Monday, 1 September 2008 - Seasonal Climate Summary for Victoria - Product code IDCKGC26R0

Victoria in winter 2008
An end to the series of warm winters

After a series of relatively warm winters, winter 2008 saw temperatures close to the long-term (all years of record) normal. Overnight temperatures were mostly slightly above normal (within half a degree of the long-term averages) whilst daytime temperatures were mostly slightly below the long-term normal (within half a degree of the long-term averages). Rainfall was slightly below the long-term normal in most Districts. The close to normal temperatures that have occurred in winter 2008 are not inconsistent with the long-term warming trend which has been observed in recent decades. Even with this warming trend, relatively cool periods are still occurring, but less frequently than hitherto.

In the Melbourne CBD, the average minimum temperature was 8.0 deg C (1.5 deg C above the long-term average over all years of record), whilst the average maximum temperature was 14.9 deg C (0.7 deg C above the long-term average). Total winter rainfall was 102.6 mm (70% of the long-term average total).

The reason for the relatively mild conditions in the CBD is on account of what is known as the "heat island effect", a feature of the inner areas of most major cities.  This effect occurs on account of the ability of the buildings and roads to absorb heat (and then to re-radiate it back into the atmosphere) more effectively than grassland and forest. This point is effectively illustrated by the fact that away from the city centre at Melbourne Airport, average temperatures were much closer to the long-term normals, the average winter 2008  minimum temperature being 6.1 deg C (0.3 deg C above the long-term average), whilst the average winter 2008 maximum temperature was 13.7 deg C (0.1 deg C above the long-term average).

Further information

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

Summaries

This table is very wide and may not fit if printed.

Summary statistics for winter 2008
Maximum temperatures
for winter
(°C)
Minimum temperatures
for winter
(°C)
Rainfall
for winter
(millimetres)
Mean for
winter
2008
Diff
from
normal
Highest for
winter
2008
Mean for
winter
2008
Diff
from
normal
Lowest for
winter
2008
Total for
winter
2008
Normal
for
winter
Rank of
winter
2008
Fraction of
winter
normal
North Mallee (district 76)
Mildura Airport 16.0 −0.2 20.9 29 Aug 4.9 0.0 −1.0 29 Jul 67.2 75.8 average 89%
Ouyen 15.6 −0.4 20.3 29 Aug 4.8 0.0 −0.5 29 Jul 86.3 93.6 average 92%
Walpeup Research 15.3 −0.1 20.7 29 Aug 5.0 −0.2 −0.6 23 Aug 76.4 97.6 average 78%
South Mallee (district 77)
Hopetoun Airport 15.1   20.1 29 Aug 3.8   −3.9 23 Aug 74.8
Swan Hill Aerodrome 15.5 −0.1 21.1 5 Jun 4.5 +0.7 −1.5 24 Jul 71.6 83.4 average 86%
North Wimmera (district 78)
Nhill 14.0 −0.4 20.0 3 Jun 3.8 0.0 −3.2 27 Aug 117.8 138.3 average 85%
Nhill Aerodrome 14.3   20.1 3 Jun 4.7   −0.9 27 Aug 108.6
Warracknabeal Museum 14.2 −0.5 18.6 29 Aug 4.6 +0.4 −1.8 29 Jul 99.3 121.1 average 82%
South Wimmera (district 79)
Edenhope Airport 13.4   18.4 2 Jun 5.2   −2.2 23 Jul 150.0
Grampians 4.8   12.7 16 Jun 1.2   −2.6 29 Jul 416.6
Horsham Aerodrome 13.7 −0.8 18.3 29 Aug 3.4 +0.3 −3.0 29 Jul 121.0 111.3 average 109%
Horsham Polkemmet Rd 13.9 −0.2 19.5 3 Jun 3.8 −0.4 −2.5 29 Jul 119.8 144.9 average 83%
Kanagulk 13.0   17.5 5 Jun 4.4   −2.2 29 Jul 145.2
Longerenong 13.8 −0.2 18.4 2 Jun 4.0 +0.2 −1.9 29 Jul 109.4 131.1 average 83%
Pyrenees 7.2   12.5 29 Aug 3.0   −1.1 10 Aug 242.8
Stawell Aerodrome 12.7 −0.7 17.1 2 Jun 4.8 +0.5 −1.7 29 Jul 170.0 160.5 average 106%
Lower North (district 80)
Charlton 14.0   18.4 29 Aug 4.3   −1.6 24 Jul 111.2
Echuca Aerodrome 14.8 +0.5 19.6 3 Jun 4.1 −0.4 −1.6 23 Jul 79.8 125.7 low 63%
Kerang 15.3 +0.4 19.9 29 Aug 4.8 +0.3 −1.0 24 Jul 80.8 108.2 low 75%
Kyabram DPI 14.2 +0.3 18.8 2 Jun 4.3 +0.8 −2.0 24 Jul 107.2 127.2 average 84%
Upper North (district 81)
Bendigo Airport 13.0 −0.3 18.3 2 Jun 3.5 +0.8 −3.0 23 Aug 152.4 146.7 average 104%
Shepparton Airport 14.1 −0.2 19.1 5 Jun 4.0 +0.6 −2.6 24 Jul 106.4 124.0 average 86%
Tatura Inst Sustainable Ag 14.0 +0.1 19.0 2 Jun 4.2 +0.7 −2.6 24 Jul 108.5 138.8 low 78%
Yarrawonga 14.7 +0.2 19.6 2 Jun 4.1 +0.4 −1.8 19 Aug 83.0 128.0 low 65%
Lower Northeast (district 82)
Benalla Airport 14.2   19.6 5 Jun 4.1   −1.9 24 Jul 151.0
Corryong Airport 12.8   20.2 4 Jun 1.5   −4.1 24 Jul 213.5
Dartmouth Reservoir 12.6 0.0 18.1 4 Jun 2.5 −0.1 −2.5 24 Aug 267.2 343.5 low 78%
Hunters Hill 8.0 −0.1 15.5 4 Jun 2.6 +0.1 −1.7 17 Aug 357.6 425.7 low 84%
Rutherglen Research 14.1 +0.9 19.9 2 Jun 2.8 +0.4 −3.5 24 Aug 120.2 181.0 low 66%
Strathbogie 11.0 −0.1 17.5 2 Jun 2.7 +0.7 −4.1 24 Jul 274.0 355.3 low 77%
Wangaratta Aero 14.2 +0.4 19.6 2 Jun 2.9 +0.2 −3.1 23 Jul 156.0 197.5 low 79%
Upper Northeast (district 83)
Dinner Plain 6.8   14.0 16 Jun −1.2   −7.7 24 Jul 128.2
Falls Creek 1.3 −0.9 11.3 3 Jun −2.7 −0.3 −9.0 17 Aug 241.2 305.0 average 79%
Mount Buller 1.6 −0.7 12.2 16 Jun −2.2 −0.1 −8.7 23 Aug 463.8 506.5 average 92%
Mount Hotham −0.3 −1.1 9.6 16 Jun −3.7 −0.6 −8.8 24 Aug 326.4 380.1 average 86%
Omeo 11.0   16.5 2 Jun 1.2   −5.4 26 Jul 111.8
East Gippsland (district 84)
Combienbar AWS 11.7 −0.2 19.2 18 Jun 5.1 −0.2 0.2 28 Jul 208.8 236.0 average 88%
Gabo Island Lighthouse 15.0 +0.6 20.1 12 Jun 8.7 +0.1 5.8 10 Aug 315.0 261.7 high 120%
Gelantipy 10.1 −0.1 15.8 10 Jun 2.9 +0.2 −1.4 9 Jul 139.6 163.9 average 85%
Lakes Entrance 15.2   21.2 12 Jun 6.3   −0.1 25 Jul 150.0
Mallacoota 15.0 −0.3 21.1 31 Aug 6.7 0.0 1.5 12 Aug 331.0 241.6 high 137%
Mount Nowa Nowa 13.3 −0.3 19.3 30 Aug 6.5 +0.2 1.8 23 Aug 145.0 194.0 average 75%
Orbost 15.4   22.1 30 Jun 5.9   0.2 13 Jul 136.2
Orbost 15.9 +0.6 21.8 12 Jun 5.0 +0.3 −1.2 13 Jul 133.6 211.6 low 63%
Point Hicks 14.7 +0.1 21.4 11 Jun     5.0 3 Aug 323.2 282.8 average 114%
West Gippsland (district 85)
Bairnsdale Airport 15.4 +0.4 21.5 11 Jun 4.5 +0.2 −2.2 25 Jul 74.2 151.2 very low 49%
East Sale Airport 14.5 +0.2 20.0 11 Jun 4.2 +0.4 −3.2 13 Jul 87.6 134.7 low 65%
Morwell 14.1 0.0 20.2 12 Jun 4.8 +0.7 −2.2 13 Jul 165.0 188.3 average 88%
Mount Baw Baw 2.4 −0.8 11.1 16 Jun −1.2 −0.2 −6.6 23 Aug 597.0
Mount Moornapa 12.3 −0.3 18.5 30 Aug 5.8 +0.2 1.4 23 Aug 122.6 183.4 low 67%
Noojee 12.6 −0.1 17.3 14 Jul 4.4 +0.9 −1.8 25 Jul 305.8 316.0 average 97%
Pound Creek 14.0   18.7 30 Aug 5.8   −1.0 24 Jul 263.2
Wilsons Promontory Lighthouse 12.8 +0.2 17.9 10 Jun 9.5 +0.8 4.7 22 Aug 319.6 359.7 average 89%
Yarram Airport 14.6   19.5 18 Jun 5.0   −1.8 25 Jul 133.2
East Central (district 86)
Bundoora 13.9 −0.1 18.5 29 Aug 6.3 +0.5 0.1 25 Jul 125.2 162.5 low 77%
Cerberus 13.9 −0.2 17.9 11 Jun 6.3 −0.3 −1.3 29 Jul 239.2 229.7 average 104%
Coldstream 13.5 −0.5 17.8 8 Jun 4.3 +0.3 −2.9 25 Jul 163.6 190.5 low 86%
Cranbourne Botanic Gardens 13.7 −0.2 18.9 30 Aug 6.4 +0.1 0.0 24 Jul 232.8 215.1 average 108%
Essendon Airport 14.1 +0.6 18.6 11 Jun 6.3 +0.8 −0.3 25 Jul 104.6 133.3 low 78%
Ferny Creek 9.5 −0.2 14.6 29 Aug 5.2 −0.1 −0.6 11 Aug 264.8 273.2 average 97%
Frankston AWS 13.4 +0.2 18.6 30 Aug 8.4 +0.2 1.8 24 Jul
Melbourne Airport 13.7 0.0 18.2 11 Jun 6.1 +0.4 0.1 29 Jul 96.4 120.5 low 80%
Melbourne Regional Office 14.9 +0.8 19.3 29 Aug 8.0 +1.5 3.2 25 Aug 102.6 147.1 low 70%
Moorabbin Airport 14.2 0.0 19.0 30 Aug 6.9 +0.4 0.1 25 Jul 165.2 188.0 average 88%
Rhyll 13.7 0.0 17.8 11 Jun 8.4 +0.1 4.8 25 Jul 245.2 201.9 average 121%
Scoresby Research Institute 13.8 +0.3 18.1 30 Aug 6.0 −0.1 −0.1 29 Jul 182.4 225.0 low 81%
Viewbank 14.0   18.8 11 Jun 6.3   −0.3 25 Aug 160.2
Wallan 9.6 −0.2 15.5 2 Jun 4.5 +0.2 0.3 11 Aug 172.6 193.1 average 89%
Wonthaggi 14.2 +0.2 19.3 30 Aug 6.5 0.0 2.0 23 Aug 327.1 297.0 average 110%
West Central (district 87)
Avalon Airport 14.4 −0.3 18.7 11 Jun 5.5 +0.1 −1.1 25 Jul 109.6 117.8 average 93%
Grovedale 14.3 −0.2 18.4 17 Jun 5.7 −0.1 −0.2 2 Jun 117.4 146.1 low 80%
Laverton RAAF 14.4 +0.2 19.3 11 Jun 6.0 +0.6 −1.1 29 Jul 102.2 123.4 low 83%
Point Wilson 12.9 −0.8 16.8 11 Jun 7.6 −0.6 3.3 29 Jul
Sheoaks 12.5 −0.2 17.3 29 Aug 5.2 −0.1 −1.6 29 Jul 132.6 124.2 average 107%
North Central (district 88)
Castlemaine Prison 12.2 −0.4 17.9 3 Jun 3.9 +0.7 −3.4 23 Aug 163.6 184.8 average 89%
Eildon Fire Tower 9.8 −0.2 16.3 4 Jun 4.4 +0.1 0.1 10 Aug 186.0 200.4 average 93%
Lake Eildon 13.0 +0.3 18.0 2 Jun 4.0 +0.1 −1.9 23 Aug 242.9 286.5 low 85%
Mangalore Airport 13.6 +0.3 18.7 2 Jun 4.2 +0.6 −1.6 23 Aug 135.4 176.6 low 77%
Maryborough 13.1 +0.1 17.9 6 Jun 4.4 +0.6 −1.8 8 Aug 138.2 165.9 average 83%
Redesdale 12.3 −0.4 17.9 2 Jun 3.9 +0.6 −1.5 8 Aug 187.4 187.9 average 100%
Western Plains (district 89)
Ararat Prison 12.0 −0.3 17.1 2 Jun 4.1 +0.5 −4.2 29 Jul 153.8 184.8 low 83%
Ballarat Aerodrome 10.9 +0.2 15.2 2 Jun 3.6 −0.1 −2.6 8 Aug 188.6 204.3 average 92%
Westmere 12.5   17.7 2 Jun 4.4   −3.2 29 Jul 141.2
West Coast (district 90)
Aireys Inlet 13.8 −0.1 18.0 29 Aug 7.3 −0.3 3.4 8 Aug 175.8 191.0 low 92%
Cape Nelson Lighthouse 13.9 −0.2 18.3 2 Jun 8.7 +0.1 3.9 24 Jul 288.4 275.0 average 105%
Cape Otway Lighthouse 13.1 −0.4 16.6 10 Jun 8.4 +0.5 4.4 8 Aug 284.4 305.0 average 93%
Casterton 13.3   18.5 2 Jun 4.8   −3.4 29 Jul 177.2
Casterton Showgrounds 13.9 −0.2 18.7 2 Jun 5.2 −0.2 −1.7 24 Jul 195.7 237.8 low 82%
Colac 12.0   16.2 5 Jun 5.5   0.9 23 Jul 155.4
Hamilton Airport 12.2 −0.6 16.9 2 Jun 4.6 −0.1 −0.4 16 Jun 200.8 212.2 average 95%
Mortlake Racecourse 13.2 −0.2 17.3 5 Jun 4.7 −0.1 −2.3 29 Jul 238.6 175.3 high 136%
Port Fairy AWS 14.3 −0.3 19.5 29 Aug 7.2 −0.1 0.9 29 Jul 295.0 244.7 high 121%
Portland 13.1 −0.5 17.6 2 Jun 6.5 0.0 −0.1 16 Jun 306.0 318.0 average 96%
Warrnambool Airport NDB 13.5 −0.6 17.4 29 Aug 5.4 −0.3 −1.7 29 Jul 300.0
Weeaproinah 9.4 0.0 13.5 15 Jul 5.1 +0.2 0.6 10 Aug 651.8 669.2 average 97%

Notes

This statement has been prepared based on information available at 1 pm on Monday 1 September 2008. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Normals 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 ("normal") 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, normal in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of normal 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