Victoria in summer 2020-21: wetter and cooler than average

Rainfall during summer 2020–2021 was above average for the state as a whole, owing to wetter than average January. Daytime temperatures were cooler than average in parts of south-central and eastern Victoria. Night-time temperatures were close to average across most of the state away from the north-west. In terms of mean temperature, this was the coolest summer since 2004–2005.

Wetter than average

  • State-wide, summer rainfall was 14% above the long-term summer mean of 119 mm.
  • Rainfall totals for this summer were above average in parts of central-west and south-west Victoria, as well as in the north-east.
  • Victoria's rainfall in January was 68% above average, while in December and February it was 24% and 16% below average respectively.
  • Some sites had their highest summer daily rainfall on record from rain events close to the beginning and the end of January, associated with low pressure troughs that brought tropical moisture to the state.
  • The highest daily rainfall total in Victoria this summer, 194.4 mm, was recorded at Haines Junction (Mount Sabine) on 4 January.
  • With a total 586.0 mm for the season Haines Junction (Mount Sabine) was also the wettest site in Victoria this summer.
  • Some sites had their highest total summer rainfall on record.
  • Above average rainfall was mostly a consequence of a moderate La Nina event that influenced Australia during this summer.

Mostly cool days in central and southern Victoria

  • Daytime temperatures were cooler than average in parts of south-central and eastern Victoria.
  • The mean maximum temperature for Victoria over summer 2020–2021 was 0.34 °C below average, the coolest since summer 2010–2011.
  • The mean maximum temperature in January was above average (an anomaly of +0.28 °C), but in December and February mean maximum temperatures were below average (monthly anomalies of -0.24 °C and -1.06 °C respectively).
  • Night-time temperatures were close to average across most of the state away from the north-west.
  • Victorian mean minimum temperature during summer was 0.18 °C above average, the coolest since summer 2004–2005.
  • Mean minimum temperature in January was nearly 1 °C above the long-term monthly average; in contrast, mean minimum temperatures in December and February were cooler than average (monthly anomalies of −0.09 °C and −0.31 °C respectively).
  • The last time Victoria recorded a cooler than average summer mean temperature was in summer 2004–2005.
  • Mount Baw Baw had its record lowest summer mean temperature.

Further information

Media
(03) 9669 4057

Extremes in summer 2020-21
Hottest day 43.9 °C at Ouyen (Post Office) on 24 Jan 2021
43.9 °C at Walpeup Research on 24 Jan 2021
Warmest days on average 31.4 °C at Mildura Airport
Coolest days on average 14.6 °C at Mount Baw Baw
Coldest day 2.4 °C at Mount Buller on 7 Dec 2020
Coldest night -2.6 °C at Mount Hotham on 16 Jan 2021
Coolest nights on average 6.2 °C at Mount Baw Baw
Warmest nights on average 16.0 °C at Gabo Island Lighthouse
Warmest night 28.3 °C at Walpeup Research on 25 Jan 2021
Warmest on average overall 23.4 °C at Mildura Airport
Coolest on average overall 10.4 °C at Mount Baw Baw
Wettest overall 586.0 mm at Haines Junction (Mount Sabine)
Wettest day 194.4 mm at Haines Junction (Mount Sabine) on 4 Jan 2021
Strongest wind gust 130 km/h at Wilsons Promontory Lighthouse on 6 Dec 2020

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 highest summer daily rainfall
New record
(mm)
Old
record
Years of
record
Uplands (Gibbo River Park) 111.0 on 6 Feb 2021 104.1 on 28 Dec 1919 94
Hunters Hill 104.0 on 30 Jan 2021 84.0 on 2 Dec 2017 28
Too Rour (Moroko Park) 144.4 on 30 Jan 2021 132.0 on 2 Dec 2017 22
Haines Junction (Mount Sabine) 194.4 on 4 Jan 2021 189.8 on 3 Feb 2005 21
Myrhee (Handcocks) 110.8 on 30 Jan 2021 109.8 on 3 Feb 2005 21



Record highest summer total rainfall
New record
(mm)
Old
record
Years of
record
Average for
summer
Haines Junction (Mount Sabine) 586.0 421.2 in 2004 20 233.2
Lorne (Mount Cowley) 373.6 312.2 in 2004 20 186.2



Lowest summer mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
summer
Mount Baw Baw 6.2 6.1 in 1997* 7.6

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




Record lowest summer mean temperature
New record
(°C)
Old
record
Years of
record
Average for
summer
Mount Baw Baw 10.4 10.5 in 2011 21 12.0



Summary statistics for summer 2020-21
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
summer
2020-21
Diff
from
average
Highest for
summer
2020-21
Mean for
summer
2020-21
Diff
from
average
Lowest for
summer
2020-21
Total for
summer
2020-21
Average
for
summer
Rank of
summer
2020-21
Fraction of
summer
average
North Mallee (district 76)
Mildura Airport 31.4 -0.2 43.3 24 Jan 2021 15.5 -0.6 7.9 8 Dec 2020 53.8 68.4 average 79%
Ouyen (Post Office) 30.9 -0.6 43.9 24 Jan 2021 14.3 -0.6 6.4 8 Dec 2020 39.4 69.8 low 56%
Walpeup Research 31.1 0.0 43.9 24 Jan 2021 13.9 -1.0 5.8 8 Dec 2020 57.8 69.1 average 84%
South Mallee (district 77)
Hopetoun Airport 30.7 -1.3 43.8 24 Jan 2021 13.3 -1.2 4.3 2 Dec 2020 33.8 77.9 low 43%
Swan Hill Aerodrome 30.9 -1.3 41.9 25 Jan 2021 14.4 -0.9 6.2 2 Dec 2020 37.0 66.2 low 56%
North Wimmera (district 78)
Kellalac (Warracknabeal Airport) 29.5   42.7 24 Jan 2021 12.4   4.8 9 Dec 2020 81.0
Nhill Aerodrome 28.7 -1.6 42.5 24 Jan 2021 12.4 -0.9 3.8 11 Dec 2020 91.2 71.9 high 127%
South Wimmera (district 79)
Edenhope Airport 26.5 -2.0 41.6 24 Jan 2021 11.7 -0.8 3.6 28 Dec 2020 85.0 87.3 average 97%
Grampians (Mount William) 17.8 -2.3 31.4 24 Jan 2021 7.5 -1.8 0.9 7 Dec 2020 115.0 162.2 low 71%
Horsham Aerodrome 28.8 -1.3 42.3 24 Jan 2021 11.0 -1.0 3.3 25 Dec 2020 51.2 74.2 average 69%
Kanagulk 27.0 -1.7 41.5 24 Jan 2021 11.1 -1.0 3.9 29 Dec 2020 81.6 93.9 average 87%
Longerenong 28.9 -0.4 42.3 24 Jan 2021 11.8 -0.7 3.2 9 Dec 2020 46.6 74.5 average 63%
Pyrenees (Ben Nevis) 21.6 -2.5 34.0 24 Jan 2021 9.9 -1.8 3.2 8 Dec 2020 164.4 125.7 high 131%
Lower North (district 80)
Charlton 29.4 -2.0 41.2 24 Jan 2021 13.5 -1.1 6.0 9 Dec 2020 90.4 81.5 average 111%
Echuca Aerodrome 29.8 -0.5 40.8 25 Jan 2021 13.7 -0.9 6.6 3 Dec 2020 51.1 83.0 average 62%
Kerang 30.3 -0.6 41.4 25 Jan 2021 14.6 0.0 7.2 8 Dec 2020 79.8 74.5 average 107%
Kyabram 29.7 0.0 41.8 25 Jan 2021 13.6 -0.5 6.0 8 Dec 2020 89.6 96.2 average 93%
Upper North (district 81)
Bendigo Airport 27.8 -1.3 40.0 25 Jan 2021 12.7 -0.9 3.9 2 Dec 2020 109.0 104.1 high 105%
Shepparton Airport 29.9 -0.9 42.1 25 Jan 2021 13.8 -0.7 6.3 8 Dec 2020 70.0 96.5 average 73%
Tatura Inst Sustainable Ag 28.1 -0.9 40.4 25 Jan 2021 13.5 -0.3 7.3 9 Dec 2020 80.6 101.1 average 80%
Yarrawonga 30.7 -0.9 42.3 25 Jan 2021 14.0 -1.1 6.4 8 Dec 2020 109.6 118.9 average 92%
Lower Northeast (district 82)
Benalla Airport     40.3 25 Jan 2021 13.9 -1.0 6.5 9 Dec 2020 155.7 133.6 average 117%
Hunters Hill 23.5 -1.4 33.8 24 Jan 2021 12.6 -1.0 3.0 8 Dec 2020 322.6 218.0 v high 148%
Rutherglen Research 30.3 -0.2 41.0 25 Jan 2021 11.8 -1.3 2.2 3 Dec 2020 169.8 119.5 high 142%
Strathbogie 25.3 -1.3 37.3 25 Jan 2021 9.9 -1.1 2.9 5 Dec 2020 244.4 150.7 high 162%
Wangaratta Aero 29.8 -1.1 41.4 25 Jan 2021 12.5 -0.8 4.5 9 Dec 2020 128.2 130.9 average 98%
Upper Northeast (district 83)
Falls Creek 15.4 -1.5 23.7 24 Jan 2021 6.9 -1.2 -2.4 16 Jan 2021 506.8 321.3 v high 158%
Mount Buller 15.5 -1.1 24.9 25 Jan 2021 7.2 -0.9 -1.8 8 Dec 2020 270.0 258.7 average 104%
Omeo 24.6 -1.3 36.3 24 Jan 2021 9.8 -0.6 2.3 12 Dec 2020 196.4 173.1 average 113%
East Gippsland (district 84)
Combienbar AWS 22.8 -1.7 37.9 25 Jan 2021 12.2 -0.7 5.9 11 Dec 2020
Gabo Island Lighthouse 21.2 +0.2 27.0 25 Jan 2021 16.0 +0.5 10.8 8 Dec 2020 288.2 202.6 high 142%
Gelantipy 21.7 -1.3 35.5 25 Jan 2021 10.2 -0.8 1.6 19 Dec 2020 217.2 196.7 average 110%
Lakes Entrance (Eastern Beach Road) 22.3 -1.5 41.9 25 Jan 2021 13.6 -0.8 7.4 11 Dec 2020 172.9 161.4 average 107%
Mallacoota 22.8 -0.8 39.6 25 Jan 2021 15.4 +0.3 7.8 12 Dec 2020 246.6 198.1 high 124%
Mount Nowa Nowa 22.9 -1.2 39.8 25 Jan 2021 13.0 -0.7 7.4 11 Dec 2020 217.0 203.8 average 106%
Orbost 24.0 -1.4 36.4 11 Jan 2021 13.4 -0.8 5.8 11 Dec 2020 210.0 166.9 average 126%
West Gippsland (district 85)
Bairnsdale Airport 24.0 -1.1 41.4 25 Jan 2021 12.3 -0.1 5.1 11 Dec 2020 176.4 155.6 average 113%
Corner Inlet (Yanakie) 21.9   39.2 25 Jan 2021 12.7   3.2 11 Dec 2020 165.8
East Sale 24.4 -0.4 41.4 25 Jan 2021 12.5 0.0 6.8 11 Dec 2020 121.0 140.8 average 86%
East Sale Airport 24.9   42.1 25 Jan 2021 12.6   6.7 11 Dec 2020 120.4
Morwell (Latrobe Valley Airport) 25.1 -0.9 40.5 25 Jan 2021 11.9 -0.5 3.9 11 Dec 2020 125.8 158.9 low 79%
Mount Baw Baw 14.6 -1.7 25.3 24 Jan 2021 6.2 -1.4 -1.0 2 Dec 2020 410.8 352.7 high 116%
Mount Moornapa 23.4 -1.2 39.7 25 Jan 2021 11.9 -0.9 6.5 19 Dec 2020 217.4 202.5 average 107%
Nilma North (Warragul) 23.7   36.1 11 Jan 2021 11.6   4.3 3 Dec 2020 158.0
Pound Creek 22.9 -1.5 37.1 25 Jan 2021 11.7 -0.8 1.0 11 Dec 2020 192.2 140.6 high 137%
Wilsons Promontory Lighthouse 20.0 +0.1 37.1 25 Jan 2021 14.7 +0.8 10.0 8 Dec 2020 257.2 163.6 v high 157%
Yarram Airport 23.6 -1.2 36.7 11 Jan 2021 11.2 -1.4 1.7 11 Dec 2020 191.6 148.9 high 129%
East Central (district 86)
Cerberus 23.2 -0.8 37.3 25 Jan 2021 12.9 -0.5 5.0 3 Dec 2020 146.6 130.9 average 112%
Coldstream 25.7 -1.4 39.2 25 Jan 2021 10.7 -0.6 3.2 29 Dec 2020 183.8 159.1 high 116%
Essendon Airport 25.0 -0.7 40.7 25 Jan 2021 13.6 +0.3 7.9 28 Feb 2021 120.0 140.0 average 86%
Ferny Creek 21.1   34.3 25 Jan 2021 11.4   6.1 3 Dec 2020 350.4 253.8 v high 138%
Frankston (Ballam Park) 24.0   38.3 25 Jan 2021 13.2   8.1 11 Dec 2020 154.4
Melbourne (Olympic Park) 24.2   39.2 25 Jan 2021 14.5   9.0 29 Dec 2020 139.2
Melbourne Airport 25.1 -0.9 40.5 25 Jan 2021 12.6 -0.8 6.8 3 Dec 2020 143.4 133.8 average 107%
Moorabbin Airport 24.3 -1.0 40.6 25 Jan 2021 13.4 -0.4 7.0 29 Dec 2020 139.0 150.4 average 92%
Rhyll 22.9 -0.5 34.8 25 Jan 2021 14.7 -0.4 10.1 3 Dec 2020 149.6 124.5 high 120%
Scoresby Research Institute 25.3 -0.4 39.9 25 Jan 2021 12.5 -0.6 5.6 29 Dec 2020 160.2 182.2 average 88%
Viewbank 25.9 -1.3 40.8 25 Jan 2021 13.1 -0.9 6.9 3 Dec 2020 156.6 159.2 average 98%
West Central (district 87)
Avalon Airport 24.2 -1.6 38.6 25 Jan 2021 12.7 -0.8 6.4 29 Dec 2020 139.8 95.1 high 147%
Breakwater (Geelong Racecourse) 23.5   37.1 11 Jan 2021 13.0   6.7 3 Dec 2020 129.6 105.7 high 123%
Laverton RAAF 24.2 -0.9 41.5 25 Jan 2021 13.5 +0.1 7.3 20 Dec 2020 124.6 131.3 average 95%
Sheoaks 23.8 -1.4 37.3 24 Jan 2021 11.1 -0.8 3.6 20 Dec 2020 154.0 106.2 high 145%
North Central (district 88)
Eildon Fire Tower 24.4 -1.7 36.2 25 Jan 2021 11.7 -1.3 5.2 8 Dec 2020 171.4 134.7 high 127%
Lake Eildon 27.3 -0.9 37.8 25 Jan 2021 11.9 -0.3 5.2 3 Dec 2020 185.6 148.4 high 125%
Mangalore Airport 28.0 -0.8 40.7 25 Jan 2021 12.7 -0.8 4.6 8 Dec 2020 130.8 118.7 average 110%
Maryborough 26.7 -1.4 38.9 24 Jan 2021 12.4 -0.1 6.6 26 Dec 2020 138.3 101.0 high 137%
Puckapunyal Lyon Hill (Defence) 27.3   40.2 25 Jan 2021 13.6   7.1 8 Dec 2020 111.4
Puckapunyal West (Defence) 26.5   39.4 25 Jan 2021 12.6   6.6 8 Dec 2020 2.0
Redesdale 27.8 -0.9 39.3 24 Jan 2021 11.2 -1.1 3.9 2 Dec 2020 101.6 108.1 average 94%
Wallan (Kilmore Gap) 22.9 -1.3 36.8 25 Jan 2021 11.0 -0.8 4.9 28 Dec 2020 161.0 142.5 average 113%
Western Plains (district 89)
Ararat Prison 25.7 -0.7 38.8 24 Jan 2021 11.1 +0.4 3.1 19 Dec 2020 130.4 108.4 high 120%
Ballarat Aerodrome 23.3 -1.0 36.5 25 Jan 2021 10.5 -0.1 3.8 2 Dec 2020 166.0 133.2 high 125%
Westmere 24.8 -2.5 38.6 24 Jan 2021 10.1 -0.7 1.4 25 Feb 2021 152.8 105.4 high 145%
West Coast (district 90)
Aireys Inlet 21.5 -1.1 37.5 11 Jan 2021 13.2 -0.5 7.3 3 Dec 2020 135.6 111.6 high 122%
Cape Nelson Lighthouse 20.0 -0.9 37.7 11 Jan 2021 13.9 -0.4 6.0 3 Dec 2020 161.6 100.1 v high 161%
Cape Otway Lighthouse 19.8 -1.2 36.5 11 Jan 2021 13.5 +0.4 7.1 3 Dec 2020 204.8 138.6 high 148%
Casterton 24.6 -2.4 40.5 24 Jan 2021 10.8 -0.8 1.7 28 Dec 2020 109.4 102.6 average 107%
Colac (Mount Gellibrand) 23.1 -1.9 36.1 24 Jan 2021 11.5 -0.7 5.6 3 Dec 2020 121.2 98.2 high 123%
Dartmoor 24.1 -2.0 42.3 24 Jan 2021 11.5 -0.5 2.9 3 Dec 2020 133.4 105.0 high 127%
Hamilton Airport 24.2 -1.7 39.9 24 Jan 2021 10.5 -0.2 3.4 3 Dec 2020 134.2 101.9 high 132%
Mortlake Racecourse 23.9 -1.6 40.0 24 Jan 2021 10.3 -0.3 1.6 28 Dec 2020 144.8 107.7 high 134%
Port Fairy AWS 21.5 -0.8 39.5 24 Jan 2021 13.3 -0.4 4.6 3 Dec 2020
Portland (Cashmore Airport) 21.0 -0.7 38.9 24 Jan 2021 12.0 0.0 2.7 3 Dec 2020 151.8 115.5 high 131%
Warrnambool Airport NDB 22.2 -1.8 38.6 24 Jan 2021 11.3 -0.2 3.8 26 Dec 2020 198.0 115.0 v high 172%

Notes

The Seasonal 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 9 am on Monday 1 March 2021. 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

Media
(03) 9669 4057

Climate