Castletownbere weather in December 2025

Expect 9°C daytime maximum temperatures in the shade with on average 1 hour of sunshine per day in Castletownbere in December based on long-term weather averages. There is usually 23 days with some rainfall and 174 mm of average monthly rainfall in December.

  • 9°C maximum daytime temperature in December in Castletownbere9
    9°C max day temperature
  • 1 hour of sunshine per day
  • 23 days with some rainfall in December in Castletownbere23
    23 days with some rainfall
  • 4°C minimum night-time temperature in December in Castletownbere4
    4°C 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
  • 174 mm monthly rainfall in December in Castletownbere174
    174 mm of monthly rainfall
  • No UV (maximum) index in December in Castletownbere0
    No UV (Maximum) Index UV index
  • 10°C sea temperature in December in Castletownbere10
    10°C 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 / mm)  |  Imperial (°F / inches)

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More about Ireland

How warm is it in Castletownbere in December?

Daytime temperatures usually reach 9°C in Castletownbere in December, falling to 4°C 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.

Is the sea cold around Castletownbere in December?

The average sea temperature around Castletownbere in December is 10°C.

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 174mm.

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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