Western Australia in summer 2018-19: record hot days; a very dry summer

Summer 2018-19 was record hot and very dry for Western Australia. Daytime temperatures were above average for most of the State away from some coastal areas. For the State as a whole, the mean maximum temperature was the highest on record for summer. Overnight temperatures were above average for two-third of the States except for the western and southern parts. The mean minimum temperature for WA ranked the third-highest on record. Rainfall was below average for most of the State. It was the fifth-driest summer on record, and driest summer since 2004-05 for WA.

Below average rainfall for the north, west and coastal southeast

Above average temperature for most of WA

  • For Western Australia, the mean maximum temperature was 2.52 °C above average, which was the highest on record, exceeding the previous record of 1.99 °C set on summer 2009-10
  • The mean minimum temperature was 0.93 °C above average, which was the third-highest on record and highest since summer 2009-10
  • Prolong extreme heat was experienced in the north in December and expanded to the south in mid-January, resulted in some summer daily maximum temperature records been broken
  • Marble Bar recorded 32 days with temperature at 45 °C or higher during summer, which exceeded previous record of 30 such hot days set in summer 1909-10; whilst its 49.3 °C on 27 December was the highest summer temperature in WA for seven years (previous higher temperature was 49.4 °C at Osbourne on 21 December 2011)
  • A number of locations in the Pillara, Kimberley, Goldfields and Southern Interior had their hottest summer on record or hottest summer since 1991 in terms of maximum temperature
  • Several locations in the Kimberley, Pillara,Gascone and Great Southern had their highest summer daily minimum temperature on record; Teller in the east Pilbara had its all-time warmest night on record with 33.7°C on Christmas day

Tropical cyclone Riley

  • A tropical low was first identified on 22 January to the north of the Kimberley, and was later named Tropical Cyclone Riley early on the 24th when located to the northwest of Broome. Riley remained offshore during its life span and had minimal impacts on the northwest coastal communities except bringing moderate to heavy falls to the Kimberley and Pilbara

Further information

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Extremes in summer 2018-19
Hottest day 49.3 °C at Marble Bar on 27 Dec 2018
Warmest days on average 43.7 °C at Marble Bar
Coolest days on average 21.8 °C at Albany
Coldest day 16.2 °C at Manjimup on 24 Jan 2019
Coldest night 1.2 °C at Eyre on 15 Dec 2018
Coolest nights on average 11.6 °C at Jarrahwood
Warmest nights on average 27.7 °C at Telfer Aero
Warmest night 34.2 °C at Wittenoom on 17 Feb 2019
Warmest on average overall 35.5 °C at Telfer Aero
Coolest on average overall 18.1 °C at North Walpole
Wettest overall 554.7 mm at Kachana
Wettest day 132.0 mm at Troughton Island on 23 Jan 2019
Strongest wind gust 141 km/h at Leonora Aero on 9 Dec 2018

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
Witchcliffe 43.8 on 23 Jan 2019 27.8 on 3 Jan 2007 21



Record lowest summer total rainfall
New record
(mm)
Old
record
Years of
record
Average for
summer
Dalyup Park 5.4 5.6 in 1993 85 67.6
Bulyee 0.0 0.8 in 1974 79 42.5
Meekatharra Airport 3.2 4.2 in 2009 74 80.6
Newdegate Research Station 1.0 2.3 in 1973 65 56.9
Mount Barnett 343.8 357.7 in 1991 51 591.9
Telfer Aero 30.8 36.8 in 1988 45 210.4
Kilto Station 208.2 221.8 in 1969 35 571.7
Doongan 174.4 441.3 in 1991 31 774.0
Murchison 1.4 7.6 in 1987 30 66.0
Drysdale River Station 361.4 390.0 in 2004 28 721.6
Jacup 5.0 17.4 in 1997 25 80.6
Hopetoun North 8.0 10.2 in 1997 23 88.6
Fitzroy Crossing Aero 137.2 173.2 in 2006 22 459.3
Dalwallinu 0.6 5.2 in 2004 20 48.3

Lowest summer total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
summer
Jerramungup 14.8 7.6 in 1968* 69.4
Mount Hart Station 309.6 210.8 in 1934* 699.8
Mundrabilla Station 10.6 7.0 in 1969* 55.5
Dalgety Downs 3.6 3.3 in 1955* 81.3
Carnegie 28.7 18.0 in 1990 115.9
Neds Creek 22.2 0.0 in 1990 102.7
Broome Airport 180.8 54.4 in 1991 434.6
Bidyadanga 64.8 32.4 in 1991* 325.2
Barrett Meadows 37.6 27.2 in 1994 90.2
Theda 517.1 471.3 in 1991* 803.7
Napier Downs 377.3 334.9 in 1995 550.6
Wubin 3.0 0.0 in 1986* 38.9
Lake Grace 1.4 1.2 in 1997 73.9
Mount Amhurst 186.4 128.1 in 1971* 328.9
Pleasant Valley 18.6 6.0 in 1997 74.8
Warra Jarra 16.6 11.6 in 1993* 75.3
York 0.5 0.0 in 1997 62.4
Amery Acres 4.0 3.9 in 1992* 41.3
Cunderdin Airfield 2.8 0.0 in 1997* 47.4
Doolgunna 14.6 7.0 in 1997* 95.5
Ellenbrae 274.2 221.8 in 1991* 600.0
Gibb River 345.6 150.0 in 1997* 510.6
Mallina 2.4 2.3 in 1991* 166.4
Mount Magnet Aero 5.8 0.0 in 1997* 81.2
Quairading 2.8 0.2 in 1997* 44.5

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




Record highest summer temperature
New record
(°C)
Old
record
Years of
record
Average for
summer
Wittenoom 47.8 on 27 Dec 2018 47.6 on 2 Jan 1998 67 39.0
Derby Aero 45.6 on 21 Dec 2018 44.9 on 1 Dec 2011 34 35.6
Eyre 48.5 on 2 Jan 2019 47.7 on 2 Jan 2013 33 26.3
Carnegie 47.8 on 15 Jan 2019 47.7 on 8 Jan 2013 31 37.6
Doongan 41.9 on 7 Dec 2018 40.5 on 27 Dec 1992 31 33.4
Curtin Aero 46.7 on 21 Dec 2018 45.7 on 15 Dec 2004 28 36.7
Argyle Aerodrome 45.1 on 12 Dec 2018 44.7 on 6 Dec 2009 25 36.4
Fitzroy Crossing Aero 46.7 on 25 Dec 2018 45.7 on 9 Dec 2009 22 37.8
Kalumburu 42.6 on 20 Dec 2018 40.3 on 6 Dec 2009 21 34.2
Norseman Aero 46.5 on 13 Jan 2019 45.6 on 28 Jan 2011 20 31.6



Record highest summer mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
summer
Eucla 28.2 = 28.2 in 2009 93 25.5
Wittenoom 42.4 42.2 in 1997 65 39.0
Giles Meteorological Office 39.3 38.9 in 1990 62 36.4
Telfer Aero 43.2 42.2 in 2004 44 39.7
Warburton Airfield 39.5 39.3 in 2014 43 37.0
Doongan 35.5 35.1 in 1991 28 33.4
Carnegie 40.6 = 40.6 in 1990 27 37.6
Forrest 34.4 34.1 in 2006 25 32.2
Leinster Aero 38.9 38.8 in 1997 24 36.0
Newman Aero 41.9 41.7 in 1997 22 38.4
Fitzroy Crossing Aero 41.2 40.7 in 2004 21 37.8

Highest summer mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
summer
Kununurra Aero 38.1 38.7 in 1991 36.0
Meekatharra Airport 40.4 40.5 in 1997 37.2
Paraburdoo Aero 43.1 43.3 in 1997 39.9
Wiluna 40.0 40.1 in 1997* 37.1

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




Record highest summer daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
summer
Meekatharra Airport 33.0 on 15 Jan 2019 32.9 on 3 Jan 2004 69 23.4
Hyden 26.5 on 13 Jan 2019 = 26.5 on 2 Feb 2012 47 15.1
Telfer Aero 33.7 on 25 Dec 2018 33.4 on 4 Jan 2016 45 25.6
Doongan 31.1 on 21 Dec 2018 28.9 on 2 Feb 1991 31 22.8
Argyle Aerodrome 33.2 on 12 Dec 2018 31.8 on 4 Dec 2007 25 25.6
Kalumburu 29.3 on 13 Dec 2018 = 29.3 on 3 Dec 2007 21 24.6



Record lowest summer temperature
New record
(°C)
Old
record
Years of
record
Average for
summer
Varanus Island 20.9 on 17 Dec 2018 21.3 on 10 Dec 2008 20 25.9



Record highest summer mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
summer
Telfer Aero 27.7 27.4 in 1990 43 25.6
Doongan 23.9 23.4 in 2009 28 22.8
Newman Aero 26.4 = 26.4 in 2009 22 24.3
Fitzroy Crossing Aero 26.1 25.8 in 2004 21 25.2



Record lowest summer mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
summer
Gingin Aero 14.5 = 14.5 in 2005 22 16.0



Record highest summer mean temperature
New record
(°C)
Old
record
Years of
record
Average for
summer
Wittenoom 34.7 = 34.7 in 2004 65 32.3
Telfer Aero 35.5 34.8 in 1990 43 32.7
Doongan 29.7 28.9 in 2015 28 28.1
Forrest 25.6 25.5 in 2000 25 24.1
Newman Aero 34.1 33.9 in 2009 22 31.3
Paraburdoo Aero 35.0 = 35.0 in 1997 22 32.5
Fitzroy Crossing Aero 33.6 33.3 in 2004 21 31.5

Highest summer mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
summer
Giles Meteorological Office 31.6 31.8 in 1990 29.6
Kununurra Aero 31.8 32.4 in 1991 30.5



Lowest summer mean temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
summer
Denham 25.0 24.7 in 1993 26.2



Summary statistics for summer 2018-19
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
summer
2018-19
Diff
from
average
Highest for
summer
2018-19
Mean for
summer
2018-19
Diff
from
average
Lowest for
summer
2018-19
Total for
summer
2018-19
Average
for
summer
Rank of
summer
2018-19
Fraction of
summer
average
North Kimberley (district 01)
Doongan 35.5 +2.1 41.9 7 Dec 2018 23.9 +1.1 20.4 5 Feb 2019 174.4 774.0 lowest 23%
Troughton Island 32.6 +0.5 34.2 22 Dec 2018 27.5 +0.8 22.7 14 Jan 2019 357.0 577.2 average 62%
Truscott 33.9 +1.1 38.0 24 Dec 2018 26.5 +0.9 22.0 13 Jan 2019 444.6 739.5 low 60%
Wyndham Aero 38.8 +2.1 45.8 12 Dec 2018 26.7 +0.5 22.0 2 Jan 2019 444.8 573.6 average 78%
East Kimberley (district 02)
Halls Creek Airport 39.8   44.3 25 Dec 2018 25.5   19.2 24 Feb 2019 212.8
Kununurra Aero 38.1 +2.1 44.6 20 Dec 2018 25.5 +0.4 22.0 3 Feb 2019 372.6 569.4 low 65%
Warmun 38.1 +0.9 45.2 20 Dec 2018     20.3 4 Jan 2019 372.7 478.0 average 78%
West Kimberley (district 03)
Bidyadanga 35.2 +0.7 44.0 23 Dec 2018     25.0 2 Dec 2018 64.8 325.2 v low 20%
Broome Airport 33.7 +0.3 42.3 22 Dec 2018 27.2 +0.9 21.1 17 Feb 2019 180.8 434.6 low 42%
Curtin Aero 38.4 +1.7 46.7 21 Dec 2018 25.2 +0.3 20.7 20 Feb 2019 261.0 564.9 low 46%
Cygnet Bay     38.8 24 Dec 2018 26.4 +1.0 22.6 7 Jan 2019 135.2 505.8 low 27%
Derby Aero 37.0 +1.4 45.6 21 Dec 2018 26.2 +0.4 21.7 20 Feb 2019 273.4 483.2 low 57%
Fitzroy Crossing Aero 41.2 +3.4 46.7 25 Dec 2018 26.1 +0.9 21.4 4 Jan 2019 137.2 459.3 lowest 30%
De Grey (district 04)
Bedout Island 33.0 -0.5 35.7 15 Jan 2019 26.9 -0.4 24.2 1 Dec 2018
Karratha Aero 36.2 +0.4 45.5 16 Feb 2019 26.9 +0.6 19.8 17 Dec 2018 2.8 136.6 v low 2%
Legendre Island 31.8   36.8 9 Feb 2019 26.3   20.8 17 Dec 2018
Mandora 36.8 +0.7 47.0 22 Dec 2018 25.6 +0.6 18.8 18 Dec 2018 66.0 225.1 low 29%
Marble Bar 43.7 +3.0 49.3 27 Dec 2018 27.1 +0.9 21.3 1 Feb 2019 86.2 214.1 low 40%
Port Hedland Airport 37.0 +0.6 45.2 12 Dec 2018 25.8 +0.7 19.7 18 Dec 2018 39.6 171.1 low 23%
Roebourne Aero 39.8 +1.1 48.9 27 Dec 2018 26.1 +0.4 20.2 3 Dec 2018 30.0 139.2 low 22%
Fortescue (district 05)
Barrow Island Airport 32.9 -0.1 41.2 24 Feb 2019 25.1 -0.5 20.5 2 Dec 2018 16.8 81.8 average 21%
Karijini North 42.4   47.6 27 Dec 2018 26.7   19.7 17 Dec 2018 93.4
Learmonth Airport 39.2 +1.8 47.6 25 Feb 2019 22.0 -0.7 16.9 12 Dec 2018 0 77.7 lowest 0%
Onslow Airport 37.5 +1.3 49.1 27 Dec 2018 24.4 +0.5 18.7 17 Dec 2018 21.4 103.4 average 21%
Thevenard Island 33.1 +0.1 44.0 24 Feb 2019 24.9 -0.2 20.0 3 Dec 2018 12.0 86.5 average 14%
Wittenoom 42.4 +3.4 47.8 27 Dec 2018 27.1 +1.5 19.7 17 Dec 2018 108.4 267.3 low 41%
West Gascoyne (district 06)
Carnarvon Airport 30.9 -0.2 45.3 27 Jan 2019 21.8 -0.4 16.8 7 Dec 2018 3.3 36.5 low 9%
Denham 29.3 -1.3 44.0 27 Jan 2019 20.6 -1.3 17.0 3 Feb 2019 0 25.3 lowest 0%
Murchison 39.5 +1.0 47.0 26 Feb 2019 21.7 -0.3 14.8 12 Dec 2018 1.4 66.0 lowest 2%
Shark Bay Airport 33.2 -0.5 46.8 20 Jan 2019 20.4 -0.8 16.1 1 Dec 2018 0 40.2 v low 0%
East Gascoyne (district 07)
Newman Aero 41.9 +3.5 46.7 30 Dec 2018 26.4 +2.1 19.5 18 Dec 2018 74.0 175.1 low 42%
Paraburdoo Aero 43.1 +3.2 46.5 27 Dec 2018 26.7 +1.5 18.2 17 Dec 2018 66.0 158.0 low 42%
Murchison (district 07A)
Meekatharra Airport 40.4 +3.2 46.0 12 Jan 2019 25.2 +1.8 16.9 17 Dec 2018 3.2 80.6 lowest 4%
Mount Magnet Aero 39.1 +2.3 46.1 12 Jan 2019 23.1 +0.5 14.9 12 Dec 2018 5.8 81.2 v low 7%
Paynes Find 37.9 +1.6 45.4 27 Feb 2019 20.3 +0.1 12.9 1 Dec 2018 17.2 56.8 low 30%
North Coast (district 08)
Dalwallinu 35.3 +0.9 43.8 21 Jan 2019 16.3 -1.2 9.4 1 Dec 2018 0.6 48.3 lowest 1%
Geraldton Airport 30.4   45.1 20 Jan 2019 17.0   10.9 7 Dec 2018 3.2
Kalbarri 31.9 -1.0 44.0 27 Jan 2019 18.9 -0.4 11.1 22 Feb 2019 13.0 17.1 average 76%
Morawa Airport 37.1 +0.7 44.9 21 Jan 2019 18.1 -1.2 11.2 5 Dec 2018 3.8 54.5 low 7%
Mullewa 36.4 +0.5 44.3 20 Jan 2019 18.2 -0.7 11.0 7 Dec 2018 12.0 40.6 low 30%
North Island 26.4 -1.1 34.4 23 Dec 2018 20.1 -1.0 15.2 17 Dec 2018 20.0 14.1 high 142%
Wongan Hills 34.8 +1.0 43.2 20 Jan 2019 16.4 -0.9 9.5 2 Dec 2018 16.6 40.5 average 41%
Central Coast (district 09)
Badgingarra Research Stn 33.6 -0.2 44.0 20 Jan 2019 15.8 -0.8 8.9 1 Dec 2018 2.2 34.8 low 6%
Bickley 29.6 -0.1 40.4 20 Jan 2019 14.8 -0.2 8.4 4 Jan 2019 18.4 55.5 low 33%
Garden Island HSF 25.4 -1.6 38.7 22 Dec 2018 18.0 -0.5 13.5 6 Dec 2018 2.2 41.6 v low 5%
Gingin Aero 32.0 -0.3 44.1 20 Jan 2019 14.5 -1.5 5.7 7 Dec 2018 4.2 41.8 low 10%
Jandakot Aero 30.2 -0.5 42.0 20 Jan 2019 15.6 -0.6 6.8 4 Jan 2019 7.6 46.1 low 16%
Jurien Bay 28.7 -1.0 40.3 9 Feb 2019 16.5 -0.4 10.5 7 Dec 2018 7.2 28.7 average 25%
Lancelin 26.8 -2.0 38.0 22 Dec 2018 16.6 -0.7 10.7 25 Jan 2019 11.8 32.5 average 36%
Millendon (Swan Valley) 32.1   43.9 20 Jan 2019 15.5   8.0 7 Dec 2018 12.6
Pearce RAAF 33.1 +0.7 44.4 20 Jan 2019 15.3 -1.1 6.8 7 Dec 2018 6.4 32.5 low 20%
Perth Airport 31.3 +0.4 42.9 20 Jan 2019 16.1 -0.4 7.0 4 Jan 2019 6.8 37.2 low 18%
Perth Metro 30.5 -0.2 42.1 20 Jan 2019 16.9 -0.7 10.0 4 Jan 2019 9.2 42.7 low 22%
Rottnest Island 25.0 -1.3 37.9 22 Dec 2018 18.2 -0.5 13.6 6 Dec 2018 11.6 39.3 average 30%
Swanbourne 27.6 -1.8 39.0 22 Dec 2018 17.4 -0.4 11.3 25 Jan 2019 6.8 42.2 low 16%
South Coast (district 09A)
Albany 21.8 -0.7 27.4 22 Dec 2018 15.5 +0.6 9.5 30 Dec 2018 37.9 77.0 low 49%
Albany Airport 24.1   36.7 1 Feb 2019 13.0   4.8 29 Dec 2018 44.0
Bridgetown 29.5 +0.5 40.4 20 Jan 2019 11.7 -0.8 4.5 26 Jan 2019 22.6 47.8 average 47%
Bunbury 28.3 -0.7 36.1 6 Feb 2019 13.9 -1.0 7.2 4 Jan 2019 16.4 36.8 average 45%
Busselton Aero 29.3 -0.1 37.2 20 Jan 2019 13.2 -0.6 7.0 7 Dec 2018 42.0 30.3 average 139%
Cape Leeuwin 22.3 -0.5 24.7 19 Jan 2019 16.5 -0.2 12.5 6 Dec 2018 83.2 53.1 high 157%
Cape Naturaliste 25.3 +0.3 33.4 22 Dec 2018 14.2 -0.7 9.7 29 Dec 2018 37.0 35.5 average 104%
Collie East 30.3 +0.3 40.5 20 Jan 2019 12.0 -0.9 5.3 4 Jan 2019 17.6 52.7 average 33%
Donnybrook 30.1 +0.3 40.0 20 Jan 2019 14.0 +0.3 7.7 7 Dec 2018 20.1 44.1 low 46%
Dwellingup 29.9 +1.0 39.9 20 Jan 2019 13.8 0.0 7.0 4 Jan 2019 20.0 60.2 low 33%
Esperance 25.6 0.0 41.8 21 Jan 2019 15.7 +0.3 9.9 7 Dec 2018 36.4 72.3 low 50%
Esperance Aero 28.1 +1.0 43.4 21 Jan 2019 14.4 -0.2 7.3 7 Dec 2018 36.8 77.4 low 48%
Hopetoun North 24.5 -0.4 34.4 22 Dec 2018 15.2 +0.2 7.7 7 Dec 2018 8.0 88.6 lowest 9%
Jarrahwood 30.0 +1.1 41.0 20 Jan 2019 11.6 -0.9 4.5 7 Dec 2018 32.6 46.6 average 70%
Mandurah 28.0 -0.7 35.8 21 Dec 2018 17.8 -0.7 13.2 25 Jan 2019 9.6 47.3 low 20%
Manjimup 27.3 +0.9 40.4 20 Jan 2019 12.3 -0.4 7.2 7 Dec 2018 54.2 63.9 average 85%
North Walpole 22.9 -1.1 30.7 26 Feb 2019 13.3 -0.9 7.3 29 Dec 2018 63.8 93.9 low 68%
Rocky Gully 26.8 0.0 41.8 20 Jan 2019 11.7 -0.6 3.3 29 Dec 2018 31.0 67.1 low 46%
Shannon 25.4 -0.4 37.0 20 Jan 2019 11.8 -0.7 4.7 29 Dec 2018 104.8 65.5 high 160%
Witchcliffe 25.2 -0.9 35.5 22 Dec 2018 13.0 -0.6 6.7 29 Dec 2018 87.8 40.4 high 217%
North Central (district 10)
Bencubbin 34.6 +1.1 44.0 21 Jan 2019 17.8 +0.4 11.3 7 Dec 2018 45.1 50.6 average 89%
Cunderdin Airfield 35.1 +1.2 44.3 21 Jan 2019 15.6 -0.9 6.7 7 Dec 2018 2.8 47.4 v low 6%
Merredin 34.7 +1.6 44.2 21 Jan 2019 17.5 +0.3 10.9 1 Dec 2018 27.6 44.6 average 62%
Northam 34.2 +0.8 44.6 20 Jan 2019 16.3 -0.3 8.0 1 Dec 2018 4.9 35.4 low 14%
York 34.2 +0.8 44.2 20 Jan 2019 15.2 -0.4 6.5 1 Dec 2018 0.5 62.4 v low 1%
South Central (district 10A)
Beverley 34.7 +1.3 44.2 20 Jan 2019 15.3 -0.5 7.8 1 Dec 2018 21.6 37.6 average 57%
Brookton 33.0 +0.9 43.1 20 Jan 2019 14.5 -0.5 6.5 4 Jan 2019 10.5 39.5 low 27%
Corrigin 32.7 +1.1 43.1 21 Jan 2019 15.0 -0.3 8.6 1 Dec 2018 4.2 47.8 v low 9%
Hyden 34.5 +1.6 45.8 21 Jan 2019 14.7 -0.4 7.5 7 Dec 2018 9.6 55.1 low 17%
Jacup 28.7 +1.5 42.9 20 Jan 2019 12.3 -0.5 5.9 4 Jan 2019 5.0 80.6 lowest 6%
Katanning 30.0 +0.6 42.2 20 Jan 2019 12.6 -0.6 7.4 4 Jan 2019 9.2 64.1 low 14%
Lake Grace 31.6 +1.2 42.8 21 Jan 2019 14.3 -0.5 8.5 25 Jan 2019 1.4 73.9 v low 2%
Narembeen 34.7 +1.7 44.5 21 Jan 2019 15.4 -0.6 10.1 4 Jan 2019 21.0 48.7 average 43%
Narrogin 31.1 +1.1 41.6 20 Jan 2019 13.9 +0.2 7.5 25 Jan 2019 12.0 44.3 low 27%
Newdegate Research Station 31.7 +1.3 43.6 21 Jan 2019     4.7 7 Dec 2018 1.0 56.9 lowest 2%
Pingelly 32.5 +1.4 42.3 20 Jan 2019 14.7 -0.4 7.8 1 Dec 2018 4.3 38.4 low 11%
Ravensthorpe 29.0 +0.9 41.5 21 Jan 2019 14.3 +0.5 6.0 8 Dec 2018 23.7 75.3 low 31%
Wagin 31.2 +0.9 42.3 20 Jan 2019 13.8 -0.4 6.5 25 Jan 2019 7.4 42.6 low 17%
Wandering 31.8 +0.5 43.0 20 Jan 2019 12.7 -0.9 3.9 25 Jan 2019 7.8 50.5 low 15%
Eucla (district 11)
Balladonia 31.7 +1.0 44.7 22 Jan 2019 14.4 +0.1 8.7 22 Dec 2018 40.4 60.0 average 67%
Eucla 28.2 +2.7 48.6 23 Jan 2019 17.2 +0.9 10.6 28 Jan 2019 24.4 54.4 average 45%
Eyre 28.8 +2.5 48.5 2 Jan 2019 15.1 0.0 1.2 15 Dec 2018 18.9 58.8 low 32%
Forrest 34.4 +2.2 47.5 23 Jan 2019 16.6 +0.6 8.9 15 Dec 2018 47.4 82.9 average 57%
Red Rocks Point 26.2 +1.1 49.1 23 Jan 2019 18.0 +0.1 10.2 2 Dec 2018 7.6 84.5 v low 9%
South East (district 12)
Bulga Downs 38.9 +2.1 46.2 13 Jan 2019 21.9 +0.5 15.3 24 Jan 2019
Laverton Aero 37.5 +3.2 46.9 13 Jan 2019 22.1 +1.4 15.8 4 Dec 2018 76.8 137.4 low 56%
Leinster Aero 38.9 +2.9 46.9 13 Jan 2019 23.4 +1.2 14.7 10 Dec 2018 43.8 105.2 low 42%
Leonora Aero 38.1 +2.6 46.9 13 Jan 2019 22.5 +0.8 15.8 7 Dec 2018 69.6 107.2 average 65%
Munglinup West 29.0 +0.6 42.2 21 Jan 2019 13.4 -0.7 6.3 7 Dec 2018 10.4 104.9 v low 10%
Norseman Aero 34.0 +2.4 46.5 13 Jan 2019 15.4 +0.1 6.4 7 Dec 2018 15.2 83.9 v low 18%
Salmon Gums Res.Stn. 31.8 +2.0 44.4 13 Jan 2019 13.7 +0.3 3.5 13 Dec 2018 12.0 70.4 v low 17%
Southern Cross Airfield 35.2 +1.5 44.1 21 Jan 2019 17.3 +0.3 10.2 7 Dec 2018 45.8 71.2 average 64%
North East (district 13)
Carnegie 40.6 +3.0 47.8 15 Jan 2019 24.1 +1.1 15.9 18 Dec 2018 28.7 115.9 low 25%
Giles Meteorological Office 39.3 +2.9 45.3 3 Jan 2019 23.8 +1.0 14.4 15 Dec 2018 92.6 123.5 average 75%
Telfer Aero 43.2 +3.5 47.4 27 Dec 2018 27.7 +2.1 21.9 17 Dec 2018 30.8 210.4 lowest 15%
Warburton Airfield 39.5 +2.5 47.4 28 Dec 2018 24.2 +2.0 17.5 14 Dec 2018 37.4 98.9 low 38%
Wiluna 40.0 +2.9 47.0 31 Dec 2018 24.4 +2.3 17.0 18 Dec 2018 63.6 98.2 average 65%
Wiluna Aero 40.5   47.1 13 Jan 2019 24.5   18.4 17 Dec 2018 53.2
Offshore Islands (district 200)
Adele Island 31.1   32.8 20 Jan 2019 27.1   22.6 14 Jan 2019
Browse Island 30.0   32.5 24 Dec 2018 27.6   21.8 2 Jan 2019
Rowley Shoals 28.9   31.6 27 Feb 2019      
Varanus Island 31.4 -0.5 36.7 10 Jan 2019 25.5 -0.4 20.9 17 Dec 2018 9.8 88.1 low 11%

Notes

The Seasonal 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 Friday 1 March 2019. 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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