Monday, 5 January 2009 - Monthly Climate Summary for Victoria - Product code IDCKGC26R0

Victoria in December 2008
Coolish and wet

Summary

December 2008 was coolish and wet across most of Victoria. Daytime temperatures were about 2 deg C below the long-term normals, whilst overnight temperatures were about 1 deg C below the long-term normals. Many places exceeded their usual December rainfall by more than 25%.An archive of previous monthly summaries for Victoria is also available, as are summaries for other states and many other climate summaries and diagnostics.

Rainfall

The wettest overall was 265.6 mm at Haines Junction (Mount Sabine).Some sites had their highest total December rainfall on record. Some sites had their highest total December rainfall for at least 20 years. The wettest single day 110.2 mm at Haines Junction (Mount Sabine) on the 14th. There is a map of total rainfall below. There is a map of rainfall deciles below.

Maximum temperature

The hottest day was 38.1°C at Hopetoun Airport on the 26th. The warmest days on average were 28.7°C at Mildura Airport. The coolest days on average were 11.1°C at Mount Hotham. The coldest day was 2.8°C at Mount Hotham on the 14th. Some sites had their coldest December day (lowest maximum temperature) on record. Some sites had their lowest December mean daily maximum temperature for at least 20 years. There is a map of mean maximum temperatures below. There is a map of maximum temperature anomalies below.

Minimum temperature

The coldest night was −3.3°C at Dinner Plain (Mount Hotham Airport) on the 20th, followed by −3.3°C at Mount Hotham on the 20th. The coolest nights on average were 3.7°C at Mount Hotham. The warmest nights on average were 14.4°C at Mildura Airport. The warmest night was 21.4°C at Hopetoun Airport on the 22nd. Some sites had their lowest December temperature on record. There is a map of mean minimum temperatures below. There is a map of minimum temperature anomalies below.

Wind

The strongest wind gust was 120 km/h at Wilsons Promontory Lighthouse on the 19th.

Further information

Dr Harvey Stern
Climate Meteorologist
Victoria Climate Services Centre
Bureau of Meteorology
Phone (03) 9669 4956
Email climate.vic@bom.gov.au

Extremes

Hottest day
Highest temperature
38.1°C at Hopetoun Airport on the 26th
Warmest days on average
Highest mean daily maximum temperature
28.7°C at Mildura Airport
Coolest days on average
Lowest mean daily maximum temperature
11.1°C at Mount Hotham
Coldest day
Lowest daily maximum temperature
2.8°C at Mount Hotham on the 14th
Coldest night
Lowest temperature
−3.3°C at Dinner Plain (Mount Hotham Airport) on the 20th
−3.3°C at Mount Hotham on the 20th
Coolest nights on average
Lowest mean daily minimum temperature
3.7°C at Mount Hotham
Warmest nights on average
Highest mean daily minimum temperature
14.4°C at Mildura Airport
Warmest night
Highest daily minimum temperature
21.4°C at Hopetoun Airport on the 22nd
Wettest overall
Highest total rainfall
265.6 mm at Haines Junction (Mount Sabine)
Wettest day
Highest daily rainfall
110.2 mm at Haines Junction (Mount Sabine) on the 14th
Highest wind gust
120 km/h at Wilsons Promontory Lighthouse on the 19th

Maps

Anomaly in mean maximum temperature

Map of Anomaly in mean maximum temperature

Mean maximum temperature

Map of Mean maximum temperature

Anomaly in mean minimum temperature

Map of Anomaly in mean minimum temperature

Mean minimum temperature

Map of Mean minimum temperature

Rainfall deciles

Map of Rainfall deciles

Rainfall totals

Map of Rainfall totals


Records

Record highest total December rainfall
Total rainfall
for December 2008 (mm)
Previous highest
for December
Years of
record
Average for
December
Caramut 129.2 98.9 in 1966 50 45.4
Portland (Cashmore Airport) 114.6 113.8 in 1985 27 49.8

Highest total December rainfall for at least 20 years
Total rainfall
for December 2008 (mm)
Most recent higher
for December
Years since
higher
Average for
December
Wickliffe 97.6 121.0 in 1966 41 37.8
Apollo Bay 139.6 175.0 in 1985 23 63.9
Cavendish (Post Office) 107.2 119.0 in 1985 23 40.6
Glenthompson 98.3 111.4 in 1985 23 43.1
Hamilton Airport 109.0 147.8 in 1985 23 44.3
Hawkesdale (Post Office) 121.6 179.0 in 1985 23 47.1
Casterton Showgrounds 132.8 137.6 in 1986 22 41.1
Heywood Forestry 116.3 144.4 in 1986 22 50.2
Nelson 106.2 111.4 in 1986 22 40.3
Apsley (Post Office) 90.5 118.4 in 1986 21 32.3
Harrow (Post Office) 95.3 112.5 in 1986 21 33.2
Merino 118.4 149.4 in 1986 21 42.3
Avalon Airport 61.8 112.0 in 1978 20 31.6
Buchan 136.4 145.6 in 1988 20 74.5







Record lowest December daily maximum temperature
Lowest daily maximum
temperature
in December 2008 (°C)
Previous lowest
for December
Years of
record
Average for
December
Portland (Cashmore Airport) 12.4 on the 13th 12.5 on the 7th in 1982 27 20.1



Lowest December mean daily maximum temperature for at least 20 years
Mean daily maximum
temperature
for December 2008 (°C)
Most recent lower
for December
Years since
lower
Average for
December
Walpeup Research 27.4 27.1 in 1956 41 29.8
Mount Buller 12.0 11.5 in 1985 20 14.6



Record lowest December temperature
Lowest temperature
in December 2008 (°C)
Previous lowest
for December
Years of
record
Average for
December
Phillip Island Penguin Reserve 1.7 on the 4th 3.6 on the 8th in 1982 21 11.8
Grovedale (Geelong Airport) 3.3 on the 4th 3.8 on the 1st in 1994 20 11.0



Summaries

In this table, key sites have been highlighted to make them easier to find. This table is very wide and may not fit if printed.

Summary statistics for December 2008
Maximum temperatures
for December
(°C)
Minimum temperatures
for December
(°C)
Rainfall
for December
(millimetres)
Mean for
December
2008
Diff
from
average
Highest for
December
2008
Mean for
December
2008
Diff
from
average
Lowest for
December
2008
Total for
December
2008
Average
for
December
Rank of
December
2008
Fraction of
December
average
North Mallee (district 76)
Mildura Airport 28.7 −1.4 37.9 22nd 14.4 −0.4 9.6 15th 34.2 23.5 high 146%
Ouyen 28.1 −2.1 37.7 26th 13.1 −0.5 8.4 15th 78.2 24.6 very high 318%
Walpeup Research 27.4 −2.4 37.6 26th 12.6 −0.9 6.6 7th 31.2 23.3 high 134%
South Mallee (district 77)
Hopetoun Airport 27.8   38.1 26th 11.7   5.9 2nd 36.0
Swan Hill Aerodrome 28.0 −2.3 38.0 22nd 13.1 −0.1 8.6 2nd 47.2 23.4 very high 202%
North Wimmera (district 78)
Nhill 25.4 −2.5 35.5 26th 10.9 −0.6 3.2 8th 42.4 26.2 high 162%
Nhill Aerodrome 25.7   35.8 26th 11.4   4.2 7th 38.4
Warracknabeal Museum 26.3 −2.3 36.0 26th 11.9 −0.2 6.0 7th 56.0 25.6 high 219%
South Wimmera (district 79)
Edenhope Airport 23.2   32.5 26th 10.9   3.2 8th 90.8
Grampians 14.7   23.7 26th 5.6   1.2 7th 143.6
Horsham Aerodrome 25.3 −3.4 34.9 26th 10.5 +0.2 3.4 8th 68.2 27.7 high 246%
Horsham Polkemmet Rd 25.4 −2.3 35.2 26th 10.9 −0.7 4.2 8th 68.0 27.7 very high 245%
Kanagulk 23.8   32.7 26th 10.2   2.8 8th 69.4
Longerenong 25.4 −2.2 35.5 26th 10.9 −0.3 2.9 7th 72.8 27.3 very high 267%
Pyrenees 18.8   27.2 26th 7.9   3.4 7th 97.4
Stawell Aerodrome 24.1 −2.4 32.9 26th 11.1 +0.1 5.3 8th 68.0 32.3 very high 211%
Lower North (district 80)
Charlton 26.6   36.1 26th 12.3   6.9 8th 58.4
Echuca Aerodrome 26.8 −2.2 36.2 22nd 12.5 −1.0 7.0 20th 67.4 28.8 high 234%
Kerang 27.8 −1.9 37.7 22nd 12.9 −0.5 8.3 15th 62.0 27.5 very high 225%
Kyabram DPI 26.0 −1.9 35.1 22nd 11.8 −0.6 6.8 8th 66.2 32.4 high 204%
Upper North (district 81)
Bendigo Airport 25.3 −1.8 35.0 22nd 11.0 −0.5 6.2 2nd 56.6 41.8 average 135%
Shepparton Airport 26.4 −2.5 35.6 22nd 11.9 −0.4 5.5 20th 47.4 28.8 high 165%
Tatura Inst Sustainable Ag 25.7 −1.6 34.9 22nd 11.1 −1.1 5.4 2nd 47.0 33.6 high 140%
Yarrawonga 27.3 −2.6 35.4 22nd 13.3 +0.3 7.5 20th 48.2 35.0 average 138%
Lower Northeast (district 82)
Beechworth Woolshed 26.0 −1.5 32.2 26th 10.1 −0.4 2.2 8th 52.2 59.2 average 88%
Benalla Airport 26.7   34.8 22nd 11.7   4.9 2nd 39.1
Corryong Airport 26.9   33.6 26th 10.3   3.4 9th 52.4
Dartmouth Reservoir 25.4 −1.4 31.0 28th 11.5 −0.1 5.5 2nd 64.6 74.6 average 87%
Hunters Hill 20.5 −2.2 27.8 26th 10.7 −1.1 4.3 20th 103.6 78.2 high 132%
Rutherglen Research 26.9 −2.3 33.7 22nd 11.9 +0.4 4.6 20th 59.8 43.7 high 137%
Strathbogie 21.9 −2.8 29.9 26th 8.9 −0.4 2.0 2nd 86.0 56.0 high 154%
Wangaratta Aero 27.1 −2.0 34.1 27th 11.4 −0.1 4.7 4th 48.8 40.2 average 121%
Upper Northeast (district 83)
Dinner Plain 17.5   23.1 26th 5.9   −3.3 20th 61.8
Falls Creek 12.6 −2.6 19.0 23rd 4.8 −1.3 −2.0 20th 148.2 105.7 high 140%
Mount Buller 12.0 −2.6 18.4 22nd 4.6 −1.5 −1.9 19th 140.0 95.7 high 146%
Mount Hotham 11.1 −2.7 16.6 23rd 3.7 −1.8 −3.3 20th 147.8 96.9 high 153%
Omeo 21.8   29.9 26th 9.1   1.7 20th 29.4
Omeo Comparison 20.8 −3.4 28.9 28th 9.1 +0.8 2.1 20th 30.0 60.4 low 50%
East Gippsland (district 84)
Combienbar AWS 20.5 −2.5 30.4 27th 10.3 −0.9 6.3 20th 80.0 78.3 average 102%
Gabo Island Lighthouse 20.3 +0.4 25.9 13th 14.3 0.0 11.1 2nd 55.0 67.2 average 82%
Gelantipy 19.0 −2.3 27.2 26th 9.0 −0.4 3.3 20th 87.0 60.9 high 143%
Lakes Entrance 21.6   32.3 22nd 12.4   8.0 9th 89.4
Mallacoota 21.3 −0.5 32.1 13th 13.0 −0.3 8.2 4th 80.8 73.2 average 110%
Mount Nowa Nowa 20.6 −1.6 31.3 22nd 11.3 −0.5 6.9 20th 149.8 83.4 high 180%
Orbost 21.9   32.4 27th 12.3   8.1 2nd 117.0
Orbost 22.3 −1.2 32.7 22nd 12.1 +0.3 6.9 2nd 116.0 77.9 high 149%
Point Hicks 22.2 +0.3 34.0 27th     10.4 19th 51.1 73.1 average 70%
West Gippsland (district 85)
Bairnsdale Airport 22.2 −1.3 30.9 5th 11.4 +0.4 6.4 4th 60.8 59.4 average 102%
East Sale Airport 22.3 −1.0 31.6 22nd 10.8 −0.4 5.0 20th 41.6 54.1 average 77%
Morwell 23.4 −0.6 33.1 22nd 10.6 −0.6 3.8 11th 80.4 68.6 average 117%
Mount Baw Baw 11.4   18.8 22nd 4.1   −1.1 20th 65.2
Mount Moornapa 21.1 −1.6 30.1 27th 10.3 −0.8 5.7 20th 45.4 50.6 low 90%
Noojee 21.4 −1.1 30.2 22nd 9.3 −0.4 2.9 20th 118.2 95.2 average 124%
Pound Creek 20.7   31.8 22nd 9.9   1.3 11th 90.4
Wilsons Promontory Lighthouse 17.9 −0.8 29.5 22nd 12.7 +0.1 9.8 19th 95.6 63.4 high 151%
Yarram Airport 21.4   30.7 22nd 10.3   4.1 11th 100.2
East Central (district 86)
Bundoora 22.7 −2.0 33.2 22nd 12.0 −0.3 5.7 20th 89.4 64.7 high 138%
Cerberus 20.9 −1.3 33.1 22nd 11.0 −0.8 3.3 4th 97.6 52.3 high 187%
Coldstream 23.1 −1.9 33.0 22nd 9.3 0.0 2.3 11th 60.0 47.5 average 126%
Cranbourne Botanic Gardens 21.8 −1.5 32.8 22nd 10.9 −0.8 6.4 21st 115.9 63.0 very high 184%
Essendon Airport 23.1 −1.2 34.9 22nd 11.7 +0.1 7.6 20th 75.4 51.6 high 146%
Ferny Creek 17.9 −2.1 27.7 22nd 9.3 −0.9 5.7 19th 122.0 84.8 high 144%
Frankston AWS 20.2 −2.1 29.1 22nd 13.1 −0.6 9.3 20th
Melbourne Airport 23.0 −1.4 34.5 22nd 11.1 −0.8 6.8 8th 90.0 48.6 very high 185%
Melbourne Regional Office 23.3 −0.9 35.2 22nd 13.4 +0.5 9.9 20th 76.6 59.2 high 129%
Moorabbin Airport 22.2 −1.6 33.2 22nd 12.4 −0.2 7.2 20th 69.2 59.2 average 117%
Rhyll 20.3 −1.3 29.9 22nd 13.0 −0.5 9.9 4th 79.2 42.0 very high 189%
Scoresby Research Institute 22.5 −1.3 32.8 22nd 11.2 −0.6 4.8 20th 84.2 73.8 average 114%
Viewbank 23.3   33.8 22nd 11.8   6.4 20th 89.4 67.5 high 132%
Wallan 20.3 −1.3 29.9 22nd 9.2 −0.7 5.5 20th 85.2 44.1 high 193%
Wonthaggi 20.6 −1.3 31.3 22nd 11.0 −0.6 5.0 4th 96.5 60.5 high 160%
West Central (district 87)
Avalon Airport 23.0 −0.9 35.7 22nd 11.4 −0.1 6.6 4th 61.8 31.6 very high 196%
Grovedale 22.2 −0.4 35.0 22nd 10.9 0.0 3.3 4th 75.2 40.9 high 184%
Laverton RAAF 22.8 −1.0 34.6 22nd 11.6 −0.3 5.6 8th 93.4 45.9 very high 203%
Sheoaks 22.3 −0.8 33.8 22nd 9.7 −0.5 3.6 4th 88.6 33.1 very high 268%
North Central (district 88)
Castlemaine Prison 23.3 −2.0 33.7 22nd 10.1 −0.6 3.1 8th 53.4 41.3 high 129%
Eildon Fire Tower 21.5 −2.2 28.8 26th 10.1 −1.0 5.5 8th 65.8 38.1 high 173%
Lake Eildon 24.5 −1.7 32.1 22nd 10.7 −0.2 4.3 20th 75.2 55.9 high 135%
Mangalore Airport 25.6 −1.3 34.5 22nd 11.8 0.0 4.6 2nd 39.6 40.8 average 97%
Maryborough 24.6 −2.0 33.9 22nd 10.7 −0.6 5.1 8th 69.1 37.6 high 184%
Redesdale 24.5 −1.7 34.7 22nd 9.7 −0.2 3.5 4th 55.6 37.9 high 147%
Western Plains (district 89)
Ararat Prison 22.8 −1.7 31.2 22nd 9.2 0.0 3.2 4th 67.4 36.6 high 184%
Ballarat Aerodrome 21.4 −1.2 32.2 22nd 8.8 −0.6 2.9 8th 83.4 51.5 high 162%
Westmere 22.3   32.3 22nd 8.8   1.2 8th 90.2
West Coast (district 90)
Aireys Inlet 20.0 −0.9 33.9 22nd 11.3 −0.8 6.4 4th 120.2 39.7 very high 303%
Cape Nelson Lighthouse 17.9 −1.7 24.5 21st 12.1 −0.8 8.3 9th 90.0 40.6 very high 222%
Cape Otway Lighthouse 17.4 −2.5 29.2 22nd 11.6 −0.4 6.4 4th 85.0 52.9 high 161%
Casterton 21.4   30.1 21st 9.9   3.6 8th 116.2
Casterton Showgrounds 22.2 −2.2 30.0 21st 10.4 0.0 5.2 10th 132.8 41.1 very high 323%
Colac 20.5   33.2 22nd 9.7   6.4 7th 88.4
Hamilton Airport 21.6 −2.3 29.6 21st 9.4 0.0 3.6 8th 109.0 44.3 very high 246%
Mortlake Racecourse 20.7 −2.4 29.9 21st 9.4 +0.3 2.7 11th 109.0 41.5 very high 263%
Port Fairy AWS 19.6 −1.5 26.0 22nd 12.0 −0.4 5.8 4th 125.4 42.0 very high 299%
Portland 18.0 −2.1 28.4 21st 10.4 −0.4 3.8 4th 114.6 49.8 highest 230%
Warrnambool Airport NDB 20.1 −2.6 29.8 21st 10.0 +0.1 3.7 4th 120.4 46.3 very high 260%
Weeaproinah 15.8 −2.1 25.0 22nd 8.4 −0.9 3.4 4th 213.4 113.2 very high 189%

Notes

This statement has been prepared based on information available at 2 pm on Monday 5 January 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

Dr Harvey Stern
Climate Meteorologist
Victoria Climate Services Centre
Bureau of Meteorology
Phone (03) 9669 4956
Email climate.vic@bom.gov.au