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New South Wales weather in September 2025
Expect 20°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in New South Wales in September. Check more long-term weather averages for New South Wales in September before you book your next holiday to New South Wales in 2025/2026.
- 2020°C max day temperature
- 7 hours of sunshine per day
- 1010 days with some rainfall
- 1111°C min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 6262 mm of monthly rainfall
- 55 (Moderate) UV index
- 1818°C sea temperature
More about New South Wales
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New South Wales by month
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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.
Top New South Wales destinations
Below are average maximum temperatures at popular countries, regions and places in New South Wales in September. Select a holiday destination to see more weather parameters.
All New South Wales destinations
- Albury
- Batemans Bay
- Bourke
- Broken Hill
- Byron Bay
- Cobar
- Coffs Harbour
- Cooma
- Dubbo
- Hay
- Katoomba
- Lord Howe Island
- Moree
- Sydney
- Tamworth
- Tibooburra
- Wagga Wagga
Metric (°C / mm) | Imperial (°F / inches)
More about Australia
How hot is it in New South Wales in September?
Daytime temperatures usually reach 20°C in Sydney, New South Wales in September, falling to 11°C at night.
How sunny is it in New South Wales in September?
There are normally 7 hours of bright sunshine each day in Sydney, New South Wales in September - that's 62% of daylight hours.
How warm is the sea around New South Wales in September?
The average sea temperature around Sydney, New South Wales in September is 18°C.
Does it rain in New South Wales in September?
There are usually 10 days with some rain in Sydney, New South Wales in September and the average monthly rainfall is 62mm.
New South Wales September sunrise & sunset times
Browse the sunrise and sunset times for New South Wales in September 2025. Select a month to view New South Wales sunrise and sunset times for the next 12 months. The New South Wales sunrise and sunset times shown below are for Sydney.
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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