Achill Island weather in December 2025

Expect daytime maximum temperatures of 48°F in Achill Island, Ireland in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 22 days with some rainfall and typically 5.2 inches of rainfall in the month.

  • 48°F maximum daytime temperature in December in Achill Island48
    48°F max day temperature
  • 1 hour of sunshine per day
  • 22 days with some rainfall in December in Achill Island22
    22 days with some rainfall
  • 39°F minimum night-time temperature in December in Achill Island39
    39°F min night temperature
  • 7 hours of daylight per day in December in Achill Island7
    7 hours of daylight per day
  • No heat & humidity in December in Achill Island0
    No heat & humidity
  • 5.2 inches monthly rainfall in December in Achill Island5.2
    5.2 inches of monthly rainfall
  • No UV (maximum) index in December in Achill Island0
    No UV (Maximum) Index UV index
  • 50°F sea temperature in December in Achill Island50
    50°F sea temperature

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The December 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 December?

Daytime temperatures usually reach 48°F in Achill Island in December, falling to 39°F at night.

How sunny is it in Achill Island in December?

There are normally 1 hour of bright sunshine each day in Achill Island in December - that's 15% of daylight hours.

How warm is the sea around Achill Island in December?

The average sea temperature around Achill Island in December is 50°F.

Does it rain in Achill Island in December?

There are usually 22 days with some rain in Achill Island in December and the average monthly rainfall is 5.2 inches.

Achill Island December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 08:36 16:22
Tuesday, 16th December 2025 08:54 16:18
Wednesday, 31st December 2025 08:59 16:28

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