Western Australia in spring 2009: Warmer than normal Spring for WA

  • Very much above average mean maximum temperature for WA
  • Above average mean minimum temperature for WA
  • Near average rainfall for WA

Rainfall

This spring, parts of the northwest and central WA saw above to very much above average rainfall, mainly the result of a wet November. The far eastern parts of WA experienced below to very much below average spring rainfall, due to a dry October and November (see spring 2009 rainfall decile map). For Western Australia as a whole, spring 2009 was near average.

Some sites had their highest total spring rainfall on record. Some sites had their highest spring daily rainfall on record.

Maximum temperature

Apart from near average daytime temperatures along the western strip, most of WA saw above to very much above average mean maximum temperatures, with means up to 3°C above normal in parts of eastern WA. This was mainly the result of warmer than normal maxima in the Kimberley and most of the Interior in September, and above to very much above average maxima for most of WA in October. The statewide mean maximum temperature for spring was very much above average.

Some sites had their highest spring temperature on record.

Minimum temperature

Mean minimum temperatures were above to very much above average in spring over much of the northern half of WA, as well as the adjacent Goldfields, Eucla and south of the Southwest Land Division, with means up to 2°C higher than normal in parts of northwest, and southeast WA. Overall, the statewide mean minimum temperature for spring was in the above average range.

Some sites had their warmest spring night (highest daily minimum temperature) on record.

Further information

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Extremes in spring 2009
Hottest day 45.6 °C at Mandora on 29 Oct
Warmest days on average 40.0 °C at Fitzroy Crossing Aero
Coolest days on average 18.4 °C at Shannon
Coldest day 9.8 °C at Rocky Gully on 5 Sep
Coldest night -4.3 °C at Eyre on 9 Sep
Coolest nights on average 7.4 °C at Wandering
Warmest nights on average 27.0 °C at Troughton Island
25.0 °C at Wyndham (mainland)
Warmest night 31.4 °C at Wittenoom on 30 Oct
Wettest overall 394.1 mm at Pemberton
Wettest day 104.0 mm at Kilto Station on 6 Nov
Highest wind gust 120 km/h at Esperance on 6 Nov

Record highest spring daily rainfall
Highest daily rainfall
in spring 2009 (mm)
Previous highest
for spring
Years of
record
Broome Airport 44.6 on 6 Nov 36.8 on 10 Nov 1943 71




Record highest spring temperature
Highest temperature
in spring 2009 (°C)
Previous highest
for spring
Years of
record
Average for
spring
Giles Meteorological Office 43.9 on 17 Nov 43.8 on 30 Nov 1996 54 31.1
Eucla 44.5 on 13 Nov 44.0 on 23 Nov 1982 50 22.9



Record highest spring daily minimum temperature
Highest daily minimum
temperature
in spring 2009 (°C)
Previous highest
for spring
Years of
record
Average for
spring
Kalgoorlie-Boulder Airport 25.7 on 28 Oct 25.6 on 23 Nov 1980 69 11.0
Corrigin 24.7 on 12 Nov 23.7 on 23 Nov 1977 62 8.4
Hyden 24.8 on 12 Nov 23.0 on 23 Nov 1977 38 8.4



Notes

This statement has been prepared based on information available at 12 pm on Tuesday 1 December 2009. 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 30 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average rain.

Further information

Media
(03) 9669 4057
Enquiries