Belfast weather in October 2025

Expect 13°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Belfast in October. Check more long-term weather averages for Belfast in October before you book your next holiday to Northern Ireland in 2025/2026.

  • 13°C maximum daytime temperature in October in Belfast13
    13°C max day temperature
  • 3 hours of sunshine per day
  • 19 days with some rainfall in October in Belfast19
    19 days with some rainfall
  • 7°C minimum night-time temperature in October in Belfast7
    7°C min night temperature
  • 10 hours of daylight per day in October in Belfast10
    10 hours of daylight per day
  • No heat & humidity in October in Belfast0
    No heat & humidity
  • 100 mm monthly rainfall in October in Belfast100
    100 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in October in Belfast2
    2 (Low) UV index
  • 13°C sea temperature in October in Belfast13
    13°C 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.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about the UK

How warm is it in Belfast in October?

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

How sunny is it in Belfast in October?

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

How warm is the sea around Belfast in October?

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

Does it rain in Belfast in October?

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

Belfast October sunrise & sunset times

Browse the sunrise and sunset times for Belfast in October 2025. Select a month to view Belfast sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:26 17:59
Thursday, 16th October 2025 06:55 17:23
Friday, 31st October 2025 07:24 16:49

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