18.8 on the 20th 17.9 on the 26th in 1997 23 4.4


28.1 C at Melbourne CBD on the 19th was the highest overnight minimum temperature on record.



Record highest November mean daily minimum temperature
Mean daily minimum
temperature
for November 2009 (C)
Previous highest
for November
Years of
record
Average for
November
Melbourne Regional Office 15.9 15.2 in 2000 154 11.1
Wilsons Promontory Lighthouse 14.0 13.8 in 2000 130 11.2
Gabo Island Lighthouse 15.3 15.1 in 2000 126 12.7
Maryborough 13.6 12.2 in 2000 102 9.4
Ballarat Aerodrome 11.2 10.7 in 2000 100 7.7
Kerang 15.7 14.7 in 1914 99 11.2
Longerenong 12.5 11.4 in 2000 76 8.9
Ouyen (Post Office) 16.3 14.6 in 2000 72 11.4
Laverton RAAF 13.8 13.2 in 2000 66 10.0
East Sale Airport 12.0 = 12.0 in 2000 64 9.5
Mildura Airport 17.3 15.1 in 2000 63 12.4
Walpeup Research 15.9 14.4 in 2000 59 11.2
Scoresby Research Institute 13.3 13.2 in 2000 50 10.2
Casterton Showgrounds 11.9 = 11.9 in 2000 49 8.8
Mangalore Airport 13.6 12.9 in 2000 49 9.8
Tatura Inst Sustainable Ag 13.7 13.4 in 2000 44 10.1
Kyabram DPI 14.5 13.3 in 2000 42 10.1
Ararat Prison 11.3 10.4 in 2007 40 7.6
Castlemaine Prison 13.6 11.7 in 2000 40 9.0
Point Hicks (Lighthouse) 15.1 14.8 in 2000 40 12.6
Essendon Airport 14.1 12.7 in 2007 39 9.7
Lake Eildon 13.2 12.1 in 2000 39 9.1
Melbourne Airport 13.8 13.1 in 2000 39 10.2
Wonthaggi 12.8 12.7 in 2000 39 10.2
Moorabbin Airport 13.8 13.5 in 2000 38 10.9
Warracknabeal Museum 14.4 13.4 in 1990 37 10.0
Dartmouth Reservoir 13.0 12.7 in 2000 29 9.5
Strathbogie 10.6 10.5 in 2000 29 7.3
Weeaproinah 11.9 10.7 in 2000 28 8.1
Portland (Cashmore Airport) 12.3 11.9 in 2000 27 9.7
Hamilton Airport 11.6 10.3 in 2000 26 7.9
Noojee (Slivar) 11.4 10.9 in 2000 26 8.3
Bundoora (Latrobe University) 14.0 13.4 in 2000 25 10.5
Mount Buller 8.9 7.2 in 2007 22 4.4

Highest November mean daily minimum temperature for at least 20 years
Mean daily minimum
temperature
for November 2009 (C)
Most recent higher
for November
Years since
higher
Average for
November
Cape Otway Lighthouse 13.5 14.0 in 1897 111 10.6
Echuca Aerodrome 14.8 15.0 in 1914 95 11.1
Rutherglen Research 13.1 14.4 in 1914 94 8.6
Horsham Polkemmet Rd 11.8 11.9 in 1966 38 9.4



Summary statistics for November 2009
Maximum temperatures
for November
(C)
Minimum temperatures
for November
(C)
Rainfall
for November
(millimetres)
Mean for
November
2009
Diff
from
average
Highest for
November
2009
Mean for
November
2009
Diff
from
average
Lowest for
November
2009
Total for
November
2009
Average
for
November
Rank of
November
2009
Fraction of
November
average
North Mallee (district 76)
Mildura Airport 32.5 +5.1 42.1 18th 17.3 +4.8 8.3 5th 63.2 25.0 v high 253%
Ouyen (Post Office) 32.4 +5.1 41.9 19th 16.3 +4.9 6.6 5th 68.4 27.9 v high 245%
Walpeup Research 32.5 +5.9 41.8 12th 15.9 +4.7 5.5 5th 54.2 27.4 high 198%
South Mallee (district 77)
Hopetoun Airport 32.4   41.6 11th 14.7   5.6 4th 88.0
Swan Hill Aerodrome 32.3 +4.6 41.7 19th 15.6 +4.2 6.7 5th 79.6 48.2 high 165%
North Wimmera (district 78)
Nhill Aerodrome 31.0   39.8 15th 13.7   4.2 6th 69.0
Warracknabeal Museum 31.2 +5.7 40.2 19th 14.4 +4.4 5.6 4th 89.0 31.7 highest 281%
South Wimmera (district 79)
Edenhope Airport 28.5   37.2 19th 12.8   4.0 6th 36.8
Grampians (Mount William) 19.8   28.5 19th 10.8   1.5 4th 81.0
Horsham Aerodrome 30.4 +4.5 39.1 11th 11.9 +3.7 2.7 6th 61.8 31.9 v high 194%
Horsham Polkemmet Rd 31.2 +6.4 40.2 11th 11.8 +2.4 2.2 6th 57.6 33.7 high 171%
Kanagulk 29.1   37.9 19th 11.7   4.0 6th 41.8
Longerenong 30.9 +6.4 39.4 14th 12.5 +3.6 4.1 4th 62.4 30.8 high 203%
Pyrenees (Ben Nevis) 23.0   32.7 10th 12.7   3.5 4th 105.4
Stawell Aerodrome 28.7 +5.3 37.8 11th 13.3 +3.9 7.0 23rd 80.6 45.0 high 179%
Lower North (district 80)
Charlton 32.0   41.1 11th 14.4   5.3 6th 89.4
Echuca Aerodrome 31.5 +5.5 41.1 19th 14.8 +3.7 8.0 4th 52.0 32.6 high 160%
Kerang 31.7 +5.1 41.4 11th 15.7 +4.5 7.5 5th 98.4 29.5 v high 334%
Kyabram DPI 31.4 +6.6 41.8 19th 14.5 +4.4 6.2 4th 80.2 38.1 v high 210%
Upper North (district 81)
Bendigo Airport 29.8 +5.8 38.8 19th 13.9 +4.6 6.7 5th 61.0 45.3 average 135%
Shepparton Airport 31.2 +5.5 41.2 19th 14.1 +3.9 7.4 6th 62.6 53.9 average 116%
Tatura Inst Sustainable Ag 30.0 +5.6 40.3 19th 13.7 +3.6 7.2 5th 65.4 40.2 high 163%
Yarrawonga 32.1 +5.4 42.0 19th 15.0 +4.2 7.1 5th 57.2 43.2 high 132%
Lower Northeast (district 82)
Beechworth Woolshed 29.4 +5.1 39.1 19th 11.9 +3.6 2.4 5th 90.4 59.6 high 152%
Benalla Airport 30.4   41.1 19th 13.4   6.5 6th 61.3
Corryong Airport 29.4   34.4 15th 11.7   3.1 5th 65.4
Dartmouth Reservoir 27.9 +4.2 35.1 19th 13.0 +3.5 7.5 6th 77.0 66.7 high 115%
Hunters Hill 24.0 +4.7 31.2 19th 14.3 +4.7 7.2 5th 72.6 91.2 average 80%
Rutherglen Research 30.8 +5.5 40.6 19th 13.1 +4.5 4.6 5th 64.2 44.8 high 143%
Strathbogie 26.2 +4.9 37.2 19th 10.6 +3.3 3.6 6th 66.2 63.8 average 104%
Wangaratta Aero 30.6 +5.3 41.4 19th 12.3 +3.1 5.3 6th 56.8 54.4 average 104%
Upper Northeast (district 83)
Dinner Plain (Mount Hotham Airport) 21.4   29.5 20th 8.7   -0.3 23rd 82.4 85.1 average 97%
Falls Creek 17.1 +4.9 23.4 19th 8.5 +4.7 0.7 5th 146.6 120.5 average 122%
Mount Buller 16.8 +4.8 26.1 19th 8.9 +4.5 -0.4 4th 137.8 123.3 average 112%
Mount Hotham 15.5 +4.6 22.9 20th 7.8 +4.3 -0.5 5th 184.4 131.8 average 140%
Omeo 25.6   34.2 19th 10.1   2.1 6th 60.6
East Gippsland (district 84)
Combienbar AWS 26.3 +5.8 36.6 19th 13.8 +4.3 6.7 5th 45.8 114.2 v low 40%
Gabo Island Lighthouse 21.7 +3.3 29.1 20th 15.3 +2.6 11.3 6th 38.2 72.8 low 52%
Gelantipy 24.2 +5.5 34.1 20th 11.6 +4.0 5.2 6th 89.8 99.7 average 90%
Lakes Entrance (Eastern Beach Road) 23.6   37.9 19th 13.5   6.6 6th 23.0
Mallacoota 24.7 +4.5 37.0 20th 14.2 +2.6 8.8 6th 38.0 86.7 low 44%
Mount Nowa Nowa 25.4 +4.8 37.4 19th 14.3 +3.8 7.7 6th 64.8 86.6 average 75%
Orbost 25.8   39.8 19th 13.3   5.8 6th 55.0 80.0 low 69%
Orbost (Comparison) 26.3 +4.8 39.6 19th 12.2 +2.0 4.2 6th 52.0 72.5 average 72%
Point Hicks (Lighthouse) 24.3 +4.2 35.0 20th 15.1 +2.5 11.0 6th 49.4 80.4 average 61%
West Gippsland (district 85)
Bairnsdale Airport 26.1 +4.7 38.8 19th 12.1 +2.7 4.4 6th 44.0 82.0 low 54%
East Sale Airport 25.9 +4.8 36.2 20th 12.0 +2.5 6.3 6th 41.2 62.7 average 66%
Morwell (Latrobe Valley Airport) 27.0 +5.4 38.6 20th 11.5 +2.1 3.8 6th 67.4 75.0 average 90%
Mount Moornapa 26.0 +5.3 37.4 20th 13.6 +4.0 6.9 5th 83.2 116.7 average 71%
Noojee (Slivar) 25.4 +4.9 35.0 20th 11.4 +3.1 5.1 6th 67.4 100.3 low 67%
Pound Creek 23.2   34.9 20th 11.2   1.9 6th 66.4
Wilsons Promontory Lighthouse 20.3 +3.1 33.6 20th 14.0 +2.8 10.1 4th 79.2 70.9 average 112%
Yarram Airport 24.9   38.2 20th 10.8   0.6 6th 73.6
East Central (district 86)
Bundoora (Latrobe University) 27.2 +5.0 38.0 20th 14.0 +3.5 5.7 6th 101.4 68.2 high 149%
Cerberus 23.9 +3.8 36.8 20th 12.4 +2.0 8.3 7th 86.2 51.1 high 169%
Coldstream 26.5 +4.2 35.4 20th 11.5 +3.1 2.3 6th 58.6 67.0 average 87%
Coldstream Comparison 26.8   35.6 20th 11.4   2.3 6th 58.6
Cranbourne Botanic Gardens 24.6 +3.8 35.9 20th 12.3 +2.1 5.6 6th 82.4 72.6 average 113%
Essendon Airport 26.8 +5.3 38.1 20th 14.1 +4.4 7.4 6th 97.0 57.8 high 168%
Ferny Creek (Dunns Hill) 22.5 +4.8 31.6 20th 12.3 +3.5 2.3 30th 114.2 103.2 high 111%
Frankston AWS 24.1 +4.2 33.4 10th 14.8 +2.9 9.3 6th
Melbourne Airport 26.8 +5.1 38.0 20th 13.8 +3.6 6.8 6th 115.0 61.0 v high 189%
Melbourne Regional Office 27.1 +5.2 38.3 20th 15.9 +4.7 9.4 6th 100.2 59.7 high 168%
Moorabbin Airport 25.7 +4.3 37.4 20th 13.8 +2.9 6.2 6th 81.8 61.8 high 132%
Rhyll 23.1 +3.4 33.3 20th 14.5 +2.5 10.1 4th 65.2 56.4 average 116%
Scoresby Research Institute 26.2 +5.0 36.4 20th 13.3 +3.1 4.9 6th 112.8 80.6 high 140%
Viewbank (ARPANSA) 27.8 +3.7 38.4 20th 13.8   5.2 6th 117.4
Wallan (Kilmore Gap) 24.8 +5.7 34.2 20th 12.6 +4.0 4.8 6th 88.0 64.3 high 137%
Wonthaggi 23.8 +4.1 35.6 20th 12.8 +2.6 5.0 6th 72.6 69.2 average 105%
West Central (district 87)
Avalon Airport 25.7 +3.7 37.8 20th 12.7 +2.3 7.6 6th 80.2 44.6 high 180%
Grovedale (Geelong Airport) 25.0 +4.5 34.9 9th 11.2 +1.8 4.8 6th 90.4 51.4 high 176%
Laverton RAAF 25.8 +4.4 38.3 20th 13.8 +3.7 7.7 4th 78.6 51.4 high 153%
Sheoaks 26.0 +5.5 35.5 11th 11.8 +3.1 2.0 6th 103.4 63.4 high 163%
North Central (district 88)
Castlemaine Prison 27.6 +5.1 36.4 19th 13.6 +4.6 6.5 4th 85.0 46.4 v high 183%
Eildon Fire Tower 25.7 +5.2 36.2 19th 13.5 +4.2 5.1 5th 58.0 50.9 average 114%
Lake Eildon 28.8 +5.5 38.9 19th 13.2 +4.1 5.9 6th 63.0 67.2 average 94%
Mangalore Airport 30.0 +5.8 40.5 19th 13.6 +3.8 7.5 4th 55.6 46.4 high 120%
Maryborough 28.9 +5.3 37.6 11th 13.6 +4.2 5.2 6th 100.6 39.2 v high 257%
Redesdale 28.4 +5.4 38.4 19th 12.1 +4.0 5.1 5th 75.6 40.4 high 187%
Western Plains (district 89)
Ararat Prison 27.1 +6.0 36.1 19th 11.3 +3.7 3.3 6th 71.6 45.3 high 158%
Ballarat Aerodrome 25.1 +5.5 33.7 19th 11.2 +3.5 5.7 24th 113.0 55.8 v high 203%
Westmere 27.0   35.9 10th 10.3   0.4 6th 71.0
West Coast (district 90)
Aireys Inlet 22.1 +2.8 33.8 8th 13.4 +2.6 8.3 4th 84.8 62.1 high 137%
Cape Nelson Lighthouse 21.7 +3.6 35.9 8th 14.2 +2.5 10.5 4th 57.0 44.7 average 128%
Cape Otway Lighthouse 20.8 +2.5 32.8 19th 13.5 +2.8 8.6 15th 58.4 63.8 average 92%
Casterton 26.4   35.0 19th 11.8   4.6 23rd 48.0
Casterton Showgrounds 27.5 +5.8 36.4 11th 11.9 +3.2 3.0 6th 56.8 47.2 average 120%
Colac (Mount Gellibrand) 24.3   33.3 11th 12.2   5.9 23rd 64.4 47.5 average 136%
Dartmoor 26.7   35.6 11th 12.1   2.5 6th 35.8
Hamilton Airport 26.7 +6.1 35.4 19th 11.6 +3.7 2.2 6th 46.4 49.7 average 93%
Mortlake Racecourse 25.6 +5.3 34.6 10th 11.0 +3.4 2.2 6th 48.4 51.6 average 94%
Port Fairy AWS 22.8 +3.3 35.6 8th 13.1 +2.1 7.4 6th 60.0 47.8 average 126%
Portland (Cashmore Airport) 22.3 +3.9 32.4 19th 12.3 +2.6 7.2 6th 64.4 53.5 average 120%
Warrnambool Airport NDB 24.4 +4.3 33.7 9th 11.5 +2.8 2.8 6th 47.0 56.7 average 83%
Weeaproinah 21.0 +4.9 30.0 10th 11.9 +3.7 5.2 6th 145.0 139.3 average 104%

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Victoria 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 2 pm on Tuesday 1 December 2009. 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
Enquiries