Weekend Weather Forecast - Perth

Weekend weather in Perth. Saturday high 19°C (66°F). Sunday high 19°C (66°F).

Weekend Hourly Forecast

Fri·11 Sep
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Temperature · peaks at +24°C

48-Hour Weekend Forecast Chart

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Fri11 Sep
Sat12 Sep
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Temperature · peaks at +20°C

Weekend Activity Outlook

Travel / Drive
Rating
Poor
Reason
Heavy rain — road conditions poor
Outdoor Sports
Rating
Poor
Reason
Wet field — matches likely cancelled
Home / Laundry
Rating
Poor
Reason
Rain will prevent outdoor drying
Outdoor Events
Rating
Poor
Reason
Venue should have indoor backup ready

5-Day Weather Forecast

Full 15-Day Forecast

Weather Insight

Perth is forecast to reach a high of 19°C this weekend, with an overnight low around 14°C. That's 1° above the long-term average high of 18°C for this time of year. It continues a recent pattern — 18 of the last 28 days with published data have run warmer than normal. Expect a high chance of rain (100% probability) and moderate breezes averaging 24 km/h. Air quality is currently good (AQI 26), with no notable outdoor health concerns.

Today vs Normal

24°C+6° above normal

The long-term average high for today is 18°C.

18 of the last 28 days with published data ran above normal.

It continues that pattern - today's forecast is also running above normal.

2026-08-28: 19°C19°2026-08-29: 20°C20°2026-08-30: 22°C22°2026-08-31: 19°C19°2026-09-01: 16°C16°2026-09-02: 17°C17°2026-09-03: 18°C18°2026-09-04: 17°C17°2026-09-05: 18°C18°2026-09-06: 18°C18°2026-09-07: 20°C20°2026-09-08: 20°C20°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.