Victoria in May 2022: below average rainfall overall

May rainfall was below average across much of southern Victoria, and above average only in the far north-west of the state. Night-time temperatures were above average in most of Victoria's north. Daytime temperatures were close to average across the state.

Below average rainfall

  • For Victoria as a whole, rainfall was 33% below the 1961–1990 May average of 66.5 mm, the lowest since 2009.
  • The month was drier than average across much of Victoria, particularly in parts of the south.
  • It was wetter than average only in the far north-west of the state.
  • Widespread rainfall was associated with a strong cold front on the 4th; a cold and unstable west to south-westerly airstream followed the front, bringing showers to the state's south.
  • A low pressure system that developed just east of Tasmania on the 6th brought more showers to the south and snow to Victoria's Alps, while a low pressure trough that dragged a tropical moisture from the north resulted in widespread rainfall over northern Victoria on the 12th and 13th.
  • A series of cold fronts and low pressure troughs affected Victoria between the 25th and 28th, delivering widespread moderate rainfall and more snow to the Alpine region.
  • Close to the end of the month, a deep low pressure system moved across northern Victoria; scattered showers extended from the north-east to the north-west, with some isolated showers in the south of the state; widespread daily rainfall totals of 5 to 15 mm were recorded in much of Victoria, and 15 to 30 mm in the north-east.
  • The highest daily rainfall total in Victoria this May, 60.0 mm, was recorded on the 8th at the Wilsons Promontory Lighthouse.
  • With 177.4 mm recorded for the month, Wilsons Promontory Lighthouse was also the wettest place in Victoria this month.
  • Mildura Airport and Walpeup Research had their highest total May rainfall for at least 20 years
  • Victoria's year-to-date (January to May) rainfall was 14% above average.

Close to average daytime temperatures

  • May saw a mixture of cool and mild days, with mean daytime temperatures close to average across Victoria.
  • The Victorian mean maximum temperature was just 0.08 °C below the 1961–1990 average for May.
  • Cold conditions followed the passage of a cold front on the 4th, with daytime temperatures 2 to 6 degrees below average.
  • May finished with cold daytime temperatures, as a pool of polar air followed the passage of a strong cold front, bringing winter-like conditions to the state.
  • The lowest daytime temperature in Victoria this month was −3.7 °C at Mount Hotham on the 31st.
  • Some sites had their coldest day in May on record on the 30th and 31st.
  • Night-time temperatures were above average in most of Victoria's north.
  • The Victorian mean minimum temperature was 0.53 °C above the May average.
  • Some sites had their warmest May night (highest daily minimum temperature) on record.
  • A large, slow-moving high-pressure system dominated the state's weather between the 19th and 25th, with clear skies and light winds.
  • Victoria's lowest daily minimum temperature this May, −4.6 °C, was recorded at Omeo on the 25th.
  • Colac (Mount Gellibrand) had its lowest May temperature on record.
  • The year-to-date (January to May) mean minimum temperature for Victoria was 1.66 °C above average, the forth-highest on record, while the mean maximum temperature was 0.50 °C above average.

Snow, fog and frost

  • Victoria's Alpine region received its first snow for the season on the 7th due to a low-pressure system that developed just east of Tasmania,
  • On the 9th, morning fog patches were observed across Victoria, including the eastern suburbs of Melbourne.
  • There were areas of frost in eastern Victoria as overnight temperatures dropped below zero on the 19th.
  • The second significant snow falls of the year across the Victorian Alps were recorded on the 17th, with heavier falls towards the end of the month.

Further information

Media
(03) 9669 4057

Extremes in May 2022
Hottest day 25.4 °C at Mallacoota on the 14th
Warmest days on average 18.5 °C at Ouyen (Post Office)
Coolest days on average 4.3 °C at Mount Hotham
Coldest day -3.7 °C at Mount Hotham on the 31st
Coldest night -4.6 °C at Omeo on the 25th
Coolest nights on average 0.3 °C at Mount Hotham
Warmest nights on average 11.8 °C at Gabo Island Lighthouse
Warmest night 16.4 °C at Gabo Island Lighthouse on the 15th
Warmest on average overall 14.7 °C at Gabo Island Lighthouse
Coolest on average overall 2.3 °C at Mount Hotham
Wettest overall 177.4 mm at Wilsons Promontory Lighthouse
Wettest day 60.0 mm at Wilsons Promontory Lighthouse on the 8th
Strongest wind gust 115 km/h at Wilsons Promontory Lighthouse on the 15th

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 May daily rainfall
New record
(mm)
Old
record
Years of
record
Cape Schanck 48.0 on the 5th =48.0 on the 4th in 2012 23



Highest May total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
May
Mildura Airport 52.8 63.6 in 1990 25.2
Walpeup Research 59.4 63.0 in 1995* 30.4

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




Record lowest May daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Avalon Airport 9.2 on the 31st 9.4 on the 29th in 2019 28 17.3
Cape Nelson Lighthouse 11.7 on the 31st 11.9 on the 29th in 2019 26 16.2
Viewbank 9.7 on the 30th 10.3 on the 17th in 2008 23 17.2



Record highest May daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Falls Creek 8.4 on the 14th 7.8 on the 9th in 2016 31 0.6
Mount Hotham 7.9 on the 14th 7.1 on the 9th in 2016 31 -0.1
Mount Baw Baw 9.0 on the 14th = 9.0 on the 5th in 2005 25 1.5



Record lowest May temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Colac (Mount Gellibrand) 2.2 on the 6th 2.4 on the 29th in 2004 22 7.9



Summary statistics for May 2022
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
May
2022
Diff
from
average
Highest for
May
2022
Mean for
May
2022
Diff
from
average
Lowest for
May
2022
Total for
May
2022
Average
for
May
Rank of
May
2022
Fraction of
May
average
North Mallee (district 76)
Mildura Airport 18.3 -0.8 22.0 25th 8.3 +0.9 2.9 20th 52.8 25.2 high 210%
Ouyen (Post Office) 18.5 -0.4 23.5 14th 8.4 +1.2 3.5 5th 55.7 31.4 high 177%
Walpeup Research 18.0 -0.4 22.3 3rd 8.5 +0.7 3.1 5th 59.4 30.4 v high 195%
South Mallee (district 77)
Hopetoun Airport 17.7 -1.2 21.5 3rd 7.3 +1.3 0.4 19th 31.6 26.4 high 120%
Swan Hill Aerodrome 17.6 -1.2 21.7 15th 7.8 +1.4 3.4 20th 34.0 26.0 high 131%
North Wimmera (district 78)
Kellalac (Warracknabeal Airport) 17.0   20.9 3rd 7.4   1.6 6th 29.4
Nhill Aerodrome 16.9 -0.9 21.7 3rd 7.6 +0.9 2.1 20th 45.2 30.7 high 147%
South Wimmera (district 79)
Edenhope Airport 16.5 -0.2 21.9 3rd 7.8 +0.6 1.3 5th 51.6 47.2 average 109%
Grampians (Mount William) 7.9 -0.5 13.2 10th 3.6 -0.1 -1.1 31st 92.2 131.1 low 70%
Horsham Aerodrome 17.0 -0.6 21.4 3rd 6.2 +0.9 0.4 20th 34.6 34.5 average 100%
Kanagulk 16.4 -0.1 21.8 3rd 6.6 +0.2 0.5 6th 40.0 44.1 average 91%
Longerenong 16.9 -0.2 21.3 3rd 6.7 +0.8 0.4 20th 30.0 42.6 average 70%
Pyrenees (Ben Nevis) 10.5 -0.5 14.2 3rd 5.6 +0.2 0.6 6th 46.0 75.0 v low 61%
Stawell Aerodrome 15.8 -0.4 19.5 3rd 6.9 +0.5 -0.5 6th 29.4 42.4 average 69%
Lower North (district 80)
Charlton 17.0 -1.0 21.0 2nd 7.0 +0.6 1.0 19th 27.8 34.8 average 80%
Echuca Aerodrome 17.1 -0.5 21.2 15th 7.1 +0.5 2.0 20th 45.4 40.4 average 112%
Kerang 17.5 -0.6 22.3 15th 7.5 +0.8 2.9 6th 35.0 35.7 average 98%
Kyabram 16.8 -0.5 20.9 10th 6.9 +0.8 1.1 29th 26.2 41.6 average 63%
Upper North (district 81)
Bendigo Airport 15.8 -0.9 19.5 10th 6.2 +0.9 -0.8 6th 37.6 46.9 average 80%
Shepparton Airport 17.1 -0.5 21.7 10th 6.0 +0.4 0.2 29th 27.6 34.1 average 81%
Tatura Inst Sustainable Ag 16.8 -0.4 20.8 15th 6.1 +0.4 -0.3 29th 33.0 44.3 average 74%
Yarrawonga 17.9 -0.2 22.9 4th 7.0 +0.9 0.1 29th 38.4 36.0 average 107%
Lower Northeast (district 82)
Benalla Airport 16.9 -0.6 21.5 10th 6.2 +1.1 0.4 6th 34.7 46.1 low 75%
Corryong Airport 17.1 +1.1 21.7 14th 4.5 +1.4 -2.6 20th 46.2 57.2 low 81%
Dartmouth Reservoir 15.5 -0.5 20.0 3rd 6.0 +1.3 1.2 6th 72.6 85.8 average 85%
Hunters Hill 11.2 -0.6 15.3 4th 5.8 +0.3 1.0 7th 133.6 100.7 high 133%
Rutherglen Research 17.5 +0.5 22.1 3rd 5.1 +0.8 -1.3 19th 50.2 51.5 average 97%
Strathbogie 14.3 -0.1 18.8 10th 3.6 0.0 -2.7 29th 57.0 95.0 average 60%
Wangaratta Aero 17.2 -0.2 21.0 4th 5.3 +1.0 -1.4 20th 41.8 56.0 average 75%
Upper Northeast (district 83)
Falls Creek 5.2 -0.8 10.6 13th 0.7 +0.1 -4.1 19th 127.4 102.5 average 124%
Mount Buller 5.1 -1.0 10.4 13th 0.9 -0.1 -3.6 30th 122.0 141.4 average 86%
Mount Hotham 4.3 -0.3 9.4 13th 0.3 +0.4 -4.4 7th 120.8 138.4 average 87%
Omeo 14.8 +0.4 20.2 13th 3.4 +0.6 -4.6 25th 27.8 38.2 average 73%
East Gippsland (district 84)
Combienbar AWS 14.8 +0.4 21.8 14th 7.9 +0.2 3.0 31st 59.2 67.7 average 87%
Gabo Island Lighthouse 17.5 +0.6 22.0 14th 11.8 +0.6 7.4 7th 43.2 97.7 low 44%
Gelantipy 13.1 +0.1 18.4 13th 5.3 +0.4 0.3 30th 37.4 47.3 average 79%
Lakes Entrance (Eastern Beach Road) 17.2 -0.7 21.6 1st 8.0 -0.5 2.3 25th 20.8 41.9 low 50%
Mallacoota 17.7 +0.1 25.4 14th 9.2 -0.1 4.0 7th 41.8 82.4 low 51%
Mount Nowa Nowa 15.8 -0.1 20.6 15th 8.8 +0.1 4.5 31st 32.0 59.6 average 54%
Orbost 17.7 -0.1 23.6 15th 8.5 +0.1 3.3 30th 51.4 57.6 average 89%
West Gippsland (district 85)
Bairnsdale Airport 17.2 -0.4 23.1 4th 6.4 -0.3 -0.5 25th 28.2 44.3 average 64%
Corner Inlet (Yanakie) 16.3   21.7 2nd 8.4   1.5 21st 63.6 89.8 low 71%
East Sale 16.8 -0.1 22.9 15th 6.6 +0.3 0.4 30th 18.0 49.7 low 36%
East Sale Airport 16.7   22.7 15th 6.2   0.3 30th 21.8
Morwell (Latrobe Valley Airport) 16.8 -0.1 22.3 15th 5.6 -0.8 -0.8 29th 22.6 54.5 low 41%
Mount Baw Baw 6.1 -0.3 10.7 11th 1.7 +0.2 -3.0 6th 60.0 122.6 v low 49%
Mount Moornapa 15.1 +0.1 20.2 4th 8.0 +0.1 3.3 6th 30.8 47.9 average 64%
Nilma North (Warragul) 15.7   21.6 2nd 6.4   -0.1 6th 49.0
Pound Creek 16.9 -0.1 21.8 2nd 7.5 -0.6 -0.6 22nd 69.4 96.3 low 72%
Wilsons Promontory Lighthouse 15.0 0.0 19.8 3rd 11.7 +0.6 8.9 31st 177.4 114.6 high 155%
Yarram Airport 16.9 -0.4 21.9 15th 6.0 -0.7 -0.5 30th 17.4 47.4 v low 37%
East Central (district 86)
Cerberus 16.3 -0.4 21.7 2nd 8.3 -0.1 1.3 30th 37.4 69.0 low 54%
Coldstream 16.7 0.0 21.0 2nd 5.4 -0.2 -0.3 29th 36.6 68.1 low 54%
Essendon Airport 16.5 +0.1 21.1 15th 8.4 +0.5 2.6 21st 22.2 48.7 low 46%
Ferny Creek 13.0 +0.1 17.2 11th 7.8 0.0 3.1 5th 59.4 126.8 v low 47%
Frankston (Ballam Park) 16.2   21.5 2nd 9.2   4.2 21st 33.8
Melbourne (Olympic Park) 16.8   22.1 2nd 9.4   4.6 21st 24.2
Melbourne Airport 16.4 -0.3 21.4 2nd 7.8 -0.5 2.9 21st 18.0 40.1 low 45%
Moorabbin Airport 16.8 -0.2 22.4 2nd 8.7 0.0 2.8 21st 29.2 68.1 low 43%
Rhyll 16.3 0.0 21.2 2nd 10.8 +0.1 7.3 21st 40.0 74.0 low 54%
Scoresby Research Institute 16.7 +0.3 21.1 2nd 8.1 -0.2 2.5 21st 32.0 86.2 v low 37%
Viewbank 16.9 -0.3 22.2 2nd 7.6 -0.3 1.3 21st 33.4 53.8 low 62%
West Central (district 87)
Avalon Airport 16.3 -1.0 21.9 2nd 7.3 -0.3 1.6 23rd 22.2 37.4 low 59%
Breakwater (Geelong Racecourse) 16.4 -1.1 21.1 2nd 7.9 -0.7 1.2 23rd 15.6 47.2 v low 33%
Laverton RAAF 16.5 -0.4 22.0 2nd 7.9 +0.1 2.9 24th 17.8 45.7 low 39%
Point Cook RAAF 16.0   21.8 2nd 7.8   2.7 6th 16.4
Sheoaks 15.2 -0.4 19.9 2nd 6.8 -0.5 1.1 6th 21.0 39.0 low 54%
North Central (district 88)
Castlemaine Prison 15.6 -0.1 19.0 15th 6.2 +0.8 -0.5 6th 27.5 57.5 low 48%
Eildon Fire Tower 13.0 -0.3 17.9 10th 7.0 +0.4 3.2 31st 37.6 55.0 average 68%
Lake Eildon 15.5 -0.7 20.6 10th 6.3 +0.3 1.0 22nd 37.2 78.1 low 48%
Mangalore Airport 16.0 -0.7 20.5 10th 5.5 -0.5 -0.1 6th 39.0 53.2 average 73%
Maryborough 16.1 -0.1 19.5 22nd 6.3 +0.2 -0.1 6th 27.6 49.0 average 56%
Puckapunyal Lyon Hill (Defence) 16.0   19.8 15th 7.2   1.7 6th 38.0
Puckapunyal West (Defence) 15.3   19.3 10th 7.4   1.9 6th 45.4
Redesdale 16.0 -0.1 19.9 10th 5.3 +0.2 -0.7 6th
Wallan (Kilmore Gap) 12.6 -0.3 17.2 2nd 6.8 -0.1 2.8 6th 41.8 59.1 average 71%
Western Plains (district 89)
Ballarat Aerodrome 13.9 +0.2 18.6 2nd 5.3 -0.4 -1.7 6th 34.6 64.3 low 54%
Westmere 15.9 +0.2 20.8 11th 5.8 -0.6 -2.2 21st 11.8 55.1 v low 21%
West Coast (district 90)
Aireys Inlet 15.9 -0.4 20.8 2nd 9.6 -0.3 5.9 6th 12.4 55.9 v low 22%
Cape Nelson Lighthouse 16.1 -0.1 21.9 3rd 10.7 -0.1 6.8 6th 83.6 73.9 average 113%
Cape Otway Lighthouse 15.5 -0.1 20.7 3rd 10.4 +0.3 6.1 6th 104.6 91.5 average 114%
Casterton 16.1 -0.1 22.0 3rd 7.0 -0.2 1.4 6th 60.4 68.3 average 88%
Colac (Mount Gellibrand) 14.8 -0.3 19.6 11th 7.9 0.0 2.2 6th 37.2 46.3 low 80%
Dartmoor 16.7 +0.4 22.4 3rd 7.8 +0.3 1.3 10th 74.8 85.9 low 87%
Hamilton Airport 15.6 0.0 21.2 3rd 6.7 +0.1 -0.9 6th 48.2 54.6 average 88%
Mortlake Racecourse 16.6 +0.4 22.0 3rd 5.9 -0.7 -1.0 10th 27.4 57.4 low 48%
Port Fairy AWS 17.0 +0.2 22.8 3rd 8.5 -0.7 2.4 22nd 62.0 69.4 average 89%
Portland (Cashmore Airport) 16.3 +0.4 21.8 3rd 7.8 -0.6 1.5 10th 79.2 83.6 average 95%
Warrnambool Airport NDB 16.8 +0.3 22.7 3rd 7.4 -0.1 1.3 23rd 61.6 75.8 average 81%

Notes

The Monthly climate summary, generally published on the third 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 10 am on Wednesday 1 June 2022. 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