Western Australia in spring 2015: Warmest spring days on record

When averaged across the State, WA saw its warmest spring days and second warmest spring nights on record in 2015. Spring rainfall was near-average for WA as a whole, but was well below average for the South West Land Division (SWLD).

  • Mean maximum temperature: highest for WA and SWLD
  • Mean minimum temperature: second highest for WA; highest for SWLD
  • Rainfall: near-average for WA; 13th driest for SWLD

Spring 2015 saw below to very much below average rainfall in much of the South West Land Division (SWLD), southwest Gascoyne and far north Kimberley. Several sites in the SWLD recorded their lowest spring rainfall on record, including Cape Leeuwin with 119 years of record, or lowest spring rainfall since at least 1994. Above average spring rainfall was mostly confined to the northern half of the State, with Drysdale River Station in the Kimberley recording its wettest spring on record, whilst a couple of sites in the Pilbara and Central Wheat Belt recorded their wettest spring for at least 30 years. When averaged across the State, rainfall in spring 2015 was near average, however, for the SWLD, it was well below average, and ranked as the 13th driest spring on record. A broad trough across the Kimberley and complex low over southern WA in early November brought thunderstorms with moderate to heavy rainfall to the Kimberley, Central West and Central Wheat Belt, and a number of sites recorded their highest spring daily rainfall on record.

Mean maximum temperatures were above to very much above average across most of the State in spring 2015, with a large number of sites in the SWLD, Gascoyne, Pilbara, and southern Goldfields observing their warmest spring days on record, including a few sites in the SWLD with over 100 years of record. Averaged across the State, the mean maximum temperature for spring 2015 was the highest since comparable records commenced in 1910, surpassing the previous record set last spring (2014). For the SWLD as a whole, spring 2015 was also the warmest spring on record. A cold start to spring with daily maxima in the low teens in southern parts of the SWLD resulted in the coldest spring day on record at the Southern Cross and Newdegate sites. Temperatures in the low to mid-forties in central WA in late spring saw a few record high spring temperatures in the Gascoyne and Goldfields, whilst temperatures in the mid-forties in late November in the Kimberley, east Pilbara, and Northern Interior saw Curtin Aerodrome record its highest spring temperature on record.

Mean minimum temperatures were above average for most of WA in spring, apart from the Kimberley and adjacent Northern Interior, which saw below average to near average mean minima. WA recorded its second highest mean minimum temperature in spring on record when averaged across the State, whilst for the SWLD as a whole, it was the highest. A number of sites in the SWLD, Gascoyne, Pilbara, and Eucla recorded their highest spring mean daily minimum temperature on record. A record cold spring night with daily minima below 2 °C in early September, following low maximum temperatures the previous day, was experienced in the Goldfields early in the season. In late spring, overnight temperatures were frequently in the mid- twenties near the west coast, and in the high twenties to low thirties in the Pilbara and Eucla, and a number of stations recorded their warmest spring night on record.

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Extremes in spring 2015
Hottest day 46.8 °C at Roebourne Aero on 15 Nov
Warmest days on average 39.9 °C at Fitzroy Crossing Aero
Coolest days on average 20.0 °C at Albany
Coldest day 10.7 °C at Rocky Gully on 1 Sep
Coldest night -2.7 °C at Eyre on 8 Sep
Coolest nights on average 7.5 °C at Wandering
Warmest nights on average 27.0 °C at Browse Island
24.4 °C at Argyle Aerodrome
Warmest night 33.2 °C at Telfer Aero on 23 Nov
Warmest on average overall 31.4 °C at Wyndham Aero
Coolest on average overall 15.3 °C at Shannon
Wettest overall 229.8 mm at Drysdale River Station
Wettest day 123.4 mm at Spring Valley on 7 Nov
Strongest wind gust 109 km/h at Meekatharra Airport on 26 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 highest spring daily rainfall
New record
(mm)
Old
record
Years of
record
Mindalla 47.0 on 7 Nov 44.5 on 15 Oct 1975 98
Konnongorring 62.4 on 7 Nov 55.0 on 15 Nov 1983 95
Lynton 66.2 on 6 Nov 42.5 on 22 Sep 2014 88
Nanyanine 62.0 on 7 Nov 53.0 on 17 Nov 1983 77
Xantippe 51.0 on 6 Nov 37.6 on 14 Nov 1993 74
Spring Valley 123.4 on 7 Nov 46.4 on 14 Nov 1974 56
Drysdale River Station 114.0 on 4 Nov 64.0 on 12 Nov 2003 28
Southern Cross Airfield 42.0 on 26 Oct 30.2 on 25 Oct 2011 20



Record highest spring total rainfall
New record
(mm)
Old
record
Years of
record
Average for
spring
Drysdale River Station 229.8 227.5 in 1998 26 124.3

Highest spring total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
spring
Mount Florance 99.0 101.0 in 1958* 14.3
Coolawanyah 76.4 97.4 in 1982* 12.7
Spring Valley 131.4 140.8 in 1983* 63.0

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




Record lowest spring total rainfall
New record
(mm)
Old
record
Years of
record
Average for
spring
Cape Leeuwin 83.4 88.6 in 1994 119 192.1
Aldervale 51.6 65.5 in 1936 102 140.7
Margaret River 103.7 114.2 in 2010 84 219.0
Pemberton 114.0 128.0 in 1969 74 280.1
Badgingarra Research Stn 33.2 33.8 in 2000 53 99.9
Koolyanobbing 18.8 18.9 in 2000 21 48.3

Lowest spring total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
spring
Manjimup 101.0 97.9 in 1920* 230.6
Three Springs 12.6 8.2 in 1961* 54.6
Roelands 74.8 51.0 in 1969 171.3
Greenbushes 94.2 80.6 in 1969* 203.9
Lancelin 34.4 31.8 in 1969* 104.3
Denmark 150.0 133.1 in 1972 265.1
Balingup 85.8 65.9 in 1969* 177.5
Walpole 181.1 174.6 in 1972* 305.1
Perenjori 14.8 9.1 in 1980* 42.2
Donnybrook 92.8 91.8 in 1994 199.4

* 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
Meekatharra Airport 42.6 on 16 Nov 42.3 on 27 Nov 1979 66 29.6
Gascoyne Junction 45.0 on 15 Nov 44.4 on 24 Nov 1993 44 32.0
Curtin Aero 45.9 on 30 Nov 44.9 on 13 Nov 2004 24 38.4
Laverton Aero 42.8 on 16 Nov 42.6 on 29 Nov 2007 24 28.0



Record lowest spring daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Newdegate Research Station 11.0 on 1 Sep = 11.0 on 9 Sep 2005 20 23.1
Southern Cross Airfield 12.4 on 1 Sep 13.4 on 9 Sep 2005 20 26.0



Record highest spring mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Cape Leeuwin 20.2 = 20.2 in 2010 118 18.5
Donnybrook 24.8 24.2 in 2010 110 21.6
Northam 27.9 27.1 in 1957 110 24.4
Narrogin 25.4 24.4 in 1957 93 21.5
Dwellingup 23.9 23.3 in 2010 76 20.3
Manjimup 22.7 21.6 in 2010 75 19.1
Kalgoorlie-Boulder Airport 28.6 28.2 in 2006 74 25.7
Salmon Gums Res.Stn. 26.2 25.8 in 1961 74 23.4
Perth Airport 26.2 25.8 in 2010 71 22.9
Carnarvon Airport 29.0 28.5 in 2010 69 26.0
Corrigin 27.0 25.8 in 2014 67 23.1
Meekatharra Airport 32.3 = 32.3 in 2006 65 29.6
Bencubbin 27.4 27.2 in 2014 63 25.1
Mardie 37.2 = 37.2 in 1994 59 34.5
Pearce RAAF 27.3 25.9 in 2010 54 23.5
Ravensthorpe 24.7 24.3 in 1996 51 22.4
Onslow Airport 35.5 34.1 in 1944 48 32.4
Badgingarra Research Stn 27.3 26.8 in 1969 47 24.4
Brookton 26.7 25.3 in 2010 47 23.3
Karnet 23.7 23.4 in 2010 47 20.9
Ongerup 24.0 23.2 in 2006 47 21.1
Esperance 23.5 22.9 in 2014 46 21.2
Wongan Hills 28.1 27.0 in 2014 46 25.0
Beverley 28.0 26.8 in 2010 44 24.4
Narembeen 27.9 27.0 in 2014 43 24.7
Pingelly 26.1 24.7 in 2010 43 22.3
Emu Creek Station 36.5 35.9 in 2006 42 34.0
Hyden 27.9 26.9 in 2006 42 24.5
Learmonth Airport 34.7 34.1 in 1994 40 32.2
Wagin 25.4 24.1 in 2010 40 21.9
Telfer Aero 38.4 = 38.4 in 2014 39 36.5
Paynes Find 30.7 30.1 in 2014 36 27.7
Jarrahwood 23.7 23.4 in 2010 32 20.9
Murchison 32.4 32.3 in 2006 24 30.4
Laverton Aero 31.0 30.6 in 2014 23 28.0
Esperance Aero 24.2 23.7 in 2014 22 21.5
Jacup 24.3 23.8 in 2012 22 21.7
Karratha Aero 35.8 35.0 in 2006 22 33.2
Bickley 23.7 23.1 in 2010 21 21.2
Perth Metro 25.9 25.3 in 2010 117 23.4
Gosnells City 26.5 26.2 in 2010 20 24.2
Mount Magnet Aero 31.4 30.9 in 2014 20 28.8

Highest spring mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
spring
Christmas Island Aero 27.9 28.0 in 1982* 26.8

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




Record highest spring daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Carnamah 26.2 on 13 Nov 25.6 on 6 Nov 1959 75 10.6
Cocos Island Airport 28.7 on 30 Nov 27.4 on 28 Oct 1998 64 24.2
Lancelin 24.8 on 22 Nov 22.4 on 29 Oct 1979 50 12.2
Onslow Airport 28.3 on 23 Nov 28.1 on 25 Nov 2006 50 17.7
Christmas Island Aero 25.8 on 29 Nov 25.5 on 24 Oct 1981 44 22.6
Eneabba 26.0 on 13 Nov 25.5 on 11 Nov 2003 43 11.7
Telfer Aero 33.2 on 23 Nov 32.1 on 24 Nov 2006 42 20.3
Denham 24.8 on 13 Nov 24.5 on 28 Nov 2010 28 16.7
Rottnest Island 22.2 on 22 Nov 22.2 on 22 Nov 1978 48 14.3
Forrest 28.9 on 18 Nov 27.4 on 27 Nov 2000 23 10.6
Paraburdoo Aero 29.3 on 16 Nov 28.5 on 23 Nov 2007 20 17.7



Record lowest spring temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Laverton Aero 1.3 on 2 Sep 1.5 on 1 Sep 1993 24 13.9
Leinster Aero 1.4 on 2 Sep 2.3 on 12 Sep 2004 22 14.6



Record highest spring mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Narrogin 9.8 = 9.8 in 1982 94 7.9
Eucla 12.9 12.7 in 2011 70 11.3
Meekatharra Airport 17.3 = 17.3 in 2006 65 15.1
Bencubbin 12.2 = 12.2 in 2014 64 10.1
Mardie 19.9 19.3 in 2010 58 17.3
Ravensthorpe 11.1 10.8 in 1996 51 9.2
Onslow Airport 20.2 19.8 in 2006 48 17.7
Badgingarra Research Stn 11.2 = 11.2 in 1982 47 9.8
Karnet 10.4 = 10.4 in 2013 47 9.2
Ongerup 9.9 9.8 in 1982 47 8.4
Wongan Hills 11.8 11.7 in 1982 47 10.3
Esperance 12.4 12.3 in 2014 46 11.0
Narembeen 11.1 = 11.1 in 2014 43 9.1
Pingelly 10.1 10.0 in 2014 43 8.8
Hyden 10.4 9.9 in 2013 42 8.6
Christmas Island Aero 23.5 23.3 in 1981 40 22.6
Wagin 9.9 = 9.9 in 2013 40 8.3
Paynes Find 13.9 13.6 in 2014 36 11.6
Rottnest Island 15.5 15.3 in 2013 117 14.3
Esperance Aero 11.2 10.9 in 2014 22 10.0
Jacup 9.0 8.9 in 2014 22 7.9
Karratha Aero 21.7 21.3 in 2010 22 20.2
Swanbourne 14.0 13.8 in 2013 22 12.7
Bickley 11.3 10.9 in 2013 21 9.9
Gosnells City 13.6 13.3 in 2013 20 12.2
Mount Magnet Aero 16.1 15.9 in 2006 20 14.2

Highest spring mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
spring
Manjimup 9.9 10.0 in 1982* 8.5
Kalbarri 14.3 14.5 in 1982* 12.8

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




Record highest spring mean temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Cape Leeuwin 17.2 17.0 in 1914 118 15.7
Cape Naturaliste 17.0 = 17.0 in 2006 111 15.3
Donnybrook 17.6 17.5 in 1914 110 15.1
Northam 19.2 19.1 in 1914 110 16.9
Narrogin 17.6 16.5 in 2006 92 14.6
Dwellingup 16.9 16.1 in 2013 75 14.3
Manjimup 16.3 15.4 in 2006 75 13.8
Kalgoorlie-Boulder Airport 21.0 20.9 in 2006 74 18.4
Salmon Gums Res.Stn. 17.7 17.5 in 2006 74 15.6
Perth Airport 19.2 18.5 in 2013 71 16.8
Carnarvon Airport 23.2 22.7 in 1982 69 21.2
Corrigin 18.3 18.0 in 2014 67 15.8
Port Hedland Airport 28.8 = 28.8 in 2006 67 26.5
Meekatharra Airport 24.8 = 24.8 in 2006 65 22.4
Bencubbin 19.7 = 19.7 in 2014 63 17.6
Mardie 28.6 27.5 in 2006 58 25.9
Pearce RAAF 19.4 18.7 in 2013 54 17.0
Ravensthorpe 17.8 17.6 in 1996 51 15.8
Onslow Airport 27.9 26.9 in 2006 48 25.1
Badgingarra Research Stn 19.4 18.8 in 1969 47 17.1
Brookton 18.0 17.3 in 2014 47 15.6
Karnet 17.1 16.5 in 2010 47 15.1
Ongerup 16.9 16.3 in 2006 47 14.8
Esperance 17.9 17.6 in 2014 46 16.1
Beverley 18.7 18.1 in 2014 44 16.5
Hyden 19.2 18.4 in 2006 42 16.6
Narembeen 19.5 19.0 in 2014 42 17.0
Christmas Island Aero 25.7 25.4 in 2012 40 24.7
Learmonth Airport 25.8 = 25.8 in 2006 40 24.2
Wagin 17.7 16.7 in 2006 40 15.1
Paynes Find 22.3 21.8 in 2014 36 19.7
Jarrahwood 16.1 15.7 in 2013 32 14.3
Jandakot Aero 18.4 18.1 in 2013 25 16.6
Rottnest Island 18.9 18.6 in 2013 117 17.5
Laverton Aero 23.5 23.4 in 2006 23 21.0
Esperance Aero 17.7 17.3 in 2014 22 15.8
Jacup 16.7 16.3 in 2014 22 14.8
Karratha Aero 28.7 28.1 in 2006 22 26.7
Swanbourne 19.2 18.9 in 2013 22 17.6
Bickley 17.5 16.7 in 2010 21 15.5
Perth Metro 19.5 18.8 in 2013 117 17.6
Mount Magnet Aero 23.8 23.2 in 2014 20 21.5

Highest spring mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
spring
Albany 16.3 16.6 in 1918* 14.7

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




Summary statistics for spring 2015
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
spring
2015
Diff
from
average
Highest for
spring
2015
Mean for
spring
2015
Diff
from
average
Lowest for
spring
2015
Total for
spring
2015
Average
for
spring
Rank of
spring
2015
Fraction of
spring
average
North Kimberley (district 01)
Doongan 36.1 -0.2 40.3 30 Nov 19.7 -0.9 8.5 11 Sep 167.0 155.9 average 107%
Kalumburu 36.7 +0.2 40.7 27 Nov 21.4 -0.7 11.2 11 Sep 47.4 121.6 low 39%
Mount Elizabeth     40.8 29 Nov 18.0 -0.5 5.3 11 Sep 63.4 116.3 low 55%
Troughton Island 32.2 +0.6 34.5 30 Nov 26.4 +0.3 22.2 12 Sep 2.2 12.7 average 17%
Truscott 34.4 +0.2 39.3 29 Nov 24.0 -0.1 18.0 12 Sep 12.8 49.1 v low 26%
Wyndham Aero 39.0 0.0 42.8 27 Nov 23.8 -0.5 13.5 27 Sep 121.4 80.6 high 151%
East Kimberley (district 02)
Argyle Aerodrome 38.2 +0.4 42.8 29 Nov 24.4 -0.1 17.0 11 Sep 66.8 95.9 average 70%
Halls Creek Airport 36.9 +0.4 42.7 29 Nov 21.6 -0.5 14.1 11 Sep 96.8 61.3 high 158%
Kununurra Aero 38.6 +0.5 43.0 27 Nov 21.8 -1.1 11.4 28 Sep 60.4 79.1 average 76%
Warmun 38.5 +0.5 43.4 27 Nov 21.3 -1.1 11.5 28 Sep 108.0 88.6 high 122%
West Kimberley (district 03)
Bidyadanga 35.0 +1.0 41.8 20 Nov 22.0 +1.2 12.8 27 Sep 1.4 9.7 average 14%
Broome Airport 33.9 +1.1 40.1 2 Oct 22.8 +0.8 12.9 27 Sep 6.0 12.1 average 50%
Curtin Aero 39.0 +0.6 45.9 30 Nov 21.2 -0.2 11.2 2 Sep 40.2 30.5 average 132%
Derby Aero 37.8 +1.0 44.3 28 Nov 22.6 -0.1 14.3 2 Sep 12.0 16.3 average 74%
Fitzroy Crossing Aero 39.9 +0.5 45.6 30 Nov 22.1 -0.3 11.7 11 Sep 78.8 48.1 high 164%
De Grey (district 04)
Bedout Island 32.3   40.2 20 Nov 24.6   20.1 5 Sep
Karratha Aero 35.8 +2.6 43.5 15 Nov 21.7 +1.5 13.7 2 Sep 0.4 3.3 average 12%
Legendre Island 31.7   37.1 26 Oct 23.4   18.0 3 Sep
Mandora 36.9 +1.5 46.2 20 Nov 19.5 +0.7 8.5 29 Sep 8.6 8.6 high 100%
Port Hedland Airport 37.1 +2.6 45.8 15 Nov 20.7 +2.3 12.7 29 Sep 0.4 4.7 low 9%
Roebourne Aero 38.4 +2.0 46.8 15 Nov 20.1 +0.9 11.4 5 Sep 0 6.9 v low 0%
Fortescue (district 05)
Barrow Island Airport 31.5 +2.6 39.8 22 Nov 22.7 +1.4 17.7 15 Sep 1.0 4.6 average 22%
Learmonth Airport 34.7 +2.5 43.9 22 Nov 16.9 +0.7 8.5 3 Sep 0.6 5.4 average 11%
Mardie 37.2 +2.7 45.4 22 Nov 19.9 +2.6 11.0 2 Sep 0 3.7 lowest 0%
Onslow Airport 35.5 +3.1 44.2 22 Nov 20.2 +2.5 12.2 3 Sep 0.4 5.1 low 8%
Wittenoom 37.0 +2.1 43.5 22 Nov 22.1 +1.7 11.5 3 Sep 28.2 16.8 high 168%
West Gascoyne (district 06)
Carnarvon Airport 29.0 +3.0 42.0 12 Nov 17.4 +1.1 7.5 3 Sep 4.0 15.1 low 26%
Denham 27.6 +1.9 39.9 13 Nov 18.1 +1.4 10.9 2 Sep 8.0 17.1 average 47%
Emu Creek Station 36.5 +2.5 45.0 22 Nov 17.6 +0.9 7.3 3 Sep 52.1 8.5 v high 613%
Murchison 32.4 +2.0 42.0 16 Nov 15.3 +2.2 3.5 3 Sep 22.5 19.3 average 117%
Shark Bay Airport 30.2 +2.1 44.8 12 Nov 16.1 +0.9 6.7 3 Sep 12.6 15.6 average 81%
East Gascoyne (district 07)
Newman Aero 35.2 +0.9 41.8 16 Nov 17.7 +0.8 7.1 3 Sep 15.6 23.2 average 67%
Paraburdoo Aero 36.4 +1.2 43.2 16 Nov 19.0 +1.3 8.7 5 Sep 12.6 15.9 average 79%
Murchison (district 07A)
Meekatharra Airport 32.3 +2.7 42.6 16 Nov 17.3 +2.2 5.6 2 Sep 34.6 23.0 high 150%
Mount Magnet Aero 31.4 +2.6 43.0 16 Nov 16.1 +1.9 3.1 2 Sep 20.4 26.8 average 76%
Paynes Find 30.7 +3.0 40.8 16 Nov 13.9 +2.3 1.1 2 Sep 15.2 36.2 low 42%
North Coast (district 08)
Dalwallinu 28.1 +2.2 38.6 14 Nov 11.4 +1.5 1.0 2 Sep 9.8 50.5 v low 19%
Geraldton Airport 27.6   41.0 13 Nov 12.6   3.8 2 Sep 32.2
Kalbarri 28.1 +1.9 40.5 14 Nov 14.3 +1.5 5.0 4 Sep 30.6 45.7 low 67%
Morawa Airport 30.1 +2.4 41.2 12 Nov 12.9 +1.9 1.5 3 Sep 40.8 44.3 average 92%
North Island 24.7 +1.1 33.9 21 Nov 17.8 +0.6 10.4 4 Oct 17.6 36.2 low 49%
Wongan Hills 28.1 +3.1 39.0 14 Nov 11.8 +1.5 1.6 2 Sep 43.4 62.0 low 70%
Central Coast (district 09)
Badgingarra Research Stn 27.3 +2.9 40.3 14 Nov 11.2 +1.4 2.3 4 Sep 33.2 99.9 lowest 33%
Bickley 23.7 +2.5 36.6 14 Nov 11.3 +1.4 2.8 2 Sep 152.2 233.5 low 65%
Garden Island HSF 22.4 +1.2 36.6 14 Nov 14.8 +1.0 7.0 2 Sep 78.8 119.2 v low 66%
Gingin Aero 26.9 +2.7 40.6 14 Nov 10.0 +0.4 1.0 2 Sep 56.0 140.2 v low 40%
Gosnells City 26.5 +2.3 39.0 14 Nov 13.6 +1.4 4.4 2 Sep   157.4    
Jandakot Aero 25.4 +2.4 38.8 14 Nov 11.3 +1.1 0.4 2 Sep 101.4 163.7 low 62%
Karnet 23.7 +2.8 35.8 14 Nov 10.4 +1.2 1.4 2 Sep 145.8 259.2 v low 56%
Pearce RAAF 27.3 +3.8 40.7 14 Nov 11.5 +1.0 2.8 2 Sep 55.8 128.3 v low 43%
Perth Airport 26.2 +3.3 39.2 14 Nov 12.2 +1.6 1.7 2 Sep 82.4 143.4 v low 57%
Perth Metro 25.9 +2.5 39.4 14 Nov 13.0 +1.2 2.8 2 Sep 93.0 155.6 low 60%
Rottnest Island 22.3 +1.5 36.1 14 Nov 15.5 +1.2 8.8 2 Sep 79.4 113.7 low 70%
Swanbourne 24.3 +1.8 37.4 14 Nov 14.0 +1.3 4.8 2 Sep 115.6 151.6 low 76%
South Coast (district 09A)
Albany 20.0 +1.3 31.2 1 Oct 12.6 +1.9 7.1 17 Sep 129.5 225.4 v low 57%
Albany Airport 21.1   33.3 17 Nov 10.5   2.4 17 Sep 158.6
Bridgetown 23.2 +2.5 36.5 14 Nov 8.5 +1.0 -0.5 2 Sep 97.8 165.9 low 59%
Bunbury 23.0 +1.7 35.0 22 Nov 10.9 +0.9 0.8 2 Sep 97.2 141.2 low 69%
Busselton Aero 23.2 +1.7 35.2 22 Nov 9.8 +0.8 1.3 2 Sep 71.2 135.2 v low 53%
Cape Leeuwin 20.2 +1.7 27.6 23 Sep 14.3 +1.4 8.7 1 Sep 83.4 192.1 lowest 43%
Cape Naturaliste 21.6 +2.4 31.9 22 Nov 12.3 +1.0 5.7 2 Sep 77.2 151.9 v low 51%
Collie East 24.3 +2.6 36.5 14 Nov 8.3 +0.6 -1.0 16 Sep 110.4 167.8 low 66%
Donnybrook 24.8 +3.2 37.4 14 Nov 10.5 +1.9 1.3 2 Sep 92.8 199.4 v low 47%
Dwellingup 23.9 +3.6 37.4 14 Nov 9.8 +1.5 1.0 2 Sep 129.0 257.2 v low 50%
Esperance 23.5 +2.3 41.5 17 Nov 12.4 +1.4 4.3 3 Sep 103.6 142.3 low 73%
Esperance Aero 24.2 +2.7 40.3 17 Nov 11.2 +1.2 3.3 3 Sep 104.0 140.6 low 74%
Hopetoun North 21.7 0.0 37.5 17 Nov 10.0 -0.4 1.6 3 Sep 102.6 129.2 low 79%
Jarrahwood 23.7 +2.8 35.5 22 Nov 8.5 +0.8 -1.8 2 Sep 122.2 205.8 v low 59%
Mandurah 23.6 +1.8 36.2 13 Nov 14.5 +0.8 6.6 2 Sep 60.4 128.3 v low 47%
Manjimup 22.7 +3.6 36.8 14 Nov 9.9 +1.4 2.8 6 Oct 101.0 230.6 v low 44%
North Walpole 20.4 +1.3 31.3 14 Nov 11.4 +0.9 6.3 17 Sep 182.6 245.7 average 74%
Rocky Gully 21.9 +2.3 36.9 14 Nov 9.6 +1.3 1.4 16 Sep 109.0 191.5 low 57%
Shannon 21.0 +2.0 35.7 14 Nov 9.6 +1.1 2.3 21 Sep 141.2 252.5 v low 56%
Witchcliffe 21.6 +1.7 35.4 22 Nov 10.1 +0.5 2.7 2 Sep 140.6 213.2 low 66%
North Central (district 10)
Bencubbin 27.4 +2.3 37.8 14 Nov 12.2 +2.1 0.3 2 Sep 45.4 51.4 average 88%
Cunderdin Airfield 28.6 +3.0 40.7 22 Nov 9.8 +1.3 -0.5 2 Sep 27.8 61.2 v low 45%
Merredin     37.8 22 Oct 12.1 +2.2 1.4 2 Sep 44.0 59.1 average 74%
Northam 27.9 +3.5 39.7 22 Nov 10.4 +1.0 0.0 2 Sep 39.7 74.4 low 53%
York 28.1 +3.4 40.0 14 Nov 8.1 +0.3 -2.0 2 Sep 44.3 77.5 low 57%
South Central (district 10A)
Beverley 28.0 +3.6 39.6 22 Nov 9.4 +0.9 -1.4 2 Sep 45.8 75.0 low 61%
Brookton 26.7 +3.4 39.0 14 Nov 9.3 +1.3 -1.0 6 Oct 40.6 78.4 low 52%
Corrigin 27.0 +3.9 38.9 22 Nov 9.8 +1.3 0.0 4 Sep 52.6 68.0 average 77%
Hyden 27.9 +3.4 39.3 22 Oct 10.4 +1.8 -1.0 2 Sep 43.4 69.3 low 63%
Jacup 24.3 +2.6 38.6 23 Nov 9.0 +1.1 1.0 6 Sep 59.0 115.9 low 51%
Katanning 24.4 +2.6 37.5 14 Nov 9.4 +1.5 0.4 6 Oct 56.0 111.7 low 50%
Lake Grace 25.8 +2.6 38.3 23 Nov 10.5 +1.4 1.0 6 Sep 62.2 83.0 low 75%
Narembeen 27.9 +3.2 38.5 23 Nov 11.1 +2.0 0.0 2 Sep
Narrogin 25.4 +3.9 37.5 14 Nov 9.8 +1.9 0.4 20 Sep 51.2 96.2 v low 53%
Newdegate Research Station 25.9 +2.8 39.3 23 Nov 7.8 +0.5 -1.8 21 Sep 63.8 79.0 average 81%
Ongerup 24.0 +2.9 36.6 23 Nov 9.9 +1.5 1.2 6 Sep 76.6 97.7 average 78%
Pingelly 26.1 +3.8 38.4 22 Nov 10.1 +1.3 1.2 2 Sep 47.0 81.3 low 58%
Ravensthorpe 24.7 +2.3 38.5 17 Nov 11.1 +1.9 1.0 3 Sep 89.8 110.1 average 82%
Wagin 25.4 +3.5 38.0 14 Nov 9.9 +1.6 1.5 4 Sep 52.3 88.3 low 59%
Wandering 25.5 +2.9 38.5 14 Nov 7.5 +0.6 -2.2 16 Sep 61.8 108.3 low 57%
Eucla (district 11)
Eucla 24.8 +1.8 42.3 3 Oct 12.9 +1.6 4.9 15 Sep 48.4 58.7 average 82%
Eyre 24.8 +1.9 41.0 2 Oct 10.6 +0.6 -2.7 8 Sep 86.9 64.5 high 135%
Forrest 29.2 +2.0 42.6 17 Nov 11.7 +1.1 3.0 8 Sep 63.8 49.4 average 129%
Red Rocks Point 22.3 -0.3 38.7 3 Oct 13.3 +1.0 4.8 26 Sep 58.0 67.5 low 86%
South East (district 12)
Bulga Downs 31.4 +1.9 43.2 16 Nov 14.3 +0.9 1.6 2 Sep 24.0 27.0 average 89%
Kalgoorlie-Boulder Airport 28.6 +2.9 40.9 17 Nov 13.5 +2.4 -0.2 2 Sep 43.8 48.1 average 91%
Laverton Aero 31.0 +3.0 42.8 16 Nov 15.9 +2.0 1.3 2 Sep 14.8 41.8 low 35%
Leonora Aero 31.1   43.4 16 Nov 15.9   1.8 2 Sep 17.0
Munglinup West 25.5 +2.4 41.8 17 Nov 10.7 +1.3 2.8 3 Sep 88.4 114.5 average 77%
Norseman Aero 27.7 +2.1 42.1 17 Nov 10.6 +1.2 -0.7 14 Sep 69.8 77.9 average 90%
Salmon Gums Res.Stn. 26.2 +2.8 42.1 17 Nov 9.3 +1.5 -2.0 21 Sep 65.4 86.5 average 76%
Southern Cross Airfield 28.2 +2.2 39.2 15 Nov 10.8 +1.5 -1.2 2 Sep 64.0 56.5 average 113%
Yeelirrie 32.2 +2.5 43.0 16 Nov 13.4 +1.1 -1.0 2 Sep 9.7 24.3 average 40%
North East (district 13)
Balgo Hills 37.5 +0.9 43.5 23 Nov     12.9 15 Sep 79.8 39.4 high 203%
Carnegie 34.3 +1.9 43.6 17 Nov 16.4 +0.7 4.9 2 Sep 33.8 22.6 high 150%
Giles Meteorological Office 33.4 +2.2 41.1 2 Nov 18.1 +1.4 6.4 2 Sep 95.4 54.5 high 175%
Telfer Aero 38.4 +1.9 45.5 30 Nov 22.0 +1.7 11.8 3 Sep 6.4 21.4 low 30%
Warburton Airfield 33.6 +2.2 43.2 18 Nov 18.4 +3.1 5.2 2 Sep 47.8 45.5 high 105%
Offshore Islands (district 200)
Adele Island 30.5   33.2 4 Oct 24.0   19.9 28 Sep
Browse Island 30.3   33.5 25 Nov 27.0   24.2 3 Sep
Christmas Island Aero 27.9 +1.1 29.6 23 Nov 23.5 +0.9 21.9 10 Sep 30.4 250.3 low 12%
Cocos Island Airport 29.3 +0.6 30.4 16 Nov 25.2 +1.0 22.0 15 Sep 42.4 276.6 v low 15%
Note: Observations for “Perth Metro” are taken from the current site at Mount Lawley (Bureau number 009225).
Comparisons are made against combined data from the current site (which opened in early 1993) and the previous site at Perth Regional Office (009034), which ran from 1876 to early 1992.

Notes

The Seasonal climate summary 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. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

A climate summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 10 am on Tuesday 1 December 2015. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

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.

Observations for “Perth Metro” are taken from the current site at Mount Lawley (Bureau number 009225).
Comparisons are made against combined data from the current site (which opened in early 1993) and the previous site at Perth Regional Office (009034), which ran from 1876 to early 1992.

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.

The ACORN-SAT dataset is used for temperature area averages.

Further information

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Service notice

Network problems on 8 January disrupted processing of observations, affecting some climate information. Missing data are being retrieved and will be processed into our systems over coming weeks.