Wednesday, 2 July 2009 - Monthly Climate Summary for Western Australia - Product code IDCKGC21R0

Western Australia in June 2009
An average June in WA

Summary

  • 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.

Details

Rainfall

A number of strong cold fronts during June 2009 brought widespread rainfall to large parts of WA including the Pilbara, Gascoyne, Goldfields, Eucla and the Southwest Land Division (SWLD). Despite this, June rainfall was still near average over large parts of WA while areas of above to very much above average rainfall in the SWLD, southern Goldfields, Eucla, eastern Pilbara and eastern Interior contrasted with pockets of below average rainfall in the Gascoyne, western Pilbara and western Interior (see June rainfall decile map). Rainfall totals were significant in the Southwest Land Division (SWLD) where several sites, mainly in the southern Southwest, South Coastal and southern Great Southern, experienced their wettest June for 30 years. Rainfall was low in the northeast of the state which is typical for this time of year. Averaged across WA as a whole rainfall in June 2009 was near average.

Maximum temperature

June 2009 mean maximum temperature was above to very much above average in the Kimberley, with most of the district up to 2°C warmer than the long term mean. Halls Creek in the Kimberley broke it's highest daily maximum temperature for June when it recorded 34.2°C on the 30th, breaking the previous record of 33.8°C set on 12 June 1973. Monthly mean maximum temperature over the remainder of the state was near average apart from pockets of above average mean maximum temperature in the Interior and Gascoyne, with temperatures up to 2°C warmer than normal (see June maximum temperature anomaly map). Averaged across the state the monthly mean maximum temperature was near average.

Minimum temperature

Monthly mean minimum temperature was above average in the west Kimberley and adjacent parts of the Pilbara and Interior, with an area of up to 3 ºC above average. Minimum temperatures were also above average in small patches of the Eucla and far west Gascoyne. Mean minima were below average in the small areas of the Gascoyne and far northeast Kimberley with temperatures up to 3 ºC below the long term mean. The remainder of the state was near average (see June minimum temperature anomaly map). Averaged across the state as a whole, the WA mean minimum temperature was near average .

Further information

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


Extremes

Hottest day
Highest temperature
36.0°C at Warmun on the 30th
Warmest days on average
Highest mean daily maximum temperature
33.4°C at Kalumburu
Coolest days on average
Lowest mean daily maximum temperature
14.4°C at Rocky Gully
Coldest day
Lowest daily maximum temperature
8.8°C at Shannon on the 29th
Coldest night
Lowest temperature
−2.8°C at Southern Cross Airfield on the 22nd
Coolest nights on average
Lowest mean daily minimum temperature
4.7°C at Yeelirrie
Warmest nights on average
Highest mean daily minimum temperature
24.2°C at Troughton Island
21.2°C at Kuri Bay (mainland)
Warmest night
Highest daily minimum temperature
26.0°C at Troughton Island on the 1st
23.8°C at Kuri Bay (mainland) on the 2nd
Wettest overall
Highest total rainfall
424.5 mm at Northcliffe
Wettest day
Highest daily rainfall
78.2 mm at Woodridge Estate on the 19th
Highest wind gust
124 km/h at Cape Naturaliste on the 29th

Records

Record highest June daily rainfall
Highest daily rainfall
in June 2009 (mm)
Previous highest
for June
Years of
record
Newman Aero 36.0 on the 25th 27.4 on the 13th in 1989 34



Highest June rainfall total for at least 30 years
Total rainfall
for June 2009 (mm)
Most recent higher
for June
Years since
higher
Average for
June
Northcliffe 424.5 437.6 in 1957 52 220.1
Pemberton 278.6 357.2 in 1970 39 194.7
Barrett Meadows 227.5 233.4 in 1978 31 141.6
Albany 221.2 223.4 in 1978 31 133.2
Mount Barker 152.2 161.0 in 1978 30 95.7
Kendenup 134.2 163.5 in 1957 52 79.9
Cherry Tree 148.0 149.1 in 1964 45 80.0
Gnowangerup 128.0 178.1 in 1945 64 57.1
Clontarf Farm 96.8 159.9 in 1968 40 53.6



Record highest June daily maximum temperature
Highest temperature
in June 2009 (°C)
Previous highest
for June
Years of
record
Average for
June
Halls Creek Airport 34.2 on the 30th 33.8 on the 12th in 1973 62 27.2



Notes

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

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