Victoria in January 2012: Warm and humid. Mostly near normal rainfall.

    Please note that this is a preliminary summary based upon early data.

    Key points:

  • January 2012 was a warm and humid month, with mostly near normal rainfall.
  • Exceptions were the northeast of the State, where rainfall was slightly above normal, and the southwest of the State, where rainfall was slightly below normal.
  • The warmth and humidity arose because of the high frequency of easterly synoptic types, and this is typical of what usually happens in summer during La Nina events - we are presently in the latter stages of a weakening La Nina event.
  • An exceptional 'cold outbreak', earlier in the month, was associated with some snowfalls on the higher peaks of the eastern ranges.

Rainfall

Summary: Rainfall was close to normal at most places but was generally above normal across the northern plains, and over a few parts of the exposed coast. It was drier than usual in the southwest of the State and also in inland parts of Gippsland.

Some sites had their highest total January rainfall on record.

Some sites had their highest total January rainfall for at least 10 years.

Some sites had their lowest total January rainfall on record.

Some sites had their lowest total January rainfall for at least 10 years.

There is a map of total rainfall below.

There is a map of rainfall deciles below.

Temperature

Maximum temperature

Summary: Maximum temperatures were well above normal throughout - by more than 2 degrees in the southwest, and by about 1 degree in most other districts.

Some sites had their coldest January day (lowest maximum temperature) on record.

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

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

Some sites had their lowest January mean daily maximum temperature for at least 10 years.

There is a map of mean maximum temperatures below.

There is a map of maximum temperature anomalies below.

Minimum temperature

Summary: As with maximum temperatures, minimum temperatures were also well above normal throughout - by about 1.5 degrees in the southwest, and by between half and one degree in most other districts.

Some sites had their warmest January night (highest daily minimum temperature) on record.

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

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

There is a map of mean minimum temperatures below.

There is a map of minimum temperature anomalies below.

Further information

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Extremes in January 2012
Hottest day 43.0 C at Dartmoor on the 2nd
Warmest days on average 32.9 C at Swan Hill Aerodrome
Coolest days on average 15.1 C at Mount Hotham
Coldest day 0.6 C at Mount Hotham on the 11th
Coldest night -3.1 C at Mount Hotham on the 12th
Coolest nights on average 6.8 C at Mount Hotham
Warmest nights on average 17.8 C at Mildura Airport
Warmest night 26.0 C at Ouyen (Post Office) on the 18th
Warmest on average overall 25.3 C at Mildura Airport
Coolest on average overall 11.0 C at Mount Hotham
Wettest overall 236.4 mm at Falls Creek (Rocky Valley)
Highest wind gust 144 km/h at Mount Hotham on the 8th

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 January rainfall
Total rainfall
for January 2012 (mm)
Previous wettest
for January
Years of
record
Average for
January
Myrhee (Handcocks) 146.8 108.8 in 2008 12 45.0
Too Rour (Moroko Park) 84.8 73.0 in 2008 12 32.4

Highest total January rainfall for at least 10 years
Total rainfall
for January 2012 (mm)
Most recent January
at least this wet
Years since
wetter
Average for
January
Drouin Bowling Club 95.3 106.2 in 1995 17 61.7
Mount Hotham 179.8 197.8 in 1995 17 101.3
Falls Creek (Rocky Valley) 236.4 257.2 in 1996* 14 116.4
Point Hicks (Lighthouse) 88.2 91.4 in 2000 12 62.4
Wonthaggi 69.0 82.4 in 2002 10 48.5

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




Record lowest total January rainfall
Total rainfall
for January 2012 (mm)
Previous driest
for January
Years of
record
Average for
January
Combienbar AWS 9.6 21.8 in 2009 18 68.8
Boonah 7.4 9.0 in 2009 12 61.1

Lowest total January rainfall for at least 10 years
Total rainfall
for January 2012 (mm)
Most recent January
at least this dry
Years since
drier
Average for
January
Swifts Creek 7.8 4.3 in 1965* 46 53.6

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




Record lowest January daily maximum temperature
Lowest daily maximum
temperature
in January 2012 (C)
Previous coolest
for January
Years of
record
Average for
January
Mount Buller 0.9 on the 11th 3.0 on the 8th in 1994 25 17.1
Wangaratta Aero 19.0 on the 11th 19.3 on the 8th in 1990 25 31.8
Beechworth Woolshed 18.7 on the 11th = 18.7 on the 25th in 1996 22 30.7
Mount Hotham 0.6 on the 11th 1.9 on the 9th in 1994 21 16.2
Albury Airport AWS 19.5 on the 11th 20.1 on the 25th in 1996 19 32.0
Mount Moornapa 13.4 on the 11th 13.5 on the 3rd in 1996 19 25.3
Eildon Fire Tower 11.5 on the 11th 13.7 on the 2nd in 2002 16 27.2
Mount Baw Baw 1.0 on the 11th 2.7 on the 18th in 2010 14 17.6
Viewbank (ARPANSA) 17.9 on the 11th 18.0 on the 27th in 2007 13 27.6
Dinner Plain (Mount Hotham Airport) 8.7 on the 11th 10.2 on the 18th in 2010 12 22.9



Record highest January mean daily maximum temperature
Mean daily maximum
temperature
for January 2012 (C)
Previous warmest
for January
Years of
record
Average for
January
Aireys Inlet 24.6 24.5 in 2001 20 22.5
Port Fairy AWS 24.9 24.6 in 2001 20 22.4
Cape Nelson Lighthouse 23.0 = 23.0 in 2001 16 21.0

Highest January mean daily maximum temperature for at least 10 years
Mean daily maximum
temperature
for January 2012 (C)
Most recent January
at least this warm
Years since
warmer
Average for
January
Mortlake Racecourse 28.1 28.4 in 2001 11 25.5
Portland (Cashmore Airport) 24.0 24.2 in 2001 11 21.7
Warrnambool Airport NDB 26.5 27.0 in 2001 11 24.2
Cape Otway Lighthouse 22.7 23.4 in 2001* 10 21.4

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




Lowest January mean daily maximum temperature for at least 10 years
Mean daily maximum
temperature
for January 2012 (C)
Most recent January
at least this cool
Years since
cooler
Average for
January
Dinner Plain (Mount Hotham Airport) 21.1 20.1 in 2002 10 22.9



Record highest January daily minimum temperature
Highest daily minimum
temperature
in January 2012 (C)
Previous warmest
for January
Years of
record
Average for
January
Point Hicks (Lighthouse) 23.8 on the 3rd 23.6 on the 12th in 1982 42 15.8



Record highest January mean daily minimum temperature
Mean daily minimum
temperature
for January 2012 (C)
Previous warmest
for January
Years of
record
Average for
January
Port Fairy AWS 15.4 15.3 in 2001 20 13.9

Highest January mean daily minimum temperature for at least 10 years
Mean daily minimum
temperature
for January 2012 (C)
Most recent January
at least this warm
Years since
warmer
Average for
January
Ararat Prison 13.7 14.3 in 2001 11 11.1
Cape Nelson Lighthouse 15.4 15.6 in 2001 11 14.5
Cerberus 15.2 15.6 in 2001 11 13.7
Portland (Cashmore Airport) 13.7 13.9 in 2001 11 12.1
Stawell Aerodrome 14.9 15.3 in 2001 11 13.4
Cape Otway Lighthouse 15.0 15.3 in 2001* 10 13.3
Wonthaggi 14.7 15.2 in 2001* 10 12.9

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




Summary statistics for January 2012
Maximum temperatures
for January
(C)
Minimum temperatures
for January
(C)
Rainfall
for January
(millimetres)
Mean for
January
2012
Diff
from
average
Highest for
January
2012
Mean for
January
2012
Diff
from
average
Lowest for
January
2012
Total for
January
2012
Average
for
January
Rank of
January
2012
Fraction of
January
average
Southwest Slopes (South) (district 72)
Albury Airport AWS 31.6 -0.4 38.9 3rd 16.1 -0.3 6.2 12th 47.6 34.4 average 138%
Hume Reservoir 31.3 +0.6 37.7 3rd 17.1 +0.7 7.0 12th 55.0 45.5 average 121%
North Mallee (district 76)
Mildura Airport 32.7 +0.5 40.4 2nd 17.8 +1.2 9.6 12th 12.6 22.1 average 57%
Ouyen (Post Office) 32.7 +0.4 41.3 2nd 17.5 +2.1 8.5 12th 7.6 21.3 average 36%
Walpeup Research 32.8 +1.0 41.1 2nd 16.8 +1.6 6.8 12th 11.2 22.4 average 50%
South Mallee (district 77)
Hopetoun Airport 32.5   41.8 2nd 15.9   7.5 12th 21.8
Swan Hill Aerodrome 32.9 0.0 41.2 3rd 17.0 +1.1 8.8 12th 25.6 30.6 average 84%
North Wimmera (district 78)
Nhill Aerodrome 31.6   42.6 2nd 15.1   7.0 12th 11.0
Warracknabeal Museum 31.3 +0.6 40.9 2nd 15.7 +1.7 7.0 12th 4.4 27.0 low 16%
South Wimmera (district 79)
Edenhope Airport 30.3   42.6 2nd 14.4   6.1 5th 6.4
Grampians (Mount William) 20.3   32.1 2nd 9.7   2.5 12th 55.8
Horsham Aerodrome 31.2 +0.3 42.0 2nd 13.6 +1.2 5.4 15th 8.6 30.6 low 28%
Horsham Polkemmet Rd 31.3 +1.5 42.9 2nd 14.1 +1.0 5.5 12th 10.4 23.8 average 44%
Kanagulk 30.3   42.5 2nd 14.0   7.2 6th 14.0
Longerenong 30.9 +1.0 41.6 2nd 14.4 +1.5 4.9 12th 6.6 24.9 low 27%
Pyrenees (Ben Nevis) 24.1   35.4 2nd 12.5   3.9 12th 35.8
Stawell Aerodrome 28.9 -0.2 40.5 2nd 14.9 +1.5 8.9 12th 18.6 39.2 low 47%
Lower North (district 80)
Charlton 32.1   41.1 2nd 16.2   6.8 12th 17.0
Kerang 32.3 +0.8 40.7 3rd 16.8 +1.7 9.1 12th 30.2 23.9 high 126%
Kyabram DPI 31.5 +1.5 41.9 3rd 15.6 +1.3 7.0 12th 49.6 33.9 high 146%
Upper North (district 81)
Bendigo Airport 30.1 +0.5 39.0 2nd 15.0 +1.0 7.0 12th 14.0 35.9 low 39%
Shepparton Airport 31.3 -0.5 40.7 3rd 15.6 +0.5 8.4 12th 56.4 27.5 high 205%
Tatura Inst Sustainable Ag 30.2 +0.7 40.2 3rd 15.6 +1.5 8.7 12th 59.8 33.8 high 177%
Yarrawonga 32.2 -0.3 40.3 3rd 16.0 +0.3 7.1 12th 45.8 31.4 high 146%
Lower Northeast (district 82)
Beechworth Woolshed 29.7 -1.0 37.0 3rd 13.8 +0.4 5.4 12th 69.4 49.3 high 141%
Benalla Airport 31.2   40.0 3rd 15.2   7.1 12th 62.8
Corryong Airport 30.9   36.0 20th 12.7   4.3 12th 69.0
Dartmouth Reservoir 29.5 +0.3 35.7 3rd 14.7 +1.0 4.0 12th 66.6 61.7 average 108%
Hunters Hill 25.6 -0.2 31.2 26th 13.3 -0.9 3.4 12th 96.2 62.1 high 155%
Rutherglen Research 31.5 +0.2 39.7 3rd 14.1 +0.4 5.3 12th 54.6 36.5 high 150%
Strathbogie 27.2 0.0 36.0 3rd 12.1 +0.5 5.8 12th 106.6 48.0 v high 222%
Wangaratta Aero 31.6 -0.2 39.6 3rd 13.9 -0.2 7.6 12th 56.4 41.5 average 136%
Upper Northeast (district 83)
Dinner Plain (Mount Hotham Airport) 21.1 -1.8 27.2 29th 8.3 -0.4 -0.5 13th 29.6 48.4 low 61%
Edi Upper 30.1 +0.2 37.8 4th 13.4 -0.6 4.8 12th 94.4 62.4 high 151%
Falls Creek 17.3 -0.3 22.3 28th 7.8 -0.8 -2.0 12th 137.8 108.7 average 127%
Mount Buller 16.4 -0.7 23.3 3rd 8.1 -0.6 -1.4 12th 150.2 75.2 high 200%
Mount Hotham 15.1 -1.1 21.5 3rd 6.8 -1.1 -3.1 12th 179.8 101.3 high 177%
Omeo 26.1   33.5 3rd 10.4   3.0 13th 26.6
East Gippsland (district 84)
Combienbar AWS 25.4 0.0 35.1 3rd 13.9 +0.4 6.3 12th 9.6 68.8 lowest 14%
Gabo Island Lighthouse 21.9 +0.7 25.6 18th 16.8 +1.1 10.5 12th 43.6 70.1 average 62%
Gelantipy 23.7 -0.2 31.9 29th 11.9 +0.3 4.5 12th 38.0 60.9 low 62%
Lakes Entrance (Eastern Beach Road) 24.1   34.1 3rd 15.3   8.5 12th 42.4
Mallacoota 24.4 +0.3 31.6 3rd 15.9 +0.4 9.9 12th 40.8 62.4 average 65%
Mount Nowa Nowa 25.0 +0.3 38.0 3rd 15.1 +0.9 7.7 12th 44.2 57.4 average 77%
Orbost 25.8 -0.7 37.4 3rd 15.1 +0.4 9.3 15th 36.4 39.2 average 93%
Point Hicks (Lighthouse) 24.9 +1.1 32.7 17th 16.1 +0.3 10.5 14th 88.2 62.4 high 141%
West Gippsland (district 85)
Bairnsdale Airport 26.8 +1.0 39.1 3rd 13.1 +0.3 7.8 15th 35.2 48.9 average 72%
East Sale Airport 26.1 +0.7 37.5 3rd 14.0 +1.2 8.7 5th 38.6 45.3 average 85%
Morwell (Latrobe Valley Airport) 26.7 +0.3 37.9 2nd 13.6 +1.0 6.6 5th 46.2 49.0 average 94%
Mount Baw Baw 15.4 -2.2 24.7 3rd 7.7 -1.0 -1.0 12th 117.0 94.7 high 124%
Mount Moornapa 25.3 0.0 37.3 3rd 13.9 +0.7 7.1 12th 34.2 60.7 low 56%
Noojee (Slivar) 25.3 +0.2 34.6 3rd 12.5 +1.2 7.8 6th 50.4 66.7 low 76%
Pound Creek 24.9   37.5 2nd 13.4   8.8 7th 79.6
Willow Grove (Blue Rock Reservoir) 25.2 -1.1 33.6 3rd 13.0 -0.1 7.9 12th 50.2 52.3 average 96%
Yarram Airport 25.1   33.6 17th 13.3   6.3 15th 59.4
East Central (district 86)
Bundoora (Latrobe University) 27.0 +0.5 38.9 2nd 15.3 +1.2 9.9 6th 32.4 47.8 low 68%
Cerberus 24.9 +0.7 39.5 2nd 15.2 +1.5 9.2 5th 39.4 39.1 average 101%
Coldstream 27.2 -0.5 36.5 2nd 12.6 +0.9 5.3 12th 34.6 45.7 low 76%
Coldstream Comparison 27.2   36.4 2nd 12.4   5.1 12th 34.6
Cranbourne Botanic Gardens 25.7 +0.5 38.4 2nd 14.4 +0.9 8.4 5th 47.8 54.9 average 87%
Essendon Airport 27.1 +0.8 39.0 2nd 15.5 +2.2 10.4 6th 19.8 43.3 low 46%
Ferny Creek 23.2   33.6 2nd 13.5   6.0 12th 75.6
Frankston AWS 25.2 +0.6 36.1 2nd 16.3 +0.9 9.7 12th
Melbourne Airport 27.4 +1.1 39.2 2nd 14.8 +1.1 9.5 12th 10.0 41.8 low 24%
Melbourne Regional Office 27.4 +1.5 40.0 2nd 17.3 +3.0 12.5 12th 29.0 47.6 average 61%
Moorabbin Airport 26.4 +0.8 39.7 2nd 15.3 +1.2 8.7 12th 32.2 45.2 average 71%
Phillip Island Penguin Reserve 24.2 +0.5 38.6 2nd 15.4 +1.7 10.5 24th 46.6 33.1 high 141%
Rhyll 24.2 +0.6 34.9 2nd 16.4 +1.2 10.4 11th 51.0 38.7 high 132%
Scoresby Research Institute 26.9 +0.8 38.1 2nd 14.5 +1.3 8.1 6th 56.2 53.5 average 105%
Viewbank (ARPANSA) 27.7 +0.1 38.8 2nd 15.0 +0.7 8.9 12th 44.0 43.5 average 101%
Wallan (Kilmore Gap) 24.2 -0.4 34.2 2nd 12.9 +0.7 6.7 12th 26.2 50.5 low 52%
Wonthaggi 24.8 +1.0 37.9 2nd 14.7 +1.8 10.2 11th 69.0 48.5 high 142%
West Central (district 87)
Avalon Airport 26.8 +0.7 41.1 2nd 14.7 +0.7 9.5 6th 19.6 31.5 average 62%
Breakwater (Geelong Racecourse) 26.0   41.8 2nd 15.1   9.5 5th 32.6
Laverton RAAF 26.4 +0.8 39.5 2nd 15.1 +1.4 10.4 9th 22.6 39.8 average 57%
Sheoaks 26.7 +1.2 39.7 2nd 13.0 +0.8 5.5 6th 14.0 36.3 v low 39%
North Central (district 88)
Castlemaine Prison 28.1 0.0 38.2 2nd 14.2 +1.2 6.4 6th 53.8 41.6 high 129%
Eildon Fire Tower 26.5 -0.7 35.5 3rd 13.6 +0.2 5.2 12th 35.6 38.7 average 92%
Lake Eildon 29.5 +0.8 38.0 3rd 13.6 +1.0 6.0 12th 39.0 46.9 average 83%
Mangalore Airport 30.2 +0.6 40.4 3rd 14.9 +0.7 7.9 9th 35.8 40.0 average 90%
Maryborough 29.2 +0.5 39.7 2nd 14.4 +1.5 6.3 12th 16.8 31.3 average 54%
Redesdale 30.0 +1.0 39.2 2nd 13.8 +0.8 4.7 12th 38.2 33.9 average 113%
Western Plains (district 89)
Ararat Prison 28.3 +1.6 39.8 2nd 13.7 +2.6 5.8 6th 18.8 40.7 low 46%
Ballarat Aerodrome 26.6 +1.5 37.4 2nd 12.5 +1.7 5.6 6th 22.2 39.6 average 56%
Westmere 28.5   41.4 2nd 12.4   4.7 6th 17.2
West Coast (district 90)
Aireys Inlet 24.6 +2.1 41.9 2nd 15.0 +1.1 9.9 11th 21.0 40.1 low 52%
Cape Nelson Lighthouse 23.0 +2.0 40.2 2nd 15.4 +0.9 11.3 11th 24.8 36.9 average 67%
Cape Otway Lighthouse 22.7 +1.3 37.8 2nd 15.0 +1.7 10.4 11th 39.4 44.3 average 89%
Casterton 28.4   40.8 2nd 13.6   3.9 6th 14.2
Colac (Mount Gellibrand) 25.9 +0.5 40.8 2nd 13.1 +0.7 8.1 5th 21.6 37.9 average 57%
Dartmoor 27.8   43.0 2nd 13.5   4.7 6th 22.6
Hamilton Airport 28.6 +2.4 42.0 2nd 12.7 +1.8 4.2 5th 18.2 35.0 average 52%
Mortlake Racecourse 28.1 +2.6 42.7 2nd 12.0 +1.3 2.3 5th 17.0 35.5 low 48%
Port Fairy AWS 24.9 +2.5 42.6 2nd 15.4 +1.5 10.6 6th 22.2 33.4 average 66%
Portland (Cashmore Airport) 24.0 +2.3 40.4 2nd 13.7 +1.6 5.0 6th 37.2 37.6 average 99%
Portland NTC AWS 22.0   39.5 2nd 15.7   10.5 11th
Warrnambool Airport NDB 26.5 +2.3 42.7 2nd 13.0 +1.5 4.5 6th 15.0 36.4 low 41%
Weeaproinah 21.2 +1.4 36.6 2nd 12.1 +1.3 5.9 5th 135.8 87.8 high 155%

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 11 am on Wednesday 1 February 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