Western Australia in March 2021: wet in the west and north-east Western Australia

Rainfall was above average in western and north-eastern Western Australia, and near average rainfall for the remainder of the state. For the state as a whole, rainfall was above average. Mean maximum temperatures were below average for much of the Kimberley and Pilbara, though the Gascoyne and southern coasts saw above average mean maxima. Mean minimum temperatures were above average for most of the southern half of the state. It was the coolest March since 2012 for Western Australia as a whole.

Wet in the west and north-east WA

  • Rainfall was 49% above average for Western Australia as a whole.
  • A broad trough and a weak low pressure system tracked over the state's west and south, and produced thunderstorms and showers with moderate to heavy daily rainfall at the start of March; some sites in the South West Land Division (SWLD) had their highest March daily rainfall on record on the 3rd or 4th.
  • A low pressure trough off north-west WA and a tropical low developed and lingered to the west of the Kimberley in the second half of March to produce thunderstorms and showers with moderate to locally heavy daily rainfall in the Kimberley between the 14th and 21st; the highest daily rainfall total was 177 mm at Flora Valley on the 15th.
  • Many sites in the SWLD had their wettest March on record or wettest March for at least 20 years.

Cooler daytime temperatures in the north; warmer nights in the south

  • It was the coolest March since 2012 for Western Australia as a whole.
  • WA mean maximum temperature was near average, the lowest March mean maximum temperature since 2012.
  • WA mean minimum temperature was 0.12 °C above average, but also the lowest March mean minimum temperature since 2012.
  • Daytime temperatures dropped to the low to mid-20s in the Kimberley and east Pilbara on the 19th and 20th; a number of sites had their coldest March day on record.
  • Very hot temperatures in the low 40s were recorded in the Southern Interior on the 4th and 5th; Warburton Airfield recorded the state's highest temperature of the month at 42.7 °C on the 4th.
  • Low-intensity heatwave conditions were observed in the inland southern Gascoyne and eastern SWLD, with severe heatwave in the Southeast Coastal District towards the end of March.
  • Several sites in the SWLD had their highest March temperature on record or late season records (a late season record is the highest temperature so late in March) on the 29th or 30th.
  • Esperance town experienced 2 very hot days towards the end of the month, with a maximum temperature of 37.8 °C on the 29th and a late season record of 41.8 °C on the 30th, resulting in the month being the town's warmest March on record.
  • A number of sites in the SWLD had their highest March minimum temperature on record or their late season record on the 30th.

Flooding in the Kimberley catchments

  • A low pressure trough off north-west WA, and a tropical low developed and lingered to the west of the Kimberley to produce thunderstorms with moderate to heavy rainfall from the 14th to 21st.
  • The Ord River recorded moderate flooding and peaked at 10.05 meters at Old Ord Homestead on the 15th.
  • The Fitzroy River also recorded moderate flood levels, peaking at 11.7 meters at Fitzroy Crossing on the 22nd.

Thunderstorms in the SWLD

  • Thunderstorms with moderate to heavy rainfall were recorded in the South West Land Division on the 3rd and 4th, with damaging wind gusts and resulting in flash flooding in the Central West and Lower West districts.
  • Canterbury in the south-eastern Central West recorded 41.8 mm in 15 minutes in the evening of the 3rd, which is less than 1% of its historical Annual Exceedance Probability.

Further information

Media
(03) 9669 4057

Extremes in March 2021
Hottest day 42.7 °C at Warburton Airfield on the 4th
Warmest days on average 36.5 °C at Paraburdoo Aero
36.5 °C at Roebourne Aero
Coolest days on average 23.6 °C at Albany
Coldest day 17.2 °C at Rocky Gully on the 22nd
Coldest night 2.3 °C at Eyre on the 25th
Coolest nights on average 12.4 °C at Bridgetown
Warmest nights on average 26.7 °C at Legendre Island
26.7 °C at Troughton Island
Warmest night 30.1 °C at Giles Meteorological Office on the 5th
Warmest on average overall 30.5 °C at Wyndham Aero
Coolest on average overall 19.3 °C at Windy Harbour
Wettest overall 445.0 mm at Marion Downs
Wettest day 177.0 mm at Flora Valley on the 15th
Strongest wind gust85 km/h at Newman Aero 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 highest March daily rainfall
New record
(mm)
Old
record
Years of
record
Marradong 89.0 on the 4th 82.8 on the 9th in 1934 117
Culford 70.4 on the 4th 49.0 on the 20th in 1993 51
Flora Valley 177.0 on the 15th 89.0 on the 6th in 1996 45
Nunile 51.0 on the 3rd 29.4 on the 26th in 2013 31
Worsley Downs 30.8 on the 4th 27.4 on the 6th in 1981 27
Dalwallinu 77.0 on the 3rd 49.8 on the 26th in 2016 24
Wandering 57.2 on the 4th 42.0 on the 10th in 2000 23
Toodyay East 67.6 on the 4th 37.0 on the 27th in 2016 21
Werribee 68.4 on the 4th 55.6 on the 27th in 2016 21
Tabletop 49.2 on the 4th 35.0 on the 11th in 2013 20



Record highest March total rainfall
New record
(mm)
Old
record
Years of
record
Average for
March
Marradong 144.2 105.2 in 1960 124 19.4
Culford 115.8 79.2 in 1971 49 19.4
Nunile 149.8 79.6 in 2016 31 21.4
York 118.0 66.7 in 1997 25 21.6
Dalwallinu 114.8 110.2 in 2000 24 27.9
Waeel 123.4 104.6 in 1938 23 28.4
Wandering 98.6 62.0 in 2013 22 20.5
Caljie 96.8 62.6 in 2013 21 19.6
Toodyay East 155.2 72.0 in 2016 21 23.6
Werribee 110.6 96.8 in 2016 21 23.1
Yangedine 77.4 58.4 in 2013 21 19.7
Quadney 116.0 76.2 in 2016 20 20.1

Highest March total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
March
Chidlow 102.3 179.2 in 1934 20.4
Redlands 83.4 149.7 in 1934* 16.8
Beverley 69.8 72.2 in 1968 17.0
Lancelin 65.0 69.1 in 1971 16.0
Northam 137.3 167.9 in 1971 19.3
Amery Acres 80.8 137.3 in 1971* 18.4
Graball 68.2 94.8 in 1992* 21.7
Huntly 71.1 125.6 in 1998 28.5
Karnet 65.4 92.3 in 1998 25.3
Barberton 72.4 121.0 in 1999 19.1
Brunswick Junction 64.4 101.2 in 1998* 23.9
Cadoux 81.6 162.8 in 1999 21.0
Happy Valley 75.6 98.2 in 1999 17.2
Kokardine 105.6 148.4 in 1999 21.0
Cowcowing 52.6 111.6 in 2000 20.7
Doodlakine 50.4 63.4 in 2000 19.6
Jourerdine 102.0 150.0 in 2000 23.5
Karara 88.0 144.4 in 2000 26.7
Koorda 69.0 85.5 in 2000 22.3
Latham 68.8 144.2 in 2000 19.9
Mindalla 70.9 181.3 in 1999* 20.9
Mount Gibson 107.0 168.0 in 2000 31.9
Paynes Find 106.0 142.0 in 2000 26.1
Trayning 63.6 137.2 in 1999* 22.5
Wialki 105.0 129.2 in 2000 24.4
Wialki South 93.0 129.7 in 2000 24.6
Napier Downs 309.4 350.0 in 2001 124.4
Nungarin 63.2 86.6 in 2000* 21.8
Thundelarra 72.4 102.4 in 2000* 29.8

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




Record highest March temperature
New record
(°C)
Old
record
Years of
record
Average for
March
Newdegate Research Station 39.8 on the 29th 39.6 on the 1st in 2008 25 28.0
Lake Grace 40.6 on the 29th 40.0 on the 1st in 1998 24 28.0



Record lowest March daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
March
Telfer Aero 21.0 on the 19th 22.4 on the 1st in 2003 47 37.6
Cygnet Bay 26.0 on the 20th 26.7 on the 7th in 2000 34 33.8
Doongan 24.0 on the 20th = 24.0 on the 7th in 2007 33 33.4
Fitzroy Crossing Aero 25.6 on the 19th 27.6 on the 7th in 2006 24 37.2



Record highest March mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
March
Esperance 27.1 26.9 in 2005 51 25.1



Record lowest March mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
March
Varanus Island 31.5 = 31.5 in 2015 21 32.8



Record highest March daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
March
Salmon Gums Res.Stn. 26.2 on the 30th 26.1 on the 6th in 1934 81 12.6
Esperance Aero 26.3 on the 30th 25.1 on the 2nd in 1998 30 14.5
Newdegate Research Station 22.9 on the 30th 21.8 on the 14th in 2015 25 12.7
Southern Cross Airfield 28.1 on the 30th 27.6 on the 14th in 2015 25 15.4
Norseman Aero 25.8 on the 30th 23.3 on the 7th in 2017 22 14.2



Lowest March mean temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
March
Mardie 30.1 29.9 in 2001 31.0



Summary statistics for March 2021
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
March
2021
Diff
from
average
Highest for
March
2021
Mean for
March
2021
Diff
from
average
Lowest for
March
2021
Total for
March
2021
Average
for
March
Rank of
March
2021
Fraction of
March
average
North Kimberley (district 01)
Doongan 32.5 -0.9 37.0 9th 22.2 +0.2 18.0 31st 121.5 190.3 average 64%
Mount Elizabeth 32.2 -0.6 36.6 5th 20.5 -0.1 15.5 31st 433.0 165.6 v high 261%
Troughton Island 32.1 0.0 33.7 30th 26.7 +0.1 23.9 30th 178.0 131.5 high 135%
Truscott 32.2 -0.7 35.2 30th 25.1 -0.2 22.8 20th 284.6 184.8 high 154%
Wyndham Aero 35.3 -1.0 40.2 8th 25.7 0.0 23.4 9th 134.0 140.1 average 96%
East Kimberley (district 02)
Argyle Aerodrome 34.9 -0.9 40.3 5th 24.8 -0.1 22.5 12th 185.8 143.8 high 129%
Halls Creek Airport 33.3   37.7 4th 21.7   17.2 28th 248.2
Kununurra Aero 34.7 -1.1 39.0 3rd 24.2 0.0 20.0 31st 170.6 143.3 average 119%
Warmun 35.1 -0.9 41.0 6th 23.9 +0.7 21.0 20th 170.7 115.9 high 147%
West Kimberley (district 03)
Broome Airport 33.0 -1.0 37.8 29th 24.8 -0.7 20.5 31st 90.0 97.6 average 92%
Curtin Aero 34.8 -1.5 38.1 29th 23.7 -0.5 19.4 20th 169.6 142.7 high 119%
Cygnet Bay 31.9 -1.9 34.5 7th 24.8 +0.1 22.0 9th 306.5 160.9 high 190%
Derby Aero 34.0 -1.4 38.4 29th 24.7 -0.4 20.4 20th 272.2 130.3 high 209%
Fitzroy Crossing Aero 35.2 -2.0 38.5 6th 23.5 -0.5 18.2 31st 209.8 108.1 high 194%
Yampi Sound (Defence) 34.3   37.7 29th 23.8   18.9 31st
De Grey (district 04)
Bedout Island 31.6 -2.1 33.4 29th 26.6 -1.1 23.2 3rd
Karratha Aero 34.5 -1.8 39.5 30th 25.5 -0.5 20.2 21st 28.6 46.7 average 61%
Legendre Island 32.0 -1.9 35.3 30th 26.7 -0.6 24.5 21st
Marble Bar 36.4 -1.9 41.0 10th 23.9 -1.3 18.5 22nd 16.8 78.1 average 22%
Port Hedland Airport 34.9 -1.9 40.1 29th 24.1 -0.5 20.6 22nd 49.2 55.2 average 89%
Roebourne Aero 36.5 -1.4 41.0 30th 24.1 -1.3 18.9 21st 24.2 41.1 average 59%
Fortescue (district 05)
Barrow Island Airport 32.1 -1.4 36.6 29th 26.0 -0.6 22.5 2nd 85.8 54.5 high 157%
Karijini North 35.6   39.7 11th 22.6   17.3 22nd 38.2
Learmonth Airport 34.5 -2.0 40.1 30th 22.7 -0.3 19.6 24th 90.4 40.9 high 221%
Mardie 35.8 -1.8 42.4 30th 24.3 0.0 20.7 21st 25.6 48.7 average 53%
Onslow Airport 35.0 -1.2 42.1 30th 24.5 +0.2 20.8 2nd 87.4 71.0 high 123%
Thevenard Island 32.6 -1.5 36.4 18th 25.7 -0.5 21.6 2nd 13.6 35.0 average 39%
West Gascoyne (district 06)
Carnarvon Airport 32.0 +0.3 37.5 14th 22.6 +0.4 19.3 5th 11.8 16.1 average 73%
Denham 32.0 +0.9 38.9 19th 22.3 +0.2 19.5 4th 0 14.5 lowest 0%
Shark Bay Airport 34.3 +0.1 39.8 31st 21.2 -0.1 18.0 24th 0 17.1 lowest 0%
East Gascoyne (district 07)
Newman Aero 35.6 0.0 38.8 6th 21.4 -0.8 15.6 20th 6.6 40.9 low 16%
Paraburdoo Aero 36.5 -0.5 39.9 8th 22.1 -1.4 18.1 22nd 60.6 48.8 high 124%
Murchison (district 07A)
Meekatharra Airport 35.1 +0.8 39.6 28th 22.2 +0.8 18.5 15th 29.4 29.3 high 100%
Mount Magnet Aero 34.3 +1.0 40.2 29th 21.4 +1.0 17.7 24th 25.8 35.0 average 74%
Paynes Find 33.5 +0.5 40.9 29th 18.7 +0.4 14.1 26th 106.0 26.1 v high 406%
North Coast (district 08)
Dalwallinu 31.6 0.0 40.1 29th 17.2 +0.7 11.0 26th 114.8 27.9 highest 411%
Geraldton Airport 32.9   39.9 19th 18.8   12.9 24th 0.6 16.8 low 4%
Kalbarri 32.9 +0.3 40.0 19th 20.2 +0.9 16.2 26th 0.8 11.9 average 7%
Morawa Airport 33.4 0.0 39.2 9th 18.4 +0.2 12.9 26th 49.2 18.0 high 273%
Mullewa 34.8 +1.1 40.6 29th 19.9 +1.4 14.7 26th 110.7 20.0 v high 554%
North Island 29.0 +0.9 32.9 20th 22.2 +0.3 17.9 5th 1.8 5.7 average 32%
Wongan Hills 31.7 +0.7 40.8 29th 17.0 +0.6 10.7 26th 69.0 20.8 v high 332%
Central Coast (district 09)
Badgingarra Research Stn 32.0 +0.1 39.9 29th 17.7 +1.2 12.4 26th 0 15.8 lowest 0%
Bickley 27.5 -0.4 37.9 29th 16.0 +1.4 9.7 24th 64.2 26.8 high 240%
Garden Island HSF 27.1 +0.1 36.9 19th 18.7 +0.4 12.4 28th 35.2 16.8 high 210%
Gingin Aero 31.2 +0.5 40.9 29th 15.9 +0.5 5.8 26th
Jandakot Aero 29.6 0.0 38.2 29th 16.8 +1.2 8.7 25th 41.6 16.9 v high 246%
Jurien Bay 30.2 +0.7 39.0 19th 18.0 +1.3 11.9 26th 35.8 14.7 high 244%
Karnet     37.3 29th     9.0 24th 65.4 25.3 v high 258%
Lancelin 29.1 +0.6 38.4 19th 17.9 +1.1 12.5 26th 65.0 16.0 v high 406%
Pearce RAAF 31.5 +0.9 41.8 29th 17.2 +1.2 8.3 26th 34.2 16.6 high 206%
Perth Airport 30.4 +0.7 40.7 29th 16.9 +0.9 7.5 25th 30.4 16.4 high 185%
Perth Metro 29.9 +0.3 39.0 29th 17.6 +0.8 11.1 26th 40.6 20.4 high 199%
Rottnest Island 26.8 +0.7 36.0 19th 19.6 +0.9 14.6 24th 25.2 18.7 high 135%
Swanbourne 28.4 -0.4 38.3 19th 18.5 +1.0 12.0 25th 32.6 21.3 high 153%
South Coast (district 09A)
Albany 23.6 +1.4 31.5 16th 16.6 +1.8 12.0 14th 28.9 38.3 average 75%
Albany Airport 26.1   37.2 21st 14.2   7.1 14th 27.0 41.9 average 64%
Bridgetown 27.1 -0.2 36.8 29th 12.4 +0.4 5.0 24th 29.2 22.2 average 132%
Bunbury 27.4 -0.3 35.3 29th 14.7 +0.4 6.9 24th 36.4 20.3 high 179%
Busselton Aero 27.4 -0.4 36.4 29th 14.6 +1.1 7.1 25th 23.6 20.6 average 115%
Cape Leeuwin 23.8 +1.1 27.0 16th 18.2 +1.5 13.5 24th 25.8 28.6 average 90%
Cape Naturaliste 26.1 +1.6 31.3 20th 16.7 +1.6 11.1 13th 34.6 23.1 high 150%
Collie East 27.8 -0.4 37.9 29th 12.5 +0.3 3.8 24th 38.4 19.2 high 200%
Donnybrook 28.4 +0.4 38.4 29th       49.0 25.4 high 193%
Dwellingup 27.3 +0.2 37.7 29th 14.4 +1.4 7.1 24th 58.8 26.7 high 220%
Esperance 27.1 +2.0 41.8 30th 15.8 +0.6 8.3 14th 13.4 29.6 average 45%
Esperance Aero 28.2 +2.2 40.9 30th 15.2 +0.7 8.2 14th 23.2 33.4 average 69%
Hopetoun North 25.7 +1.1 42.2 30th 15.0 +0.8 8.6 15th 25.6 31.8 average 81%
Jarrahwood 27.7 0.0 37.0 29th 13.2 +1.5 5.5 13th 46.4 22.9 high 203%
Mandurah 27.6 -0.2 34.8 9th 18.9 +0.7 12.8 24th 20.4 16.9 average 121%
Manjimup 26.3 +1.5 35.4 21st 14.2 +1.6 8.2 14th 0 29.7 lowest 0%
North Walpole 25.0 +1.2 33.5 21st 15.2 +0.8 11.2 25th 37.6 36.0 average 104%
Rocky Gully 26.3 +1.2 36.0 21st 13.8 +1.3 7.1 13th 32.6 36.7 average 89%
Shannon 26.0 +1.3 36.2 20th 13.6 +1.0 8.4 13th 17.2 33.8 average 51%
Windy Harbour 24.5 +1.1 30.0 20th 14.0 +0.3 9.5 28th 18.6 30.5 average 61%
Witchcliffe 26.1 +0.5 34.8 20th 14.0 +0.8 7.6 25th 38.0 27.8 high 137%
North Central (district 10)
Bencubbin 30.6 -0.2 39.5 30th 17.2 +0.9 11.4 24th 93.5 23.8 v high 393%
Cunderdin Airfield 30.8 -0.2 39.1 30th 15.7 +0.2 8.7 27th 80.2 20.4 v high 393%
Merredin 30.8 +0.5 40.2 29th 17.3 +1.0 11.5 13th 66.8 21.4 v high 312%
Northam 30.8 0.0 41.1 29th 16.3 +0.9 10.6 27th 137.3 19.3 v high 711%
York 30.8 +0.1 42.2 29th 15.2 +0.8 8.5 25th 118.0 21.6 highest 546%
South Central (district 10A)
Beverley 31.2 +0.4 41.6 29th 15.3 +0.6 7.6 25th 69.8 17.0 v high 411%
Brookton 29.9 +0.4 40.5 29th 15.5 +1.1 8.1 24th 63.5 18.5 v high 343%
Hyden 30.2 +0.2 41.8 29th 14.7 +0.4 8.0 26th 50.3 20.9 high 241%
Jacup 27.4 +1.5 40.0 30th 13.7 +1.1 5.5 24th 71.4 31.7 high 225%
Katanning 27.5 +0.5 39.2 29th 14.5 +1.4 6.8 24th 24.0 23.2 average 103%
Lake Grace 28.9 +0.9 40.6 29th 15.4 +1.0 7.7 24th 37.0 20.1 high 184%
Narembeen 30.7 +0.4 39.9 30th 16.2 +1.2 10.2 13th 68.4 21.3 v high 321%
Narrogin 28.3 +0.9 39.5 29th 14.8 +1.7 6.1 24th 34.8 21.3 high 163%
Newdegate Research Station 28.4 +0.4 39.8 29th 14.1 +1.4 6.2 24th 39.6 21.7 high 182%
Pingelly 29.1 +0.6 40.0 30th 15.5 +0.8 7.0 24th 44.6 17.7 high 252%
Ravensthorpe 28.0 +1.4 40.0 30th     9.0 25th 35.8 32.6 average 110%
Wagin 28.3 +0.6 39.1 29th 14.4 +0.9 5.8 24th 17.6 20.7 average 85%
Eucla (district 11)
Balladonia 29.3 +1.2 39.2 31st 13.9 +0.3 7.0 14th 9.3 28.2 average 33%
Eucla 24.9 -0.3 38.0 12th 15.9 -0.1 11.4 25th 12.6 22.7 average 56%
Eyre 27.1 +1.3 38.9 31st 13.2 -1.1 2.3 25th 6.9 26.9 low 26%
Forrest 29.7 +0.4 40.2 12th 14.3 -0.2 8.2 15th 10.0 22.4 average 45%
South East (district 12)
Bulga Downs 34.0 +1.1 39.4 29th 18.7 +0.1 14.3 16th 77.2 26.6 v high 290%
Kalgoorlie-Boulder Airport 30.5 +1.0 38.7 29th 17.4 +1.3 11.0 14th 32.2 25.0 high 129%
Laverton Aero 33.0 +2.3 38.6 29th 19.4 +1.0 12.9 14th 15.6 39.3 average 40%
Leinster Aero 33.5 +1.7 38.7 29th 19.5 +0.3 13.8 15th 40.6 36.2 average 112%
Leonora Aero 33.3 +1.7 39.2 11th 20.2 +1.0 14.5 14th 24.6 42.9 average 57%
Munglinup West 28.3 +1.4 41.0 30th 15.0 +1.1 8.6 14th 33.2 32.9 average 101%
Norseman Aero 29.8 +1.1 39.4 31st 14.8 +0.6 4.9 24th 28.6 31.0 average 92%
Salmon Gums Res.Stn. 28.8 +1.5 40.0 30th 13.3 +0.7 3.0 14th 31.6 26.5 high 119%
Southern Cross Airfield 30.6 +0.1 39.7 29th 16.5 +1.1 10.0 24th 64.2 36.1 high 178%
North East (district 13)
Carnegie 37.0 +2.6 41.6 12th 20.3 0.0 12.5 15th 7.4 31.6 average 23%
Giles Meteorological Office 32.4 -1.5 40.6 4th 19.5 -1.2 12.0 16th 44.4 34.9 high 127%
Telfer Aero 35.1 -2.5 40.4 7th 23.9 -0.3 17.0 19th 69.4 69.4 average 100%
Warburton Airfield 34.5 +0.2 42.7 4th 21.0 +0.8 14.4 15th 14.2 29.1 average 49%
Wiluna Aero 35.1   38.8 28th 20.4   14.7 18th 15.8
Offshore Islands (district 200)
Adele Island 30.8   32.8 31st     21.0 9th
Rowley Shoals 29.7   31.4 11th 27.1   23.6 3rd
Varanus Island 31.5 -1.3 36.1 30th 26.6 -0.5 22.3 2nd 66.8 43.7 high 153%

Notes

The Monthly climate summary, generally published on the first working day of each month, lists the main features of the weather in Western Australia 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 Thursday 1 April 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