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Western Australia weather in September 2025
Expect 20°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Western Australia in September. There is usually 10 days with some rainfall and 71 mm of average monthly rainfall in September.
- 20°C max day temperature
20
- 8 hours of sunshine per day
- 10 days with some rainfall
10
- 10°C min night temperature
10
- 12 hours of daylight per day
12
- No heat & humidity
0
- 71 mm of monthly rainfall
71
- 6 (High) UV index
6
- 18°C sea temperature
18
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Recommended for Western Australia
The September weather guide for Western Australia (Perth) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Top Western Australia destinations
Below are average maximum temperatures at popular countries, regions and places in Western Australia in September. Select a holiday destination to see more weather parameters.
All Western Australia destinations
- Albany
- Broome
- Esperance
- Eucla
- Exmouth
- Geraldton
- Giles
- Halls Creek
- Kalgoorlie
- Kununurra
- Margaret River
- Monkey Mia
- Paraburdoo
- Perth
- Port Hedland
Metric (°C / mm) | Imperial (°F / inches)
More about Australia
How hot is it in Western Australia in September?
Daytime temperatures usually reach 20°C in Perth, Western Australia in September, falling to 10°C at night.
How sunny is it in Western Australia in September?
There are normally 8 hours of bright sunshine each day in Perth, Western Australia in September - that's 64% of daylight hours.
How warm is the sea around Western Australia in September?
The average sea temperature around Perth, Western Australia in September is 18°C.
Does it rain in Western Australia in September?
There are usually 10 days with some rain in Perth, Western Australia in September and the average monthly rainfall is 71mm.
Western Australia September sunrise & sunset times
Browse the sunrise and sunset times for Western Australia in September 2025. Select a month to view Western Australia sunrise and sunset times for the next 12 months. The Western Australia sunrise and sunset times shown below are for Perth.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 06:34 | 18:00 |
Monday, 15th September 2025 | 06:16 | 18:08 |
Tuesday, 30th September 2025 | 05:56 | 18:18 |
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