Victoria in summer 2011-12: Rainfall slightly more than that usually received.

    Highlights

    • Overnight temperatures slightly warmer than those in most years
    • Daytime temperatures near to those in most years
    • Rainfall slightly more than that in most years
    • Humidity greater than usual.
    • On Christmas day, there was an exceptionally severe hailstorm, which affected much of Melbourne's northern and eastern suburbs.
    • To 9am on the morning of the 28th, several places along the Murray River (including Yarrawonga with 119.8 mm & Cobram with 108.0 mm) recorded their all time highest 24 hour rainfall total.
    • The maximum temperature of 0.6 C at Mount Hotham on 11 January, was the lowest maximum temperature ever recorded anywhere in Australia in January.
    • The State's highest maximum temperature for the summer was 43.0 deg C at Dartmoor on 2 January.
    • Melbourne's highest temperature was 40.0 deg C, also on 2 January. 

    Also:

Some sites had their highest total summer rainfall on record.

Some sites had their lowest summer temperature on record.

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

Note:

There is a map of total rainfall below.

There is a map of rainfall deciles below.

There is a map of mean maximum temperatures below.

There is a map of maximum temperature anomalies below.

There is a map of mean minimum temperatures below.

There is a map of minimum temperature anomalies below.

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 near to those registered in the past. Total rainfall for the past summer (Dec 2011 to Feb 2012) was generally slightly more than that usually recorded.

Over the northern plains, minimum temperatures were slightly warmer than those usually experienced (average departure from normal 0.5C). Daytime maximum temperatures at most localities were near to those registered in the past (average departure from normal 0.1C). Total rainfall for the past summer (Dec 2011 to Feb 2012) was generally slightly more than that usually recorded (average percentage of normal received 127%).

In southern districts, minimum temperatures were warmer than those usually experienced (average departure from normal 1C). Daytime maximum temperatures at most localities were near to those registered in the past (average departure from normal 0.3C). Total rainfall for the past summer (Dec 2011 to Feb 2012) was generally close to that usually recorded (average percentage of normal received 102.8%).

Melbourne climate summary for the past summer (Dec 2011 to Feb 2012)

Rainfall close to that usually received.

Located in the Central District at the head of Port Phillip Bay, Melbourne is Victoria's State Capital. Here, overnight minimum temperatures were much warmer than those usually experienced and averaged 16.3C (departure from normal 2.4C). That the overnight temperatures in Melbourne are higher than those in most surrounding localities is a consequence of the city being under the influence of the effect of urbanisation (cities are usually warmer than their rural surroundings, especially at night, because of heat stored in bricks and concrete and trapped between close-packed buildings). Daytime maximum temperatures were warmer than those usually experienced and averaged 26.5C (departure from normal 1.2C). Total rainfall for the past summer (Dec 2011 to Feb 2012) was 167.2 mm, this being close to that usually recorded (normal 155.0 mm, percentage of normal received 108%). Some 20 kilometres northwest of the Melbourne city centre, and more representative of the suburbs, is Melbourne Airport. Here, overnight minimum temperatures were just slightly warmer than those usually experienced and averaged 13.8C (departure from normal 0.5C). Daytime maximum temperatures were also slightly warmer than those usually experienced and averaged 26.2C (departure from normal 0.5C). Total rainfall for the past twelve months was 154.6 mm, this being slightly more than that usually recorded (normal 135.6 mm, percentage of normal received 114%).

Further information

Media
(03) 9669 4057
Enquiries

Extremes in summer 2011-12
Hottest day 43.0 C at Dartmoor on 2 Jan 2012
Warmest days on average 31.6 C at Ouyen (Post Office)
31.6 C at Walpeup Research
Coolest days on average 13.6 C at Mount Hotham
Coldest day 0.6 C at Mount Hotham on 11 Jan 2012
Coldest night -4.5 C at Mount Hotham on 5 Dec 2011
Coolest nights on average 5.9 C at Mount Hotham
Warmest nights on average 16.4 C at Mildura Airport
Warmest night 26.3 C at Cape Otway Lighthouse on 26 Feb 2012
Warmest on average overall 23.9 C at Mildura Airport
Coolest on average overall 9.7 C at Mount Hotham
Wettest overall 546.8 mm at Falls Creek (Rocky Valley)
Highest wind gust 144 km/h at Mount Hotham on 8 Jan 2012

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


Record highest total summer rainfall
Total rainfall
for summer 2011-12 (mm)
Previous wettest
for summer
Years of
record
Average for
summer
Myrhee (Handcocks) 343.2 309.0 in 2004 12 181.1

Highest total summer rainfall for at least 10 years
Total rainfall
for summer 2011-12 (mm)
Most recent summer
at least this wet
Years since
wetter
Average for
summer
Harrietville 403.5 445.8 in 1993* 15 230.6
Cheltenham Kingston Centre 175.6 247.4 in 1995* 12 160.8

* 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 maximum temperature for at least 10 years
Mean daily maximum
temperature
for summer 2011-12 (C)
Most recent summer
at least this warm
Years since
warmer
Average for
summer
Hamilton Airport 27.2 28.7 in 2000 11 25.5
Mortlake Racecourse 26.8 27.5 in 2000 11 24.9
Cape Otway Lighthouse 21.8 22.4 in 2000* 10 20.9

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




Record lowest summer mean daily maximum temperature
Mean daily maximum
temperature
for summer 2011-12 (C)
Previous coolest
for summer
Years of
record
Average for
summer
Mount Baw Baw 14.4 14.9 in 2004 12 16.0

Lowest summer mean daily maximum temperature for at least 10 years
Mean daily maximum
temperature
for summer 2011-12 (C)
Most recent summer
at least this cool
Years since
cooler
Average for
summer
Dinner Plain (Mount Hotham Airport) 19.3 18.5 in 2001 10 21.3
Falls Creek 15.5 14.5 in 2001 10 16.7
Mount Hotham 13.6 13.4 in 2001 10 15.2
Mount Moornapa 23.2 21.0 in 2001 10 24.2



Record lowest summer temperature
Lowest temperature
in summer 2011-12 (C)
Previous coolest
for summer
Years of
record
Average for
summer
Kyabram DPI 3.7 on 1 Dec 2011 = 3.7 on 28 Dec 2010 47 13.9
Melbourne Airport 3.5 on 5 Dec 2011 4.1 on 15 Dec 1986 42 13.2
Cranbourne Botanic Gardens 4.1 on 5 Dec 2011 5.2 on 1 Dec 1994 23 13.1
Wallan (Kilmore Gap) 3.0 on 5 Dec 2011 = 3.0 on 12 Dec 1995 19 11.6
Shepparton Airport 4.0 on 5 Dec 2011 4.3 on 27 Dec 2001 16 14.1



Record highest summer mean daily minimum temperature
Mean daily minimum
temperature
for summer 2011-12 (C)
Previous warmest
for summer
Years of
record
Average for
summer
Ararat Prison 12.5 12.3 in 2000 41 10.5
Portland (Cashmore Airport) 13.1 13.0 in 1998 28 11.8
Port Fairy AWS 14.9 14.5 in 2000 20 13.6
Rhyll 15.8 = 15.8 in 2007 20 14.9
Cape Nelson Lighthouse 15.2 = 15.2 in 2000 16 14.2

Highest summer mean daily minimum temperature for at least 10 years
Mean daily minimum
temperature
for summer 2011-12 (C)
Most recent summer
at least this warm
Years since
warmer
Average for
summer
Cape Otway Lighthouse 15.0 16.2 in 1897* 108 13.0
Phillip Island Penguin Reserve 14.3 14.6 in 1994* 14 13.2
Aireys Inlet 14.8 14.9 in 2000 11 13.5
Cerberus 14.3 14.5 in 2000 11 13.2
Frankston AWS 15.7 16.4 in 2000 11 15.1
Hamilton Airport 11.5 11.9 in 2000 11 10.5
Stawell Aerodrome 13.7 13.8 in 2000 11 12.7
Warrnambool Airport NDB 12.0 =12.0 in 2000 11 11.3
Maryborough 13.4 14.0 in 2000* 10 12.4
Wonthaggi 13.9 14.4 in 2000* 10 12.6

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




Lowest summer mean daily minimum temperature for at least 10 years
Mean daily minimum
temperature
for summer 2011-12 (C)
Most recent summer
at least this cool
Years since
cooler
Average for
summer
Mount Buller 7.3 6.2 in 2001 10 7.8
Mount Hotham 5.9 5.4 in 2001 10 7.1



Summary statistics for summer 2011-12
Maximum temperatures
for summer
(C)
Minimum temperatures
for summer
(C)
Rainfall
for summer
(millimetres)
Mean for
summer
2011-12
Diff
from
average
Highest for
summer
2011-12
Mean for
summer
2011-12
Diff
from
average
Lowest for
summer
2011-12
Total for
summer
2011-12
Average
for
summer
Rank of
summer
2011-12
Fraction of
summer
average
Southwest Slopes (South) (district 72)
Albury Airport AWS 29.5 -1.2 38.9 3 Jan 2012 15.1 -0.4 6.2 12 Jan 2012 142.0 129.0 high 110%
Hume Reservoir 29.4 -0.6 37.7 3 Jan 2012 16.0 +0.2 7.0 12 Jan 2012 199.6 139.4 high 143%
North Mallee (district 76)
Mildura Airport 31.5 +0.2 40.4 2 Jan 2012 16.4 +0.4 8.8 1 Dec 2011 111.6 70.3 high 159%
Ouyen (Post Office) 31.6 +0.3 41.3 2 Jan 2012 15.9 +1.1 7.3 1 Dec 2011 23.8 71.3 low 33%
Walpeup Research 31.6 +0.7 41.1 2 Jan 2012 15.6 +0.9 6.1 1 Dec 2011 36.0 70.8 low 51%
South Mallee (district 77)
Hopetoun Airport 31.2   41.8 2 Jan 2012 14.7   5.5 1 Dec 2011 72.2
Swan Hill Aerodrome 31.4 -0.3 41.2 3 Jan 2012 15.6 +0.5 6.8 1 Dec 2011 82.0 78.8 high 104%
North Wimmera (district 78)
Nhill Aerodrome 30.2   42.6 2 Jan 2012 13.4   4.5 5 Dec 2011 34.2
Warracknabeal Museum 30.2 +0.2 40.9 2 Jan 2012 14.2 +0.8 5.0 1 Dec 2011 77.4 77.3 average 100%
South Wimmera (district 79)
Edenhope Airport 28.8   42.6 2 Jan 2012 13.1   3.9 14 Dec 2011 31.2
Grampians (Mount William) 19.2   32.1 2 Jan 2012 8.8   0.7 4 Dec 2011 162.8
Horsham Aerodrome 30.0 +0.2 42.0 2 Jan 2012 12.4 +0.7 3.6 14 Dec 2011 42.4 84.9 lowest 50%
Horsham Polkemmet Rd 29.8 +0.7 42.9 2 Jan 2012 12.6 -0.1 3.2 5 Dec 2011 40.2 77.5 low 52%
Kanagulk 28.9   42.5 2 Jan 2012 12.7   4.4 1 Dec 2011 40.8
Longerenong 29.9 +0.8 41.6 2 Jan 2012 13.3 +0.9 3.9 1 Dec 2011 60.4 75.7 average 80%
Pyrenees (Ben Nevis) 23.2   35.4 2 Jan 2012 11.5   3.6 1 Dec 2011 163.6
Stawell Aerodrome 27.9 -0.1 40.5 2 Jan 2012 13.7 +1.0 6.0 1 Dec 2011 144.0 111.4 high 129%
Lower North (district 80)
Charlton 30.7   41.1 2 Jan 2012 14.8   5.8 1 Dec 2011 59.0
Kerang 30.9 +0.1 40.7 3 Jan 2012 15.6 +1.1 6.3 1 Dec 2011 80.0 75.2 average 106%
Kyabram DPI 30.0 +0.7 41.9 3 Jan 2012 14.6 +0.7 3.7 1 Dec 2011 167.2 96.9 high 173%
Upper North (district 81)
Bendigo Airport 28.6 0.0 39.0 2 Jan 2012 14.1 +0.9 3.8 1 Dec 2011 139.8 115.3 high 121%
Shepparton Airport 29.7 -0.7 40.7 3 Jan 2012 14.5 +0.4 4.0 5 Dec 2011 139.2 103.0 high 135%
Tatura Inst Sustainable Ag 28.7 -0.1 40.2 3 Jan 2012 14.5 +0.9 2.8 5 Dec 2011 170.4 102.3 high 167%
Yarrawonga 30.5 -0.7 40.3 3 Jan 2012 15.1 +0.3 5.9 1 Dec 2011 236.2 123.9 v high 191%
Lower Northeast (district 82)
Beechworth Woolshed 28.1 -1.4 37.0 3 Jan 2012 12.8 +0.4 2.8 1 Dec 2011 269.2 163.0 high 165%
Benalla Airport 29.4   40.0 3 Jan 2012 14.3   6.7 1 Dec 2011 194.5
Corryong Airport 28.7   36.0 20 Jan 2012 11.9   3.5 5 Dec 2011 199.3
Dartmouth Reservoir 27.1 -1.4 35.7 3 Jan 2012 13.7 +0.8 4.0 12 Jan 2012 333.2 188.9 v high 176%
Hunters Hill 23.5 -1.0 31.2 26 Jan 2012 12.3 -1.0 3.1 5 Dec 2011 265.8 220.7 high 120%
Rutherglen Research 29.6 -0.8 39.7 3 Jan 2012 12.9 -0.1 2.9 1 Dec 2011 260.2 120.6 v high 216%
Strathbogie 25.6 -0.8 36.0 3 Jan 2012 11.2 +0.4 2.6 1 Dec 2011 251.2 148.6 high 169%
Wangaratta Aero 29.7 -0.8 39.6 3 Jan 2012 12.7 -0.5 3.5 5 Dec 2011 202.2 133.7 high 151%
Upper Northeast (district 83)
Dinner Plain (Mount Hotham Airport) 19.3 -2.0 27.2 29 Jan 2012 7.0 -0.7 -3.1 1 Dec 2011 260.4 200.8 high 130%
Edi Upper 28.4 -0.5 37.8 4 Jan 2012 12.4 -0.7 4.2 2 Dec 2011 240.0 202.7 high 118%
Falls Creek 15.5 -1.2 22.3 28 Jan 2012 7.0 -0.8 -3.2 5 Dec 2011 437.6 318.3 high 137%
Mount Buller 15.1 -1.1 23.3 3 Jan 2012 7.3 -0.5 -2.9 1 Dec 2011 409.8 253.6 v high 162%
Mount Hotham 13.6 -1.6 21.5 3 Jan 2012 5.9 -1.2 -4.5 5 Dec 2011 494.6 315.9 high 157%
Omeo 23.8   33.5 3 Jan 2012 9.4   0.6 1 Dec 2011 207.4
East Gippsland (district 84)
Combienbar AWS 23.1 -1.1 35.1 3 Jan 2012 12.5 -0.2 5.1 5 Dec 2011 66.0 232.0 lowest 28%
Gabo Island Lighthouse 21.2 +0.3 26.6 27 Feb 2012 16.0 +0.6 9.8 3 Dec 2011 177.8 204.2 average 87%
Gelantipy 21.7 -0.9 31.9 29 Jan 2012 10.5 -0.3 1.6 6 Dec 2011 227.6 201.3 average 113%
Lakes Entrance (Eastern Beach Road) 22.9   36.2 25 Feb 2012 14.3   8.2 15 Dec 2011 172.8
Mallacoota 22.9 -0.4 31.7 25 Feb 2012 14.8 0.0 6.2 3 Dec 2011 170.2 199.8 average 85%
Mount Nowa Nowa 23.2 -0.6 38.0 3 Jan 2012 13.9 +0.5 6.0 5 Dec 2011 199.4 211.7 average 94%
Orbost 24.5 -0.6 37.4 5 Feb 2012 13.9 0.0 6.3 6 Dec 2011 175.8 177.0 average 99%
Point Hicks (Lighthouse) 23.8 +0.7 33.7 5 Feb 2012 15.2 -0.1 7.6 3 Dec 2011 214.2 193.5 average 111%
West Gippsland (district 85)
Bairnsdale Airport 24.9 0.0 39.1 3 Jan 2012 12.3 +0.1 4.4 15 Dec 2011 149.2 159.7 average 93%
East Sale Airport 24.5 -0.2 37.5 3 Jan 2012 13.2 +0.8 5.7 2 Dec 2011 182.0 142.9 high 127%
Morwell (Latrobe Valley Airport) 25.3 -0.4 37.9 2 Jan 2012 12.8 +0.6 4.5 14 Dec 2011 198.8 164.1 high 121%
Mount Baw Baw 14.4 -1.6 24.7 3 Jan 2012 6.7 -0.8 -2.6 5 Dec 2011 449.8 394.5 high 114%
Mount Moornapa 23.2 -1.0 37.3 3 Jan 2012 12.8 +0.2 5.1 5 Dec 2011 194.2 194.1 average 100%
Noojee (Slivar) 24.2 -0.1 34.9 25 Feb 2012 11.6 +1.0 3.1 5 Dec 2011 246.8 224.8 average 110%
Pound Creek 24.1   37.5 2 Jan 2012 12.5   2.9 5 Dec 2011 178.4
Willow Grove (Blue Rock Reservoir) 24.2 -1.2 35.6 26 Feb 2012 12.8 +0.2 5.6 5 Dec 2011 174.2 169.7 average 103%
Yarram Airport 23.7   35.6 25 Feb 2012 12.2   3.1 3 Dec 2011 187.6
East Central (district 86)
Cerberus 24.3 +0.6 39.5 2 Jan 2012 14.3 +1.1 4.9 5 Dec 2011 156.8 132.9 average 118%
Coldstream 26.5 -0.2 36.5 2 Jan 2012 11.7 +0.6 3.0 8 Feb 2012 203.2 158.9 high 128%
Coldstream Comparison 26.4   36.4 2 Jan 2012 11.5   2.9 8 Feb 2012 203.2
Cranbourne Botanic Gardens 24.7 -0.2 38.4 2 Jan 2012 13.3 +0.2 4.1 5 Dec 2011 164.3 175.7 average 94%
Essendon Airport 26.1 +0.7 39.0 2 Jan 2012 14.4 +1.4 4.7 5 Dec 2011 164.2 142.6 average 115%
Ferny Creek 22.4   33.6 2 Jan 2012 12.7   4.6 5 Dec 2011 318.0
Frankston AWS 24.6 +0.7 36.1 2 Jan 2012 15.7 +0.6 8.3 5 Dec 2011
Melbourne Airport 26.2 +0.5 39.2 2 Jan 2012 13.8 +0.6 3.5 5 Dec 2011 154.6 135.6 average 114%
Melbourne Regional Office 26.5 +1.2 40.0 2 Jan 2012 16.3 +2.4 8.6 5 Dec 2011 167.2 155.0 average 108%
Moorabbin Airport 25.5 +0.4 39.7 2 Jan 2012 14.4 +0.8 5.6 5 Dec 2011 132.8 151.9 average 87%
Phillip Island Penguin Reserve 23.4 +0.2 38.6 2 Jan 2012 14.3 +1.1 3.7 5 Dec 2011 139.3 122.3 average 114%
Rhyll 23.9 +0.8 35.0 25 Feb 2012 15.8 +0.9 9.9 5 Dec 2011 179.4 126.2 high 142%
Scoresby Research Institute 26.2 +0.7 38.1 2 Jan 2012 13.5 +0.5 4.1 5 Dec 2011 200.4 184.6 average 109%
Viewbank (ARPANSA) 26.8 +0.1 38.8 2 Jan 2012 14.0 +0.2 5.0 5 Dec 2011 215.4 167.2 high 129%
Wallan (Kilmore Gap) 23.1 -0.4 34.2 2 Jan 2012 12.1 +0.5 3.0 5 Dec 2011 208.2 152.4 high 137%
Wonthaggi 24.4 +1.0 37.9 2 Jan 2012 13.9 +1.3 5.4 5 Dec 2011 188.2 156.7 high 120%
West Central (district 87)
Avalon Airport 25.7 +0.3 41.1 2 Jan 2012 14.0 +0.7 6.9 1 Dec 2011 103.6 95.0 average 109%
Breakwater (Geelong Racecourse) 24.9   41.8 2 Jan 2012 14.2   6.8 5 Dec 2011 113.6
Laverton RAAF 25.4 +0.5 39.5 2 Jan 2012 14.6 +1.3 5.8 6 Dec 2011 140.6 133.3 average 105%
Sheoaks 25.3 +0.7 39.7 2 Jan 2012 12.2 +0.5 3.2 5 Dec 2011 95.4 111.3 average 86%
North Central (district 88)
Castlemaine Prison 26.7 -0.6 38.2 2 Jan 2012 13.0 +0.6 2.1 1 Dec 2011 291.2 123.8 v high 235%
Eildon Fire Tower 25.0 -0.8 35.5 3 Jan 2012 12.8 +0.1 4.6 1 Dec 2011 203.2 126.9 high 160%
Lake Eildon 28.0 0.0 38.0 3 Jan 2012 12.7 +0.6 4.6 14 Dec 2011 223.2 147.1 high 152%
Mangalore Airport 28.5 -0.1 40.4 3 Jan 2012 14.0 +0.6 4.2 1 Dec 2011 181.4 119.9 high 151%
Maryborough 28.2 +0.2 39.7 2 Jan 2012 13.4 +1.0 4.9 5 Dec 2011 121.9 102.3 high 119%
Redesdale 28.5 +0.6 39.2 2 Jan 2012 12.6 +0.5 1.6 1 Dec 2011 185.8 110.5 high 168%
Western Plains (district 89)
Ararat Prison 27.2 +1.1 39.8 2 Jan 2012 12.5 +2.0 2.1 8 Feb 2012 77.0 112.3 average 69%
Ballarat Aerodrome 25.1 +0.9 37.4 2 Jan 2012 11.6 +1.1 1.6 1 Dec 2011 134.8 134.7 average 100%
Westmere 27.3   41.4 2 Jan 2012 11.5   2.9 5 Dec 2011 48.4
West Coast (district 90)
Aireys Inlet 23.3 +1.2 41.9 2 Jan 2012 14.8 +1.3 8.0 1 Dec 2011 90.2 117.0 average 77%
Cape Nelson Lighthouse 21.6 +1.0 40.2 2 Jan 2012 15.2 +1.0 10.7 1 Dec 2011 57.8 104.4 low 55%
Cape Otway Lighthouse 21.8 +0.9 38.4 25 Feb 2012 15.0 +2.0 9.9 1 Dec 2011 82.0 140.0 v low 59%
Casterton 26.8   40.8 2 Jan 2012 12.5   3.9 6 Jan 2012 53.6
Colac (Mount Gellibrand) 24.7 +0.3 40.8 2 Jan 2012 12.6 +0.7 5.7 1 Dec 2011 60.0 108.2 v low 55%
Dartmoor 26.2   43.0 2 Jan 2012 12.6   4.7 6 Jan 2012 74.0
Hamilton Airport 27.2 +1.7 42.0 2 Jan 2012 11.5 +1.0 3.2 5 Dec 2011 69.2 107.8 low 64%
Mortlake Racecourse 26.8 +1.9 42.7 2 Jan 2012 11.0 +0.5 1.6 5 Dec 2011 36.0 115.4 lowest 31%
Port Fairy AWS 23.0 +0.9 42.6 2 Jan 2012 14.9 +1.3 10.3 1 Dec 2011 95.0 107.3 average 89%
Portland (Cashmore Airport) 22.7 +1.3 40.4 2 Jan 2012 13.1 +1.3 5.0 6 Jan 2012 77.4 115.7 low 67%
Portland NTC AWS 20.6   39.5 2 Jan 2012 15.4   10.5 11 Jan 2012
Warrnambool Airport NDB 25.0 +1.3 42.7 2 Jan 2012 12.0 +0.7 4.5 6 Jan 2012 65.6 120.2 v low 55%

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 11 am on Thursday 1 March 2012. 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
Enquiries