Northern Ireland weather in January 2025
Expect 7°C daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Northern Ireland in January. Check more long-term weather averages for Northern Ireland in January before you book your next holiday to Northern Ireland in 2025/2026.
- 77°C max day temperature
- 2 hours of sunshine per day
- 2020 days with some rainfall
- 11°C min night temperature
- 88 hours of daylight per day
- 0No heat & humidity
- 101101 mm of monthly rainfall
- 0No UV (Maximum) Index UV index
- 99°C sea temperature
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