Western Australia in spring 2019: driest and warmest spring

Spring 2019 was the driest and also warmest spring on record in terms of mean temperature and daytime temperatures for Western Australia. Rainfall was below average for most of the State, and very much below average for the southern half and and Gascoyne. It was State's driest spring on record. The whole State saw above to very much above average daytime temperatures, and it was WA's warmest spring on record. Overnight temperatures were above average for most of WA except the northeast with below average or near average overnight temperatures. It was the State's sixth-highest spring minimum temperature on record.

Below average rainfall for most of WA

  • Spring rainfall was 66 % below average, the driest spring on record for WA
  • Apart from the South West Land Division and parts of the Kimberley, much of the State received no rain or less than 10 mm falls this spring; many sites along the west coast, Goldfields and Pilbara had their driest spring on record or driest spring for at least 20 years
  • Kalgoorlie-Boulder Airport recorded only 2.8 mm this spring, which was its equalled driest spring on record along with 1957 (2.8 mm)
  • A broad trough across the northern Australia in late November produced isolated thunderstorms with the State's highest daily rainfall of the month was 63 mm at Kununurra Checkpoint in the Kimberley
  • Rainfall for the year so far was below to very much below average for most of the State, and a small area around Port Hedland in the Pilbara had above average rainfall due to a very wet March; the year to date rainfall was the second-driest 11-month (January-November) on record, and driest since 1936 for WA

Above average daytime temperatures across WA

  • The mean temperature (average of maximum and minimum temperature) was 2.08 °C above average, the highest on record for WA
  • The mean maximum temperature was 3.13 °C above average, the warmest spring on record for WA, and exceeding previous record (2.58 °C in spring 2015) by a relatively large margin
  • The mean minimum temperature was 1.02 °C above average, the sixth-warmest spring on record for WA
  • Three noticeable heat events in November had many sites registered their highest spring temperature on record
  • Many sites across the State had their warmest spring on record in terms of maximum temperatures
  • Mean maximum temperatures and mean temperatures for the year for far were above to very much above average across the whole State; the year to date mean maximum and mean temperature were the warmest 11-month (January-November) on record for WA
  • Mean minimum temperatures for the year so far were above to very much above average for much of WA except the northeast and southwest

Further information

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Extremes in spring 2019
Hottest day 47.1 °C at Mandora on 14 Nov
Warmest days on average 40.6 °C at Fitzroy Crossing Aero
Coolest days on average 19.3 °C at Albany
Coldest day 10.3 °C at Shannon on 4 Sep
Coldest night -5.5 °C at Salmon Gums Res.Stn. on 6 Sep
-5.5 °C at Eyre on 8 Sep
Coolest nights on average 6.8 °C at Wandering
Warmest nights on average 26.1 °C at Troughton Island
Warmest night 31.9 °C at Argyle Aerodrome on 20 Nov
Warmest on average overall 31.7 °C at Argyle Aerodrome
Coolest on average overall 14.3 °C at Shannon
Wettest overall 241.4 mm at Wereroa
Driest overall 0 mm at Cygnet Bay and others
Wettest day 63.0 mm at Kununurra Checkpoint on 23 Nov
Strongest wind gust 107 km/h at Rottnest Island on 4 Oct
107 km/h at Forrest on 24 Nov

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 lowest spring total rainfall
New record
(mm)
Old
record
Years of
record
Average for
spring
Kalgoorlie-Boulder Airport 2.8 = 2.8 in 1957 80 48.2
Karara 7.6 14.8 in 1935 41 42.9
Mount Gibson 6.2 = 6.2 in 2016 38 52.8
Useless Loop 1.1 4.4 in 1994 36 18.2
Doongan 15.6 54.7 in 2018 29 150.6
Laverton Aero 4.6 4.8 in 2016 26 40.4
Swanbourne 60.8 68.8 in 2000 26 143.9
Forrest 4.4 13.4 in 2016 25 46.6
Leinster Aero 0.0 0.4 in 2005 25 32.3
Mount Magnet Aero 2.8 6.6 in 2007 25 28.5
Morawa Airport 9.8 10.0 in 2010 23 41.4
Norseman Aero 13.4 21.8 in 2007 20 71.7
Shark Bay Airport 2.0 4.8 in 2008 20 15.7

Lowest spring total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
spring
Pingelly 23.1 17.9 in 1936 80.6
Chillinup 43.1 42.7 in 1940* 106.3
Giles Meteorological Office 7.2 5.1 in 1963 54.1
Fraser Range 6.5 4.3 in 1957* 65.2
Mount Barnett 8.4 0.0 in 1913* 112.8
Chamingup 59.6 47.7 in 1972* 119.2
Riverdale 47.6 40.3 in 1972* 105.3
Paynes Find 4.2 0.0 in 1967* 35.9
Denham 2.0 1.4 in 1982* 17.1
Mundrabilla Station 6.3 0.0 in 1989 53.4
Telfer Aero 0.4 0.1 in 1989 20.1
Warburton Airfield 7.6 4.0 in 1972* 44.0
Eucla 18.0 16.9 in 1991* 58.3
Kalbarri 8.6 8.5 in 1994 44.0
Murchison 2.5 0.4 in 1994* 19.8
Woolgorong 3.0 0.0 in 1994* 21.0
Lansdowne 5.8 3.8 in 1963* 68.8
Mount Elizabeth 33.8 16.2 in 1996* 117.8

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




Record highest spring temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Kellerberrin 44.5 on 16 Nov 43.1 on 23 Nov 2006 107 24.8
Salmon Gums Res.Stn. 45.0 on 17 Nov 42.4 on 13 Nov 2003 83 23.5
Broome Airport 44.6 on 23 Nov 44.3 on 23 Nov 1961 81 32.8
Kalgoorlie-Boulder Airport 44.7 on 17 Nov 42.9 on 26 Nov 2000 79 25.8
Mullewa 43.5 on 16 Nov 43.2 on 11 Nov 2003 77 27.3
Perth Airport 41.1 on 16 Nov 40.8 on 11 Nov 2003 76 23.0
Corrigin 42.0 on 17 Nov 41.7 on 23 Nov 2006 72 23.2
Meekatharra Airport 44.0 on 18 Nov 42.6 on 16 Nov 2015 70 29.6
Pearce RAAF 43.1 on 16 Nov 41.6 on 22 Nov 1978 65 23.6
Cape Naturaliste 35.2 on 9 Nov 34.7 on 20 Nov 1982 63 19.2
Bencubbin 43.1 on 16 Nov 42.2 on 22 Nov 1996 61 25.1
Dwellingup 38.0 on 16 Nov = 38.0 on 11 Nov 2003 61 20.4
Mandora 47.1 on 14 Nov 46.8 on 22 Oct 2002 58 35.5
Balladonia 44.5 on 17 Nov 44.1 on 28 Nov 2006 55 25.1
Merredin 43.5 on 17 Nov 41.9 on 23 Nov 2006 54 24.8
Badgingarra Research Stn 42.5 on 16 Nov 42.2 on 24 Nov 1993 53 24.5
Brookton 41.4 on 16 Nov 41.3 on 23 Nov 1978 53 23.4
Wongan Hills 43.2 on 16 Nov 42.0 on 23 Nov 2006 53 25.1
Narembeen 43.1 on 17 Nov 42.2 on 23 Nov 1978 52 24.8
Hyden 44.0 on 17 Nov 43.2 on 13 Nov 2007 48 24.6
Pingelly 41.2 on 16 Nov 40.3 on 23 Nov 1978 48 22.5
Wagin 40.9 on 16 Nov 40.4 on 22 Nov 1996 47 22.0
Goomalling 43.0 on 17 Nov = 43.0 on 24 Nov 1978 44 25.2
Paynes Find 44.8 on 18 Nov 43.5 on 22 Nov 1996 41 27.8
Denham 42.0 on 8 Nov 41.6 on 10 Nov 1996 32 25.7
Jandakot Aero 40.3 on 9 Nov 40.0 on 11 Nov 2003 30 23.1
Murchison 45.5 on 17 Nov 43.8 on 23 Nov 2006 30 30.4
Esperance Aero 42.2 on 17 Nov = 42.2 on 13 Nov 2003 28 21.6
Laverton Aero 44.7 on 19 Nov 42.8 on 16 Nov 2015 28 28.2
Forrest 45.5 on 19 Nov 44.9 on 14 Nov 2009 27 27.3
Gosnells City 41.5 on 16 Nov 41.4 on 11 Nov 2003 27 24.3
Jacup 41.1 on 17 Nov 40.9 on 13 Nov 2003 27 21.8
Bickley 38.9 on 16 Nov 38.0 on 11 Nov 2003 26 21.2
Leinster Aero 44.3 on 19 Nov 42.8 on 10 Nov 2010 26 29.4
Perth Metro 40.4 on 16 Nov 40.3 on 11 Nov 2003 26 23.5
Bunbury 37.5 on 9 Nov 36.0 on 12 Nov 2007 25 21.4
Mount Magnet Aero 45.2 on 18 Nov 43.6 on 23 Nov 2006 25 29.0
Cunderdin Airfield 43.9 on 17 Nov 43.5 on 22 Nov 1996 24 25.7
Gingin Aero 43.0 on 16 Nov 42.8 on 11 Nov 2003 24 24.3
Newdegate Research Station 42.6 on 17 Nov 40.7 on 12 Nov 2003 24 23.2
Paraburdoo Aero 44.7 on 17 Nov = 44.7 on 23 Oct 2002 24 35.2
Southern Cross Airfield 44.6 on 17 Nov 41.4 on 14 Nov 2007 24 26.0
York 43.0 on 16 Nov 42.1 on 12 Nov 2003 24 24.8
Dalwallinu 43.5 on 16 Nov 43.0 on 12 Nov 2003 23 26.0
Fitzroy Crossing Aero 46.5 on 22 Nov 45.6 on 30 Nov 2015 23 39.5
Lake Grace 41.8 on 17 Nov 41.2 on 12 Nov 2003 23 23.3
Morawa Airport 45.0 on 16 Nov 43.7 on 11 Nov 2003 23 27.9
Wandering 41.3 on 16 Nov 40.2 on 12 Nov 2003 21 22.7
Norseman Aero 45.4 on 17 Nov 42.4 on 29 Nov 2007 20 25.6



Record highest spring mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Broome Airport 34.2 34.1 in 1989 80 32.8
Kalgoorlie-Boulder Airport 29.3 28.5 in 2015 78 25.8
Mullewa 30.9 29.7 in 2000 74 27.3
Port Hedland Airport 37.4 37.3 in 2014 71 34.6
Meekatharra Airport 33.6 32.3 in 2006 69 29.6
Bencubbin 27.8 27.4 in 2015 67 25.1
Mandora 38.0 37.4 in 2014 57 35.5
Merredin 27.9 27.4 in 2015 53 24.8
Badgingarra Research Stn 27.6 27.4 in 2015 51 24.5
Learmonth Airport 34.9 34.7 in 2015 44 32.2
Telfer Aero 38.8 38.4 in 2015 43 36.6
Warburton Airfield 34.8 34.7 in 2014 43 31.5
Curtin Aero 39.8 39.7 in 2007 27 38.5
Laverton Aero 32.0 31.1 in 2015 27 28.2
Forrest 30.0 29.5 in 2014 26 27.3
Karratha Aero 35.8 = 35.8 in 2015 26 33.3
Argyle Aerodrome 39.1 39.0 in 2018 25 37.9
Leinster Aero 32.7 31.6 in 2015 25 29.4
Mount Magnet Aero 32.4 31.5 in 2015 24 29.0
Paraburdoo Aero 37.3 36.8 in 2006 23 35.2
Dalwallinu 28.8 28.1 in 2015 22 26.0
Fitzroy Crossing Aero 40.6 = 40.6 in 2018 22 39.5
Morawa Airport 30.8 30.2 in 2015 22 27.9
Newman Aero 36.3 35.9 in 2014 22 34.4
Southern Cross Airfield 29.0 28.2 in 2015 22 26.0



Record highest spring daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Mullewa 28.2 on 9 Nov 27.4 on 17 Nov 1940 77 11.4
Curtin Aero 29.7 on 5 Nov 28.8 on 28 Nov 2016 28 21.4
Laverton Aero 30.1 on 19 Nov 28.5 on 24 Nov 2005 28 14.0
Argyle Aerodrome 31.9 on 20 Nov 31.8 on 17 Nov 2013 26 24.6
Leinster Aero 28.7 on 19 Nov 28.5 on 24 Nov 2006 26 14.6



Record lowest spring temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Salmon Gums Res.Stn. -5.5 on 6 Sep -4.4 on 19 Sep 1953 83 7.9
Eyre -5.5 on 8 Sep -5.1 on 14 Sep 2017 35 9.9
Esperance Aero 1.9 on 6 Sep 2.7 on 26 Sep 2016 28 10.0
Shannon 0.3 on 6 Sep 0.7 on 1 Sep 2014 23 8.6



Record highest spring mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Carnarvon Airport 17.5 = 17.5 in 2013 73 16.3
Meekatharra Airport 18.0 17.3 in 2015 69 15.2
Badgingarra Research Stn 11.2 = 11.2 in 2015 51 9.8
Leinster Aero 16.7 16.5 in 2006 25 14.6
Mount Magnet Aero 16.5 16.1 in 2015 24 14.3



Record lowest spring mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Kununurra Aero 20.9 21.0 in 2012 33 22.8



Record highest spring mean temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Kalgoorlie-Boulder Airport 21.2 21.0 in 2015 78 18.5
Mullewa 22.0 21.5 in 2006 74 19.4
Meekatharra Airport 25.7 24.8 in 2015 69 22.4
Bencubbin 19.8 = 19.8 in 2015 67 17.6
Badgingarra Research Stn 19.3 = 19.3 in 2015 51 17.1
Laverton Aero 24.1 23.8 in 2014 27 21.1
Leinster Aero 24.7 23.9 in 2014 25 22.0
Mount Magnet Aero 24.4 23.8 in 2015 24 21.6
Paraburdoo Aero 27.9 27.8 in 2015 23 26.5
Newman Aero 27.5 27.3 in 2014 22 25.7
Southern Cross Airfield 19.8 = 19.8 in 2014 22 17.7



Summary statistics for spring 2019
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
spring
2019
Diff
from
average
Highest for
spring
2019
Mean for
spring
2019
Diff
from
average
Lowest for
spring
2019
Total for
spring
2019
Average
for
spring
Rank of
spring
2019
Fraction of
spring
average
North Kimberley (district 01)
Kalumburu 37.7 +1.0 42.4 17 Oct 21.0 -1.1 10.4 1 Sep 34.6 116.8 low 30%
Troughton Island 31.7 0.0 34.6 25 Nov 26.1 0.0 20.5 12 Sep 0 13.4 lowest 0%
Truscott 34.1 -0.2 39.0 11 Oct 23.3 -0.9 15.9 2 Sep 11.8 46.9 v low 25%
Wyndham Aero 39.7 +0.6 44.9 22 Nov 23.0 -1.4 11.1 12 Sep 25.2 78.8 low 32%
East Kimberley (district 02)
Argyle Aerodrome 39.1 +1.2 44.5 22 Nov 24.3 -0.3 15.8 2 Sep 68.6 95.4 average 72%
Halls Creek Airport 37.9   43.7 22 Nov 20.1   8.0 2 Sep 26.0
Kununurra Aero 39.1 +0.9 43.5 22 Nov 20.9 -1.9 10.2 1 Sep 45.4 79.8 low 57%
Warmun 39.1 +1.0 44.5 22 Nov 22.1 -0.3 10.5 1 Sep 36.0 87.9 low 41%
West Kimberley (district 03)
Broome Airport 34.2 +1.4 44.6 23 Nov 21.6 -0.5 10.2 13 Sep 3.4 11.8 average 29%
Curtin Aero 39.8 +1.3 44.5 22 Nov 20.4 -1.0 10.0 3 Sep 12.4 28.3 average 44%
Cygnet Bay 35.0 +0.9 38.6 4 Nov 20.7 -0.5 12.5 12 Sep 0 8.1 lowest 0%
Derby Aero 38.2 +1.2 43.8 20 Oct 22.0 -0.7 11.5 1 Sep 4.6 16.1 average 29%
Fitzroy Crossing Aero 40.6 +1.1 46.5 22 Nov 22.0 -0.4 10.4 1 Sep 25.0 46.0 low 54%
Yampi Sound (Defence) 39.4   43.9 4 Nov 19.9   8.7 12 Sep 37.6
De Grey (district 04)
Karratha Aero 35.8 +2.5 42.3 22 Oct 21.1 +0.8 13.7 22 Sep 0.2 3.1 average 6%
Legendre Island 30.4   39.4 22 Oct 23.2   19.4 8 Sep
Mandora 38.0 +2.5 47.1 14 Nov 18.1 -0.8 7.0 3 Sep 2.2 8.5 average 26%
Marble Bar 39.8 +1.7 45.8 16 Nov 20.9 0.0 10.8 13 Sep 31.0 16.9 high 183%
Port Hedland Airport 37.4 +2.8 45.8 16 Nov 18.9 +0.4 9.7 14 Sep 1.4 4.7 average 30%
Roebourne Aero 38.6 +2.1 45.5 16 Nov 19.0 -0.2 9.7 13 Sep 0 5.8 v low 0%
Fortescue (district 05)
Barrow Island Airport 30.7 +1.7 38.3 11 Oct 21.7 +0.3 16.1 21 Sep 1.4 4.5 average 31%
Karijini North 37.7   43.9 18 Nov 22.1   10.1 21 Sep 3.8
Learmonth Airport 34.9 +2.7 43.6 17 Nov 16.5 +0.3 10.5 24 Sep 0.4 5.4 average 7%
Mardie 36.8 +2.3 44.1 11 Oct 18.5 +1.1 11.1 23 Sep 0 3.6 lowest 0%
Onslow Airport 34.9 +2.4 44.2 17 Nov 19.3 +1.5 13.3 6 Sep 0.4 4.8 low 8%
Thevenard Island 30.9 +1.6 37.3 11 Oct 21.3 +0.9 14.7 9 Sep 1.8 3.8 average 47%
West Gascoyne (district 06)
Carnarvon Airport 27.8 +1.7 41.9 30 Nov 17.5 +1.2 9.8 23 Sep
Denham 26.6 +0.9 42.0 8 Nov     11.5 20 Sep 2.0 17.1 v low 12%
Shark Bay Airport 29.7 +1.5 42.8 8 Nov 15.7 +0.5 9.7 6 Sep 2.0 15.7 lowest 13%
East Gascoyne (district 07)
Newman Aero 36.3 +1.9 43.2 19 Nov 18.7 +1.7 6.8 21 Sep 1.8 22.6 low 8%
Paraburdoo Aero 37.3 +2.1 44.7 17 Nov 18.5 +0.7 10.5 14 Sep 0.4 15.4 v low 3%
Murchison (district 07A)
Meekatharra Airport 33.6 +4.0 44.0 18 Nov 18.0 +2.8 7.3 21 Sep 0 22.2 lowest 0%
Mount Magnet Aero 32.4 +3.4 45.2 18 Nov 16.5 +2.2 4.6 20 Sep 2.8 28.5 lowest 10%
North Coast (district 08)
Dalwallinu 28.8 +2.8 43.5 16 Nov 10.6 +0.7 -0.1 6 Sep 23.0 50.4 low 46%
Geraldton Airport 27.3   41.7 13 Nov 12.0   2.9 7 Sep
Kalbarri 28.0 +1.8 41.0 13 Nov 13.8 +0.9 5.2 20 Sep 8.6 44.0 v low 20%
Morawa Airport 30.8 +2.9 45.0 16 Nov 12.1 +1.0 2.4 6 Sep 9.8 41.4 lowest 24%
Mullewa 30.9 +3.6 43.5 16 Nov 13.1 +1.7 5.3 4 Sep 12.3 42.9 v low 29%
North Island 24.3 +0.6 30.8 13 Nov 17.7 +0.5 10.6 18 Sep 11.2 31.1 low 36%
Wongan Hills 28.0 +2.9 43.2 16 Nov 11.0 +0.7 1.8 20 Sep 38.6 61.5 low 63%
Central Coast (district 09)
Badgingarra Research Stn 27.6 +3.1 42.5 16 Nov 11.2 +1.4 3.4 20 Sep 24.8 95.1 v low 26%
Bickley 23.1 +1.9 38.9 16 Nov 10.6 +0.7 2.4 5 Sep 155.0 228.7 low 68%
Garden Island HSF 22.1 +0.9 38.1 9 Nov 14.2 +0.4 7.5 5 Sep 55.6 110.0 low 51%
Gingin Aero 26.6 +2.3 43.0 16 Nov 9.6 0.0 -0.2 20 Sep 76.8 130.8 low 59%
Jandakot Aero 25.1 +2.0 40.3 9 Nov 10.7 +0.5 1.4 7 Sep 84.0 159.1 v low 53%
Jurien Bay 25.2 +1.7 40.1 14 Nov 12.1 +0.5 2.9 7 Sep 34.4 85.6 v low 40%
Lancelin 23.9 +1.2 39.0 9 Nov 12.4 +0.1 3.0 20 Sep 69.1 104.8 low 66%
Millendon (Swan Valley) 26.2   42.2 16 Nov 10.8   2.1 7 Sep 83.0
Pearce RAAF 26.6 +3.0 43.1 16 Nov 11.1 +0.6 1.5 20 Sep 62.0 125.8 v low 49%
Perth Airport 25.9 +2.9 41.1 16 Nov 11.2 +0.5 1.7 7 Sep 76.6 140.7 v low 54%
Perth Metro 25.3 +1.8 40.4 16 Nov 12.2 +0.4 2.5 7 Sep
Rottnest Island 21.9 +1.1 35.8 9 Nov 15.0 +0.7 9.0 5 Sep 47.0 99.5 v low 47%
Swanbourne 23.5 +1.0 40.0 9 Nov 13.5 +0.8 5.3 5 Sep 60.8 143.9 lowest 42%
South Coast (district 09A)
Albany 19.3 +0.6 29.0 9 Sep 11.9 +1.1 4.0 6 Sep 147.6 224.0 low 66%
Albany Airport 20.5   31.2 20 Oct 9.7   1.6 6 Sep
Bridgetown 22.4 +1.6 37.5 16 Nov 7.6 +0.1 -1.7 6 Sep 99.8 156.5 average 64%
Busselton Aero 22.8 +1.3 36.8 9 Nov 9.3 +0.3 1.7 5 Sep 91.0 127.1 low 72%
Cape Leeuwin 19.4 +0.9 25.4 9 Nov 13.8 +0.9 8.3 6 Sep 76.8 189.8 lowest 40%
Cape Naturaliste 21.6 +2.4 35.2 9 Nov 11.8 +0.5 4.6 5 Sep 85.8 149.7 v low 57%
Collie East 23.7 +1.9 38.3 16 Nov 7.9 +0.3 -2.0 6 Sep 95.8 154.1 low 62%
Dwellingup 23.1 +2.7 38.0 16 Nov 9.2 +0.9 -0.6 5 Sep 155.4 253.9 v low 61%
Esperance 22.6 +1.3 39.6 17 Nov 11.6 +0.5 3.6 6 Sep
Esperance Aero 23.4 +1.8 42.2 17 Nov 10.2 +0.2 1.9 6 Sep 96.6 139.8 low 69%
Hopetoun North 22.1 +0.5 38.5 10 Nov 11.1 +0.7 1.4 6 Sep 99.0 125.9 low 79%
Mandurah 23.1 +1.2 37.7 15 Nov 13.9 +0.3 5.4 5 Sep 62.6 115.8 low 54%
Manjimup 21.5 +2.3 37.1 16 Nov 9.2 +0.6 1.3 5 Sep 132.0 227.9 v low 58%
North Walpole 19.8 +0.7 31.7 9 Nov 10.7 +0.2 4.9 5 Sep 182.2 244.5 low 75%
Rocky Gully 20.9 +1.3 37.3 16 Nov 8.7 +0.4 1.1 6 Sep 119.8 185.0 low 65%
Shannon 20.0 +1.0 36.4 16 Nov 8.7 +0.1 0.3 6 Sep 205.4 242.8 low 85%
Witchcliffe 20.8 +0.9 35.3 9 Nov 9.9 +0.3 1.7 6 Sep 150.4 204.3 low 74%
North Central (district 10)
Bencubbin 27.8 +2.7 43.1 16 Nov 11.8 +1.7 1.0 20 Sep 25.5 51.0 low 50%
Cunderdin Airfield 28.1 +2.4 43.9 17 Nov 8.7 +0.2 -1.3 7 Sep 32.4 58.0 low 56%
Merredin 27.9 +3.1 43.5 17 Nov 11.5 +1.6 0.5 20 Sep 26.4 58.8 low 45%
York     43.0 16 Nov 7.7 0.0 -1.2 6 Sep 35.7 72.9 low 49%
South Central (district 10A)
Brookton 25.8 +2.4 41.4 16 Nov 8.3 +0.3 -1.0 20 Sep 23.8 77.6 v low 31%
Hyden 27.9 +3.3 44.0 17 Nov 9.3 +0.7 -1.5 7 Sep 38.4 68.9 low 56%
Jacup 24.2 +2.4 41.1 17 Nov 8.4 +0.5 -0.8 6 Sep 49.8 110.5 v low 45%
Katanning 23.4 +1.6 39.5 16 Nov 8.6 +0.7 0.8 6 Sep 54.4 103.8 low 52%
Lake Grace 25.5 +2.2 41.8 17 Nov 9.6 +0.5 -1.6 5 Sep 27.0 76.0 v low 36%
Newdegate Research Station 25.4 +2.2 42.6 17 Nov 7.4 +0.1 -3.5 6 Sep 35.6 77.4 v low 46%
Ravensthorpe 24.6 +2.2 42.0 17 Nov     0.5 6 Sep 50.9 109.4 v low 47%
Wandering 24.5 +1.8 41.3 16 Nov 6.8 -0.1 -1.6 5 Sep 71.2 104.5 low 68%
Eucla (district 11)
Eucla 25.7 +2.8 39.4 24 Nov 11.8 +0.5 2.1 7 Sep 18.0 58.3 low 31%
Eyre 25.3 +2.3 42.7 17 Nov 10.0 +0.1 -5.5 8 Sep 32.5 64.2 low 51%
Forrest 30.0 +2.7 45.5 19 Nov 10.6 0.0 0.7 7 Sep 4.4 46.6 lowest 9%
Red Rocks Point 22.9 +0.3 37.3 11 Sep 12.3 0.0 2.5 7 Sep 3.0 62.7 v low 5%
South East (district 12)
Kalgoorlie-Boulder Airport 29.3 +3.5 44.7 17 Nov 13.1 +1.9 2.0 21 Sep 2.8 48.2 lowest 6%
Laverton Aero 32.0 +3.8 44.7 19 Nov 16.2 +2.2 4.8 6 Sep 4.6 40.4 lowest 11%
Leinster Aero 32.7 +3.3 44.3 19 Nov 16.7 +2.1 5.2 20 Sep 0 32.3 lowest 0%
Leonora Aero 32.2 +2.9 45.4 18 Nov 16.0 +1.5 3.9 20 Sep 0.2 39.5 v low 1%
Munglinup West 24.4 +1.3 42.0 17 Nov 9.5 +0.2 0.1 6 Sep 71.6 107.5 low 67%
Norseman Aero 28.0 +2.4 45.4 17 Nov 10.0 +0.7 -3.7 6 Sep 13.4 71.7 lowest 19%
Salmon Gums Res.Stn. 26.1 +2.6 45.0 17 Nov 8.5 +0.6 -5.5 6 Sep 32.8 85.7 v low 38%
Southern Cross Airfield 29.0 +3.0 44.6 17 Nov 10.7 +1.4 -1.3 20 Sep 16.8 52.7 low 32%
North East (district 13)
Giles Meteorological Office 34.1 +2.8 42.2 20 Nov 18.3 +1.6 3.0 21 Sep 7.2 54.1 v low 13%
Telfer Aero 38.8 +2.2 44.4 11 Nov 22.2 +1.8 11.7 21 Sep 0.4 20.1 v low 2%
Warburton Airfield 34.8 +3.3 43.8 20 Nov 18.4 +3.0 7.6 21 Sep 7.6 44.0 low 17%
Wiluna Aero 34.2   44.7 19 Nov 16.7   5.8 21 Sep 0.4
Offshore Islands (district 200)
Adele Island 30.7   33.1 11 Oct 25.9   22.5 1 Sep
Browse Island 30.0   33.1 16 Nov 26.7   23.8 3 Sep

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 11 am on Monday 2 December 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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