Thursday, 1 May 2008 - Monthly Climate Summary for Victoria - Product code IDCKGC16R0

Victoria in April 2008
Dry and Cool.

Summary

April 2008 was dry and relatively cool across Victoria, in spite of the current La Nia event. Less than half the usual rain fell at most places, except along the West Coast, and also along the exposed Central and South Gippsland coasts. Overnight temperatures were about a degree below normal in most Districts - a little more than a degree below in the north of the State. Daytime temperatures were about half a degree below normal in most Districts. An exceptional cold outbreak at the end of the month, resulted in significant snowfalls on the Alps, and led to several inland centres experiencing their coldest April night on record.

Rainfall

The wettest overall was 104.4 mm at Weeaproinah. The driest overall was 2.8 mm at Swan Hill Aerodrome. The wettest single day 38.4 mm at Falls Creek on the 3rd. Some sites had their lowest total April rainfall on record. Some sites had their lowest total April rainfall for at least 10 years.

Temperature

The hottest day was 30.0 C at Geelong Airport and Swan Hill Aerodrome on the 11th. The warmest days on average were 23.3 C at Mildura Airport. The coolest days on average were 8.6 C at Mount Buller. The coldest day was -3.2 C at Mt Hotham on the 28th. Some sites had their coldest April day (lowest maximum temperature) on record.

The coldest night was -5.4 C at Mt Hotham on the 28th. The coolest nights on average were 1.6 C at Dinner Plain (Mt Hotham Airport). The warmest nights on average were 13.1 C at Wilsons Promontory Lighthouse. The warmest night was 19.1 C at Essendon Airport on the 11th. Some sites had their lowest April temperature on record. Some sites had their lowest April mean daily minimum temperature on record.  Some sites had their lowest April mean daily minimum temperature for at least 10 years.

Wind

Early in the month, there was a sustained period of strong to gale force winds, which caused widespread damage and raised dust over many areas of the State. The strongest wind gust was 135 km/h at Wilsons Promontory Lighthouse on the 3rd.

Other phenomena

The weather late in the month was characterised by light winds, clear skies and overnight fogs, with hazy conditions persisting during the day.

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
30.0 C at Geelong Airport on the 11th
30.0 C at Swan Hill Aerodrome on the 11th
Warmest days on average
Highest mean daily maximum temperature
23.3 C at Mildura Airport
Coolest days on average
Lowest mean daily maximum temperature
8.6 C at Mount Buller
Coldest day
Lowest daily maximum temperature
-3.2 C at Mt Hotham on the 28th
Coldest night
Lowest temperature
-5.4 C at Mt Hotham on the 28th
Coolest nights on average
Lowest mean daily minimum temperature
1.6 C at Dinner Plain (Mt Hotham Airport)
Warmest nights on average
Highest mean daily minimum temperature
13.1 C at Wilsons Promontory Lighthouse
Warmest night
Highest daily minimum temperature
19.1 C at Essendon Airport on the 11th
Wettest overall
Highest total rainfall
104.4 mm at Weeaproinah
Driest overall
Lowest total rainfall
2.8 mm at Swan Hill Aerodrome
Wettest day
Highest daily rainfall
38.4 mm at Falls Creek on the 3rd
Highest wind gust
135 km/h at Wilsons Promontory Lighthouse on the 3rd

Records

Record lowest total April rainfall
Total rainfall
for April 2008 (mm)
Previous lowest
for April
Years of
record
Normal for
April
Combienbar AWS 14.6 20.2 in 1997 14 78.5
Wallan (Kilmore Gap) 9.4 15.8 in 1997 14 59.3
Eildon Fire Tower 8.2 12.0 in 1997 12 36.3

Lowest total April rainfall for at least 10 years
Total rainfall
for April 2008 (mm)
Most recent lower
for April
Years since
lower
Normal for
April
Ballarat Aerodrome 8.2 0.0 in 1923 85 51.9
Melbourne Airport 8.8 4.8 in 1981 27 44.7
Gabo Island Lighthouse 17.8 12.2 in 1981 26 83.7
Orbost (Comparison) 23.2 16.6 in 1993 15 72.9
Mallacoota 23.6 20.1 in 1993 14 92.6
Aireys Inlet 14.6 6.8 in 1997 11 51.9
Avalon Airport 5.8 2.0 in 1997 11 36.1
Bairnsdale Airport 19.6 10.6 in 1997 11 60.8
Bundoora (Latrobe University) 17.3 14.2 in 1997 11 54.3
East Sale Airport 15.6 8.6 in 1997 11 49.3
Edi Upper 25.2 8.8 in 1997 11 58.9
Essendon Airport 9.8 7.6 in 1981 11 55.8
Geelong Airport 10.2 4.0 in 1997 11 46.4
Maryborough 8.6 7.8 in 1997 11 37.1
Melbourne Regional Office 16.4 13.8 in 1997 11 55.9
Sheoaks 9.0 2.6 in 1998 10 38.6



Record lowest April daily maximum temperature
Lowest daily maximum
temperature
in April 2008 (C)
Previous lowest
for April
Years of
record
Normal for
April
Mildura Airport 12.1 on the 27th 13.9 on the 8th in 1964 62 23.5
Orbost (Comparison) 11.5 on the 27th 11.8 on the 26th in 1978 49 20.8
Tatura Inst Sustainable Ag 11.4 on the 27th 11.7 on the 27th in 1982 44 21.5
Scoresby Research Institute 10.3 on the 28th 12.0 on the 27th in 1976 42 19.9
Lake Eildon 10.0 on the 27th 10.2 on the 26th in 1978 39 20.8
Strathbogie 8.0 on the 27th 8.5 on the 7th in 1995 32 18.8
Bairnsdale Airport 10.6 on the 27th 11.8 on the 27th in 1999 28 20.6
Portland (Cashmore Airport) 12.2 on the 26th 12.4 on the 27th in 1998 26 18.4
Morwell (Latrobe Valley Airport) 11.2 on the 28th 11.3 on the 21st in 2006 25 20.5
Noojee (Slivar) 9.0 on the 28th 9.9 on the 7th in 1995 25 18.7
Mount Buller -2.1 on the 28th -1.7 on the 21st in 2006 24 10.0
Edi Upper 8.8 on the 27th 9.6 on the 30th in 2004 22 21.3
Wangaratta Aero 10.0 on the 27th 12.5 on the 7th in 1995 21 22.6
Willow Grove (Blue Rock Reservoir) 10.0 on the 28th 11.4 on the 24th in 2004 20 19.8
Cranbourne Botanic Gardens 11.5 on the 28th 11.9 on the 7th in 1995 19 19.7
Falls Creek -2.0 on the 28th -0.5 on the 11th in 1994 18 9.8
Beechworth Woolshed 9.4 on the 27th 10.4 on the 7th in 1995 17 21.7
Mt Hotham -3.2 on the 28th -2.6 on the 21st in 2006 17 8.5
Hunters Hill 3.9 on the 28th 5.2 on the 30th in 2004 16 16.3
Mt Moornapa 7.6 on the 27th 8.2 on the 27th in 1999 15 18.1
Yarrawonga 10.9 on the 27th 13.4 on the 7th in 1995 15 22.9
Coldstream 10.0 on the 28th 11.6 on the 7th in 1995 14 20.3
Mt Nowa Nowa 8.9 on the 27th 9.5 on the 27th in 1999 13 19.1
Stawell Aerodrome 12.4 on the 28th = 12.4 on the 27th in 1998 13 20.9
Cape Nelson Lighthouse 12.7 on the 28th 13.0 on the 27th in 1998 12 18.0
Eildon Fire Tower 6.5 on the 27th 8.5 on the 30th in 2004 12 18.5
Shepparton Airport 11.0 on the 27th 13.8 on the 27th in 1998 12 22.7
Swan Hill Aerodrome 13.7 on the 27th 14.0 on the 27th in 1998 12 23.8
Warrnambool Airport Ndb 13.0 on the 28th 13.4 on the 5th in 2006 10 20.2



Record lowest April temperature
Lowest temperature
in April 2008 (C)
Previous lowest
for April
Years of
record
Normal for
April
Longerenong -2.5 on the 29th -2.0 on the 26th in 1999 44 8.1
Cape Nelson Lighthouse 5.9 on the 27th 6.0 on the 25th in 1997 12 12.3
Swan Hill Aerodrome -0.3 on the 29th 0.6 on the 16th in 2006 12 8.6
Horsham Aerodrome -2.0 on the 29th -1.0 on the 28th in 2004 11 6.9



Record lowest April mean daily minimum temperature
Mean daily minimum
temperature
for April 2008 (C)
Previous lowest
for April
Years of
record
Normal for
April
Portland (Cashmore Airport) 8.5 8.6 in 1999 26 9.8
Port Fairy AWS 9.4 9.6 in 1999 17 10.7
Avalon Airport 8.4 = 8.4 in 1999 14 9.4

Lowest April mean daily minimum temperature for at least 10 years
Mean daily minimum
temperature
for April 2008 (C)
Most recent lower
for April
Years since
lower
Normal for
April
Geelong Airport 8.2 8.1 in 1995 13 9.5
Strathbogie 4.3 4.2 in 1997 11 5.6



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 April 2008
Maximum temperatures
for April
(C)
Minimum temperatures
for April
(C)
Rainfall
for April
(millimetres)
Mean for
April
2008
Diff
from
normal
Highest for
April
2008
Mean for
April
2008
Diff
from
normal
Lowest for
April
2008
Total for
April
2008
Normal
for
April
Rank of
April
2008
Fraction of
April
normal
North Mallee (district 76)
Mildura Airport 23.3 -0.2 29.7 10th 8.8 -1.3 2.2 29th 5.0 18.3 normal 27%
Ouyen 23.2 -0.2 29.6 10th 8.7 -0.8 2.5 29th 5.8 21.6 low 27%
Walpeup Research 23.0 +0.2 29.8 10th 9.6 -0.4 2.7 29th 7.2 22.8 low 32%
South Mallee (district 77)
Hopetoun Airport 23.2 29.7 10th 6.8 -1.7 29th 5.6
Swan Hill Aerodrome 23.2 -0.6 30.0 11th 7.6 -1.0 -0.3 29th 2.8 14.3 low 20%
North Wimmera (district 78)
Nhill 21.7 0 29.3 10th 5.7 -2.5 0.4 27th 5.2 27.2 low 19%
Nhill Aerodrome 21.8 29.9 10th 7.6 2.4 29th 7.2
Warracknabeal Museum 22.3 -0.1 28.2 11th 8.2 -0.7 0.6 29th 7.4 26.8 low 28%
South Wimmera (district 79)
Edenhope Airport 20.6 28.6 10th 7.7 1.0 27th 25.0
Grampians 11.8 18.1 10th 5.2 -1.2 28th 43.2
Horsham Aerodrome 21.9 -0.5 29.0 10th 5.3 -1.6 -2.0 29th 9.2 28.5 normal 32%
Horsham Polkemmet Rd 22.0 +0.5 28.9 10th 6.2 -2.2 0.0 29th 10.0 30.5 low 33%
Kanagulk 20.5 27.7 10th 7.1 1.4 27th 20.4
Longerenong 21.8 +0.3 28.3 11th 6.2 -1.8 -2.5 29th 8.2 28.0 low 29%
Pyrenees 15.0 22.2 11th 7.4 0.5 28th 19.2
Stawell Aerodrome 20.3 -0.6 26.9 10th 7.1 -1.0 0.6 29th 11.2 28.8 normal 39%
Lower North (district 80)
Charlton 22.0 28.2 11th 7.9 0.9 29th 9.2
Echuca Aerodrome 22.3 +0.1 28.5 11th 6.9 -2.5 0.7 29th 7.4 31.2 low 24%
Kerang 22.9 +0.2 28.5 10th 8.5 -0.9 2.5 29th 7.0 23.5 low 30%
Kyabram DPI 21.4 -0.2 27.3 11th 7.7 -0.9 1.9 29th 8.0 36.2 low 22%
Upper North (district 81)
Bendigo Airport 20.6 -0.6 25.5 10th 7.1 -0.4 -0.2 29th 8.8 26.0 normal 34%
Shepparton Airport 21.3 -1.4 26.9 11th 6.8 -1.4 0.7 30th 9.2 32.2 low 29%
Tatura Inst Sustainable Ag 21.0 -0.5 27.1 11th 6.3 -1.9 -0.6 29th 11.0 34.3 low 32%
Yarrawonga 22.1 -0.7 28.4 11th 7.5 -1.1 1.9 30th 8.2 26.6 low 31%
Lower Northeast (district 82)
Beechworth Woolshed 20.9 -0.9 27.0 11th 4.1 -2.1 -1.6 29th 17.2 45.6 low 38%
Benalla Airport 21.6 27.2 11th 6.4 0.1 29th 17.9
Corryong Airport 20.8 25.1 11th 3.5 -1.0 30th 23.8
Dartmouth Reservoir 19.7 -1.1 23.6 8th 5.3 -1.6 -0.2 30th 46.0 58.2 normal 79%
Hunters Hill 15.3 -1.0 19.9 11th 7.1 -1.2 0.1 28th 35.6 61.2 low 58%
Rutherglen Research 21.3 -0.6 27.0 11th 5.3 -1.8 -0.6 29th 12.8 40.4 low 32%
Strathbogie 18.2 -0.7 23.5 11th 4.3 -1.3 -0.7 30th 19.2 66.1 low 29%
Wangaratta Aero 21.5 -1.0 26.9 11th 4.5 -2.3 -1.0 29th 16.0 40.2 low 40%
Upper Northeast (district 83)
Dinner Plain 13.7 18.0 11th 1.6 -3.0 30th 41.0
Edi Upper 20.4 -0.9 24.8 20th 7.2 -1.1 1.3 29th 25.2 58.9 low 43%
Falls Creek 9.0 -0.8 14.5 17th 1.8 -1.2 -5.1 29th 69.0 68.4 normal 101%
Mount Buller 8.6 -1.4 12.7 11th 2.3 -1.4 -4.2 28th 76.4 105.4 normal 72%
Omeo 17.7 22.6 11th 3.8 -1.4 30th 23.0
Omeo Comparison 17.6 -0.9 22.4 11th 4.0 -0.8 -0.8 20th 24.0 45.0 low 53%
East Gippsland (district 84)
Combienbar AWS 17.4 -0.1 25.1 11th 8.6 -0.9 3.2 28th 14.6 78.5 lowest 19%
Gabo Island Lighthouse 18.8 -0.1 22.9 2nd 12.5 -1.0 9.2 28th 17.8 83.7 low 21%
Gelantipy 15.5 -0.9 21.9 11th 6.1 -0.7 0.4 30th 27.4 57.0 low 48%
Lakes Entrance 19.1 27.0 11th 9.6 4.5 30th 43.4
Mallacoota 19.2 -0.6 24.6 11th 10.3 -1.2 5.6 30th 23.6 92.6 low 25%
Mt Nowa Nowa 18.3 -0.9 26.7 11th 10.0 -0.5 3.8 30th 43.6 79.8 low 55%
Orbost 19.9 28.6 11th 9.1 3.4 30th 21.4
Orbost 20.6 -0.2 28.8 11th 8.0 -1.3 2.2 30th 23.2 72.9 low 32%
Point Hicks 18.9 -0.9 24.1 11th 12.1 -1.0 6.5 29th 50.6 84.8 low 60%
West Gippsland (district 85)
Bairnsdale Airport 20.4 -0.3 28.9 11th 7.5 -1.0 2.8 30th 19.6 60.8 very low 32%
East Sale Airport 20.2 -0.1 28.7 11th 7.5 -1.0 2.0 30th 15.6 49.3 very low 32%
Morwell 20.7 +0.2 26.6 10th 7.7 -0.9 1.2 30th 24.6 57.0 low 43%
Mount Baw Baw 9.0 -0.9 13.9 22nd 2.8 -1.0 -3.3 28th 74.0 137.9 low 54%
Mt Moornapa 17.5 -0.6 26.1 11th 9.4 -0.3 3.8 28th
Noojee 18.4 -0.3 25.0 10th 6.5 -0.8 1.8 30th 40.2 85.8 low 47%
Pound Creek 20.1 26.7 11th 7.5 1.9 20th 63.2
Wilsons Promontory Lighthouse 17.4 +0.4 22.7 25th 13.1 +0.4 7.7 28th 92.6 85.2 normal 109%
Yarram Airport 20.4 27.4 11th 7.2 1.3 20th 15.8
East Central (district 86)
Bundoora 20.2 -0.3 26.8 11th 9.2 -0.5 3.4 30th 17.3 54.3 low 32%
Cerberus 19.5 -0.1 27.4 11th 8.2 -1.6 2.7 20th 45.4 63.2 normal 72%
Coldstream 20.1 -0.1 26.6 10th 5.8 -0.6 0.5 16th 22.2 58.7 very low 38%
Cranbourne Botanic Gardens 19.7 0 27.2 11th 9.3 -0.9 4.5 30th 45.0 65.8 normal 68%
Essendon Airport 20.6 +0.7 27.5 11th 9.4 -0.4 4.6 24th 9.8 55.8 very low 18%
Ferny Creek 15.9 -0.1 23.4 10th 8.7 -0.7 2.6 28th 41.6 95.5 very low 44%
Frankston AWS 19.2 +0.1 25.2 11th 11.4 -0.7 7.1 29th
Melbourne Airport 20.5 +0.3 27.3 11th 9.2 -0.9 4.6 30th 8.8 44.7 very low 20%
Melbourne Regional Office 21.0 +0.8 26.8 11th 11.2 +0.3 6.1 30th 16.4 55.9 low 29%
Moorabbin Airport 20.3 +0.2 27.7 11th 9.6 -0.8 4.7 16th 25.2 62.4 low 40%
Rhyll 19.5 +0.3 24.7 11th 11.8 -0.5 6.9 28th 55.2 62.8 normal 88%
Scoresby Research Institute 20.0 +0.1 26.8 10th 8.5 -1.6 3.3 28th 36.2 66.5 low 54%
Viewbank 20.7 27.7 10th 8.9 2.8 30th 21.2
Wallan 16.8 0 22.7 10th 8.2 -0.3 2.2 28th 9.4 59.3 lowest 16%
Wonthaggi 20.3 +0.8 27.0 11th 9.3 -1.0 4.7 22nd 72.6 78.5 normal 92%
West Central (district 87)
Avalon Airport 20.7 +0.7 29.6 11th 8.4 -1.1 4.0 30th 5.8 36.1 very low 16%
Geelong Airport 20.5 +0.4 30.0 11th 8.2 -1.3 3.2 30th 10.2 46.4 very low 22%
Laverton RAAF 20.5 +0.3 27.9 11th 8.9 -1.0 3.8 28th 12.4 46.3 low 27%
Point Wilson 18.6 0 25.7 11th 11.5 -1.0 7.3 28th
Sheoaks 19.3 +0.2 27.4 11th 7.5 -1.0 2.1 29th 9.0 38.6 very low 23%
North Central (district 88)
Castlemaine Prison 19.6 -0.5 24.8 11th 6.9 -0.5 -1.2 29th 17.9 41.7 low 43%
Eildon Fire Tower 17.2 -1.3 22.5 10th 8.2 -0.9 2.3 28th 8.2 36.3 lowest 23%
Lake Eildon 20.3 -0.5 25.5 11th 6.4 -1.4 3.5 22nd 22.6 60.3 low 37%
Mangalore Airport 21.0 -0.4 27.0 11th 7.4 -1.2 0.5 30th 13.6 38.8 low 35%
Maryborough 20.8 +0.2 26.5 11th 6.9 -1.4 0.2 29th 8.6 37.1 low 23%
Redesdale 20.1 -0.3 25.0 10th 6.3 -0.8 -0.2 30th 9.2 40.5 low 23%
Western Plains (district 89)
Ararat Prison 19.6 +0.2 26.6 11th 6.0 -1.1 -0.4 21st 19.0 43.3 low 44%
Ballarat Aerodrome 18.4 +0.7 25.0 11th 6.0 -1.4 -0.8 29th 8.2 51.9 very low 16%
Westmere 20.2 28.0 11th 5.7 -0.1 16th 11.6
West Coast (district 90)
Aireys Inlet 18.8 -0.1 28.2 11th 10.6 -0.8 5.1 28th 14.6 51.9 very low 28%
Cape Nelson Lighthouse 18.2 +0.2 25.1 24th 11.6 -0.7 5.9 27th 50.8 42.4 normal 120%
Cape Otway Lighthouse 17.5 0 26.3 11th 11.3 -0.4 5.6 27th 75.0 72.6 normal 103%
Casterton 20.1 28.7 10th 7.2 0.5 27th 32.6
Casterton Showgrounds 20.5 0 28.6 10th 6.7 -2.1 2.0 16th 34.4 43.2 normal 80%
Colac 19.3 28.2 11th 8.8 3.1 28th 14.4
Hamilton Airport 20.1 +0.2 26.7 10th 6.9 -1.3 1.3 27th 23.8 37.4 low 64%
Mortlake Racecourse 19.9 +0.1 27.1 10th 6.3 -1.4 -0.3 27th 32.4 43.0 normal 75%
Port Fairy AWS 19.5 +0.2 27.9 8th 9.4 -1.3 2.4 27th 39.8 44.9 normal 89%
Portland 18.3 -0.1 26.9 10th 8.5 -1.3 3.6 27th 61.2 56.9 normal 108%
Warrnambool Airport Ndb 19.7 -0.5 27.3 10th 7.2 -1.5 0.6 21st 45.8
Weeaproinah 15.2 +0.2 22.3 11th 8.2 -0.6 2.1 28th 104.4 154.0 low 68%

Notes

This statement has been prepared based on information available at 2 pm on Thursday 1 May 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 the years 1895 to date. They are not shown for sites with less than 10 years of record in that time, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of "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