Victoria in December 2019: cool start then the hottest day on record; very dry in the east and much of the south

The first part of the month was relatively cool, but the 20th brought record high temperatures to most of Victoria, including a December State record of 47.9 °C at Hopetoun Airport and Horsham Aerodrome. Large areas of the State were much drier than usual.

Third-driest December on record

  • Below to very much below average rainfall was recorded across most of Victoria
  • The statewide average rainfall total was 78% below the December average of 48 mm; it was the third-lowest December rainfall total on record, and the lowest since 1972
  • Eastern and most of western Victoria received very little rain, with large areas receiving less than 10 mm of rainfall for the whole month
  • The highest monthly total of 58.6 mm was recorded at Balook, east of Melbourne
  • Some sites had their lowest total December rainfall on record or their lowest total December rainfall for at least 20 years

A cool start, then record heat

  • Mean maximum temperatures for December were much warmer than average across most of Victoria, while in the north they were highest on record
  • Some sites in the State's north had their highest December mean daily maximum temperature on record
  • Statewide, mean maximum temperature was 3.13 °C warmer than December average, the second-warmest December on record, about 0.5 °C cooler than the highest recorded in 2015
  • The month started off cool, with some sites having their coldest December day (lowest maximum temperature) on record on the 1st and 2nd
  • The 20th and the 30th were exceptionally hot throughout Victoria, and many sites had their highest December temperature on record
  • Hopetoun Airport and Horsham Aerodrome reached 47.9 °C on the 20th, the highest December temperature ever reported in Victoria, exceeding by more than one degree the previous December record of 46.6 °C set at Robinvale on 31 December 1976
  • All of Victoria recorded accumulated Forest Fire Danger Index values for December in the highest 10% of historical records, and highest on record for December over the north and northwest of the State and in East Gippsland
  • Gippsland experienced the highest daily values of the Forest Fire Danger Index for December over 30 and 31 December
  • The hot days were followed by warmest December nights (highest daily minimum temperature) on record at some sites
  • The Victorian mean temperature was 2.22 °C warmer than average, the third-warmest on record for December, while the State's mean minimum temperature was 1.31 °C above average

Smoke, fires and Pyro-cumulonimbus

  • In addition to fires still burning from earlier ignitions, a number of significant new fires commenced in East Gippsland during December
  • Widespread areas of smoke extended across eastern and southern Victoria on the 23rd, from fires burning in NSW, Gippsland and southwest Victoria, and persisted over several days
  • Some fires were so big that they created their own storms; a Pyro-cumulonimbus cloud formed over firegrounds in the East Gippsland area on the 30th, generating lightning
  • During December, fires burnt more than 230 000 hectares in East Gippsland, while across Victoria, fire damaged 400 000 hectares
  • Thousands of properties in East Gippsland and northeast Victoria lost electricity due to fires

Further information

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Extremes in December 2019
Hottest day 47.9 °C at Hopetoun Airport on the 20th
47.9 °C at Horsham Aerodrome on the 20th
Warmest days on average 34.7 °C at Mildura Airport
Coolest days on average 17.1 °C at Mount Hotham
Coldest day -0.7 °C at Mount Hotham on the 2nd
Coldest night -3.1 °C at Mount Hotham on the 3rd
Coolest nights on average 8.1 °C at Mount Hotham
Warmest nights on average 16.8 °C at Mildura Airport
Warmest night 27.8 °C at Mildura Airport on the 20th
27.8 °C at Ouyen (Post Office) on the 30th
Warmest on average overall 25.7 °C at Mildura Airport
Coolest on average overall 12.6 °C at Mount Hotham
Wettest overall 58.6 mm at Balook
Wettest day 50.4 mm at Edi Upper (Black Range Trout Farm) on the 2nd
Strongest wind gust 137 km/h at Wilsons Promontory Lighthouse on the 3rd

Maps
ObservedAnomalyDecile rank
Total
rainfall
Map of Rainfall totals Map of Percentage of normal rainfall Map of Rainfall deciles
Mean
daily
maximum
temperatures
Map of Mean maximum temperature Map of Anomaly in mean maximum temperature Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature Map of Anomaly in mean minimum temperature Map of Decile rank of mean minimum temperature

Click on a map to show it full size in a pop-up window


Record lowest December total rainfall
New record
(mm)
Old
record
Years of
record
Average for
December
Bairnsdale Airport 6.6 18.8 in 2006 40 59.6
Wallan 5.6 8.4 in 1997 38 58.1
Upper Plenty 5.8 6.8 in 1997 34 64.8
Ringwood North 10.4 17.4 in 1994 27 79.7
Aireys Inlet 8.8 13.8 in 1997 26 38.9
Coldstream 11.6 14.0 in 1997 26 59.7
Murderers Hill 10.8 15.4 in 1993 25 70.1
Mount Nowa Nowa 7.8 21.6 in 2006 24 79.5
Shepparton Airport 3.4 4.0 in 1997 24 33.1
Stawell Aerodrome 1.8 4.0 in 1997 24 34.8
Viewbank 11.4 20.8 in 2002 21 69.4
Mitchell River @ Glenaladale 2.4 8.4 in 2000 20 65.1
Traralgon EPA 23.6 = 23.6 in 2015 20 55.6

Lowest December total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
December
Ballan 9.2 0.8 in 1972 54.3
Erica (Parkers Corner) 20.4 12.3 in 1972 104.6
Gabo Island Lighthouse 6.6 6.1 in 1972 66.7
Meredith (Darra) 4.8 2.4 in 1972 52.1
Macarthur (Post Office) 10.2 3.3 in 1972* 49.0
Point Hicks (Lighthouse) 10.0 4.0 in 1972* 72.0
Darriman (Tarralangi) 7.2 4.6 in 1972* 62.4
Scoresby Research Institute 7.6 3.7 in 1972* 75.4
East Sale 7.8 5.4 in 1977 54.0
Wilsons Promontory Lighthouse 20.2 =20.2 in 1977 64.1
Rockbank (Melton) 5.8 5.7 in 1979 44.6
Mallacoota 11.2 7.0 in 1979* 71.1
Stratford 7.1 5.6 in 1977* 61.0
Essendon Airport 6.4 1.3 in 1972* 51.9
Woodend 10.0 7.7 in 1994* 54.6
Ballarat Aerodrome 5.4 =5.4 in 1997 50.1
Cerberus 19.0 5.6 in 1997 53.9
Hamilton Airport 10.4 6.8 in 1997 43.3
Heathcote 4.0 0.0 in 1997 36.4
Horsham Aerodrome 4.2 3.0 in 1997 24.6
Jindivick 25.4 24.6 in 1997 97.3
Kinglake West 14.8 13.5 in 1997 85.7
Lancefield 10.2 1.2 in 1997 48.8
Laverton RAAF 6.2 3.2 in 1997 46.2
Mangalore Airport 3.0 =3.0 in 1997 40.8
Maryborough 6.8 4.8 in 1997 37.1
Melbourne Airport 8.0 6.0 in 1997 51.0
Moorabbin Airport 14.6 4.2 in 1997 60.3
Dunolly 8.2 2.8 in 1997* 32.9
Eltham 19.4 16.0 in 1994* 65.7
Korong Vale (Burnbank) 4.0 1.6 in 1997* 25.2
Marysville (Post Office) 25.2 4.4 in 1994* 88.5
Mirboo North Water Board 34.6 25.0 in 1997* 75.0
Ocean Grove 12.4 6.6 in 1997* 35.4
Raywood 3.2 0.8 in 1997* 29.0
Mansfield (Post Office) 7.2 =7.2 in 1997* 51.9
Mooroopna 4.8 2.0 in 1995* 34.7
Oakleigh (Metropolitan Golf Club) 11.0 6.0 in 1997* 61.5
Springvale (Sandown) 11.2 5.2 in 1997* 70.9

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




Record highest December temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Cape Otway Lighthouse 43.4 on the 20th 40.6 on the 31st in 1897 155 19.9
Wilsons Promontory Lighthouse 40.2 on the 30th 38.3 on the 24th in 1920 110 18.9
Kerang 46.6 on the 20th 45.0 on the 31st in 2005 106 29.8
Laverton RAAF 45.2 on the 20th 44.3 on the 31st in 2005 77 23.9
East Sale 42.1 on the 30th 40.8 on the 20th in 1953 75 23.5
Mildura Airport 46.8 on the 20th 45.1 on the 31st in 2005 74 30.3
Ballarat Aerodrome 43.5 on the 20th 40.6 on the 19th in 2015 63 22.7
Echuca Aerodrome 46.3 on the 20th 44.6 on the 31st in 2005 63 29.0
Ouyen (Post Office) 47.3 on the 20th 45.2 on the 31st in 2005 63 30.3
Mangalore Airport 44.0 on the 20th 42.6 on the 20th in 2013 59 27.2
Longerenong 46.8 on the 20th 45.6 on the 31st in 2005 55 27.8
Maryborough 43.9 on the 20th 43.7 on the 31st in 2005 55 26.7
Tatura Inst Sustainable Ag 44.0 on the 20th 42.1 on the 31st in 2005 55 27.6
Kyabram 45.3 on the 20th 43.3 on the 27th in 2018 53 28.3
Castlemaine Prison 43.0 on the 20th 42.0 on the 31st in 2005 52 25.6
Scoresby Research Institute 41.8 on the 20th 41.5 on the 19th in 2015 52 24.1
Walpeup Research 47.7 on the 20th 45.9 on the 31st in 2005 52 29.9
Ararat Prison 43.3 on the 20th 42.5 on the 31st in 2005 51 24.8
Essendon Airport 44.4 on the 20th 44.0 on the 31st in 2005 50 24.6
Lake Eildon 40.9 on the 20th 40.4 on the 31st in 2005 50 26.5
Melbourne Airport 44.6 on the 20th 43.8 on the 31st in 2005 50 24.6
Moorabbin Airport 44.2 on the 20th 43.0 on the 31st in 2005 49 24.0
Strathbogie 39.1 on the 20th 38.4 on the 31st in 2005 41 24.8
Dartmouth Reservoir 39.2 on the 30th 38.5 on the 31st in 2005 40 26.9
Bairnsdale Airport 43.6 on the 30th 41.6 on the 20th in 2015 39 23.8
Portland (Cashmore Airport) 43.6 on the 20th 40.9 on the 31st in 2007 38 20.3
Hamilton Airport 45.0 on the 20th 43.3 on the 31st in 2005 37 24.2
Edi Upper 40.8 on the 30th 39.5 on the 20th in 2015 34 27.5
Wangaratta Aero 43.1 on the 30th 42.2 on the 20th in 2015 33 29.2
Mount Buller 27.7 on the 20th 27.3 on the 21st in 1999 32 14.7
Aireys Inlet 44.7 on the 20th 43.0 on the 19th in 2015 29 21.4
Bendigo Airport 44.8 on the 20th 43.1 on the 31st in 2005 29 27.5
Falls Creek 26.6 on the 20th 25.1 on the 31st in 2005 29 15.2
Mortlake Racecourse 44.0 on the 20th 43.4 on the 19th in 2015 29 23.6
Mount Hotham 26.3 on the 30th 24.4 on the 31st in 2005 29 13.9
Port Fairy AWS 45.2 on the 20th 42.3 on the 31st in 2007 29 21.3
Cranbourne Botanic Gardens 41.8 on the 20th = 41.8 on the 19th in 2015 28 23.6
Hunters Hill 36.0 on the 30th 34.5 on the 17th in 2002 27 22.9
Mount Moornapa 42.1 on the 30th 40.5 on the 19th in 2015 27 23.2
Redesdale 44.5 on the 20th 42.9 on the 31st in 2005 27 27.0
Wallan (Kilmore Gap) 40.7 on the 20th 40.0 on the 19th in 2015 27 22.4
Yarrawonga 44.3 on the 20th 43.2 on the 27th in 2018 27 30.2
Combienbar AWS 40.5 on the 30th 39.5 on the 31st in 2005 26 23.3
Avalon Airport 45.8 on the 20th 45.0 on the 19th in 2015 25 24.5
Cape Nelson Lighthouse 45.1 on the 20th 41.8 on the 31st in 2007 25 19.9
Eildon Fire Tower 38.5 on the 20th 37.5 on the 31st in 2005 24 24.0
Shepparton Airport 44.9 on the 20th 43.2 on the 27th in 2018 24 29.1
Stawell Aerodrome 44.7 on the 20th 43.5 on the 31st in 2005 24 26.7
Swan Hill Aerodrome 46.9 on the 20th 45.8 on the 31st in 2005 24 30.6
Horsham Aerodrome 47.9 on the 20th 46.0 on the 31st in 2005 23 28.7
Warrnambool Airport NDB 44.2 on the 20th 43.0 on the 19th in 2015 22 22.7
Viewbank 43.6 on the 20th 43.0 on the 31st in 2005 21 25.8
Colac (Mount Gellibrand) 43.8 on the 20th 42.6 on the 19th in 2015 20 23.5
Orbost 43.1 on the 30th 41.3 on the 20th in 2015 20 24.2



Record lowest December daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Tatura Inst Sustainable Ag 13.2 on the 1st 14.2 on the 1st in 1969 55 27.6
Kyabram 13.6 on the 1st 14.4 on the 1st in 1969 53 28.3
Strathbogie 9.7 on the 1st 12.2 on the 27th in 1993 41 24.8
Wangaratta Aero 13.5 on the 1st 15.0 on the 27th in 1993 33 29.2
Bendigo Airport 14.0 on the 1st 14.1 on the 27th in 1993 29 27.5
Mount Hotham -0.7 on the 2nd 0.0 on the 5th in 2013 29 13.9
Yarrawonga 14.3 on the 1st 16.7 on the 27th in 1993 27 30.2
Eildon Fire Tower 8.9 on the 1st 9.2 on the 27th in 1998 24 24.0
Shepparton Airport 13.7 on the 1st 17.7 on the 5th in 2013 24 29.1



Record highest December mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Ouyen (Post Office) 34.3 = 34.3 in 2015 82 30.3
Mildura Airport 34.7 34.6 in 2015 73 30.3
Walpeup Research 34.1 33.9 in 2015 69 29.9
Dartmouth Reservoir 30.1 29.4 in 1994 39 26.9
Wangaratta Aero 32.7 32.5 in 1994 32 29.2
Yarrawonga 33.1 32.8 in 2018 26 30.2
Shepparton Airport 31.9 31.8 in 2018 23 29.1
Swan Hill Aerodrome 33.8 33.6 in 2015 23 30.6



Record highest December daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Dartmouth Reservoir 23.2 on the 31st 21.6 on the 21st in 1994 40 11.8
Edi Upper 26.2 on the 31st 24.0 on the 29th in 2018 34 11.6
Mount Buller 19.1 on the 21st 19.0 on the 21st in 1994 33 6.4
Falls Creek 19.1 on the 21st 18.0 on the 28th in 2018 29 6.4
Mount Hotham 18.4 on the 31st 17.0 on the 22nd in 2002 29 5.8
Gelantipy 21.3 on the 21st 20.9 on the 22nd in 2000 28 9.7
Hunters Hill 26.1 on the 31st 24.1 on the 21st in 1994 27 12.0
Eildon Fire Tower 25.8 on the 30th 24.9 on the 20th in 2015 24 11.5
Mount Baw Baw 19.8 on the 30th 18.9 on the 12th in 1998 21 6.0



Summary statistics for December 2019
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
December
2019
Diff
from
average
Highest for
December
2019
Mean for
December
2019
Diff
from
average
Lowest for
December
2019
Total for
December
2019
Average
for
December
Rank of
December
2019
Fraction of
December
average
North Mallee (district 76)
Mildura Airport 34.7 +4.4 46.8 20th 16.8 +1.9 8.8 1st 2.6 25.2 low 10%
Ouyen (Post Office) 34.3 +4.0 47.3 20th 15.2 +1.4 8.1 7th 6.2 25.4 low 24%
Walpeup Research 34.1 +4.2 47.7 20th 14.6 +1.0 5.7 7th 3.6 24.3 low 15%
South Mallee (district 77)
Hopetoun Airport 33.5 +2.9 47.9 20th 13.4 +0.2 6.3 7th 7.0 31.5 low 22%
Swan Hill Aerodrome 33.8 +3.2 46.9 20th 14.3 +0.5 7.5 7th 5.6 22.2 low 25%
North Wimmera (district 78)
Kellalac (Warracknabeal Airport) 32.3   46.9 20th 12.6   5.6 7th 3.6
Nhill Aerodrome 31.7 +2.7 47.1 20th 12.5 +0.2 5.7 7th 4.2 28.2 v low 15%
South Wimmera (district 79)
Edenhope Airport 29.4 +2.4 46.5 20th 11.8 +0.6 3.8 7th 3.4 39.3 v low 9%
Grampians (Mount William) 20.8 +2.4 36.1 20th 9.4 +1.5 -0.2 2nd 19.4 63.0 v low 31%
Horsham Aerodrome 31.8 +3.1 47.9 20th 11.2 +0.6 4.6 22nd 4.2 24.6 v low 17%
Kanagulk 29.7 +2.4 46.8 20th 11.1 +0.3 3.7 7th 5.2 39.9 v low 13%
Longerenong 31.2 +3.4 46.8 20th 11.9 +0.7 5.3 7th 3.4 27.4 v low 12%
Pyrenees (Ben Nevis) 24.8 +2.4 39.8 20th 10.9 +0.5 2.0 2nd 6.2 45.0 v low 14%
Stawell Aerodrome 29.3 +2.6 44.7 20th 11.5 0.0 5.5 8th 1.8 34.8 lowest 5%
Lower North (district 80)
Charlton 32.3 +2.3 45.5 20th 13.5 +0.3 7.4 7th 14.4 34.4 low 42%
Echuca Aerodrome 32.6 +3.6 46.3 20th 14.1 +0.6 7.3 7th 7.2 30.0 low 24%
Kerang 33.4 +3.6 46.6 20th 15.4 +1.9 8.9 3rd 5.6 27.2 low 21%
Kyabram 31.8 +3.5 45.3 20th 13.6 +1.0 7.4 3rd
Upper North (district 81)
Bendigo Airport 31.1 +3.6 44.8 20th 13.0 +1.0 6.0 7th 3.8 39.7 low 10%
Shepparton Airport 31.9 +2.8 44.9 20th 14.0 +1.0 8.7 2nd 3.4 33.1 lowest 10%
Tatura Inst Sustainable Ag 30.1 +2.5 44.0 20th 13.4 +1.0 7.4 4th 35.0
Yarrawonga 33.1 +2.9 44.3 20th 14.1 +0.6 8.7 7th 12.8 41.7 low 31%
Lower Northeast (district 82)
Benalla Airport 31.9 +2.7 43.2 20th 13.6 +0.2 3.2 1st 11.5 53.3 v low 22%
Dartmouth Reservoir 30.1 +3.2 39.2 30th 12.3 +0.5 4.2 1st 22.6 73.7 low 31%
Rutherglen Research 32.9 +3.6 43.6 30th 11.6 +0.1 2.2 1st 16.0 44.3 low 36%
Strathbogie 27.7 +2.9 39.1 20th 10.0 +0.5 2.5 1st 22.0 58.0 low 38%
Wangaratta Aero 32.7 +3.5 43.1 30th 12.5 +0.7 3.8 1st 11.8 46.0 low 26%
Upper Northeast (district 83)
Mount Buller 17.3 +2.6 27.7 20th 8.8 +2.4 -2.5 3rd 44.6 100.9 low 44%
Mount Hotham 17.1 +3.2 26.3 30th 8.1 +2.3 -3.1 3rd
Omeo 26.9 +2.6 38.7 20th 9.0 -0.2 2.4 1st 2.2 62.8 v low 4%
East Gippsland (district 84)
Combienbar AWS 25.6 +2.3 40.5 30th 12.2 +0.7 4.0 3rd 5.2 66.6 v low 8%
Gabo Island Lighthouse 20.6 +0.6 29.2 28th 14.3 -0.1 8.1 1st 6.6 66.7 v low 10%
Gelantipy 23.4 +1.9 35.7 20th 10.2 +0.5 3.4 1st 66.6
Lakes Entrance (Eastern Beach Road) 22.9 -0.2 42.4 30th 12.4 -1.0 7.8 1st 12.6 62.9 v low 20%
Mallacoota 23.9 +1.6 37.3 28th 13.8 0.0 6.4 1st 11.2 71.1 v low 16%
Mount Nowa Nowa 23.8 +1.0 37.7 30th 12.4 +0.1 6.4 1st 7.8 79.5 lowest 10%
Orbost 25.5 +1.3 43.1 30th 12.5 -0.6 6.4 1st
Point Hicks (Lighthouse) 22.1 -0.1 33.0 29th 14.0 -0.2 9.3 1st 10.0 72.0 v low 14%
West Gippsland (district 85)
Bairnsdale Airport 25.3 +1.5 43.6 30th 11.6 +0.3 6.8 1st 6.6 59.6 lowest 11%
Corner Inlet (Yanakie) 21.4   40.7 30th 11.8   6.9 20th 22.0
East Sale 25.0 +1.5 42.1 30th 12.5 +1.1 8.2 22nd 7.8 54.0 v low 14%
East Sale Airport 25.4   43.5 30th 12.7   8.2 22nd 8.4
Morwell (Latrobe Valley Airport) 25.8 +1.3 41.9 30th 11.6 +0.3 7.8 23rd 26.6 66.9 low 40%
Mount Moornapa 26.1 +2.9 42.1 30th 11.6 +0.1 5.8 2nd 5.8 62.9 v low 9%
Nilma North (Warragul) 24.1   39.2 30th 11.5   6.8 2nd 31.4
Pound Creek 22.3 -0.6 40.6 30th 11.2 -0.4 3.5 23rd 31.2 59.3 low 53%
Wilsons Promontory Lighthouse 20.1 +1.2 40.2 30th 12.9 +0.2 8.9 2nd 20.2 64.1 v low 32%
Yarram Airport 24.1 +0.4 44.0 30th 10.9 -0.6 3.3 23rd 11.0 56.0 v low 20%
East Central (district 86)
Cerberus 22.4 -0.1 41.8 30th 12.1 +0.1 7.9 17th 19.0 53.9 v low 35%
Coldstream 26.6 +1.3 41.2 29th 10.5 +0.6 5.9 23rd 11.6 59.7 lowest 19%
Essendon Airport 26.4 +1.8 44.4 20th 13.0 +1.0 8.8 3rd 6.4 51.9 v low 12%
Ferny Creek 22.6   37.7 29th 10.5   5.0 3rd 23.2
Melbourne (Olympic Park) 24.6   43.5 20th 14.0   9.8 2nd 6.2
Melbourne Airport 26.4 +1.8 44.6 20th 12.4 +0.3 7.4 7th 8.0 51.0 v low 16%
Moorabbin Airport 25.0 +1.0 44.2 20th 13.3 +0.5 9.1 23rd 14.6 60.3 v low 24%
Rhyll 22.5 +0.5 37.7 20th 13.3 -0.6 8.4 2nd 18.8 45.6 v low 41%
Scoresby Research Institute 26.2 +2.1 41.8 20th 12.2 +0.3 7.8 23rd 7.6 75.4 v low 10%
Viewbank 26.9 +1.1 43.6 20th 13.0 +0.2 9.1 2nd 11.4 69.4 lowest 16%
West Central (district 87)
Avalon Airport 25.9 +1.4 45.8 20th 12.4 +0.5 7.9 2nd 7.0 29.2 low 24%
Breakwater (Geelong Racecourse) 24.9   45.1 20th 12.4   8.2 2nd 8.6
Laverton RAAF 25.7 +1.8 45.2 20th 13.1 +1.0 7.6 7th 6.2 46.2 v low 13%
Sheoaks 25.1 +1.3 41.1 30th 10.8 +0.3 5.5 22nd 2.6 30.1 lowest 9%
North Central (district 88)
Castlemaine Prison 29.2 +3.6 43.0 20th 12.1 +1.1 4.5 7th 9.8 40.4 low 24%
Eildon Fire Tower 25.7 +1.7 38.5 20th 11.7 +0.2 4.3 3rd 23.4 51.1 average 46%
Lake Eildon 28.9 +2.4 40.9 20th 11.2 +0.1 5.5 7th 26.2 57.4 low 46%
Mangalore Airport 30.3 +3.1 44.0 20th 12.7 +0.7 5.1 5th 3.0 40.8 v low 7%
Maryborough 29.7 +3.0 43.9 20th 12.3 +0.9 7.0 7th 6.8 37.1 v low 18%
Puckapunyal Lyon Hill (Defence) 29.5   44.5 20th 13.4   8.4 1st 1.2
Puckapunyal West (Defence) 29.0   43.5 20th 12.4   5.2 7th 4.0
Redesdale 30.7 +3.7 44.5 20th 11.2 +0.9 3.8 7th 5.8 37.4 low 16%
Wallan (Kilmore Gap) 24.9 +2.5 40.7 20th 10.5 +0.1 5.4 2nd 9.4 47.1 v low 20%
Western Plains (district 89)
Ballarat Aerodrome 25.1 +2.4 43.5 20th 10.1 +0.6 4.3 5th 5.4 50.1 v low 11%
Westmere 27.7 +1.8 45.2 20th 9.0 -0.4 2.4 8th 7.0 41.6 v low 17%
West Coast (district 90)
Aireys Inlet 23.8 +2.4 44.7 20th 11.8 -0.6 6.9 2nd 8.8 38.9 lowest 23%
Cape Nelson Lighthouse 20.7 +0.8 45.1 20th 12.9 -0.3 8.4 2nd 16.6 38.9 low 43%
Cape Otway Lighthouse 20.7 +0.8 43.4 20th 12.4 +0.3 7.8 2nd 29.2 52.5 low 56%
Casterton 26.6 +1.2 44.5 20th 10.3 +0.1 3.4 22nd 10.4 38.3 v low 27%
Colac (Mount Gellibrand) 24.9 +1.4 43.8 20th 10.3 -0.6 5.4 2nd 18.2 35.7 low 51%
Dartmoor 26.3 +1.4 46.9 20th 11.0 +0.1 5.8 8th 12.6 42.3 v low 30%
Hamilton Airport 27.0 +2.8 45.0 20th 10.2 +0.6 3.8 7th 10.4 43.3 v low 24%
Mortlake Racecourse 25.2 +1.6 44.0 20th 9.7 +0.4 3.0 23rd 18.2 40.2 low 45%
Port Fairy AWS 22.0 +0.7 45.2 20th 12.6 0.0 8.3 23rd 10.8 39.9 v low 27%
Portland (Cashmore Airport) 21.5 +1.2 43.6 20th 11.4 +0.4 7.1 11th 26.8 49.7 low 54%
Warrnambool Airport NDB 22.9 +0.2 44.2 20th 10.5 +0.3 1.9 23rd 21.2 46.1 low 46%

Notes

The Monthly climate summary, generally published on the first working day of each month, lists 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. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

This statement has been prepared based on information available at 1 pm on Monday 6 January 2020. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.

Averages for individual sites 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.

Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.

Further information

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