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Chatham Island weather in September 2025
Expect 11°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Chatham Island in September. Check more long-term weather averages for Chatham Island in September before you book your next holiday to New Zealand in 2025/2026.
- 1111°C max day temperature
- 4 hours of sunshine per day
- 33 days with some rainfall
- 66°C min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 7272 mm of monthly rainfall
- 33 (Moderate) UV index
- 1111°C sea temperature
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Recommended for New Zealand
The September weather guide for New Zealand (Chatham Island) 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 / mm) | Imperial (°F / inches)
How warm is it in Chatham Island in September?
Daytime temperatures usually reach 11°C in Chatham Island in September, falling to 6°C at night.
How sunny is it in Chatham Island in September?
There are normally 4 hours of bright sunshine each day in Chatham Island in September - that's 30% of daylight hours.
Is the sea cold around Chatham Island in September?
The average sea temperature around Chatham Island in September is 11°C.
Does it ever rain in Chatham Island in September?
There are usually 3 days with some rain in Chatham Island in September and the average monthly rainfall is 72mm.
Chatham Island September sunrise & sunset times
Browse the sunrise and sunset times for Chatham Island in September 2025. Select a month to view Chatham Island sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 06:59 | 18:04 |
Monday, 15th September 2025 | 06:34 | 18:20 |
Tuesday, 30th September 2025 | 06:06 | 18:37 |
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