Northern Ireland weather in October 2025

Q: How warm is it in Northern Ireland in October?

Daytime temperatures usually reach 13°C in Belfast, Northern Ireland in October, falling to 7°C at night.

Q: How sunny is it in Northern Ireland in October?

There are normally 3 hours of bright sunshine each day in Belfast, Northern Ireland in October - that's 28% of daylight hours.

Q: How warm is the sea around Northern Ireland in October?

The average sea temperature around Belfast, Northern Ireland in October is 13°C.

Q: Does it rain in Northern Ireland in October?

There are usually 19 days with some rain in Belfast, Northern Ireland in October and the average monthly rainfall is 100mm.

Expect 55°F daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Northern Ireland in October. Check more long-term weather averages for Northern Ireland in October before you book your next holiday to Northern Ireland in 2025/2026.

55
55°F max day temperature
3
3 hours of sunshine per day
19
19 days with some rainfall
45
45°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
3.9
3.9 inches of monthly rainfall
2
2 (Low) UV index
55
55°F sea temperature

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The October weather guide for Northern Ireland (Belfast) 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 Northern Ireland destinations

Below are average maximum temperatures at popular countries, regions and places in Northern Ireland in October. Select a holiday destination to see more weather parameters.

55
Belfast
54
Londonderry

All Northern Ireland destinations

Metric (°C) | Imperial (°F)

More about the UK

How warm is it in Northern Ireland in October?

Daytime temperatures usually reach 55°F in Belfast, Northern Ireland in October, falling to 45°F at night.

How sunny is it in Northern Ireland in October?

There are normally 3 hours of bright sunshine each day in Belfast, Northern Ireland in October - that's 28% of daylight hours.

How warm is the sea around Northern Ireland in October?

The average sea temperature around Belfast, Northern Ireland in October is 55°F.

Does it rain in Northern Ireland in October?

There are usually 19 days with some rain in Belfast, Northern Ireland in October and the average monthly rainfall is 3.9 inches.

Northern Ireland October sunrise & sunset times

Browse the sunrise and sunset times for Northern Ireland in October 2025. Select a month to view Northern Ireland sunrise and sunset times for the next 12 months. The Northern Ireland sunrise and sunset times shown below are for Belfast.

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