- Clothing
- Waterproof jacket and umbrella strongly recommended.
Tomorrow's Weather Forecast - Perth
Tomorrow's weather in Perth. high 19°C (66°F), low 14°C (57°F). Drizzle.
Tomorrow’s Outlook
Tomorrow will be 5°C cooler than today. Expect heavy rain in the morning and night, with rain chances climbing as high as 98%. That risk lines up with humidity averaging 71% through the day the more moisture in the air, the more readily clouds build into showers. Humidity holds around 71%, giving the air a damp, heavy feel even without much heat behind it. Winds will turn gusty at times, reaching up to 51 km/h. Sunrise is at 6:19 AM and sunset at 6:06 PM, for about 11h 47m of daylight.
- Tomorrow
- 19°/ 14°
- Today24° / 13°
Tomorrow’s Hourly Weather Outlook
Morning6 AM – Noon18°
- Rain probability
- 93%
- Wind speed
- 22 km/h
AfternoonNoon – 6 PM18°
- Rain probability
- 0%
- Wind speed
- 13 km/h
Evening6 PM – Midn15°
- Rain probability
- 0%
- Wind speed
- 8 km/h
NightMidn – 6 AM18°
- Rain probability
- 98%
- Wind speed
- 24 km/h
24-Hour Rain & Temperature Forecast
Tomorrow12 Sep
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Planning Advice for Tomorrow
- Outdoor
- Not ideal for outdoor plans or car washes — heavy rain expected.
- Travel
- Expect traffic slowdowns from wet roads. Allow extra time.
Sunrise & Sunset
Sunrise
Dawn 5:49 AMTotal Daylight
Full day forecastSolar noon 12:13 PM
Sunset
Dusk 6:36 PMvs today+2 min daylight
Sunrise shift2 min earlier
Sunset shiftSame time
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
Perth is forecast to reach a high of 19°C tomorrow, 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 — 13 of the last 20 days with published data have run warmer than normal. Expect a high chance of rain (98% probability) and moderate breezes averaging 24 km/h. Air quality is currently good (AQI 16), with no notable outdoor health concerns.
Today vs Normal
24°C+6° above normal
The long-term average high for today is 18°C.
13 of the last 20 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
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.