Perth Travel Guide - Weather
During spring, September and October, the weather is warm and sunny and there is little rain. Temperatures are about 11°C in September and October and slightly warmer in November. Summers last for three months from December to the end of February. During this time, the weather can get quite hot with the hottest months being January and February.
The Fremantle Doctor, a sea breeze, helps soothe rising temperatures in the afternoon. Average day temperatures are about 30°C and at night the average temperature is 20°C.
Although the days are cooler the sun still shines. There may be the occasional heavy downpour but usually these are milder showers. Daytime temperatures are about 20°C and night time temperatures are about 10°C.