Achill Island weather in October 2025

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

  • 55°F maximum daytime temperature in October in Achill Island55
    55°F max day temperature
  • 3 hours of sunshine per day
  • 21 days with some rainfall in October in Achill Island21
    21 days with some rainfall
  • 46°F minimum night-time temperature in October in Achill Island46
    46°F min night temperature
  • 10 hours of daylight per day in October in Achill Island10
    10 hours of daylight per day
  • No heat & humidity in October in Achill Island0
    No heat & humidity
  • 5.4 inches monthly rainfall in October in Achill Island5.4
    5.4 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in October in Achill Island2
    2 (Low) UV index
  • 55°F sea temperature in October in Achill Island55
    55°F sea temperature

More about Achill Island

Achill Island by month

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The October weather guide for Ireland (Achill Island) 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)

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More about Ireland

How warm is it in Achill Island in October?

Daytime temperatures usually reach 55°F in Achill Island in October, falling to 46°F at night.

How sunny is it in Achill Island in October?

There are normally 3 hours of bright sunshine each day in Achill Island in October - that's 25% of daylight hours.

How warm is the sea around Achill Island in October?

The average sea temperature around Achill Island in October is 55°F.

Does it rain in Achill Island in October?

There are usually 21 days with some rain in Achill Island in October and the average monthly rainfall is 5.4 inches.

Achill Island October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:42 18:16
Thursday, 16th October 2025 07:10 17:40
Friday, 31st October 2025 07:39 17:08

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