Wednesday, 1 April 2009 - Monthly Climate Summary for Western Australia - Product code IDCKGC21R0

Western Australia in March 2009
Near average rainfall and temperature in WA


  • Near average rainfall for WA.
  • Near average mean maximum temperature for WA.
  • Near average mean minimum temperature for WA.

An archive of previous monthly summaries for Western Australia is also available, as are summaries for other states and many other climate summaries and diagnostics.



Rainfall was near average across much of the state, though parts of the east Pilbara, Eucla and neighbouring regions experienced above to very much above average rainfall as a result of the passage of a tropical low early in the month. Some flooding occurred as a result of heavy rains associated with the low in the east Pilbara, east Gascoyne, adjacent northern Goldfields and Interior. Below to very much below average rainfall occurred in the north and east Kimberley, west Pilbara, and parts of the central and west Gascoyne as no other tropical low pressure systems affected WA during March (see March rainfall decile map). Averaged across WA as a whole, rainfall in March 2009 was near average.

Maximum temperature

Mean maximum temperatures were near average for a large part of WA in March, but were above average in most of the Kimberley and the northern Interior, with up to 4°C warmer than normal mean maxima in the northeast Interior. Conversely, parts of the Southwest Land Division and Eucla recorded below average mean maxima, with up to 2°C cooler than normal mean maxima in the east Eucla. Averaged across the state, the mean maximum temperature was near average. (see March maximum temperature anomaly map).

Minimum temperature

Mean minimum temperatures were below to very much below average across western and central parts of the state, with pockets of mean minimum temperatures up to 2ºC below average in the Lower West and Gascoyne, as well as in neighbouring regions. Conversely, minima were above average in parts of the west Kimberley and northern Interior, with means up to 2ºC above normal. Averaged across the state as a whole however, the WA mean minimum temperature was near average. (see March minimum temperature anomaly map).

Further information

Yanhui Blockley
Western Australia Climate Services Centre
Bureau of Meteorology
Phone (08) 9263 2222


Hottest day
Highest temperature
44.5°C at Onslow on the 28th
Warmest days on average
Highest mean daily maximum temperature
39.3°C at Balgo Hills
Coolest days on average
Lowest mean daily maximum temperature
22.0°C at Albany
Coldest day
Lowest daily maximum temperature
15.0°C at Mount Barker on the 31st
Coldest night
Lowest temperature
2.5°C at Wandering on the 3rd
Coolest nights on average
Lowest mean daily minimum temperature
10.1°C at Jarrahwood
Warmest nights on average
Highest mean daily minimum temperature

27.3°C at Troughton Island
25.6°C at Broome Airport

Warmest night
Highest daily minimum temperature
29.8°C at Wittenoom on the 16th
Wettest overall
Highest total rainfall
234.0 mm at Bonney Downs
Wettest day
Highest daily rainfall
137.0 mm at Marble Bar (DoW) on the 1st
Highest wind gust
104 km/h at Wyndham Aero on the 3rd


Record highest March temperature
Highest temperature
in March 2009 (°C)
Previous highest
for March
Years of
Average for
Troughton Island 35.4 on the 6th 35.3 on the 30th in 2003 31 31.9


This statement has been prepared based on information available at 10 am on Wednesday 1 April 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

Yanhui Blockley
Western Australia Climate Services Centre
Bureau of Meteorology
Phone (08) 9263 2222