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In Perth, the summers are warm and dry; the winters are long, cool, and wet; and it is windy and mostly clear year round. Over the course of the year, the temperature typically varies from 48°F to 86°F and is rarely below 40°F or above 97°F.

Perth Weather. Perth boasts a Mediterranean climate which means that for most of the year the weather is fine and sunny. These near perfect weather makes it perfect for visitors all year round with cool breezes coming off from the Perth Coast. The sun is hot in Australia so it is highly advised you wear sunscreen, hats and protective clothing all year round.

Annual Weather Averages Near Perth. Averages are for Dundee / Riverside, which is 17 miles from Perth. Based on weather reports collected during 1985–2015.

The weather is good all year round in Perth On average, the warmest months are January, February, March and December Perth has dry periods in March and December The coldest months are July and August

In Perth, Western Australia, the daily average temperature ranges from 12 °C (54 °F) in July to 24 °C (75 °F) in January and February. In a typical year, 800 mm (31.5 in) of rain fall, most of which occur from May to August, with a maximum of 170 mm (6.7 in) in July, the central month of winter.

Many of the higher mountains in the territory's south-west are snow-covered for part of the winter. Thunderstorms can occur between October and March, and annual rainfall is 623 mm (25 in), with rainfall highest in spring and summer and lowest in winter.