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Coleraine weather in September 2025
Expect 61°F daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Coleraine in September. Check more long-term weather averages for Coleraine in September before you book your next holiday to Northern Ireland in 2025/2026.
- 6161°F max day temperature
- 3 hours of sunshine per day
- 2020 days with some rainfall
- 4848°F min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 3.83.8 inches of monthly rainfall
- 33 (Moderate) UV index
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Recommended for Northern Ireland
The September weather guide for Northern Ireland (Coleraine) 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 the UK
How warm is it in Coleraine in September?
Daytime temperatures usually reach 61°F in Coleraine in September, falling to 48°F at night.
How sunny is it in Coleraine in September?
There are normally 3 hours of bright sunshine each day in Coleraine in September - that's 26% of daylight hours.
Does it rain in Coleraine in September?
There are usually 20 days with some rain in Coleraine in September and the average monthly rainfall is 3.8 inches.
Coleraine September sunrise & sunset times
Browse the sunrise and sunset times for Coleraine in September 2025. Select a month to view Coleraine sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:33 | 19:19 |
Monday, 15th September 2025 | 05:59 | 18:43 |
Tuesday, 30th September 2025 | 06:28 | 18:04 |
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