Whilst we continue to see some pretty settled weather here in New Zealand, there are some very autumn like changes headed for Western Australia.

Sunday should be another dry and settled day on this side of the ditch.  Temperatures will likely top out around their seasonal averages or maybe just a bit cooler.  That means highs in the low to mid 20’s for most areas.

You might prefer it a bit warmer than that.  After all, it is summer.  But for people in Perth, WA highs in the low to mid 20’s may be seen as a welcome relief.

According to WeatherZone.com.au, after a sweltering week in the Australia’s southwest, a cold front will cross the region on Sunday bringing the coolest day in a month for places like Perth and Bunbury.

Tomorrow’s cooler weather will come as a contrast to the past week, which included Perth’s hottest five-day spell in 12 years. The coolest day between Saturday and Wednesday in the WA capital reached 37.6 degrees, making it the hottest five day run since 2001. A weak trough then brought a brief cooler change on Thursday, with the temperature rebounding to 34 degrees on Friday.

It has been a similar story for Busselton, where it was hotter than 33 degrees every day in the last week except Thursday. Tuesday was their hottest February day in three years, climbing to 37.5 degrees.

The nights have also been uncomfortably hot. In Bunbury it only cooled to 24.1 degrees on Monday and Tuesday nights, the warmest in nine years.

The hot spell has been the result of a trough remaining offshore most days, allowing inland heat to push through the region. This trough will move inland during Saturday, causing winds to tend southwesterly by early afternoon and temperatures to dive. In Perth it will reach 32 degrees ahead of this change, before dropping by about five degrees during the afternoon.

A cooler air mass will arrive early on Sunday with a stronger cold front, leading to an expected top of just 26 degrees in Perth and 25 degrees in Bunbury and Busselton. This would be the coldest day in exactly one month for these towns.

The cooler weather won’t last long though, with temperatures climbing back into the mid-to-high 30s in Perth again by Wednesday.

By WeatherWatch.co.nz