Western Australia in September 2016: Unusually cold in the south, hot in the far north

September 2016 rainfall was generally near average to below average across much of the State, but above average in parts of the Kimberley. Most of WA recorded cooler than normal daytime and overnight temperatures, apart from the far north of the State, and both mean maximum and minimum temperatures for the whole State were below average as a result. The South West Land Division (SWLD) in particular recorded unusually low temperatures and the mean minimum temperature for the month was the lowest in September on record.

Below average to near average rainfall for most of WA; above average rainfall in parts of the Kimberley

Cooler days and nights for most WA; hot in the far north

  • The mean maximum temperature for WA was about 0.5 °C below average and the coolest September for six years, since 2010
  • The SWLD mean maximum temperature was about 1.4 °C below average, the equal tenth-coolest September on record
  • The mean minimum temperature for WA was about 0.7 °C below average and the lowest for five years, since 2011
  • The SWLD mean minimum temperature was about 2.1 °C below average and the lowest in September on record
  • Unusually hot conditions in the Kimberley set several daily and monthly temperatures records
  • Wyndham Aerodrome (Kimberley) recorded Australia's highest mean maximum temperature on record in September (39.2 °C), including ten days with daily maxima of 40 °C or higher, which is also a national record for the number of such days in September
  • Other extremes in the Kimberley including hottest September day at Argyle Aerodrome on the 27th, record high September mean maximum temperature at Warmun, and highest September mean maximum since 1992 at Doongan
  • A daily minimum temperature of 30.0 °C at Warmun on the 30th was a national record for the highest minimum temperature in September; a few other sites in the Kimberley also had their warmest September night on record
  • Broome Airport and other Kimberley sites recorded their highest September mean minimum temperature on record; only old Broome Post Office site's mean minimum temperature of 21.4 °C in September 1910 was higher than the Broome Airport's new record
  • In contrast to the north, a number of sites in southwest WA had their lowest September mean maximum temperature on record, and many sites in the southern half of WA had their coldest September since 1992
  • Several sites across southern WA recorded their coldest September night on record during the month, whilst numerous sites in western and southern WA registered their lowest September mean minimun temperature on record
  • A high number of very cold nights were observed in the SWLD during the month; Cunderdin Airfield (Central Wheat Belt) recorded eight times with minimum temperatures 0 °C or lower, which was its highest number of such nights in September in 67 years of record

Frost in the South West Land Division (SWLD)

  • Freezing temperatures caused significant frost damage to crops in parts of the SWLD in mid-to-late September

Further information

Media
(03) 9669 4057
Enquiries

Extremes in September 2016
Hottest day 41.8 °C at Wyndham Aero on the 26th
Warmest days on average 39.2 °C at Wyndham Aero
Coolest days on average 14.3 °C at Shannon
Coldest day 10.0 °C at Wongan Hills on the 12th
Coldest night -4.5 °C at Eyre on the 18th
Coolest nights on average 2.5 °C at Newdegate Research Station
Warmest nights on average 26.8 °C at Troughton Island
25.2 °C at Argyle Aerodrome
Warmest night 30.0 °C at Warmun on the 28th
Warmest on average overall 32.0 °C at Wyndham Aero
Coolest on average overall 9.3 °C at Wandering
Wettest overall 164.4 mm at Pemberton
Wettest day 39.0 mm at Theda on the 23rd
Strongest wind gust 111 km/h at Cape Leeuwin on the 7th

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 September daily rainfall
New record
(mm)
Old
record
Years of
record
Christmas Island Aero 138.8 on the 26th 94.2 on the 11th in 1975 43



Record highest September total rainfall
New record
(mm)
Old
record
Years of
record
Average for
September
Christmas Island Aero 702.4 346.0 in 1975 42 57.4
Kununurra Aero 62.8 62.2 in 1981 41 4.3

Highest September total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
September
Wyndham 20.2 47.8 in 1978 4.1
Anna Plains 15.8 23.0 in 1984* 0.8

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




Record highest September temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Argyle Aerodrome 41.3 on the 27th 40.8 on the 26th in 2013 23 36.5



Record lowest September daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Wongan Hills 10.0 on the 12th 10.1 on the 19th in 1992 50 20.7



Record highest September mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Warmun 38.3 38.1 in 1995 54 36.1

Highest September mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
September
Doongan 36.6 36.8 in 1992* 35.3

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




Record lowest September mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Lancelin 18.5 = 18.5 in 1992 48 20.6
Jandakot Aero 18.0 18.6 in 2009 26 20.1
Rottnest Island 17.0 = 17.0 in 1992 26 18.9
Gosnells City 19.0 = 19.0 in 2009 23 20.9
Jacup 16.6 16.9 in 2009 23 18.9
Swanbourne 17.7 18.4 in 2009 23 20.0
Bickley 15.5 = 15.5 in 2009 22 17.6
Perth Metro 18.5 18.6 in 2009 22 20.4

Lowest September mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
September
Cape Leeuwin 15.8 15.5 in 1941 17.1
Beverley 18.2 17.4 in 1992 20.4
Cape Naturaliste 16.8 16.5 in 1992 17.4
Kalbarri 22.5 21.8 in 1992 24.0
Murchison 24.2 22.6 in 1992 26.3
Northam 18.2 17.8 in 1992 20.5
Perth Airport 18.5 18.2 in 1992 20.2
Pingelly 16.4 15.4 in 1992 18.4
Ravensthorpe 17.2 15.8 in 1992 19.5
Wagin 16.1 15.6 in 1992 18.2
Wongan Hills 18.2 17.2 in 1992 20.7
Denham 22.4 21.8 in 1992* 23.9
Bencubbin 18.4 17.4 in 1992* 21.0
Medina Research Centre 18.3 18.1 in 1992* 20.4
Mullewa 21.7 20.0 in 1992* 23.5
Windy Harbour 15.9 15.8 in 1992* 17.7
Albany 15.9 15.6 in 1958* 17.3
Salmon Gums Res.Stn. 18.7 16.6 in 1992* 20.4

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




Record highest September daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Warmun 30.0 on the 28th 29.2 on the 29th in 1990 55 19.3
Troughton Island 27.9 on the 30th 27.7 on the 29th in 2010 38 24.5
Eyre 18.0 on the 7th 17.9 on the 8th in 1985 29 7.7
Argyle Aerodrome 29.3 on the 28th 28.3 on the 25th in 2005 23 22.2



Record lowest September temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Wagin -1.4 on the 29th -1.3 on the 11th in 1977 42 6.3
Jarrahwood -2.1 on the 29th -2.0 on the 12th in 2004 35 6.1
Esperance Aero 2.7 on the 26th 3.0 on the 11th in 2004 25 8.4
Forrest -0.4 on the 18th 0.4 on the 11th in 2004 24 8.3
Gosnells City 2.0 on the 15th 2.6 on the 10th in 2004 24 10.2
Morawa Airport 0.6 on the 24th 0.8 on the 4th in 2009 20 7.7



Record highest September mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Broome Airport 20.9 20.8 in 2005 77 18.5
Bidyadanga 20.0 19.7 in 2010 55 17.5
Warmun 23.3 23.0 in 1981 54 19.3
Troughton Island 26.8 26.4 in 2010 37 24.5
Curtin Aero 20.7 20.6 in 2010 24 18.2
Argyle Aerodrome 25.2 24.3 in 1995 22 22.2



Record lowest September mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Northam 4.1 4.3 in 2004 111 6.8
Narrogin 3.6 3.8 in 1954 98 6.0
Dwellingup 4.5 = 4.5 in 1969 78 6.5
Kalgoorlie-Boulder Airport 5.7 6.0 in 1968 75 8.0
Perth Airport 6.8 7.0 in 1949 72 8.9
Corrigin 3.8 4.2 in 1975 68 5.8
Pearce RAAF 6.2 7.0 in 1969 55 8.8
Merredin 4.3 4.8 in 1973 50 6.8
Karnet 4.8 5.6 in 1969 49 7.3
Wongan Hills 5.2 5.9 in 1966 49 7.7
Brookton 3.7 = 3.7 in 1979 48 5.4
Beverley 3.3 3.7 in 1969 46 5.9
Narembeen 3.9 4.2 in 1978 45 6.2
Pingelly 4.0 5.2 in 1973 44 6.5
Learmonth Airport 12.0 12.5 in 1993 41 13.8
Wagin 4.1 4.3 in 2010 41 6.3
Paynes Find 5.3 6.1 in 1975 37 8.1
Medina Research Centre 6.8 7.0 in 1987 31 9.2
Carnegie 9.4 9.7 in 2011 26 11.6
Rottnest Island 11.1 11.3 in 1992 26 12.9
Forrest 5.7 6.7 in 1994 23 8.3
Gosnells City 6.1 8.4 in 1991 23 10.2
Swanbourne 9.1 9.6 in 2004 23 11.0
Bickley 6.3 6.9 in 2005 22 8.3
Leinster Aero 8.3 9.2 in 2010 22 10.7
Perth Metro 7.6 8.0 in 2004 22 9.6
Mount Magnet Aero 8.2 9.0 in 2011 21 10.4
Bunbury 6.3 6.5 in 2004 20 8.6
Gingin Aero 5.3 5.6 in 2004 20 7.5
Paraburdoo Aero 12.0 12.1 in 1997 20 13.6
Rocky Gully 5.2 5.7 in 2010 20 7.2

Lowest September mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
September
Bencubbin 4.9 4.6 in 1958* 7.2
Cape Naturaliste 8.9 7.8 in 1969 10.4
Ongerup 4.7 4.4 in 1969* 6.5
Donnybrook 5.4 4.6 in 1969* 7.1
Manjimup 5.8 5.6 in 1969* 7.2
Giles Meteorological Office 10.4 9.4 in 1978 13.0
Hyden 4.2 =4.2 in 1975* 5.9
Lancelin 8.9 8.5 in 1977* 10.6
Eucla 7.9 7.7 in 1990 9.2
Cape Leeuwin 10.5 10.4 in 1992 11.8
Laverton Aero 8.4 8.2 in 1992 10.5
Mullewa 6.6 6.3 in 1990* 8.6

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




Record highest September mean temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Warmun 30.8 30.3 in 1992 54 27.7
Troughton Island 29.3 29.0 in 2010 37 27.4
Cygnet Bay 26.9 26.7 in 2010 29 25.1
Argyle Aerodrome 31.4 31.0 in 1995 22 29.3

Highest September mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
September
Kununurra Aero 30.1 30.3 in 1992 28.3



Record lowest September mean temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Northam 11.1 11.6 in 1978 111 13.7
Narrogin 9.8 9.9 in 1969 97 11.9
Dwellingup 10.0 10.3 in 1935 78 11.9
Perth Airport 12.6 13.4 in 1968 72 14.5
Bencubbin 11.7 11.8 in 1958 65 14.1
Pearce RAAF 12.4 12.9 in 1992 55 14.4
Merredin 11.5 11.6 in 1966 50 13.7
Karnet 10.2 10.7 in 1968 49 12.4
Lancelin 13.7 14.1 in 1969 48 15.6
Beverley 10.8 11.0 in 1969 46 13.1
Jarrahwood 10.4 10.9 in 1992 34 12.1
Medina Research Centre 12.5 12.9 in 1992 31 14.8
Jandakot Aero 12.1 12.8 in 2004 26 14.2
Rottnest Island 14.1 14.2 in 1992 26 15.9
Jacup 10.8 11.1 in 2009 23 12.6
Swanbourne 13.4 14.5 in 1998 23 15.5
Bickley 10.9 11.6 in 2009 22 12.9
Leinster Aero 15.7 15.9 in 2010 22 18.2
Perth Metro 13.0 14.0 in 1998 22 15.0
Mount Magnet Aero 15.5 15.9 in 2009 21 17.5
Bunbury 11.7 12.5 in 2004 20 13.6
Gingin Aero 12.0 13.0 in 2004 20 14.1
Newdegate Research Station 9.6 10.4 in 2009 20 11.9
Paraburdoo Aero 20.8 21.4 in 1998 20 22.5
Rocky Gully 9.9 10.0 in 2009 20 11.9
York 10.8 11.4 in 2004 20 12.5

Lowest September mean temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
September
Ongerup 10.3 10.1 in 1969* 12.2
Cape Leeuwin 13.1 13.0 in 1971 14.4
Kalbarri 15.8 14.9 in 1971* 17.4
Albany 12.5 12.4 in 1952* 13.3
Cape Naturaliste 12.8 =12.8 in 1992 13.9
Hyden 11.6 =11.6 in 1992 13.2
Learmonth Airport 20.3 19.8 in 1992 21.6
Manjimup 10.5 =10.5 in 1992 11.9
Meekatharra Airport 17.0 16.2 in 1992 18.6
Yeelirrie 14.8 14.6 in 1992 16.9

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




Summary statistics for September 2016
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
September
2016
Diff
from
average
Highest for
September
2016
Mean for
September
2016
Diff
from
average
Lowest for
September
2016
Total for
September
2016
Average
for
September
Rank of
September
2016
Fraction of
September
average
North Kimberley (district 01)
Doongan 36.6 +1.3 39.1 27th 19.8 +2.3 15.5 4th 0 5.4 lowest 0%
Kalumburu 37.5 +1.8 41.0 29th 22.5 +3.5 20.0 8th 6.6 1.8 high 367%
Troughton Island 31.8 +1.5 33.3 28th 26.8 +2.3 25.5 6th 0 0.3 lowest 0%
Truscott 34.1 +0.7 37.1 29th     22.9 9th 0 0.2 v low 0%
Wyndham Aero 39.2 +1.5 41.8 26th 24.7 +3.2 21.5 8th 8.8 3.8 high 232%
East Kimberley (district 02)
Argyle Aerodrome 37.7 +1.2 41.3 27th 25.2 +3.0 19.7 6th 0.4 2.4 average 17%
Halls Creek Airport 35.3 +1.2 38.5 26th 21.2 +2.2 16.3 3rd 0.6 4.4 average 14%
Kununurra Aero 37.7 +1.0 40.7 28th 22.5 +2.6 18.5 8th 62.8 4.3 highest 1460%
Warmun 38.3 +2.2 41.2 27th 23.3 +4.0 17.3 3rd 0 4.4 lowest 0%
West Kimberley (district 03)
Bidyadanga 33.1 +0.2 36.8 29th 20.0 +2.5 15.7 3rd 1.5 1.3 high 115%
Broome Airport 32.3 +0.5 37.1 30th 20.9 +2.4 15.4 3rd 0.2 1.4 low 14%
Curtin Aero 36.7 +0.1 39.7 30th 20.7 +2.5 16.6 12th 0 0.2 lowest 0%
Cygnet Bay 33.4 +0.9 36.7 30th 20.4 +2.7 15.5 3rd 0 1.3 lowest 0%
Derby Aero 36.8 +1.4 39.0 10th 21.2 +1.8 17.3 3rd 0 1.0 lowest 0%
Fitzroy Crossing Aero 37.1 -0.3 40.4 27th 19.4 +0.9 15.0 21st 0 0.3 lowest 0%
De Grey (district 04)
Bedout Island 28.3   30.1 8th 22.1   19.5 3rd
Karratha Aero 30.2 -0.6 33.3 26th 16.7 -0.2 13.1 2nd 0.2 1.3 high 15%
Legendre Island 27.7   30.3 26th 20.0   18.2 2nd
Mandora 32.8 -1.0 35.7 8th 16.7 +1.0 11.8 11th 4.0 1.0 v high 400%
Marble Bar 33.0 -1.7 36.8 12th 17.1 +0.5 13.6 22nd 0 4.4 v low 0%
Pardoo Station 32.5 -0.6 35.0 9th 16.2 +0.3 12.5 25th 1.9 2.8 high 68%
Port Hedland Airport 31.6 -0.8 34.5 8th 17.1 +1.7 14.0 21st 0 1.2 lowest 0%
Roebourne Aero 32.5 -0.8 36.0 12th 15.0 -0.4 11.6 21st 0 2.3 v low 0%
Fortescue (district 05)
Barrow Island Airport 26.3 -0.7 29.9 27th 19.2 -0.3 15.7 15th 7.4 1.2 high 617%
Learmonth Airport 28.6 -0.8 33.0 27th 12.0 -1.8 8.6 21st 0 1.9 lowest 0%
Mardie 31.1 -1.2 35.0 28th 14.2 -0.2 11.5 13th 0 1.3 lowest 0%
Onslow Airport 29.7 -0.4 34.3 27th 15.4 0.0 13.2 3rd 1.0 1.4 high 71%
Wittenoom 30.8 -0.4 35.2 11th 16.2 -0.6 10.9 2nd 0 3.0 lowest 0%
West Gascoyne (district 06)
Carnarvon Airport 23.9 -0.6 27.6 21st 12.6 -1.3 7.6 29th 1.6 5.9 low 27%
Denham 22.4 -1.5 24.5 4th 15.5 +0.6 14.0 1st 3.6 7.9 average 46%
Murchison 24.2 -2.1 29.6 21st 8.3 -1.3 4.0 18th 0.8 7.4 low 11%
Shark Bay Airport 24.3 -1.7 30.5 21st 11.5 -1.3 7.1 29th 2.6 8.3 v low 31%
East Gascoyne (district 07)
Newman Aero 28.7 -1.8 34.1 11th 10.6 -1.6 6.1 21st 0 4.0 lowest 0%
Paraburdoo Aero 29.5 -1.9 33.7 27th 12.0 -1.6 8.5 25th 0 3.1 lowest 0%
Murchison (district 07A)
Meekatharra Airport 24.6 -1.1 31.5 6th 9.6 -1.9 5.9 17th 1.4 4.6 average 30%
Mount Magnet Aero 22.9 -1.8 30.9 6th 8.2 -2.2 3.9 29th 6.6 8.9 average 74%
Paynes Find 21.8 -2.0 28.5 6th 5.3 -2.8 0.4 17th 2.2 14.3 low 15%
North Coast (district 08)
Dalwallinu 18.9 -2.2 25.8 21st 4.8 -2.1 0.3 29th 14.0 25.9 low 54%
Geraldton Airport 20.4   26.5 21st 6.7   2.5 18th 17.8
Kalbarri 22.5 -1.5 26.3 3rd 9.2 -1.7 5.2 20th 12.7 23.9 low 53%
Morawa Airport 21.1 -2.1 28.4 21st 5.4 -2.3 0.6 24th 15.0 24.0 low 63%
Mullewa 21.7 -1.8 28.5 21st 6.6 -2.0 2.7 17th 13.4 21.7 average 62%
North Island 21.0 -1.2 23.2 22nd 14.7 -1.3 11.0 6th 10.4 21.1 low 49%
Wongan Hills 18.2 -2.5 24.5 21st 5.2 -2.5 0.8 18th 25.4 29.7 average 86%
Central Coast (district 09)
Badgingarra Research Stn 18.1 -2.5 23.9 21st     1.3 24th 0 49.9 lowest 0%
Bickley 15.5 -2.1 20.9 4th 6.3 -2.0 2.1 29th 98.6 125.9 average 78%
Garden Island HSF 16.7 -2.3 18.5 6th 9.8 -2.3 6.8 18th 81.6 67.1 high 122%
Gingin Aero 18.8 -1.9 24.0 21st 5.3 -2.2 0.6 18th 47.4 83.2 low 57%
Gosnells City 19.0 -1.9 23.6 21st 6.1 -4.1 2.0 15th 72.8 82.5 average 88%
Jandakot Aero 18.0 -2.1 22.3 21st 6.1 -2.2 1.7 18th 74.0 86.4 average 86%
Jurien Bay 19.9 -1.4 23.2 4th 7.6 -2.4 3.4 29th 28.3 44.7 low 63%
Karnet 15.5 -2.1 19.8 4th 4.8 -2.5 0.6 24th 122.2 134.2 average 91%
Lancelin 18.5 -2.1 21.5 4th 8.9 -1.7 5.6 15th 52.3 56.6 average 92%
Medina Research Centre 18.3 -2.1 21.1 6th 6.8 -2.4 3.0 18th 91.1 77.7 average 117%
Pearce RAAF 18.6 -1.5 23.5 21st 6.2 -2.6 2.2 1st 50.2 69.2 low 73%
Perth Airport 18.5 -1.7 23.4 21st 6.8 -2.1 3.1 18th 61.0 73.1 average 83%
Perth Metro 18.5 -1.9 23.1 21st 7.6 -2.0 3.7 18th 68.8 81.1 average 85%
Rottnest Island 17.0 -1.9 19.6 21st 11.1 -1.8 8.0 19th 64.8 54.2 average 120%
Swanbourne 17.7 -2.3 20.3 4th 9.1 -1.9 6.7 18th 90.0 82.6 average 109%
South Coast (district 09A)
Albany 15.9 -1.4 21.1 21st 9.0 -0.3 6.0 24th 102.2 101.6 average 101%
Albany Airport 16.0   20.6 21st 6.8   3.3 24th 99.4
Bridgetown 15.6 -2.1 19.4 5th 4.0 -2.1 -1.9 17th 64.2 91.0 low 71%
Bunbury 17.0 -1.6 19.3 5th 6.3 -2.3 0.3 17th 63.6 84.3 average 75%
Busselton Aero 16.6 -1.8 20.5 5th 6.3 -1.5 0.9 17th 58.4 77.8 low 75%
Cape Leeuwin 15.8 -1.3 18.4 5th 10.5 -1.3 6.4 29th 92.8 90.9 average 102%
Cape Naturaliste 16.8 -0.6 19.5 21st 8.9 -1.5 5.6 29th 50.2 76.4 low 66%
Collie East 16.4 -2.0 21.5 5th 3.5 -2.2 -1.4 17th 73.2 96.1 average 76%
Donnybrook 17.1 -1.7 21.0 5th 5.4 -1.7 1.4 24th 88.4 103.1 average 86%
Dwellingup 15.6 -1.7 20.4 4th 4.5 -2.0 0.6 24th 103.8 131.4 average 79%
Esperance 18.2 -1.2 31.3 6th 8.7 -0.8 4.9 26th 78.6 61.6 high 128%
Esperance Aero 17.6 -1.4 28.7 6th 7.5 -0.9 2.7 26th 95.2 58.5 high 163%
Hopetoun North 17.9 -2.3 30.1 6th 8.1 -0.4 4.1 26th 89.4 53.6 high 167%
Jarrahwood 16.5 -1.7 21.0 5th 4.2 -1.9 -2.1 29th 88.8 106.2 average 84%
Mandurah 17.2 -1.9 19.7 4th 9.3 -2.6 6.2 29th 52.4 68.3 average 77%
Manjimup 15.1 -1.5 19.6 21st 5.8 -1.4 1.6 17th 113.4 108.9 average 104%
North Walpole 15.5 -1.9 19.9 21st 8.0 -1.3 4.7 15th 142.8 110.9 high 129%
Rocky Gully 14.7 -1.9 19.1 21st 5.2 -2.0 1.4 17th 89.6 96.9 average 92%
Shannon 14.3 -2.2 19.0 21st 6.1 -1.3 1.4 29th 87.4 113.2 low 77%
Windy Harbour 15.9 -1.8 18.2 21st 8.6 -0.8 2.9 14th 115.3 113.7 average 101%
Witchcliffe 15.7 -1.8 18.1 5th 7.3 -1.4 1.5 17th 122.2 114.8 average 106%
North Central (district 10)
Bencubbin 18.4 -2.6 25.5 5th 4.9 -2.3 0.0 24th 14.6 21.9 average 67%
Cunderdin Airfield 18.6 -2.3 24.4 21st 2.6 -2.4 -2.3 17th 17.6 26.9 low 65%
Merredin 18.8 -1.7 27.0 5th 4.3 -2.5 -0.5 26th 21.4 25.7 average 83%
Northam 18.2 -2.3 24.0 21st 4.1 -2.7 -0.2 18th 34.0 37.3 average 91%
York 18.6 -1.6 24.0 21st 2.7 -2.2 -2.0 29th 25.5 38.8 low 66%
South Central (district 10A)
Beverley 18.2 -2.2 23.6 5th 3.3 -2.6 -1.2 29th 30.4 36.3 average 84%
Brookton 17.5 -1.7 23.0 5th 3.7 -1.7 -1.0 15th 38.5 38.7 average 99%
Corrigin 18.0 -1.2 25.1 5th 3.8 -2.0 -2.1 29th 27.8 29.8 average 93%
Hyden 18.7 -1.7 27.0 5th 4.2 -1.7 -1.4 29th 14.4 27.8 low 52%
Jacup 16.6 -2.3 25.0 6th 4.9 -1.4 1.2 24th 63.0 44.7 high 141%
Katanning 15.1 -2.5 19.6 4th 4.1 -2.1 -0.1 29th 33.0 53.6 low 62%
Lake Grace 17.0 -2.3 24.5 5th 4.0 -2.5 -0.8 17th 20.8 28.3 average 73%
Narembeen 18.6 -1.9 27.1 5th 3.9 -2.3 -1.2 17th 20.4 26.0 average 78%
Narrogin 16.0 -1.7 21.5 21st 3.6 -2.4 -1.0 29th 40.6 46.6 average 87%
Newdegate Research Station 16.6 -2.3 24.5 5th 2.5 -2.4 -2.1 24th 27.2 33.5 average 81%
Ongerup 16.0 -1.9 21.8 5th 4.7 -1.8 1.0 14th 36.6 38.4 average 95%
Pingelly 16.4 -2.0 23.0 6th 4.0 -2.5 -0.4 29th 37.8 41.0 average 92%
Ravensthorpe 17.2 -2.3 27.0 6th 6.2 -1.2 1.5 26th 60.4 42.3 high 143%
Wagin 16.1 -2.1 21.2 21st 4.1 -2.2 -1.4 29th 35.6 41.2 average 86%
Wandering 15.9 -2.5 21.5 21st 2.7 -2.1 -1.9 29th 63.4 61.5 average 103%
Eucla (district 11)
Balladonia 21.0 -1.3 31.9 6th 5.2 -1.6 -0.8 26th 5.7 19.7 low 29%
Eucla 20.6 -0.7 31.7 7th 7.9 -1.3 2.6 25th 19.8 22.4 average 88%
Eyre 21.0 -0.3 33.0 6th 6.2 -1.5 -4.5 18th 18.2 23.8 average 76%
Forrest 22.0 -2.5 30.9 7th 5.7 -2.6 -0.4 18th 5.6 15.9 average 35%
Red Rocks Point 20.1 -1.3 28.4 7th 8.0 -2.1 3.6 15th 23.6 29.2 average 81%
South East (district 12)
Bulga Downs 23.0 -2.5 32.5 6th 6.4 -2.6 1.1 15th 4.2 7.6 average 55%
Kalgoorlie-Boulder Airport 20.5 -1.8 32.5 6th     -0.2 17th 2.6 14.1 low 18%
Laverton Aero 22.2 -2.4 32.7 6th 8.4 -2.1 1.8 20th 4.4 7.8 average 56%
Leinster Aero 23.1 -2.5 32.7 6th 8.3 -2.4 3.5 17th 0 3.9 lowest 0%
Leonora Aero 22.7   33.0 6th 8.1   3.9 2nd 2.4 7.9 average 30%
Munglinup West 17.9 -2.2 31.0 6th 6.0 -1.4 1.3 24th 52.4 40.4 high 130%
Norseman Aero 20.3 -2.1 32.1 6th 4.2 -2.2 -2.9 26th 8.8 22.2 low 40%
Salmon Gums Res.Stn. 18.7 -1.7 30.9 6th 4.2 -1.6 -2.1 14th 27.0 31.9 average 85%
Southern Cross Airfield 19.8 -1.9 30.7 6th 2.8 -2.7 -2.9 17th 8.0 21.2 v low 38%
Yeelirrie 24.0 -1.9 34.0 6th 5.6 -2.3 0.0 15th 0.4 4.7 average 9%
North East (district 13)
Carnegie 25.8 -2.9 32.0 22nd 9.4 -2.2 5.0 20th 0 3.7 lowest 0%
Giles Meteorological Office 25.6 -1.9 32.1 23rd 10.4 -2.6 3.1 15th 2.8 10.4 average 27%
Telfer Aero 31.2 -1.7 37.2 12th 16.0 -0.5 10.5 30th 0 2.2 lowest 0%
Warburton Airfield 25.6 -2.4 31.9 6th 9.9 -1.5 0.9 15th 5.4 5.5 high 98%
Wiluna     33.2 6th 8.6 -1.4 4.0 18th 0 4.9 lowest 0%
Offshore Islands (district 200)
Browse Island 29.4   30.8 23rd 26.0   22.7 6th
Christmas Island Aero 26.7 +0.4 29.0 30th 23.1 +0.8 21.4 4th 702.4 57.4 highest 1224%
Cocos Island Airport 28.4 +0.2 29.5 5th 24.2 +0.3 22.4 9th 217.4 94.7 v high 230%
Rowley Shoals 26.9   28.8 27th 24.9   23.1 2nd
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 Monthly 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 9 am on Monday 3 October 2016. 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

Media
(03) 9669 4057
Enquiries