Victoria in May 2010: Temperatures and rainfall generally close to average across the state

Maximum temperatures were close to, or slightly above average across the state, whilst minimum temperatures were close to normal. Most districts received close to average rainfall, with only some parts of western and northeastern Victoria receiving below average totals.

Rainfall

Most areas received close to average rainfall this month, with rainfall slightly above average in far northern parts of the Mallee and Northern Country, and in east Gippsland. Parts of the Western and Wimmera districts, as well as areas to the northeast of Melbourne, received totals that were below average.

The wettest overall was 195.6 mm at Genoa (Fools Haven) and the wettest single day recorded 87.4 mm at Mount Wellington on the 31st.

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

There is a map of rainfall deciles below.

Maximum temperature

Maximum temperatures were generally close to, or up to 1C above average across the state.

The hottest day was 27.1 C at East Sale Airport on the 4th, whilst the warmest days on average were 19.5 C at Mildura Airport.

The coolest days on average were 4.4 C at Mount Hotham and the coldest day was -1.5 C at Mount Baw Baw on the 11th.

There is a map of maximum temperature anomalies below.

Minimum temperature

Minimum temperatures were generally within 1C  of the average across the state.

The coldest night was -4.8 C at Mount Hotham on the 12th, whilst the coolest nights on average were -0.1 C at Mount Hotham.

The warmest nights on average were 12.1 C at Wilsons Promontory Lighthouse, whilst the warmest night was 15.5 C at Gabo Island Lighthouse on the 4th.

Some sites had their lowest May temperature on record. There is a map of minimum temperature anomalies below.

Wind

The strongest wind gust was 120 km/h at Mount Hotham on the 30th.

 

Further information

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Extremes in May 2010
Hottest day 27.1 C at East Sale Airport on the 4th
Warmest days on average 19.5 C at Mildura Airport
Coolest days on average 4.4 C at Mount Hotham
Coldest day -1.5 C at Mount Baw Baw on the 11th
Coldest night -4.8 C at Mount Hotham on the 12th
Coolest nights on average -0.1 C at Mount Hotham
Warmest nights on average 12.1 C at Wilsons Promontory Lighthouse
Warmest night

15.5 C at Gabo Island Lighthouse on the 4th

Wettest overall 195.6 mm at Genoa (Fools Haven)
Wettest day 87.4 mm at Mount Wellington on the 31st
Highest wind gust 120 km/h at Mount Hotham on the 30th

Maps

Anomaly in mean maximum temperature

Map of Anomaly in mean maximum temperature

Anomaly in mean minimum temperature

Map of Anomaly in mean minimum temperature

Rainfall deciles

Map of Rainfall deciles


Highest total May rainfall for at least 20 years
Total rainfall
for May 2010 (mm)
Most recent May
this high or higher
Years since
higher
Average for
May
Werrimull 58.0 65.0 in 1979 25 23.8
Mildura Airport 54.2 63.6 in 1990 20 25.6



Lowest total May rainfall for at least 20 years
Total rainfall
for May 2010 (mm)
Most recent May
this low or lower
Years since
lower
Average for
May
Winchelsea (Post Office) 7.0 2.3 in 1947 60 48.7
Dargo 13.0 9.9 in 1973 32 50.8



Record lowest May temperature
Lowest temperature
in May 2010 (C)
Previous lowest
for May
Years of
record
Average for
May
Phillip Island Penguin Reserve -0.2 on the 23rd 0.7 on the 11th in 1998 24 8.9



Summary statistics for May 2010
Maximum temperatures
for May
(C)
Minimum temperatures
for May
(C)
Rainfall
for May
(millimetres)
Mean for
May
2010
Diff
from
average
Highest for
May
2010
Mean for
May
2010
Diff
from
average
Lowest for
May
2010
Total for
May
2010
Average
for
May
Rank of
May
2010
Fraction of
May
average
Southwest Slopes (South) (district 72)
Albury Airport AWS 18.1 +0.4 25.3 4th 5.1 -0.4 0.9 23rd 61.4 49.3 average 125%
North Mallee (district 76)
Mildura Airport 19.5 +0.5 26.3 3rd 7.5 +0.1 1.4 13th 54.2 25.6 high 212%
Ouyen (Post Office) 19.2 +0.4 25.7 3rd 7.9 +0.7 1.5 23rd 44.2 32.0 high 138%
Walpeup Research 19.3 +1.0 26.1 3rd 8.4 +0.7 1.1 12th 32.0 31.2 average 103%
South Mallee (district 77)
Hopetoun Airport 19.2   26.1 3rd 5.3   -2.6 12th 27.8
Swan Hill Aerodrome 19.1 +0.3 26.6 4th 6.8 +0.7 -0.9 23rd 61.0 26.1 v high 234%
North Wimmera (district 78)
Nhill Aerodrome 18.2   24.7 3rd 6.3   0.3 19th 16.2
Warracknabeal Museum 18.5 +0.6 25.0 3rd 6.1 -0.4 -0.8 23rd 55.6 40.4 high 138%
South Wimmera (district 79)
Edenhope Airport 16.6   22.7 3rd 6.4   1.0 13th 33.0
Grampians (Mount William) 8.6   12.8 1st 3.9   -0.2 11th 90.4
Horsham Aerodrome 17.9 +0.2 24.2 3rd 4.7 -0.3 -2.2 22nd 25.6 31.9 average 80%
Horsham Polkemmet Rd 18.3 +1.1 24.8 3rd 4.9 -1.3 -2.5 22nd 27.2 46.5 average 58%
Kanagulk 17.0   23.0 1st 5.5   -2.3 23rd 30.0
Longerenong 17.7 +0.6 24.3 3rd 5.1 -0.8 -2.2 12th 31.0 42.9 average 72%
Pyrenees (Ben Nevis) 10.4   15.6 3rd 5.1   0.9 11th 57.6
Stawell Aerodrome 16.6 +0.1 22.1 3rd 5.9 -0.1 -1.2 22nd 25.6 36.9 average 69%
Lower North (district 80)
Charlton 18.6   24.4 3rd 5.9   -0.8 23rd 24.0
Echuca Aerodrome 18.6 +1.0 26.5 4th 6.3 -0.3 0.2 22nd 43.8 40.9 average 107%
Kerang 18.7 +0.7 26.1 4th 7.0 +0.3 1.0 23rd 68.6 36.4 high 188%
Kyabram DPI 18.4 +1.2 25.6 4th 6.0 -0.1 0.4 22nd 68.2 43.1 high 158%
Upper North (district 81)
Bendigo Airport 17.0 +0.4 23.6 4th 5.2 0.0 0.5 19th 71.6 48.3 average 148%
Shepparton Airport 18.0 +0.2 24.5 4th 5.6 +0.2 0.2 22nd 36.8 32.7 average 113%
Tatura Inst Sustainable Ag 17.8 +0.5 24.6 4th 5.0 -0.8 -1.3 23rd 44.4 45.5 average 98%
Yarrawonga 18.7 +0.5 25.9 4th 6.1 0.0 -1.0 22nd 49.8 32.7 average 152%
Lower Northeast (district 82)
Benalla Airport 18.2   24.8 4th 4.7   -0.4 19th 54.6
Corryong Airport 16.3   22.5 4th 2.4   -3.6 23rd 48.8
Dartmouth Reservoir 16.2 +0.1 20.8 3rd 4.9 +0.2 -0.5 12th 51.0 86.4 low 59%
Hunters Hill 11.7 -0.2 14.2 18th 5.7 +0.1 -0.1 12th 71.0 85.6 average 83%
Rutherglen Research 18.3 +1.3 25.9 4th 3.3 -1.1 -2.9 12th 51.4 51.5 average 100%
Strathbogie 14.5 0.0 19.9 4th 3.8 +0.2 -3.2 23rd 47.2 96.7 low 49%
Wangaratta Aero 18.1 +0.5 25.0 4th 3.6 -0.7 -2.8 22nd 53.6 59.9 average 89%
Upper Northeast (district 83)
Dinner Plain (Mount Hotham Airport) 10.5   16.0 9th 0.8   -4.4 23rd 51.2 33.9 high 151%
Edi Upper     22.5 4th 5.8 -0.3 1.8 12th 73.0 94.5 average 77%
Falls Creek 6.0 -0.2 10.1 16th 0.9 +0.2 -4.3 12th 47.8 91.6 average 52%
Mount Buller 6.1 -0.3 9.8 20th 1.0 -0.2 -3.4 12th 97.0 129.6 average 75%
Mount Hotham 4.4 -0.3 8.4 16th -0.1 -0.1 -4.8 12th 76.2 123.2 average 62%
Omeo 14.4   19.3 2nd 2.1   -4.3 22nd 48.8
East Gippsland (district 84)
Combienbar AWS 14.2 -0.1 22.8 4th 7.5 -0.2 3.8 12th 139.6 68.9 high 203%
Gabo Island Lighthouse 17.6 +0.7 22.7 2nd 11.3 +0.1 8.0 12th 152.6 100.0 high 153%
Gelantipy 12.8 -0.2 19.7 2nd 5.1 +0.2 0.3 23rd 78.4 49.8 high 157%
Lakes Entrance (Eastern Beach Road) 17.4   25.6 4th 8.5   4.0 24th 73.0
Mallacoota 17.8 +0.4 25.7 4th 8.9 -0.5 4.2 23rd 150.0 85.1 high 176%
Mount Nowa Nowa 15.5 -0.4 23.3 4th 8.7 0.0 5.0 23rd 84.8 60.4 high 140%
Orbost 17.7   25.2 4th 8.0   2.8 22nd 74.8 51.8 high 144%
Orbost (Comparison) 18.1 +0.4 25.6 4th 6.5 -0.6 0.3 23rd 73.9 69.9 average 106%
Point Hicks (Lighthouse) 17.3 +0.3 26.3 4th 11.0 -0.1 7.4 12th 89.3 95.6 average 93%
West Gippsland (district 85)
Bairnsdale Airport 17.8 +0.3 26.6 4th 6.4 -0.3 -0.5 23rd 68.0 46.8 high 145%
East Sale Airport 17.5 +0.7 27.1 4th 5.7 -0.6 -1.6 23rd 45.0 52.0 average 87%
Morwell (Latrobe Valley Airport) 16.8 -0.1 23.5 4th 6.0 -0.6 -1.4 23rd 60.4 51.9 average 116%
Mount Baw Baw 6.0 -0.9 10.7 3rd 1.1 -0.7 -3.0 12th 152.0 103.1 high 147%
Mount Moornapa 15.0 +0.3 23.0 4th 7.9 0.0 3.9 23rd 3.4 43.9 v low 8%
Noojee (Slivar) 15.8 +0.5 23.0 4th 6.0 +0.3 -0.2 23rd 78.0 78.9 average 99%
Pound Creek 17.1   24.7 4th 7.1   -0.8 23rd 78.6
Wilsons Promontory Lighthouse 15.7 +0.8 23.0 4th 12.1 +1.0 8.0 12th 157.0 112.9 high 139%
Yarram Airport 17.5   25.6 4th 6.0   -1.2 22nd 51.2
East Central (district 86)
Bundoora (Latrobe University) 17.1 +0.4 23.2 4th 8.1 +0.2 0.5 23rd 35.2 50.3 average 70%
Cerberus 16.9 +0.3 23.6 4th 8.2 -0.1 0.4 22nd 57.2 62.4 average 92%
Coldstream 17.1 +0.6 23.3 4th 5.5 +0.1 -2.4 23rd 52.6 60.5 average 87%
Coldstream Comparison 16.9   23.3 4th 5.3   -2.5 23rd 52.6
Cranbourne Botanic Gardens 16.7 +0.4 24.0 4th 8.4 -0.1 1.9 23rd 64.9 62.2 average 104%
Essendon Airport 17.5 +1.4 24.2 4th 7.8 +0.1 0.2 23rd 26.6 49.1 low 54%
Ferny Creek (Dunns Hill) 12.6 +0.2 18.7 4th 7.9 +0.3 4.0 5th 93.0 85.5 average 109%
Frankston AWS 16.5 +0.6 22.4 4th 10.6 +0.1 5.0 23rd
Melbourne Airport 17.3 +0.7 23.8 4th 7.9 -0.4 2.1 23rd 30.8 40.0 average 77%
Melbourne Regional Office 18.2 +1.5 23.5 4th 9.8 +1.2 4.0 23rd 23.0 55.7 low 41%
Moorabbin Airport 17.1 +0.2 24.4 4th 8.2 -0.4 0.8 22nd 40.8 70.0 low 58%
Rhyll 16.8 +0.6 22.0 4th 10.9 +0.3 7.8 22nd 70.6 65.2 average 108%
Scoresby Research Institute 17.0 +0.8 22.8 4th 7.4 -0.8 0.4 23rd 56.4 88.6 low 64%
Viewbank (ARPANSA) 17.4 +0.2 23.9 4th 7.5 -0.2 0.4 22nd 45.0 49.3 average 91%
Wallan (Kilmore Gap) 13.0 +0.2 19.6 4th 7.2 +0.4 3.8 11th 52.8 57.5 average 92%
Wonthaggi 17.2 +0.5 23.5 4th 8.9 +0.3 3.0 22nd 90.7 96.8 average 94%
West Central (district 87)
Avalon Airport 17.6 +0.5 25.7 4th 7.7 +0.2 0.0 23rd 29.2 35.1 average 83%
Grovedale (Geelong Airport) 17.6 +0.5 23.8 4th 7.9 +0.1 0.5 23rd 28.8 46.5 average 62%
Laverton RAAF 17.5 +0.7 25.3 4th 7.8 0.0 0.1 23rd 23.2 46.5 low 50%
Sheoaks 15.8 +0.3 21.8 4th 7.3 0.0 0.8 22nd 44.4 30.8 high 144%
North Central (district 88)
Castlemaine Prison 16.0 +0.3 22.3 4th 5.4 +0.1 0.4 22nd 45.3 57.7 average 79%
Eildon Fire Tower 13.5 +0.1 18.8 4th 6.8 +0.1 3.1 22nd 52.0 55.4 average 94%
Lake Eildon 16.5 +0.3 22.3 4th 6.6 +0.6 0.5 23rd 50.6 78.8 average 64%
Mangalore Airport 17.0 +0.3 22.6 4th 6.0 -0.1 -1.0 12th 37.0 55.3 average 67%
Maryborough 16.9 +0.7 22.1 4th 6.0 -0.1 2.2 22nd 45.4 49.4 average 92%
Redesdale 16.2 +0.2 22.0 4th 4.8 -0.5 -0.2 23rd 58.4 56.7 average 103%
Western Plains (district 89)
Ararat Prison 16.0 +0.6 21.0 3rd 4.7 -0.8 -4.1 23rd 23.3 52.9 low 44%
Ballarat Aerodrome 14.3 +0.7 18.5 9th 5.0 -0.7 -2.4 22nd 33.2 64.8 low 51%
Westmere 16.1   21.5 10th 4.9   -3.2 23rd 27.8
West Coast (district 90)
Aireys Inlet 16.5 +0.3 21.5 10th 9.9 0.0 5.8 23rd 47.6 47.4 average 100%
Cape Nelson Lighthouse 16.3 +0.3 22.3 1st 10.4 -0.4 5.8 23rd 61.6 65.0 average 95%
Cape Otway Lighthouse 15.4 -0.2 21.0 10th 10.2 +0.2 6.2 22nd 90.2 90.6 average 100%
Casterton 16.3   21.6 1st 6.3   -0.6 22nd 49.2
Casterton Showgrounds 17.0 +0.3 22.5 1st 5.9 -1.2 -1.6 23rd 53.5 61.3 average 87%
Colac (Mount Gellibrand) 14.7   19.2 4th 7.8   4.2 12th 42.6 36.2 average 118%
Dartmoor 16.7   21.9 1st 6.8   0.0 23rd 58.6
Hamilton Airport 15.6 -0.1 20.6 1st 6.3 -0.2 -0.4 23rd 28.6 48.6 low 59%
Mortlake Racecourse 16.4 +0.2 21.7 1st 5.5 -1.1 -1.9 22nd 31.8 46.8 low 68%
Port Fairy AWS 16.8 0.0 22.3 1st 8.3 -0.8 2.9 23rd 58.2 59.9 average 97%
Portland (Cashmore Airport) 16.0 +0.1 21.4 1st 7.6 -0.7 0.7 23rd 79.6 76.3 average 104%
Warrnambool Airport NDB 16.5 -0.2 21.0 10th 6.6 -0.6 0.5 23rd 39.0 62.1 low 63%
Weeaproinah 12.4 +0.3 17.0 10th 7.4 +0.1 3.1 22nd 180.6 197.1 average 92%

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 10 am on Tuesday 1 June 2010. 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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