Wednesday, 1 August 2018 - Monthly Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in July 2018: warmer daytime temperatures across Western Australia

Mean maximum temperatures were above average across Western Australia. For WA as a whole, mean maximum temperature in July 2018 was the second-highest on record, just behind last July. Mean minimum temperatures were above average in the south, but below average in the northeast. The state-wide averaged mean minimum temperature was above average. Rainfall was mostly near average in the western WA, including the South West Land Division, but the central and eastern parts of the State recorded below average rainfall while it is a seasonal dry month in the Kimberley.

Below average rainfall for much of the central and eastern WA

• Monthly rainfall was below average for WA as a whole, but wetter than last July
• Rainfall was near average for most of the Gascoyne district and the South West Land Division (SWLD) largely due to passages of cold fronts at the start of July and from the mid-to end of the month
• It was the wettest July since 2011 for the SWLD as a whole; a number of sites recorded their wettest July for at least 20 years
• It is a wet start to July for the western WA as a cloudband, two fronts and a low pressure system produced a series of rains; some sites in the Central West, Central Wheat Belt districts had their record July daily rainfall between 30 mm and 70 mm on the 3rd
• A cloudband and three cold fronts in succession brought moderate to heavy rainfall to far southwest of the State between the 21st and 23rd; Windy Harbour in the South West district recorded its wettest July day in 34 years of record with 61.4 mm on the 21st

Above average mean maximum temperature across WA

• The statewide averaged mean maximum temperature was 2.30 °C above average and the second-highest in July on record, just behind last July (2.32 °C)
• Despite the absence of very warm daytime temperatures, several sites in the State's south, inland east and northern Goldfields had their warmest July on record or warmest since 1994
• A pool of cold southwesterly air resulted in daytime temperatures in the low 10s near the State's south coast on the 5th, with Esperance Aerodrome recording the lowest maximum temperature at 10.2 °C
• The statewide averaged mean minimum temperature was 0.47  °C above average and warmer than last July
• The mean minimum temperature for the SWLD as a whole was 1.19 °C above average, which was the tenth-highest in July on record, and highest since 2007
• Cape Leeuwin had its mildest July on record while Esperance had its mildest July since 1996, in terms of minimum temperature
• Zero to sub-zero temperatures were mostly recorded between the 6th and 12th in southern WA, and notable frosty mornings were the 6th in the Goldfields district, and 10th and 11th in the South West district

Further information

Extremes Maps Records Summaries Important notes the top

Extremes Maps Records Summaries Important notes the top

Maps
	Observed	Anomaly	Decile rank
Total rainfall
Mean daily maximum temperatures
Mean daily minimum temperatures

Click on a map to show it full size in a pop-up window

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported

Extremes Maps Records Summaries Important notes the top

Extremes Maps Records Summaries Important notes the top