Castletownbere weather in December 2025

Expect daytime maximum temperatures of 48°F in Castletownbere, Ireland in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 23 days with some rainfall and typically 6.9 inches of rainfall in the month.

  • 48°F maximum daytime temperature in December in Castletownbere48
    48°F max day temperature
  • 1 hour of sunshine per day
  • 23 days with some rainfall in December in Castletownbere23
    23 days with some rainfall
  • 39°F minimum night-time temperature in December in Castletownbere39
    39°F min night temperature
  • 8 hours of daylight per day in December in Castletownbere8
    8 hours of daylight per day
  • No heat & humidity in December in Castletownbere0
    No heat & humidity
  • 6.9 inches monthly rainfall in December in Castletownbere6.9
    6.9 inches of monthly rainfall
  • No UV (maximum) index in December in Castletownbere0
    No UV (Maximum) Index UV index
  • 50°F sea temperature in December in Castletownbere50
    50°F sea temperature

More about Castletownbere

Castletownbere by month

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The December weather guide for Ireland (Castletownbere) 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 Castletownbere in December?

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

How sunny is it in Castletownbere in December?

There are normally 1 hour of bright sunshine each day in Castletownbere in December - that's 16% of daylight hours.

How warm is the sea around Castletownbere in December?

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

Does it rain in Castletownbere in December?

There are usually 23 days with some rain in Castletownbere in December and the average monthly rainfall is 6.9 inches.

Castletownbere December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 08:24 16:33
Tuesday, 16th December 2025 08:40 16:30
Wednesday, 31st December 2025 08:46 16:40

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