Rosslare weather in December 2025

Expect daytime maximum temperatures of 9°C in Rosslare, Ireland in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 21 days with some rainfall and typically 102 mm of rainfall in the month.

  • 9°C maximum daytime temperature in December in Rosslare9
    9°C max day temperature
  • 2 hours of sunshine per day
  • 21 days with some rainfall in December in Rosslare21
    21 days with some rainfall
  • 5°C minimum night-time temperature in December in Rosslare5
    5°C min night temperature
  • 8 hours of daylight per day in December in Rosslare8
    8 hours of daylight per day
  • No heat & humidity in December in Rosslare0
    No heat & humidity
  • 102 mm monthly rainfall in December in Rosslare102
    102 mm of monthly rainfall
  • No UV (maximum) index in December in Rosslare0
    No UV (Maximum) Index UV index
  • 10°C sea temperature in December in Rosslare10
    10°C sea temperature

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

Daytime temperatures usually reach 9°C in Rosslare in December, falling to 5°C at night.

How sunny is it in Rosslare in December?

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

Is the sea cold around Rosslare in December?

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

Does it rain in Rosslare in December?

There are usually 21 days with some rain in Rosslare in December and the average monthly rainfall is 102mm.

Rosslare December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 08:13 16:16
Tuesday, 16th December 2025 08:30 16:13
Wednesday, 31st December 2025 08:35 16:22

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