Arklow weather in December 2025

Expect daytime maximum temperatures of 48°F in Arklow, Ireland in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 18 days with some rainfall and typically 4.4 inches of rainfall in the month.

  • 48°F maximum daytime temperature in December in Arklow48
    48°F max day temperature
  • 2 hours of sunshine per day
  • 18 days with some rainfall in December in Arklow18
    18 days with some rainfall
  • 39°F minimum night-time temperature in December in Arklow39
    39°F min night temperature
  • 8 hours of daylight per day in December in Arklow8
    8 hours of daylight per day
  • No heat & humidity in December in Arklow0
    No heat & humidity
  • 4.4 inches monthly rainfall in December in Arklow4.4
    4.4 inches of monthly rainfall
  • No UV (maximum) index in December in Arklow0
    No UV (Maximum) Index UV index
  • 50°F sea temperature in December in Arklow50
    50°F sea temperature

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

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

How sunny is it in Arklow in December?

There are normally 2 hours of bright sunshine each day in Arklow in December - that's 22% of daylight hours.

How warm is the sea around Arklow in December?

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

Does it rain in Arklow in December?

There are usually 18 days with some rain in Arklow in December and the average monthly rainfall is 4.4 inches.

Arklow December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 08:14 16:13
Tuesday, 16th December 2025 08:31 16:09
Wednesday, 31st December 2025 08:37 16:19

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