Western Australia in spring 2013: record warm spring nights for southwest WA

  • Rainfall: above average
  • Maximum temperature: 3rd warmest for WA; equal 9th warmest for southwest WA
  • Minimum temperature: 3rd warmest; warmest for southwest WA
  • Mean temperature: 2nd warmest; 3rd warmest for southwest WA

Rainfall

Rainfall during spring 2013 was above to very much above average in much of the Southwest Land Division (SWLD), Goldfields, Pilbara, Kimberley and adjacent Northern Interior, with a few locations in the Lower West, Great Southern, and Southwest observing their wettest spring on record due largely to record high rainfall in September. Cygnet Bay in the Kimberley also recorded its wettest spring as well as wettest spring day on record, mainly due to the passage of tropical cyclone Alessia near the region in late November. Parts of the far east inland Pilbara, western Northern and Southern Interior, and north Gascoyne coast saw below to very much below average spring rainfall.

Averaged across WA as a whole, spring 2013 rainfall was above average for the State, as a result of above average rainfall in September, a near average rainfall in October, and above average rainfall in November. The Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) also recorded above average spring rainfall, with September rainfall ranked sixth wettest on record, followed by below average rainfall in October and November.

Significant rainfall events in WA during spring 2013:

  • a trough and associated low moved across central and southeastern WA to bring widespread showers and thunderstorms to southern WA on 7 and 8 September. Moderate to heavy falls were recorded in parts of the SWLD and southern Goldfields and a number of locations in the Central Wheat Belt and South Coastal witnessed their wettest September day on record.
  • a strong cold front and associated low moved slowly across the SWLD from the evening of 13 September and on the 14th , bringing showers and thunderstorms and strong winds to western and southern WA with moderate to heavy falls near the coast. Bundilla, east of Albany, recorded its highest spring daily fall of 74.0 mm during the event.
  • two strong cold fronts moved across the SWLD on 22 and 23 September producing damaging winds and bringing showers to the SWLD. Cape Leeuwin recorded the highest wind gust in spring 2013 in WA on 22 September with a gust to 146 km/h, whilst Perivale Orchard (Southwest) recorded a daily total of 41.0 mm on the 22nd, its highest spring daily fall in 38 years of record.
  • a cold front and associated cloudband moved through the SWLD on 29 September bringing widespread rainfall to the SWLD, with moderate to heavy falls in the South Coastal and Southeast Coastal districts.
  •  a trough and cloudband developed off the west coast and passed over western and southern parts of WA on 9 October resulting in rainfall over much of the SWLD, southern Goldfields, and western Eucla, with moderate falls near the Central West and Lower West coasts, and in the Southeast Coastal.
  • an extensive cloudband moved across western and southern WA from 18 to 20 October bringing widespread rainfall to the southern Gascoyne, SWLD, southern Goldfields, and Eucla regions, with moderate falls in the western and southern SWLD.
  • frequent thunderstorm activity in the Kimberley during November with heavy falls reported, including 120.0 mm at Emma Gorge on the 22nd, the highest daily fall in WA during spring 2013
  • tropical cyclone Alessia brought moderate to heavy falls to the north Kimberley coast on the 23rd and 24th November. Cygnet Bay recorded its highest spring daily fall of 41.0 mm during the passage of Alessia.
  • a cloudband developed over the southern Goldfields and adjacent parts of neighbouring districts on the morning of 27 November and brought heavy rainfall to the region and a November daily record to Balladonia.

Maximum temperature

Mean daily maximum temperatures during spring 2013 were above to very much above average over most of WA. Mean maximum temperatures were up to 4 ºC above average in the Southern Interior as Warburton Airfield registered its warmest spring in 37 years of record. Giles Meteorological Office equalled its previous spring record from 57 years of recording that was set in 2012, whilst Yeelirrie in the northern Goldfields also recorded its warmest spring in 38 years of record.

When averaged across the State, the mean maximum temperature for spring 2013 was the third warmest on record, the result of a very warm September (ranked tenth warmest), a near record warm October (second warmest), and an above average November. The Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) recorded its equal ninth warmest spring on record due to a near average September, an above average October, and the eighth warmest November on record.

Fitzroy Crossing Aerodrome saw 29 consecutive days with a maximum temperature of 40 ºC or higher between 1 and 29 October, which equalled the longest hot spell (consecutive days of 40 ºC or higher) for any month in its 16 years of record. As a result, Fitzroy Crossing Aerodrome recorded a mean maximum of 42.0 ºC in October, the hottest October for the site in 16 years of record, and more notably, the highest mean maximum temperature for October recorded anywhere in Australia, exceeding the previous record of 41.9 ºC at Fitzroy Crossing Aerodrome in 2002.

During spring 2013, the highest temperature in WA was 46.4 ºC at Roebourne (Pilbara) on the 5 November, while the lowest maximum temperature was 11.2 ºC at Rocky Gully (Southeast Coastal) on 19 October.

Minimum temperature

Mean daily minimum temperatures during spring 2013 were above to very much above average over most of WA, with sites in the west Gascoyne and SWLD recording their warmest, or equal warmest, spring on record. Spring mean minimum temperatures up to 3 ºC warmer than normal were recorded in parts of the southern Gascoyne, Central West, and Central Wheat Belt, as well as in the southeastern Southern Interior and eastern Eucla.

When averaged across the State, the mean minimum temperature for spring 2013 was the third warmest since comparable records commenced in 1910, as a result of WA recording its equal fourth warmest September, ninth warmest October, and eighth warmest November. The Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) recorded its warmest spring on record, with a combination of the second warmest September, an above average October, and the second warmest November on record.

Argyle Aerodrome recorded the highest minimum temperature in spring 2013 in WA with 31.8 ºC on 17 November, whilst Eyre in the Eucla recorded the lowest on 14 October with -5.0 ºC. This is the lowest spring temperature on record in WA, exceeding the previous lowest of -4.6 ºC at Eyre on 26 September 1989.

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Extremes in spring 2013
Hottest day 46.4 C at Roebourne on 5 Nov
Warmest days on average 40.4 C at Fitzroy Crossing Aero
Coolest days on average 19.3 C at Cape Leeuwin
Coldest day 11.2 C at Rocky Gully on 19 Oct
Coldest night -5.0 C at Eyre on 14 Oct
Coolest nights on average 7.8 C at Newdegate Research Station
Warmest nights on average 26.8 C at Troughton Island
25.4 C at Argyle Aerodrome
25.4 C at Wyndham
Warmest night 31.8 C at Argyle Aerodrome on 17 Nov
Wettest overall 438.7 mm at Northcliffe
Wettest day 120.0 mm at Emma Gorge on 22 Nov
Highest wind gust 146 km/h at Cape Leeuwin on 22 Sep

Maps

Maps

Observed Anomaly Decile 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

Record highest spring daily rainfall

Highest daily rainfall
in spring 2013 (mm)
Previous wettest
for spring
Years of
record
Cygnet Bay 41.0 on 23 Nov 40.2 on 8 Nov 1975 50
Perivale Orchard 41.0 on 22 Sep 40.8 on 10 Nov 2010 38
Bundilla 74.0 on 15 Sep 56.0 on 21 Nov 2008 34



Record highest total spring rainfall

Total rainfall
for spring 2013 (mm)
Previous wettest
for spring
Years of
record
Average for
spring
Warner Glen 345.8 334.4 in 1971 62 209.6
Cygnet Bay 62.6 54.3 in 1975 49 8.8
Culford 229.6 209.8 in 2012 43 132.6
Jarrahwood 357.8 310.6 in 1999 39 210.0
Pickering Brook 355.8 331.2 in 1996 36 230.1




Record highest spring mean daily maximum temperature

Mean daily maximum
temperature
for spring 2013 (C)
Previous warmest
for spring
Years of
record
Average for
spring
Giles Meteorological Office 33.5 = 33.5 in 2012 57 31.1
Yeelirrie 31.9 31.7 in 2006 38 29.5
Warburton Airfield 34.3 34.0 in 2006 37 31.3



Record highest spring mean daily minimum temperature

Mean daily minimum
temperature
for spring 2013 (C)
Previous warmest
for spring
Years of
record
Average for
spring
Dwellingup 10.2 10.0 in 1982 73 8.3
Mullewa 13.5 = 13.5 in 2006 68 11.3
Carnarvon Airport 17.5 = 17.5 in 1982 67 16.3
Bencubbin 12.0 11.9 in 1982 62 10.0
Pearce RAAF 12.2 11.8 in 1982 52 10.4
Karnet 10.5 10.4 in 1982 45 9.2
Beverley 10.2 10.0 in 2006 43 8.4
Hyden 9.9 9.8 in 2006 40 8.5
Wagin 9.9 9.5 in 2006 38 8.2
Jarrahwood 9.6 9.1 in 2006 30 7.7




Record highest spring mean temperature

Mean daily
temperature
for spring 2013 (C)
Previous warmest
for spring
Years of
record
Average for
spring
Rottnest Island 18.6 18.6 in 2010 117 17.4
Perth Metro 18.8 18.7 in 1982 116 17.5
Dwellingup 16.1 15.9 in 2006 73 14.3
Geraldton Airport Comparison 19.4 = 19.4 in 2006 71 18.0
Perth Airport 18.5 18.3 in 2010 69 16.7
Bencubbin 19.2 19.1 in 1969 61 17.5
Pearce RAAF 18.7 18.2 in 1994 52 17.0
Beverley 18.0 17.9 in 2006 42 16.4
Jarrahwood 15.7 15.6 in 2006 30 14.2



Summary statistics for spring 2013

Maximum temperatures
for spring
(C)
Minimum temperatures
for spring
(C)
Rainfall
for spring
(millimetres)
Mean for
spring
2013
Diff
from
average
Highest for
spring
2013
Mean for
spring
2013
Diff
from
average
Lowest for
spring
2013
Total for
spring
2013
Average
for
spring
Rank of
spring
2013
Fraction of
spring
average
North Kimberley (district 01)
Doongan 36.2 -0.1 40.0 10 Oct

172.3 158.7 high 109%
Kalumburu 36.6 +0.1 40.7 25 Sep 22.2 +0.1 14.8 6 Sep 183.8 124.9 high 147%
Troughton Island 32.2 +0.6 34.5 19 Nov 26.8 +0.8 23.3 24 Nov 30.2 13.4 high 225%
Truscott 34.1 38.4 18 Sep 24.5 18.7 6 Sep 102.4 56.1 high 183%
Wyndham 38.7 +0.4 42.5 3 Nov 25.4 +0.2 18.9 7 Sep 150.0 83.2 high 180%
Wyndham Aero 39.6 +0.7 43.2 3 Nov 24.7 +0.3 18.1 7 Sep 125.2 81.0 high 155%
East Kimberley (district 02)
Argyle Aerodrome 38.8 +1.0 42.6 9 Oct 25.4 +0.9 18.7 8 Sep 81.8 97.1 average 84%
Halls Creek Airport 37.1 +0.6 41.9 10 Oct 23.3 +1.3 16.6 7 Sep 125.6 60.7 high 207%
Kununurra Aero 39.2 +1.2 42.8 9 Oct 22.3 -0.7 15.2 8 Sep 67.4 81.5 average 83%
Warmun 39.0 +1.0 42.5 18 Oct 24.1 +1.7 16.5 7 Sep 110.0 88.6 high 124%
West Kimberley (district 03)
Bidyadanga 35.2 +1.3 44.7 4 Nov 21.6 +0.8 13.0 16 Sep 20.8 9.8 v high 212%
Broome Airport 33.3 +0.5 42.8 3 Nov 23.2 +1.2 15.9 16 Sep 46.6 12.2 v high 382%
Curtin Aero 38.9 +0.5 43.4 11 Nov 21.4 0.0 14.5 21 Sep 25.8 29.4 average 88%
Derby Aero 37.8 +1.0 43.7 11 Oct 22.5 -0.2 16.5 20 Sep 10.0 16.6 average 60%
Fitzroy Crossing Aero 40.4 +1.1 44.8 18 Oct 23.0 +0.7 15.2 17 Sep 33.8 48.1 average 70%
West Roebuck 35.3 -0.2 44.1 3 Nov 21.7 +1.1 13.8 16 Sep 44.0 15.9 v high 277%
De Grey (district 04)
Bedout Island 30.7 38.1 4 Nov 24.3 21.0 16 Sep



Karratha Aero 33.8 +0.7 44.8 5 Nov 20.5 +0.3 12.5 16 Sep 6.0 3.5 high 171%
Legendre Island 30.7 43.0 5 Nov 22.7 18.1 15 Sep



Mandora 36.1 +0.7 44.3 4 Nov 19.6 +0.8 9.0 18 Sep 2.8 8.7 average 32%
Marble Bar 38.3 +0.6 45.6 5 Nov 20.5 -0.1 12.5 18 Sep 18.2 18.0 average 101%
Pardoo Station 35.2 +0.1 45.0 3 Nov 19.6 +0.4 11.0 16 Sep 7.4 6.9 high 107%
Port Hedland Airport 34.9 +0.5 43.8 4 Nov 19.8 +1.4 12.0 17 Sep 1.8 4.8 average 38%
Roebourne 36.8 +1.4 46.4 5 Nov 20.0 +0.3 12.5 19 Sep 8.8 3.6 high 244%
Roebourne Aero 36.7 +0.5 45.7 5 Nov 19.0 -0.1 9.9 19 Sep 9.2 7.9 average 116%
Fortescue (district 05)
Barrow Island Airport 29.3 +0.5 35.0 2 Nov 22.1 +0.8 17.0 2 Oct 1.4 5.1 high 27%
Christmas Creek 36.0 42.4 5 Nov 19.5 10.5 17 Sep 17.0


Learmonth Airport 33.1 +1.0 40.1 16 Nov 17.0 +0.8 8.8 16 Sep 0.2 5.6 low 4%
Mardie 34.5 0.0 45.6 5 Nov 18.5 +1.2 10.2 16 Sep 2.0 3.8 high 53%
Onslow Airport 33.1 +0.8 44.1 5 Nov 19.3 +1.6 11.8 16 Sep 1.4 5.2 average 27%
Wittenoom 36.7 +1.9 43.6 5 Nov 21.2 +0.8 11.4 16 Sep 5.8 16.3 average 36%
West Gascoyne (district 06)
Carnarvon Airport 27.1 +1.1 41.9 9 Nov 17.5 +1.2 10.5 19 Sep 9.8 15.0 average 65%
Emu Creek Station 35.2 +1.3 43.5 9 Nov 17.4 +0.7 8.9 16 Sep 19.7 8.1 high 243%
Murchison 32.0 +1.8 42.0 3 Nov 7.0 18 Sep 17.6 18.6 average 95%
Shark Bay Airport 28.5 +0.4 42.9 10 Nov 15.8 +0.7 8.7 21 Sep 10.4 14.5 average 72%
East Gascoyne (district 07)
Newman Aero 35.4 +1.2 42.9 5 Nov 18.1 +1.3 7.0 16 Sep 11.0 22.6 average 49%
Paraburdoo Aero 36.0 +0.9 42.3 6 Nov 18.8 +1.2 8.9 20 Sep 2.2 15.7 low 14%
Murchison (district 07A)
Meekatharra Airport 31.8 +2.3 41.3 2 Nov 16.4 +1.3 4.9 18 Sep 14.2 22.6 average 63%
Mount Magnet Aero 30.5 +1.9 41.3 1 Nov 15.3 +1.2 5.6 16 Sep 22.4 26.7 average 84%
Paynes Find 29.1 +1.5 40.3 13 Nov 13.3 +1.8 4.3 16 Sep 40.9 36.5 average 112%
North Coast (district 08)
Carnamah 27.9 +1.9 41.7 30 Oct 12.3 +1.7 5.2 16 Sep 62.5 55.6 average 112%
Dalwallinu 26.8 +1.1 40.1 30 Oct 11.1 +1.4 2.8 7 Oct 65.6 51.8 high 127%
Geraldton Airport 25.9 40.7 3 Nov 12.8 5.3 5 Sep 60.4


Kalbarri 26.9 +0.8 39.7 10 Nov 13.7 +1.0 7.0 16 Sep 33.4 45.3 average 74%
Mullewa 28.9 +1.7 41.2 3 Nov 13.5 +2.2 5.9 18 Sep 40.7 43.6 average 93%
Wongan Hills 26.2 +1.3 39.5 30 Oct 11.6 +1.4 3.8 5 Sep 94.6 62.0 high 153%
Central Coast (district 09)
Badgingarra Research Stn 25.1 +0.7 38.8 30 Oct 10.7 +1.0 4.4 16 Sep



Bickley 21.8 +0.7 35.1 30 Oct 10.9 +1.1 4.5 21 Oct 365.6 235.8 v high 155%
Champion Lakes 23.5 36.2 30 Oct 13.5 6.2 1 Oct 212.4


Garden Island HSF 22.1 +1.0 36.0 10 Nov 14.9 +1.3 8.7 1 Oct 189.4 122.6 v high 154%
Gingin Aero 25.0 +0.9 38.6 30 Oct 11.2 +1.8 3.3 1 Oct 186.6 145.8 high 128%
Gosnells City 25.2 +1.1 38.2 30 Oct 5.5 1 Oct 198.2 158.0 high 125%
Jandakot Aero 24.0 +1.1 37.0 10 Nov 12.1 +2.1 3.1 1 Oct 223.0 166.6 high 134%
Jurien Bay 24.6 +1.2 39.0 3 Nov 5.0 5 Sep 125.5 91.0 high 138%
Karnet 21.7 +0.8 35.2 16 Nov 10.5 +1.3 2.4 1 Oct 372.2 261.6 v high 142%
Lancelin 24.1 +1.5 37.6 10 Nov 7.0 5 Sep



Pearce RAAF 25.2 +1.7 38.8 16 Nov 12.2 +1.8 4.7 1 Oct 192.7 129.9 v high 148%
Perth Airport 24.6 +1.7 37.2 16 Nov 12.4 +1.8 4.0 1 Oct 210.8 144.4 v high 146%
Perth Metro 24.4 +1.1 37.2 10 Nov 13.2 +1.5 5.3 6 Sep 192.4 155.3 high 124%
Rottnest Island 22.0 +1.3 35.7 10 Nov 15.2 +1.0 10.3 21 Oct 144.6 113.5 high 127%
Swanbourne 23.9 +1.5 37.2 10 Nov 13.9 +1.3 7.4 1 Oct 204.6 152.7 high 134%
South Coast (district 09A)
Albany 19.4 +0.7 30.3 29 Nov 12.4 +1.7 7.0 17 Sep 274.0 226.1 high 121%
Albany Airport 20.2 30.5 29 Nov 10.3 2.8 14 Oct 251.2


Bridgetown 20.9 +0.3 33.8 16 Nov 9.4 +2.1 0.4 13 Oct



Bunbury 22.1 +0.9 34.3 10 Nov 12.1 +2.2 3.6 21 Oct 238.8 143.8 v high 166%
Busselton Aero 22.3 +0.9 33.6 16 Nov 10.9 +2.0 2.6 13 Oct



Cape Leeuwin 19.3 +0.8 30.0 10 Nov 13.9 +1.1 9.5 17 Sep



Cape Naturaliste 21.1 +1.9 32.7 16 Nov 12.4 +1.1 6.4 21 Oct



Collie East 22.1 +0.5 34.5 16 Nov 9.3 +1.8 1.2 13 Oct 261.0 174.5 v high 150%
Donnybrook 23.0 +1.4 35.6 16 Nov 11.4 +2.8 3.6 21 Oct 323.3 200.8 v high 161%
Dwellingup 21.9 +1.6 35.2 16 Nov 10.2 +1.9 2.5 1 Oct 315.0 259.0 high 122%
Esperance 22.1 +0.9 37.1 17 Nov 11.6 +0.6 6.2 1 Oct 158.0 142.6 average 111%
Esperance Aero 22.6 +1.2 35.8 17 Nov 10.3 +0.3 4.0 1 Oct 164.6 140.1 high 117%
Harvey 22.7 +1.0 35.5 16 Nov

268.1 207.4 high 129%
Hopetoun North 22.3 +0.6 38.0 17 Nov 11.4 +1.1 4.6 14 Oct 169.0 129.9 high 130%
Jarrahwood 21.9 +1.1 34.0 16 Nov 9.6 +1.9 -0.2 13 Oct 357.8 210.0 highest 170%
Mandurah 22.5 +0.8 34.2 10 Nov 14.8 +1.3 8.7 1 Oct 203.8 133.9 v high 152%
Manjimup 20.6 +1.5 33.7 16 Nov 9.8 +1.3 3.5 13 Oct



North Walpole 19.6 31.2 28 Nov 11.2 4.9 13 Oct



Pemberton 20.3 +1.4 32.8 16 Nov 10.4 +1.5 3.2 13 Oct 364.5 282.5 high 129%
Rocky Gully 20.5 +1.0 33.6 16 Nov 9.3 +1.1 2.3 13 Oct 278.2 195.2 high 143%
Windy Harbour 19.9 +0.9 31.9 10 Nov 11.3 +0.8 4.7 13 Oct 392.8 229.1 v high 171%
Witchcliffe 21.1 +1.3 34.4 16 Nov 10.6 +1.1 3.0 13 Oct



North Central (district 10)
Bencubbin 26.3 +1.3 38.5 17 Nov 12.0 +2.0 4.3 1 Oct 60.2 51.4 average 117%
Cunderdin Airfield 26.2 +0.8 40.1 30 Oct 10.1 +1.8 0.8 6 Sep 97.2 60.6 high 160%
Merredin 26.3 +1.7 39.3 30 Oct 11.0 +1.2 2.3 5 Sep 64.8 58.8 average 110%
Northam 25.6 +1.3 40.0 30 Oct 10.9 +1.5 2.9 1 Oct 100.2 74.4 high 135%
York 25.6 +1.0 40.0 30 Oct 8.8 +1.1 1.0 6 Sep 104.8 79.4 high 132%
South Central (district 10A)
Beverley 25.8 +1.4 39.4 30 Oct 10.2 +1.8 2.6 6 Sep 104.0 75.2 high 138%
Brookton 24.3 +1.0 37.9 30 Oct 9.2 +1.3 1.4 1 Oct 122.2 78.8 v high 155%
Corrigin 24.5 +1.4 38.7 30 Oct 9.9 +1.5 1.5 5 Sep 83.1 67.6 high 123%
Hyden 25.3 +0.8 38.2 4 Nov 9.9 +1.4 1.5 5 Sep 95.5 68.8 high 139%
Jacup 22.4 +0.8 37.7 4 Nov 8.8 +0.9 1.1 13 Oct 11.8 116.8 v low 10%
Katanning 22.0 +0.3 35.6 30 Oct 9.0 +1.3 1.6 13 Oct 157.0 114.3 high 137%
Lake Grace 23.7 +0.7 36.5 30 Oct 10.1 +1.1 2.7 13 Oct 77.2 79.0 average 98%
Narembeen 25.4 +0.8 38.3 30 Oct 10.6 +1.5 1.6 5 Sep 103.9 61.8 high 168%
Narrogin 22.9 +1.5 36.5 30 Oct 9.4 +1.6 1.9 6 Sep 142.1 96.6 high 147%
Newdegate Research Station 23.8 +0.8 37.0 4 Nov 7.8 +0.5 -2.0 13 Oct 61.0 78.4 average 78%
Ongerup 21.9 +0.8 35.7 4 Nov 9.3 +0.9 1.5 6 Sep 109.4 97.4 average 112%
Pingelly 23.6 +1.3 37.0 30 Oct 9.8 +1.1 3.2 1 Oct 135.7 81.4 v high 167%
Ravensthorpe 22.8 +0.5 36.3 4 Nov 10.0 +0.8 2.5 13 Oct 184.1 109.2 v high 169%
Wagin 23.1 +1.2 37.0 30 Oct 9.9 +1.7 2.0 13 Oct 102.6 88.6 high 116%
Wandering 23.0 +0.5 36.8 16 Nov 8.3 +1.6 0.7 13 Oct 178.0 109.5 v high 163%
Eucla (district 11)
Balladonia 26.0 +1.0 40.0 5 Nov 9.7 +0.7 0.5 5 Sep 88.8 66.2 high 134%
Eucla 25.1 +2.2 42.9 8 Oct 12.6 +1.3 4.0 26 Sep 81.4 58.6 high 139%
Eyre 25.0 +2.2 42.4 8 Oct 9.5 -0.4 -5.0 14 Oct 66.6 63.8 average 104%
Forrest 28.5 +1.4 44.0 30 Nov 11.4 +0.9 3.9 26 Sep 45.2 48.1 average 94%
South East (district 12)
Bulga Downs 30.8 +1.6 41.8 1 Nov 14.1 +0.9 2.5 18 Sep 18.6 26.9 average 69%
Kalgoorlie-Boulder Airport 26.9 +1.2 39.3 5 Nov 12.0 +0.9 2.3 5 Sep 64.4 47.6 high 135%
Laverton Aero 30.0 +2.2 41.0 1 Nov 14.8 +1.0 4.0 18 Sep 32.6 41.9 average 78%
Leinster Aero 30.6 +1.5 40.1 1 Nov 15.4 +0.9 4.7 18 Sep 16.2 34.1 low 48%
Leonora 30.3 +1.6 41.6 1 Nov 14.8 +1.2 4.4 18 Sep 34.2 31.1 average 110%
Leonora Aero 30.1 41.0 1 Nov 14.9 3.9 18 Sep 27.2


Munglinup West 23.3 +0.3 36.7 4 Nov 9.9 +0.6 3.3 1 Oct 141.6 112.1 high 126%
Norseman Aero 25.7 +0.2 39.6 31 Oct 9.8 +0.6 -0.9 5 Sep 133.4 70.3 high 190%
Salmon Gums Res.Stn. 24.8 +1.4 38.9 31 Oct 8.7 +0.9 -1.5 6 Sep 126.4 85.8 v high 147%
Southern Cross Airfield 26.5 +0.7 40.3 31 Oct 11.5 +2.5 1.9 1 Oct 68.0 54.0 high 126%
Yeelirrie 31.9 +2.4 40.6 2 Nov 13.9 +1.7 4.8 20 Sep 35.3 24.3 high 145%
North East (district 13)
Carnegie 34.1 +1.9 43.0 5 Nov

8.6 22.4 average 38%
Giles Meteorological Office 33.5 +2.4 41.0 7 Nov 17.9 +1.2 8.8 16 Sep 54.8 54.3 average 101%
Telfer Aero 37.4 +1.0 44.4 4 Nov 21.5 +1.3 13.3 16 Sep 1.0 21.4 low 5%
Warburton Airfield 34.3 +3.0 42.3 5 Nov 16.8 +1.7 4.0 19 Sep 45.8 45.7 average 100%
Wiluna 32.0 +1.9 42.7 6 Nov 15.2 +1.3 5.1 18 Sep 61.5 23.3 v high 264%
Offshore Islands (district 200)
Adele Island 30.1 32.8 28 Oct 26.0 23.0 24 Nov



Browse Island 29.8 32.8 14 Nov 26.8 22.1 31 Oct



Christmas Island Aero 27.5 +0.7 28.7 4 Nov 22.8 +0.2 19.0 29 Sep 301.6 258.3 average 117%
Cocos Island Airport 29.0 +0.4 30.7 26 Nov 24.9 +0.7 22.0 13 Oct 108.4 278.5 low 39%
Varanus Island 28.7 0.0 33.5 9 Nov 22.7 +0.5 17.8 15 Sep 3.0 2.5 high 120%

Notes

A Seasonal Climate Summary is prepared to list 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, usually published in the fourth week of the month.

This statement has been prepared based on information available at 4 pm on Sunday 1 December 2013. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages 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.

The ACORN-SAT dataset is being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.

Further information

Media
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