Today will be the hottest day since April for Perth after its warmest start to spring in 19 years.
During spring the western capital hasn't tipped 30 degrees. However today is near certain to do this before the sea breeze arrives during the afternoon, halting the daytime heating.
Despite not reaching 30 degrees in September, it was quite a warm start to spring. When combining the average minimum of 9.8 degrees and maximum of 21.5 degrees for Perth during September, it has made it the warmest September in 19 years.
This September was typical for Perth in terms of rainfall with 91mm recorded, only 10mm more than the long term average.
Looking ahead, the rest of the week will be much cooler with a few showers starting late on Tuesday with the arrival of a cold front. Wednesday and Thursday will top out near 20 degrees. Friday and Saturday will be warmer again but not nearly as hot as today.
© Weatherzone 2012
17:37 EDT Much of western New South Wales has begun a heat wave, reaching at least five degrees above average for at least five days, averaging a maximum of 35 degrees or more.