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Antrim weather in September 2025
Expect 16°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Antrim in September. Check more long-term weather averages for Antrim in September before you book your next holiday to Northern Ireland in 2025/2026.
- 1616°C max day temperature
- 4 hours of sunshine per day
- 1919 days with some rainfall
- 88°C min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 9191 mm of monthly rainfall
- 33 (Moderate) UV index
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Antrim by month
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Recommended for Northern Ireland
The September weather guide for Northern Ireland (Antrim) 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)
More about the UK
How warm is it in Antrim in September?
Daytime temperatures usually reach 16°C in Antrim in September, falling to 8°C at night.
How sunny is it in Antrim in September?
There are normally 4 hours of bright sunshine each day in Antrim in September - that's 28% of daylight hours.
Does it rain in Antrim in September?
There are usually 19 days with some rain in Antrim in September and the average monthly rainfall is 91mm.
Antrim September sunrise & sunset times
Browse the sunrise and sunset times for Antrim in September 2025. Select a month to view Antrim sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:32 | 19:16 |
Monday, 15th September 2025 | 05:58 | 18:41 |
Tuesday, 30th September 2025 | 06:26 | 18:03 |
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