Wednesday, 2 July 2009 - Monthly Climate Summary for Western Australia - Product code IDCKGC21R0
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.
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.
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 .
Yanhui Blockley or Patrick Ward
Western Australia Climate Services Centre
Bureau of Meteorology
Phone (08) 9263 2222
|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|
Lowest daily maximum temperature
|8.8°C at Shannon on the 29th|
|−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)
Highest daily minimum temperature
| 26.0°C at Troughton Island on the 1st
23.8°C at Kuri Bay (mainland) on the 2nd
Highest total rainfall
|424.5 mm at Northcliffe|
Highest daily rainfall
|78.2 mm at Woodridge Estate on the 19th|
|Highest wind gust
||124 km/h at Cape Naturaliste on the 29th|
|Record highest June daily rainfall|
Highest daily rainfall
in June 2009 (mm)
|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
|Barrett Meadows||227.5||233.4||in 1978||31||141.6|
|Mount Barker||152.2||161.0||in 1978||30||95.7|
|Cherry Tree||148.0||149.1||in 1964||45||80.0|
|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
|Halls Creek Airport||34.2||on the 30th||33.8||on the 12th in 1973||62||27.2|
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.