Victoria in summer 2012-13:

Rainfall less than that usually received;

Lengthy warm and sunny periods.

Summary

Bureau of Meteorology data show that across the State of Victoria, overnight minimum temperatures were slightly warmer than those usually experienced. Daytime maximum temperatures at most localities were much warmer than those registered in the past. Total rainfall for the past summer (Dec 2012 to Feb 2013) was generally less than that usually recorded.

Over the northern plains, minimum temperatures were slightly warmer than those usually experienced (average departure from normal 0.6C). Daytime maximum temperatures at most localities were much warmer than those registered in the past (average departure from normal 1.9C). Total rainfall for the past summer (Dec 2012 to Feb 2013) was generally less than that usually recorded (average percentage of normal received 53.3%).

In southern districts, minimum temperatures were slightly warmer than those usually experienced (average departure from normal 0.8C). Daytime maximum temperatures at most localities were much warmer than those registered in the past (average departure from normal 1.5C). Total rainfall for the past summer (Dec 2012 to Feb 2013) was generally slightly less than that usually recorded (average percentage of normal received 69.1%).

Details

In the Mallee, overnight minimum temperatures were warmer than those usually experienced (average departure from normal 1C). Daytime maximum temperatures at most localities were much warmer than those registered in the past (average departure from normal 2.1C). Total rainfall for the past summer (Dec 2012 to Feb 2013) was generally much less than that usually recorded (average percentage of normal received 33.5%).

In the Wimmera, overnight minimum temperatures were near to those usually experienced (average departure from normal -0.4C). Daytime maximum temperatures at most localities were warmer than those registered in the past (average departure from normal 1.3C). Total rainfall for the past summer (December 2012 to February 2013) was generally slightly less than that usually recorded (average percentage of normal received 66%).

In the Northern Country, overnight minimum temperatures were warmer than those usually experienced (average departure from normal 1.2C). Daytime maximum temperatures at most localities were much warmer than those registered in the past (average departure from normal 1.8C). Total rainfall for the past summer (Dec 2012 to Feb 2013) was generally less than that usually recorded (average percentage of normal received 63%).

In Victoria's North Central District, overnight minimum temperatures were slightly warmer than those usually experienced (average departure from normal 0.6C). Daytime maximum temperatures at most localities were much warmer than those registered in the past (average departure from normal 2C). Total rainfall for the past summer (Dec 2012 to Feb 2013) was generally less than that usually recorded (average percentage of normal received 56.5%).

In the North East District, overnight minimum temperatures were slightly warmer than those usually experienced (average departure from normal 0.5C). Daytime maximum temperatures at most localities were much warmer than those registered in the past (average departure from normal 2.3C). Total rainfall for the past summer (Dec 2012 to Feb 2013) was generally much less than that usually recorded (average percentage of normal received 49.3%).

In East Gippsland, overnight minimum temperatures were warmer than those usually experienced (average departure from normal 1C). Daytime maximum temperatures at most localities were much warmer than those registered in the past (average departure from normal 1.5C). Total rainfall for the past summer (December 2012 to February 2013) was generally slightly less than that usually recorded (average percentage of normal received 71.5%).

In West Gippsland, overnight minimum temperatures were slightly warmer than those usually experienced (average departure from normal 0.9C). Daytime maximum temperatures at most localities were warmer than those registered in the past (average departure from normal 1.4C). Total rainfall for the past summer (Dec 2012 to Feb 2013) was generally slightly less than that usually recorded (average percentage of normal received 69%).

In the Central District, overnight minimum temperatures were slightly warmer than those usually experienced (average departure from normal 0.7C). Daytime maximum temperatures at most localities were much warmer than those registered in the past (average departure from normal 1.7C). Total rainfall for the past summer (Dec 2012 to Feb 2013) was generally slightly less than that usually recorded (average percentage of normal received 66%).

In the Western District, overnight minimum temperatures were slightly warmer than those usually experienced (average departure from normal 0.6C). Daytime maximum temperatures at most localities were much warmer than those registered in the past (average departure from normal 1.5C). Total rainfall for the past summer (December 2012 to February 2013) was generally slightly less than that usually recorded (average percentage of normal received 71.5%).

Records

Some sites had their highest summer temperature on record.

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

Some sites had their highest summer mean daily maximum temperature for at least 10 years.

Some sites had their highest summer mean daily minimum temperature for at least 10 years.


Extremes in summer 2012-13
Hottest day 45.7 C at Yarrawonga on 5 Jan 2013
Warmest days on average 33.8 C at Mildura Airport
Coolest days on average 16.2 C at Mount Hotham
Coldest day -0.2 C at Mount Baw Baw on 4 Dec 2012
Coldest night -3.7 C at Dinner Plain (Mount Hotham Airport) on 10 Dec 2012
Coolest nights on average 7.2 C at Mount Baw Baw
Warmest nights on average 16.8 C at Mildura Airport
Warmest night 29.0 C at Echuca Aerodrome on 5 Jan 2013
Warmest on average overall 25.3 C at Mildura Airport
Coolest on average overall 11.8 C at Mount Hotham
Wettest overall 341.8 mm at Mount Hotham
Highest wind gust 159 km/h at Wilsons Promontory Lighthouse on 5 Dec 2012


Record highest summer temperature
Highest temperature
in summer 2012-13 (C)
Previous warmest
for summer
Years of
record
Average for
summer
Mallacoota 42.0 on 18 Jan 2013 41.6 on 1 Feb 2011 20 23.3



Record highest summer mean daily maximum temperature
Mean daily maximum
temperature
for summer 2012-13 (C)
Previous warmest
for summer
Years of
record
Average for
summer
Edi Upper 32.0 31.8 in 2006 25 28.8
Redesdale 30.3 29.7 in 2000 19 27.9
Wallan (Kilmore Gap) 26.3 25.7 in 2006 19 23.5
Eildon Fire Tower 27.5 27.4 in 2000 16 25.7
Orbost 26.6 26.5 in 2006 12 25.1

Highest summer mean daily maximum temperature for at least 10 years
Mean daily maximum
temperature
for summer 2012-13 (C)
Most recent summer
at least this warm
Years since
warmer
Average for
summer
Rutherglen Research 32.4 32.7 in 1980 32 30.4
Strathbogie 28.2 29.2 in 1980* 27 26.3
Ararat Prison 27.9 28.7 in 2000 12 26.1
Bairnsdale Airport 26.6 27.2 in 2000 12 24.9
Bendigo Airport 30.5 30.6 in 2000 12 28.6
Cape Nelson Lighthouse 21.9 22.4 in 2000 12 20.6
Castlemaine Prison 28.5 28.8 in 2000 12 27.3
Colac (Mount Gellibrand) 26.3 26.7 in 2000 12 24.4
Coldstream 28.4 28.7 in 2000 12 26.7
Hamilton Airport 27.3 28.7 in 2000 12 25.6
Maryborough 29.7 30.0 in 2000 12 28.0
Mildura Airport 33.8 34.5 in 2000 12 31.3
Mortlake Racecourse 27.0 27.5 in 2000 12 25.0
Mount Moornapa 26.3 26.4 in 2000 12 24.1
Port Fairy AWS 23.3 24.6 in 2000 12 22.1
Portland (Cashmore Airport) 23.2 23.4 in 2000 12 21.4
Scoresby Research Institute 27.8 27.9 in 2000 12 25.5
Sheoaks 26.6 26.9 in 2000 12 24.7
Viewbank 28.4 28.8 in 2000 12 26.7
Warrnambool Airport NDB 25.1 26.1 in 2000 12 23.8

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported.




Highest summer mean daily minimum temperature for at least 10 years
Mean daily minimum
temperature
for summer 2012-13 (C)
Most recent summer
at least this warm
Years since
warmer
Average for
summer
Wallan (Kilmore Gap) 12.3 12.8 in 2000 12 11.6



Summary statistics for summer 2012-13
Maximum temperatures
for summer
(C)
Minimum temperatures
for summer
(C)
Rainfall
for summer
(millimetres)
Mean for
summer
2012-13
Diff
from
average
Highest for
summer
2012-13
Mean for
summer
2012-13
Diff
from
average
Lowest for
summer
2012-13
Total for
summer
2012-13
Average
for
summer
Rank of
summer
2012-13
Fraction of
summer
average
Southwest Slopes (South) (district 72)
Albury Airport AWS 32.5 +1.8 43.4 5 Jan 2013 15.8 +0.4 6.8 6 Dec 2012 46.6 124.5 low 37%
Hume Reservoir 31.8 +1.9 42.1 5 Jan 2013 16.7 +0.9 7.9 6 Dec 2012 65.6 138.6 low 47%
North Mallee (district 76)
Mildura Airport 33.8 +2.5 45.0 17 Jan 2013 16.8 +0.8 8.5 14 Jan 2013 20.0 69.5 low 29%
Ouyen (Post Office) 33.0 +1.7 45.0 4 Jan 2013 15.9 +1.1 8.4 2 Feb 2013 26.0 70.8 low 37%
Walpeup Research 32.8 +1.9 44.8 4 Jan 2013 15.6 +0.9 8.0 3 Dec 2012 18.0 70.0 v low 26%
South Mallee (district 77)
Hopetoun Airport 32.4   45.4 17 Jan 2013 14.4   6.1 6 Dec 2012 18.0
Swan Hill Aerodrome 32.9 +1.2 45.4 5 Jan 2013 15.3 +0.2 6.6 6 Dec 2012 24.6 75.5 lowest 33%
North Wimmera (district 78)
Nhill Aerodrome 30.6   43.8 4 Jan 2013 13.2   5.4 10 Dec 2012 50.8 73.6 average 69%
Warracknabeal Museum 31.0 +1.0 43.9 4 Jan 2013 13.8 +0.3 6.2 17 Dec 2012 56.8 76.8 average 74%
South Wimmera (district 79)
Edenhope Airport 28.7   43.7 4 Jan 2013 12.4   4.6 10 Dec 2012 36.4
Grampians (Mount William) 20.6   35.1 4 Jan 2013 8.5   1.1 4 Dec 2012 89.0
Horsham Aerodrome 30.6 +0.8 44.2 4 Jan 2013 11.5 -0.3 3.9 10 Dec 2012 45.0 82.4 low 55%
Kanagulk 29.2   43.6 4 Jan 2013 12.0   4.0 17 Dec 2012 46.4
Longerenong 30.6 +1.4 43.9 4 Jan 2013 12.5 +0.1 3.7 17 Dec 2012 38.4 75.4 low 51%
Pyrenees (Ben Nevis) 25.2   38.0 4 Jan 2013 11.3   3.7 4 Dec 2012 65.8
Stawell Aerodrome 28.8 +0.8 41.9 4 Jan 2013 13.3 +0.5 6.2 17 Dec 2012 68.4 108.9 low 63%
Lower North (district 80)
Charlton 31.9   43.6 4 Jan 2013 14.5   6.7 17 Dec 2012 35.2
Echuca Aerodrome 32.1 +2.0 42.8 5 Jan 2013 15.2 +0.6 8.8 14 Jan 2013 43.4 83.1 low 52%
Kerang 32.5 +1.7 44.5 5 Jan 2013 16.0 +1.4 9.0 6 Dec 2012 45.6 74.9 low 61%
Kyabram 31.5 +2.2 41.9 5 Jan 2013 14.8 +0.9 7.5 6 Dec 2012 59.4 96.1 low 62%
Upper North (district 81)
Bendigo Airport 30.5 +1.9 41.3 17 Jan 2013 14.1 +0.8 5.9 17 Dec 2012 70.6 113.3 average 62%
Shepparton Airport 31.4 +1.0 42.2 7 Jan 2013 14.9 +0.7 8.9 14 Jan 2013 94.4 102.5 average 92%
Tatura Inst Sustainable Ag 30.4 +1.6 41.2 7 Jan 2013 14.4 +0.8 7.3 3 Dec 2012 69.0 101.9 average 68%
Yarrawonga 32.6 +1.4 45.7 5 Jan 2013 15.4 +0.5 7.0 6 Dec 2012 72.6 121.3 average 60%
Lower Northeast (district 82)
Benalla Airport 31.8   44.0 5 Jan 2013 14.7   6.8 3 Dec 2012 72.4
Corryong Airport 31.7   43.5 18 Jan 2013 12.2   1.2 6 Dec 2012 218.0
Dartmouth Reservoir 29.8 +1.4 40.5 5 Jan 2013 13.3 +0.3 7.2 18 Dec 2012 152.8 188.3 average 81%
Hunters Hill 26.2 +1.8 36.8 5 Jan 2013 14.0 +0.7 3.7 5 Dec 2012 221.2 220.7 average 100%
Rutherglen Research 32.4 +2.0 44.5 5 Jan 2013 13.2 +0.2 4.4 6 Dec 2012 44.2 119.9 low 37%
Strathbogie 28.2 +1.9 40.7 5 Jan 2013 11.5 +0.6 4.8 3 Dec 2012 144.4 148.6 average 97%
Wangaratta Aero 32.2 +1.7 44.6 5 Jan 2013 13.5 +0.3 5.9 3 Dec 2012 50.6 130.5 low 39%
Upper Northeast (district 83)
Dinner Plain (Mount Hotham Airport) 22.1 +1.0 33.0 5 Jan 2013 7.8 +0.1 -3.7 10 Dec 2012 183.4 199.4 average 92%
Edi Upper 32.0 +3.2 42.4 5 Jan 2013 13.2 +0.1 3.8 6 Dec 2012 118.8 201.3 low 59%
Falls Creek 17.5 +0.9 27.5 6 Jan 2013 8.4 +0.7 -1.9 6 Dec 2012 271.2 315.7 average 86%
Mount Buller 18.1 +1.9 28.7 5 Jan 2013 8.9 +1.2 -1.6 2 Feb 2013 218.0 252.4 average 86%
Mount Hotham 16.2 +1.1 26.0 5 Jan 2013 7.3 +0.2 -2.8 6 Dec 2012 341.8 317.2 average 108%
Omeo 26.6   38.1 18 Jan 2013 9.4   -1.0 6 Dec 2012 147.0
East Gippsland (district 84)
Combienbar AWS 25.6 +1.5 39.7 4 Jan 2013 12.7 0.0 5.5 5 Dec 2012 277.2 234.5 average 118%
Gabo Island Lighthouse 22.0 +1.1 33.0 8 Jan 2013 16.4 +1.0 10.0 5 Dec 2012 181.6 204.0 average 89%
Gelantipy 24.1 +1.5 37.3 18 Jan 2013 10.9 +0.1 1.4 10 Dec 2012 154.8 198.9 low 78%
Lakes Entrance (Eastern Beach Road) 24.3   40.2 4 Jan 2013 13.9   6.9 10 Dec 2012 98.2
Mallacoota 24.1 +0.8 42.0 18 Jan 2013 15.0 +0.2 7.9 11 Dec 2012 192.8 199.6 average 97%
Mount Nowa Nowa 25.2 +1.5 41.5 4 Jan 2013 13.7 +0.3 7.1 5 Dec 2012
Orbost 26.6 +1.5 43.2 4 Jan 2013 13.9 0.0 6.6 10 Dec 2012 111.4 172.0 low 65%
Point Hicks (Lighthouse) 24.8 +1.7 40.7 18 Jan 2013 15.3 0.0 8.8 30 Dec 2012 110.7 191.9 low 58%
West Gippsland (district 85)
Bairnsdale Airport 26.6 +1.7 43.5 4 Jan 2013 12.4 +0.2 4.8 10 Dec 2012 75.0 157.2 lowest 48%
East Sale Airport 26.2 +1.5 44.3 4 Jan 2013 12.7 +0.3 6.9 10 Dec 2012 93.0 142.1 low 65%
Morwell (Latrobe Valley Airport) 27.5 +1.8 41.2 4 Jan 2013 12.4 +0.1 4.3 10 Dec 2012 125.8 162.7 low 77%
Mount Baw Baw 16.5 +0.6 27.3 5 Jan 2013 7.2 -0.2 -2.4 5 Dec 2012 268.0 384.0 v low 70%
Mount Moornapa 26.3 +2.2 41.5 4 Jan 2013 12.8 +0.2 6.5 5 Dec 2012 92.6 188.4 low 49%
Pound Creek 24.6   40.0 4 Jan 2013 12.5   4.5 22 Dec 2012 102.8
Willow Grove (Blue Rock Reservoir) 26.1 +0.7 38.5 4 Jan 2013 12.4 -0.2 4.7 5 Dec 2012 134.9 168.4 low 80%
Wilsons Promontory Lighthouse 21.2 +1.3 35.7 4 Jan 2013 15.2 +1.4 8.1 5 Dec 2012 115.4 161.6 low 71%
Yarram Airport 25.2   41.4 4 Jan 2013 12.3   4.2 10 Dec 2012 125.0
East Central (district 86)
Bundoora (Latrobe University) 27.5 +1.5 40.8 4 Jan 2013 14.2 +0.7 8.2 30 Jan 2013 110.7 156.3 average 71%
Cerberus 24.9 +1.1 40.7 4 Jan 2013 13.3 0.0 6.1 22 Dec 2012 106.4 131.8 average 81%
Coldstream 28.4 +1.7 40.1 17 Jan 2013 11.2 +0.1 4.5 30 Dec 2012 107.6 156.2 low 69%
Coldstream Comparison 28.4   40.0 17 Jan 2013 11.1   4.3 30 Dec 2012 107.8
Cranbourne Botanic Gardens 26.0 +1.2 39.5 17 Jan 2013 12.8 -0.3 6.8 22 Dec 2012 120.1 166.7 low 72%
Essendon Airport 27.4 +2.0 41.7 17 Jan 2013 14.5 +1.5 8.7 17 Dec 2012 85.0 141.7 low 60%
Ferny Creek 24.3   36.4 4 Jan 2013 12.5   5.9 4 Dec 2012 155.8
Frankston AWS 24.9 +1.0 38.4 4 Jan 2013 15.0 -0.1 8.4 5 Dec 2012
Melbourne Airport 27.7 +2.0 41.5 4 Jan 2013 13.8 +0.5 7.7 17 Dec 2012 83.2 134.3 low 62%
Melbourne Regional Office 27.4 +2.1 41.1 4 Jan 2013 16.2 +2.3 11.8 17 Dec 2012 108.0 154.7 average 70%
Moorabbin Airport 26.7 +1.6 41.5 4 Jan 2013 14.3 +0.7 8.2 10 Dec 2012 100.2 151.0 low 66%
Phillip Island Penguin Reserve 23.4 +0.3 38.0 4 Jan 2013 14.0 +0.7 7.0 22 Dec 2012 82.8 120.8 average 69%
Rhyll 24.3 +1.2 35.9 4 Jan 2013 15.4 +0.5 9.1 4 Dec 2012 124.2 126.1 average 98%
Scoresby Research Institute 27.8 +2.3 40.1 17 Jan 2013 13.5 +0.5 7.1 10 Dec 2012 134.2 183.8 low 73%
Viewbank 28.4 +1.7 41.0 17 Jan 2013 14.1 +0.3 8.3 22 Dec 2012 111.8 163.3 low 68%
Wallan (Kilmore Gap) 26.3 +2.8 38.2 7 Jan 2013 12.3 +0.7 6.4 4 Dec 2012 115.4 150.4 average 77%
Wonthaggi 24.6 +1.1 40.1 4 Jan 2013 13.7 +1.0 7.0 10 Dec 2012 143.0 156.5 average 91%
West Central (district 87)
Avalon Airport 26.8 +1.4 43.0 4 Jan 2013 13.4 0.0 7.1 22 Dec 2012 89.8 94.8 average 95%
Breakwater (Geelong Racecourse) 25.9   42.2 4 Jan 2013 13.6   7.3 21 Dec 2012 56.8
Laverton RAAF 26.4 +1.4 41.7 4 Jan 2013 14.1 +0.8 7.0 17 Dec 2012 90.0 132.7 low 68%
Sheoaks 26.6 +1.9 40.9 4 Jan 2013 11.4 -0.4 4.5 21 Dec 2012 85.0 109.9 average 77%
North Central (district 88)
Castlemaine Prison 28.5 +1.2 39.5 17 Jan 2013 13.2 +0.8 3.8 17 Dec 2012 53.9 122.2 low 44%
Eildon Fire Tower 27.5 +1.8 37.2 7 Jan 2013 13.2 +0.5 5.2 5 Dec 2012 104.2 125.6 average 83%
Lake Eildon 30.2 +2.2 40.0 7 Jan 2013 12.7 +0.6 4.7 2 Feb 2013 120.0 146.9 average 82%
Mangalore Airport 30.8 +2.2 41.5 7 Jan 2013 14.1 +0.7 8.5 15 Jan 2013 52.8 118.6 low 45%
Maryborough 29.7 +1.7 41.4 4 Jan 2013 13.0 +0.5 6.0 17 Dec 2012 67.8 102.1 average 66%
Redesdale 30.3 +2.4 41.1 7 Jan 2013 12.5 +0.4 4.8 17 Dec 2012 75.0 110.1 average 68%
Western Plains (district 89)
Ararat Prison 27.9 +1.8 41.0 4 Jan 2013 11.6 +1.0 4.0 17 Dec 2012 66.1 111.3 low 59%
Ballarat Aerodrome 26.2 +2.0 39.0 4 Jan 2013 11.2 +0.6 3.4 30 Jan 2013 150.6 134.8 average 112%
Westmere 27.9   42.6 4 Jan 2013 10.0   1.9 21 Dec 2012 36.4
West Coast (district 90)
Aireys Inlet 23.6 +1.4 43.3 4 Jan 2013 13.9 +0.3 8.2 17 Dec 2012 90.2 115.6 average 78%
Cape Nelson Lighthouse 21.9 +1.3 41.9 4 Jan 2013 15.1 +0.9 7.5 21 Dec 2012 80.8 103.1 low 78%
Cape Otway Lighthouse 21.8 +0.9 40.9 4 Jan 2013 14.4 +1.3 9.6 4 Dec 2012 83.8 139.7 v low 60%
Casterton 27.4   42.9 4 Jan 2013 11.8   4.2 17 Dec 2012 30.2
Colac (Mount Gellibrand) 26.3 +1.9 42.1 4 Jan 2013 12.2 +0.3 6.7 4 Dec 2012 77.8 105.8 low 74%
Dartmoor 26.7   44.4 4 Jan 2013 12.0   4.6 14 Jan 2013 64.8
Hamilton Airport 27.3 +1.7 42.4 4 Jan 2013 10.9 +0.4 3.8 10 Dec 2012 42.2 105.5 v low 40%
Mortlake Racecourse 27.0 +2.0 42.8 4 Jan 2013 10.2 -0.3 2.3 14 Jan 2013 69.2 112.9 low 61%
Port Fairy AWS 23.3 +1.2 43.1 4 Jan 2013 14.4 +0.8 7.7 21 Dec 2012 89.8 106.4 average 84%
Portland (Cashmore Airport) 23.2 +1.8 42.1 4 Jan 2013 12.7 +0.8 5.3 22 Dec 2012 95.2 115.0 average 83%
Portland NTC AWS 21.2   40.0 4 Jan 2013 15.2   8.8 21 Dec 2012
Warrnambool Airport NDB 25.1 +1.3 43.0 4 Jan 2013 12.0 +0.7 4.1 22 Dec 2012 65.8 116.6 low 56%

Notes

A Seasonal 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 4 am on Friday 1 March 2013. 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.

The ACORN-SAT dataset is being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.


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