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Sydney weather in September 2025
Expect 68°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Sydney in September. Check more long-term weather averages for Sydney in September before you book your next holiday to New South Wales in 2025/2026.
- 6868°F max day temperature
- 7 hours of sunshine per day
- 1010 days with some rainfall
- 5252°F min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 2.42.4 inches of monthly rainfall
- 55 (Moderate) UV index
- 6464°F sea temperature
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Recommended for New South Wales
The September weather guide for New South Wales (Sydney) 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.
Metric (°C) | Imperial (°F)
More about Australia
How hot is it in Sydney in September?
Daytime temperatures usually reach 68°F in Sydney in September, falling to 52°F at night.
How sunny is it in Sydney in September?
There are normally 7 hours of bright sunshine each day in Sydney in September - that's 62% of daylight hours.
How warm is the sea around Sydney in September?
The average sea temperature around Sydney in September is 64°F.
Does it rain in Sydney in September?
There are usually 10 days with some rain in Sydney in September and the average monthly rainfall is 2.4 inches.
Sydney September sunrise & sunset times
Browse the sunrise and sunset times for Sydney in September 2025. Select a month to view Sydney sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 06:14 | 17:37 |
Monday, 15th September 2025 | 05:55 | 17:47 |
Tuesday, 30th September 2025 | 05:34 | 17:57 |
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