Tuesday, 4 September 2007 - Seasonal Climate Summary for Western Australia - Product code IDCKGC21R0

Western Australia in winter 2007
A dry and warm winter.

Winter 2007 was a dry winter for Western Australia as a whole. More than half of the state received below to very much below average winter rainfall contrasting with above to very much above average winter rainfall in the north and east Kimberley, with some sites recording their highest ever winter rainfall.

It was the 7th warmest winter on record in terms of the state averaged winter mean maximum temperature. More than half of the state recorded 1−3°C warm anomalies whilst areas in the north and east of Kimberley saw 1−3°C below the long-term (1961−1990) average. Mean minimum temperatures averaged across the state were close to normal, with below average temperature in the south and west, and above average temperatures in the south and west.

Some extremes and records for individual locations in WA are tabulated below.


Extremes

Hottest day
Highest temperature
38.4°C at West Roebuck on 31 Aug
Warmest days on average
Highest mean daily maximum temperature
31.1°C at Curtin Aero
31.1°C at West Roebuck
Coolest days on average
Lowest mean daily maximum temperature
15.7°C at Rocky Gully
Coldest day
Lowest daily maximum temperature
11.0°C at Balgo Hills on 20 Jun
11.0°C at Shannon on 6 Aug
11.0°C at Dwellingup on 10 Aug
11.0°C at Katanning on 10 Aug
Coldest night
Lowest temperature
−5.1°C at Eyre on 7 & 16 Jul
Coolest nights on average
Lowest mean daily minimum temperature
4.2°C at Warburton Airfield
Warmest nights on average
Highest mean daily minimum temperature
22.0°C at Troughton Island
Warmest night
Highest daily minimum temperature
27.1°C at Troughton Island on 2 Jun
Wettest overall
Highest total rainfall
670.7 mm at Karnet
656.4 mm at Bickley
642.0 mm at Jarrahdale
Wettest day
Highest daily rainfall
106.0 mm at Paynedale on 28 Jun
Highest wind gust
122 km/h at Cape Leeuwin on 26 Aug

Records

Record highest total winter rainfall
Total rainfall
for winter 2007 (mm)
Previous highest
for winter
Years of
record
Normal for
winter
Kimberley Res.Station99.486.7in 1957638.6
Wyndham98.283.9in 1968407.9
Kununurra Aero98.834.0in 1986316.1



Record lowest winter mean daily maximum temperature
Mean daily maximum
temperature
for winter 2007 (°C)
Previous lowest
for winter
Years of
record
Normal for
winter
Warmun28.328.8in 19774330.4
Wyndham29.930.3in 20063832.0



Record highest winter temperature
Highest temperature
in winter 2007 (°C)
Previous highest
for winter
Years of
record
Normal for
winter
Wittenoom34.5on 29 Aug34.4on 26 Aug 19775525.1
Bidyadanga38.0on 31 Aug37.8on 31 Aug 19965030.0



Record lowest winter daily maximum temperature
Lowest daily maximum
temperature
in winter 2007 (°C)
Previous lowest
for winter
Years of
record
Normal for
winter
Warmun15.3on 20 Jun16.8on 14 Jun 19934630.4
Wyndham17.7on 20 Jun17.9on 12 Jul 19684032.0
Kuri Bay20.8on 20 Jun22.3on 13 Jul 19683931.4



Record highest winter mean daily minimum temperature
Mean daily minimum
temperature
for winter 2007 (°C)
Previous highest
for winter
Years of
record
Normal for
winter
Kalgoorlie-Boulder Airport7.47.0in 1949665.5
Badgingarra Research Stn8.88.6in 1983367.4
Narembeen7.17.0in 1992335.6



Record lowest winter mean daily minimum temperature
Mean daily minimum
temperature
for winter 2007 (°C)
Previous lowest
for winter
Years of
record
Normal for
winter
Telfer Aero9.910.3in 20063011.6



Record highest winter daily minimum temperature
Highest daily minimum
temperature
in winter 2007 (°C)
Previous highest
for winter
Years of
record
Normal for
winter
Geraldton Airport19.2on 7 Jun19.1on 17 Jun 1988669.7



Notes

This statement has been prepared based on information available at 10 am on Monday 3 September 2007. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Normals 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 30 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of "normal" rain.

Further information

Western Australia Climate Services Centre
Bureau of Meteorology
Phone (08) 9263 2222
Email climate.wa@bom.gov.au