Winds keep summer cool

Collie's received almost double its average summer rainfall between December and February, recording 55mm in just one day alone.
Collie's received almost double its average summer rainfall between December and February, recording 55mm in just one day alone.

Collie’s summer may have felt quite mild, however it was an improvement over last year according to the Bureau of Meteorology.

The Bureau’s Collie East weather station recorded a mean maximum daily temperature of 29.5C between throughout the three summer months.

Bureau of Meteorology senior climatologist Glenn Cook said while this was half a degree lower than average for summer, it was higher than the 2016/17 summer’s average maximum of 29.3C.

Mr Cook also said the summer’s mean minimum daily temperature of 12.5C was also half a degree lower than average, but again it was higher than the previous summer’s average of 12C.

Mr Cook said the winds were at fault for the below average temperatures throughout summer.

“Summer in south-west WA was impacted by quite mobile high pressures systems to the south,” he said.

“Thus, we recorded more cooler southerly winds than normal and had very few static highs in the Bight that build up heat over the southwest.

“[That’s why] there were very few hot days.”

The Collie East weather station recorded just six days over 35C throughout the whole summer, which was half the amount of the previous summer and the lowest amount since just five were recorded in 2005/06.

There were also no days where the recorded temperature reached 40C for the first time since 2012/13.

Collie recorded its highest daily maximum temperature of 38.3C on Sunday, January 14, however no other day during the summer even reached 37C.

The lowest maximum temperature was the 19C recorded on Sunday, December 17, the summer’s only day not to reach 20C.

Collie also received higher than average level of rainfall with the Collie East station recording 100.2mm of rain over the summer.

Collie received more than the summer average of 54.9mm in just one day alone, with 55mm of rain recorded on Tuesday, January 16.