Thursday, 1 July 2021 - Monthly Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in June 2021: a cold spell in late June

Mean maximum temperatures were below average for western half of Western Australia, although the state's far north saw above average maximum temperatures. It was the lowest mean maximum temperature for 28 years for Western Australia as a whole. Mean minimum temperatures were below average in the west from the Gascoyne to the northern parts of the South West Land Division (SWLD), while the north-west and south coastal parts of the state recorded above average mean minima. Rainfall was below average along the west coast and further inland, while above average rainfall was observed in parts of the north and south coast of the state.

Below average rainfall in the west

  • Rainfall was 32 % below average for Western Australia as a whole, although it was wetter than June 2020.
  • A cloudband moved across the west and central and south-eastern WA, and an associated cut-off low pressure system tracked across the state's far south-west, from the 9th to the 10th, to produce moderate daily rainfall totals in the west Pilbara, Gascoyne and the SWLD.
  • Exmouth Town in the west Pilbara coast recorded daily rainfall of 173.4 mm on the 10th, which was the state's highest June daily rainfall for 8 years since 25 June 2013 when daily rainfall totals of 180–220 mm were recorded in Roebourne and Karratha.
  • A strong cold front and associated low pressure system moved across the south-west of WA on the 20th and 21st, to bring widespread moderate rainfall to most of the SWLD; several SWLD coastal sites recorded their highest June daily rainfall on record, including a heavy downpour of 106 mm at Denmark on the 21st.
  • A number of sites in the South Coastal and South East Coastal districts had their wettest June rainfall for over 30 years.

Cold days and nights in the south-west WA

  • The mean maximum temperature was 0.66 °C below average, and the lowest maximum temperature since 1993 for Western Australia.
  • The mean minimum temperature was near average (-0.09 °C) for Western Australia; it was warmer in June 2020 but cooler in June 2019 for WA.
  • The mean temperature (average of maximum and minimum temperatures) was 0.37 °C below average for Western Australia, which was the coldest June for 10 years.
  • Most of WA observed cold days between the 21st and 25th, with maximum temperatures below 20 °C in the Pilbara, and down to 10 °C or below in the Central Wheat Belt, Great Southern and South East Coastal districts on the 21st; several sites had their coldest June day on record. on the 21st or the 22nd.
  • Several sites along the Pilbara coast and offshore islands had their coldest June days on record or coldest June days for at least 20 years
  • Most of WA observed cold nights between the 22nd and 26th, with sub-zero temperatures to –3 °C recorded in the Central Wheat Belt and Great Southern districts on the 25th and 26th; a number of sites in the Pilbara had their lowest June temperature on record.
  • Many sites in the west of the state had their coldest June (lowest June mean temperature) for at least 20 years; Carnarvon Airport had its coldest June for 39 years while Northam, Bencubbin and Perth Airport had their coldest June for 31 years.

Major flooding at Exmouth

  • A cloudband over the north-west of WA produced very heavy daily rainfall of 173.4 mm at Exmouth on the 10th, causing major flooding to the town.
  • Busselton recorded a high tide of 1.9 m with a residual of 68 cm Perth Barrack Street gauge recorded a high tide of 1.75 m with flash flooding along Riverside Drive.

Heavy rainfall, damaging winds and flooding between Denmark and Albany

  • A low pressure system moved along the south coast and produced thunderstorms and heavy daily falls in excess of 50 mm in the SWLD, and up to 106 mm at Denmark in the South Coastal District on the 21st.
  • Extensive flash flooding was reported between Denmark and Albany, with main roads closed for 2 days for repairs, and more than 10 thousands customers were without power for extended periods.
  • Denmark River at Denmark College recorded a peak of about 3.5 m around midnight on the 20th.
  • Damaging wind gusts in excess of 90 km/h were recorded at Albany Airport (96 km/h on the 20th) and Rottnest Island (106 km/h on the 21st).
  • DFES received around 200 calls for assistance, with majority of them from Perth and South Coastal District.

Further information

Media
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Extremes Maps Records Summaries Important notes the top

Extremes in June 2021
Hottest day 35.4 °C at Wyndham Aero on the 2nd
35.4 °C at Wyndham Aero on the 3rd
35.4 °C at Wyndham Aero on the 15th
Warmest days on average 32.9 °C at Kalumburu
Coolest days on average 14.6 °C at Katanning
Coldest day 8.7 °C at Jacup on the 21st
Coldest night -3.7 °C at Eyre on the 27th
Coolest nights on average 3.7 °C at Wandering
Warmest nights on average 24.6 °C at Troughton Island
Warmest night 26.1 °C at Troughton Island on the 4th
Warmest on average overall 27.2 °C at Troughton Island
Coolest on average overall 9.9 °C at Wandering
Wettest overall 277.4 mm at Wereroa
Wettest day 173.4 mm at Exmouth Town on the 10th
Strongest wind gust 106 km/h at Cape Leeuwin on the 14th
106 km/h at Rottnest Island on the 21st

Extremes Maps Records Summaries Important notes the top

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 June daily rainfall
New record
(mm)		 Old
record		 Years of
record
Denmark 106.0 on the 21st 91.7 on the 1st in 1928 111
Northcliffe 68.8 on the 21st =68.8 on the 6th in 1936 97
Wereroa 166.2 on the 21st 78.0 on the 25th in 1988 62
Lort River 32.0 on the 1st 27.6 on the 24th in 2019 53
Kimberley 95.0 on the 21st 88.2 on the 1st in 2012 49
Little Chorkerup 91.0 on the 21st 82.0 on the 25th in 1988 47
Nalyerlup 63.0 on the 21st 41.0 on the 2nd in 2012 38
Rottnest Island 61.2 on the 20th 51.0 on the 14th in 2000 31
Nunile 26.0 on the 21st =26.0 on the 4th in 2005 30
Strawberry 43.0 on the 21st 37.0 on the 18th in 1998 27
Norseman Aero 29.8 on the 12th 17.0 on the 15th in 2016 22
Mandurah 52.6 on the 20th 48.0 on the 4th in 2002 20
Tabletop 36.2 on the 21st 33.8 on the 29th in 2011 20


Record highest June total rainfall
New record
(mm)		 Old
record		 Years of
record		 Average for
June
Nalyerlup 107.2 96.8 in 2012 38 47.6
Hill Plains 71.8 59.8 in 1995 26 38.3

Highest June total rainfall for at least 20 years
Observed
(mm)		 Most recent
higher		 Average for
June
Gorya Valley 63.4 68.6 in 1980* 35.3
Wereroa 277.4 287.2 in 1988 153.5
Salmon Gums Res.Stn. 69.6 74.0 in 1989 38.2
Telina Downs 112.2 132.6 in 1989* 63.5

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



Record lowest June daily maximum temperature
New record
(°C)		 Old
record		 Years of
record		 Average for
June
Merredin 10.0 on the 21st = 10.0 on the 22nd in 1981 56 17.5
Narembeen 10.0 on the 21st = 10.0 on the 20th in 1966 50 17.6
Paynes Find 11.2 on the 21st 11.9 on the 18th in 1986 42 19.4
Jacup 8.7 on the 21st 10.6 on the 29th in 1998 28 16.9
Newdegate Research Station 9.0 on the 21st 10.7 on the 29th in 1998 26 16.8
Lake Grace 9.4 on the 21st 11.0 on the 29th in 1998 25 17.1
Southern Cross Airfield 10.7 on the 21st 11.4 on the 7th in 2019 25 18.1
Katanning 9.8 on the 21st 10.0 on the 12th in 2005 23 16.2
Varanus Island 19.7 on the 22nd 20.0 on the 2nd in 2013 23 24.9
Barrow Island Airport 19.1 on the 24th 19.7 on the 2nd in 2013 22 24.3
Shark Bay Airport 17.8 on the 22nd = 17.8 on the 7th in 2019 21 24.0
Munglinup West 10.4 on the 22nd 10.6 on the 21st in 2009 20 17.8
Roebourne Aero 17.7 on the 21st 18.5 on the 6th in 2012 20 28.1


Record lowest June mean daily maximum temperature
New record
(°C)		 Old
record		 Years of
record		 Average for
June
Learmonth Airport 23.1 = 23.1 in 1980 46 24.9
Newdegate Research Station 14.8 14.9 in 2005 25 16.8
Paraburdoo Aero 22.9 = 22.9 in 2013 25 25.2
Dalwallinu 16.1 16.4 in 1998 24 18.7
Lake Grace 15.2 = 15.2 in 2016 24 17.1
Thevenard Island 23.7 23.9 in 2005 23 25.5
Barrow Island Airport 22.8 23.2 in 2000 21 24.3
Shark Bay Airport 21.9 22.0 in 2005 20 24.0

Lowest June mean daily maximum temperature for at least 20 years
Observed
(°C)		 Most recent
lower		 Average for
June
Mardie 26.1 26.0 in 1971 28.2
Bencubbin 15.9 14.7 in 1981* 17.5
Jurien Bay 19.6 19.1 in 1993 20.7
Northam 17.1 16.9 in 1993 18.0
Emu Creek Station 24.3 24.2 in 1992* 26.0
Narembeen 16.2 15.3 in 1995 17.6
Wongan Hills 16.8 16.4 in 1995 18.3
Leinster Aero 17.6 17.0 in 1996 19.4
Onslow Airport 24.5 23.8 in 1998 26.1
Varanus Island 23.4 23.0 in 2000 24.9

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



Record highest June daily minimum temperature
New record
(°C)		 Old
record		 Years of
record		 Average for
June
Emu Creek Station 22.4 on the 8th 22.2 on the 10th in 2012 47 12.7


Record lowest June temperature
New record
(°C)		 Old
record		 Years of
record		 Average for
June
Thevenard Island 11.8 on the 26th 11.9 on the 24th in 2006 27 18.6
Barrow Island Airport 12.8 on the 25th 13.3 on the 16th in 2009 22 18.8
Marble Bar 6.0 on the 24th = 6.0 on the 16th in 2011 21 13.2
Shark Bay Airport 4.5 on the 26th 4.8 on the 30th in 2017 21 11.7


Lowest June mean daily minimum temperature for at least 20 years
Observed
(°C)		 Most recent
lower		 Average for
June
Meekatharra Airport 7.6 =7.6 in 2001 8.8
Mullewa 7.4 5.5 in 2001 8.6


Record lowest June mean temperature
New record
(°C)		 Old
record		 Years of
record		 Average for
June
Leinster Aero 11.9 12.0 in 2006 26 13.3
Gingin Aero 11.7 11.9 in 2001 25 13.5
Mount Magnet Aero 12.7 13.2 in 2016 25 14.2
Dalwallinu 11.1 11.7 in 2016 24 13.0
Lake Grace 10.8 = 10.8 in 2016 24 11.8
Thevenard Island 20.6 20.8 in 2006 23 22.1
Shark Bay Airport 16.4 16.7 in 2016 20 17.9

Lowest June mean temperature for at least 20 years
Observed
(°C)		 Most recent
lower		 Average for
June
Carnarvon Airport 16.7 16.3 in 1982 17.9
Brookton 10.4 9.8 in 1990 11.4
Northam 10.9 10.7 in 1990 12.2
Perth Airport 12.9 12.0 in 1990 14.0
Wongan Hills 11.2 =11.2 in 1990 13.0
Bencubbin 11.0 10.6 in 1990* 12.4
Murchison 13.4 13.2 in 1993* 14.7
Karnet 11.2 11.0 in 1995 11.9
Merredin 10.9 =10.9 in 1995 12.1
Pearce RAAF 12.9 12.7 in 1995 14.2
Perth Metro 12.9 12.6 in 1995 14.1
Swanbourne 13.9 13.8 in 1995 15.1
Mullewa 13.6 13.4 in 1995* 14.3
Narrogin 10.2 =10.2 in 1995* 11.0
Learmonth Airport 17.8 17.1 in 2000 19.0
Onslow Airport 19.6 19.3 in 2000 20.2

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



Extremes Maps Records Summaries Important notes the top

Summary statistics for June 2021
Maximum temperatures
(°C)		 Minimum temperatures
(°C)		 Rainfall
(millimetres)
Mean for
June
2021		 Diff
from
average		 Highest for
June
2021		 Mean for
June
2021		 Diff
from
average		 Lowest for
June
2021		 Total for
June
2021		 Average
for
June		 Rank of
June
2021		 Fraction of
June
average
North Kimberley (district 01)
Doongan 30.3 +1.0 33.3 15th 14.2 +2.6 8.0 13th 0.4 4.1 high 10%
Kalumburu 32.9 +1.1 35.2 3rd 16.4 +2.0 8.7 12th 0 2.2 lowest 0%
Mount Elizabeth 29.8 +1.4 32.6 2nd 10.5 +1.5 5.2 13th 9.0 10.9 high 83%
Troughton Island 29.9 +0.8 31.4 18th 24.6 +1.2 22.4 14th 0 5.7 lowest 0%
Truscott 31.1 +0.7 33.7 4th 19.7 +0.6 15.1 12th 0 2.5 v low 0%
Wyndham Aero 32.5 +1.0 35.4 15th 17.2 +1.3 10.2 12th 0 3.0 lowest 0%
East Kimberley (district 02)
Argyle Aerodrome 30.3 +0.8 34.1 2nd 17.0 +0.8 12.2 11th 0 3.6 lowest 0%
Halls Creek Airport 27.3   31.6 13th 12.3   6.1 12th 0.4
Kununurra Aero 31.1 +0.6 34.6 2nd 15.3 -0.4 8.3 12th 0 3.0 lowest 0%
Warmun 30.0 +0.4 33.7 14th     10.8 21st 0.6 5.8 average 10%
West Kimberley (district 03)
Bidyadanga 29.7 -0.2 32.5 7th 16.6 +1.1 8.5 24th 30.8 19.2 high 160%
Broome Airport 29.0 -0.3 31.9 7th 17.8 +2.6 11.3 25th 18.4 18.2 high 101%
Curtin Aero 30.1 -0.8 33.3 30th 18.0 +1.4 11.5 24th 4.6 6.9 high 67%
Cygnet Bay 28.0 -0.7 31.0 6th 19.3 +2.7 13.5 12th 8.2 19.1 average 43%
Derby Aero 30.5 -0.2 32.9 30th 17.6 +1.9 11.0 24th 5.8 7.6 high 76%
Fitzroy Crossing Aero 30.3 -0.3 33.6 30th 15.1 +2.1 8.9 25th 2.2 6.5 high 34%
Yampi Sound (Defence) 32.0   34.7 30th 15.3   10.2 9th
De Grey (district 04)
Bedout Island 24.5 -1.2 29.5 12th 20.4 -0.5 15.9 24th
Karratha Aero 25.1 -1.5 29.9 30th 16.0 +0.8 8.2 24th 15.2 34.6 average 44%
Legendre Island 23.9 -1.4 27.1 13th 19.5 0.0 15.1 23rd
Mandora 28.3 -0.8 33.0 7th 16.0 +1.9 8.4 23rd 51.6 17.1 v high 302%
Marble Bar 25.5 -1.6 31.1 11th 14.6 +1.4 6.0 24th 36.0 23.0 high 157%
Port Hedland Airport 26.5 -1.2 31.9 7th 15.9 +1.7 6.9 24th 25.2 23.1 high 109%
Roebourne Aero 25.7 -2.4 30.2 30th 15.2 +1.7 7.4 23rd 11.0 30.0 average 37%
Fortescue (district 05)
Barrow Island Airport 22.8 -1.5 25.0 7th 18.6 -0.2 12.8 25th 30.6 34.2 average 89%
Karijini North 23.1   28.6 11th 13.2   6.3 23rd 16.4
Learmonth Airport 23.1 -1.8 26.7 7th 12.5 -0.6 5.2 25th 51.8 43.1 high 120%
Mardie 26.1 -2.1 30.7 30th 14.1 +0.1 6.0 23rd 11.8 36.9 average 32%
Onslow Airport 24.5 -1.6 29.4 30th 14.7 +0.3 8.3 23rd 13.2 45.4 average 29%
Thevenard Island 23.7 -1.8 27.1 7th 17.5 -1.1 11.8 26th 10.8 35.9 average 30%
West Gascoyne (district 06)
Carnarvon Airport 23.0 -0.5 27.1 6th 10.4 -1.9 5.3 23rd 30.2 46.0 average 66%
Denham 21.6 -1.4 25.0 5th     11.0 4th 18.7 54.1 low 35%
Emu Creek Station 24.3 -1.7 29.0 7th 12.0 -0.7 5.0 23rd 9.6 36.3 low 26%
Murchison 20.0 -1.9 24.1 6th 6.6 -1.0 0.8 25th 10.1 28.5 low 35%
Shark Bay Airport 21.9 -2.1 26.6 6th 10.8 -0.9 4.5 26th 14.8 43.9 low 34%
East Gascoyne (district 07)
Newman Aero 21.1 -2.0 28.5 11th 7.7 +0.2 0.5 25th 5.6 15.7 average 36%
Paraburdoo Aero 22.9 -2.3 27.6 7th 10.9 -0.4 3.4 22nd 9.4 22.8 average 41%
Murchison (district 07A)
Meekatharra Airport 18.7 -1.1 24.4 6th 7.6 -1.2 1.3 24th 2.4 28.9 low 8%
Mount Magnet Aero 18.2 -1.8 24.0 6th 7.3 -1.0 2.5 24th 18.4 21.4 average 86%
Paynes Find 17.9 -1.5 21.5 5th 5.6 -1.0 -0.7 26th 38.4 40.1 average 96%
North Coast (district 08)
Dalwallinu 16.1 -2.6 20.1 11th 6.1 -1.1 1.3 26th 33.6 34.5 average 97%
Geraldton Airport 20.1   23.4 5th 9.2   4.2 24th 56.8
Kalbarri 22.3 -0.7 26.1 5th 9.8 -1.3 3.6 24th 42.6 77.3 low 55%
Morawa Airport 18.3 -1.9 22.4 5th 6.8 -0.7 1.6 24th 32.2 40.4 average 80%
Mullewa 19.5 -0.6 22.8 5th 7.4 -1.2 3.6 20th 15.3 62.6 v low 24%
North Island 21.5 -0.9 24.0 6th 15.8 -0.8 7.9 20th 86.4 62.9 high 137%
Wongan Hills 16.8 -1.5 21.0 7th 5.6 -2.1 1.7 26th 32.8 69.0 low 48%
Central Coast (district 09)
Badgingarra Research Stn 17.3 -1.5 21.0 6th 7.9 -0.6 4.9 24th 63.8 97.1 average 66%
Bickley 15.5 -0.7 18.5 5th 7.7 -0.5 3.6 22nd 126.4 196.7 low 64%
Garden Island HSF 18.3 -0.8 21.3 6th 11.2 -1.0 7.7 19th 125.6 110.7 average 113%
Gingin Aero 18.4 -1.3 21.8 6th 5.0 -2.3 -2.4 26th 113.4 109.3 average 104%
Jandakot Aero 18.6 -0.6 21.2 3rd 5.8 -1.8 0.1 22nd 95.2 151.2 low 63%
Jurien Bay 19.6 -1.1 22.5 6th 8.3 -2.0 3.0 7th 125.0 105.1 high 119%
Karnet 16.3 -0.2 19.2 5th 6.2 -1.1 1.1 23rd 119.9 208.0 low 58%
Millendon (Swan Valley) 18.7   22.2 5th 6.3   0.4 26th 85.8
Pearce RAAF 18.5 -0.5 21.7 5th 7.3 -2.1 1.4 22nd 86.0 130.0 low 66%
Perth Airport 18.8 -0.2 22.4 5th 7.1 -1.9 0.5 22nd 98.0 154.4 low 63%
Perth Metro 18.7 -0.8 21.8 5th 7.2 -1.4 1.1 26th 93.6 126.2 low 74%
Rottnest Island 18.2 -0.6 21.2 6th 13.0 -0.4 8.6 21st 118.4 98.3 average 120%
Swanbourne 18.4 -1.1 20.8 3rd 9.4 -1.3 5.1 22nd 115.6 125.8 average 92%
South Coast (district 09A)
Albany 17.5 +0.8 22.0 10th 10.6 +1.5 5.8 18th 133.5 131.0 average 102%
Albany Airport 17.1   21.8 10th 9.2   4.0 18th 153.8
Bridgetown 16.4 -0.4 20.1 5th 5.4 +0.2 -1.3 18th 105.0 106.6 average 98%
Bunbury 18.0 -0.6 20.9 5th 7.1 -0.9 0.7 24th 101.0 135.5 average 75%
Busselton Aero 17.5 -0.4 20.2 5th 7.9 +0.2 2.6 17th 78.2 123.6 low 63%
Cape Leeuwin 18.0 +0.6 20.5 2nd 12.8 +0.6 9.2 21st 172.2 174.0 average 99%
Cape Naturaliste 18.1 +0.7 21.2 4th 11.7 +0.2 7.0 21st 123.4 160.5 average 77%
Collie East 16.9 -0.5 20.1 12th 4.3 -0.1 -0.8 18th 100.8 107.2 average 94%
Donnybrook 17.6 +0.1 21.2 3rd       93.7 186.3 low 50%
Dwellingup 16.3 +0.2 19.3 5th 5.4 -1.1 0.1 26th 109.8 233.7 v low 47%
Esperance 17.5 -0.6 21.4 6th 9.9 +0.7 5.3 25th 89.8 77.2 average 116%
Esperance Aero 16.2 -1.3 20.2 6th 8.9 +0.4 4.6 30th 92.8 66.1 high 140%
Hopetoun North 17.6 -1.5 21.4 5th 9.9 +1.3 5.2 18th 56.6 47.7 average 119%
Jarrahwood 17.3 0.0 21.0 5th 6.1 +0.8 -0.4 18th 105.2 155.9 low 67%
Mandurah 17.9 -0.8 20.8 10th 10.7 -0.9 6.7 22nd 107.6 117.2 average 92%
Manjimup 15.5 +0.1 18.8 3rd 7.7 +0.2 4.1 17th 100.4 160.5 low 63%
North Walpole 16.9 -0.2 20.2 5th 10.0 +0.1 6.8 18th 182.8 161.0 high 114%
Rocky Gully 15.4 -0.4 19.3 5th 7.5 -0.2 3.4 17th 100.6 88.3 average 114%
Shannon 15.2 -0.5 18.7 5th 8.2 +0.5 3.5 18th 136.6 143.3 average 95%
Windy Harbour 17.7 -0.1 21.0 4th 10.5 +1.0 4.8 18th 163.8 169.1 average 97%
Witchcliffe 17.3 -0.2 20.3 5th 9.2 +0.3 4.4 17th 245.2 179.7 high 136%
North Central (district 10)
Bencubbin 15.9 -1.6 20.0 6th 6.2 -1.0 0.5 25th 16.2 47.7 low 34%
Cunderdin Airfield 17.1 -1.5 21.1 6th 4.6 -1.4 -0.4 25th 31.8 36.5 average 87%
Merredin 16.3 -1.2 20.5 6th 5.5 -1.3 -1.0 26th 22.3 48.4 low 46%
Northam 17.1 -0.9 21.5 6th 4.7 -1.7 -1.1 26th 30.4 77.8 low 39%
York 17.2 -1.4 19.6 6th 4.2 -0.5 -1.0 26th 41.1 58.7 average 70%
South Central (district 10A)
Beverley 17.1 -1.0 20.6 3rd 4.6 -1.4 -1.0 26th 26.4 76.5 v low 35%
Brookton 16.3 -1.0 19.5 3rd 4.2 -1.3 -1.2 26th 27.5 83.2 v low 33%
Hyden 16.2 -1.3 20.0 7th 4.9 -0.7 -1.0 25th 40.3 48.1 average 84%
Jacup 15.5 -1.4 19.1 5th 6.9 +0.3 3.7 18th 87.0 43.1 v high 202%
Katanning 14.6 -1.6 18.9 10th 7.1 +0.2 3.0 25th 26.8 55.1 low 49%
Lake Grace 15.2 -1.9 18.6 5th 6.4 0.0 1.3 25th 37.4 32.1 high 117%
Narembeen 16.2 -1.4 20.2 6th 6.0 -0.4 0.6 25th 54.0 50.6 average 107%
Narrogin 15.5 -0.1 19.4 10th 5.1 -1.2 -0.1 25th 25.0 84.7 v low 30%
Newdegate Research Station 14.8 -2.0 17.9 6th 6.0 +0.9 -0.1 25th 35.4 48.3 average 73%
Pingelly 16.0 -0.5 19.0 5th 5.4 -1.1 0.9 25th 31.4 80.7 low 39%
Ravensthorpe 16.0 -1.4 20.5 3rd 7.9 0.0 4.0 18th 63.3 43.3 high 146%
Wagin 15.9 -0.6 20.2 10th 6.5 +0.2 1.1 25th 29.4 70.9 low 41%
Wandering 16.0 -1.1 19.9 10th 3.7 -1.0 -1.9 26th 56.8 80.2 low 71%
Eucla (district 11)
Eucla 18.3 -0.4 25.0 6th 8.7 +0.5 2.4 20th 58.2 30.3 high 192%
Eyre 19.4 +0.3 24.2 6th 7.0 +0.3 -3.7 27th 67.2 39.4 high 171%
Forrest 18.2 -1.0 24.6 6th 6.3 +0.4 0.9 20th 19.4 14.9 high 130%
South East (district 12)
Bulga Downs 18.1 -1.9 24.4 6th 5.0 -1.3 0.0 26th 8.6 26.5 low 32%
Kalgoorlie-Boulder Airport 16.6 -1.0 22.2 6th 6.3 0.0 0.1 26th 29.2 27.1 average 108%
Laverton Aero 17.3 -1.3 23.0 6th 6.3 -0.7 2.0 25th 6.8 14.3 low 48%
Leinster Aero 17.6 -1.8 23.4 6th 6.2 -1.1 1.4 25th 0.6 14.1 v low 4%
Leonora Aero 17.7 -1.8 23.3 6th 6.1 -1.1 -0.1 25th 3.2 13.3 v low 24%
Munglinup West 16.2 -1.6 20.0 6th 7.6 -0.1 4.2 25th 65.4 38.7 high 169%
Norseman Aero 16.3 -1.8 20.3 6th 5.9 +1.1 -0.8 26th 52.6 18.6 v high 283%
Salmon Gums Res.Stn. 15.9 -1.1 19.8 6th 6.7 +1.1 0.1 18th 69.6 38.2 v high 182%
Southern Cross Airfield 16.6 -1.5 20.6 10th 4.7 +0.1 -3.0 26th 12.4 26.7 low 46%
North East (district 13)
Carnegie 21.0 -0.3 27.1 11th     0.1 27th 3.2 14.8 average 22%
Giles Meteorological Office 19.1 -1.2 25.9 12th 6.4 -1.6 1.8 25th 0 17.5 lowest 0%
Warburton Airfield 19.4 -1.3 26.7 12th 5.5 -1.1 -0.7 16th 18.6 17.7 average 105%
Wiluna Aero 18.9   24.6 6th 5.4   -0.2 23rd 1.2
Offshore Islands (district 200)
Adele Island 28.7   30.1 8th 24.5   21.5 23rd
Rowley Shoals 26.5   28.9 13th 24.0   19.9 25th
Varanus Island 23.4 -1.5 26.6 10th 20.0 -1.0 16.2 22nd 16.6 26.2 average 63%

Extremes Maps Records Summaries Important notes the top

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 July 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

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