Climate in Perth

Perth, Australia has a mediterranean climate. The annual average temperature is about 20.7°C and the city receives roughly 549 mm of precipitation across 61 rainy days a year, with around 2792 hours of sunshine. The warmest month is Jan (highs near 30.7°C) and the coldest is Jul (lows near 10.6°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

Data year 2025; last updated 2026-05-16.

Perth is classified as Mediterranean. This reflects its annual temperature range and the seasonal pattern of its rainfall.

Perth receives about 549 mm of precipitation a year over roughly 61 rainy days. The wettest month is Jun and the driest is Jan.

Perth sees an estimated 2792 hours of sunshine a year, concentrated in the warmer months around Jan.

By temperature and rainfall, the most comfortable months in Perth are Jan, Sep, Feb. Conditions vary year to year — verify with a current forecast before booking.

Perth has a climate comfort score of 94/100, a very comfortable year-round climate by this measure. The score weights mild temperatures most, then rainfall balance, sunshine, low seasonality, and the absence of extreme winter cold or summer heat.

• Climate in Sydney — Oceanic, comfort 82/100
• Climate in Melbourne — Oceanic, comfort 82/100
• Climate in Brisbane — Semi-Arid, comfort 76/100