Sligo weather in December 2025

Expect daytime maximum temperatures of 8°C in Sligo 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 141 mm of rainfall in the month.

  • 8°C maximum daytime temperature in December in Sligo8
    8°C max day temperature
  • 1 hour of sunshine per day
  • 23 days with some rainfall in December in Sligo23
    23 days with some rainfall
  • 2°C minimum night-time temperature in December in Sligo2
    2°C min night temperature
  • 7 hours of daylight per day in December in Sligo7
    7 hours of daylight per day
  • No heat & humidity in December in Sligo0
    No heat & humidity
  • 141 mm monthly rainfall in December in Sligo141
    141 mm of monthly rainfall
  • No UV (maximum) index in December in Sligo0
    No UV (Maximum) Index UV index
  • 10°C sea temperature in December in Sligo10
    10°C sea temperature

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

Daytime temperatures usually reach 8°C in Sligo in December, falling to 2°C at night.

How sunny is it in Sligo in December?

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

Is the sea cold around Sligo in December?

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

Does it rain in Sligo in December?

There are usually 23 days with some rain in Sligo in December and the average monthly rainfall is 141mm.

Sligo December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 08:31 16:14
Tuesday, 16th December 2025 08:49 16:10
Wednesday, 31st December 2025 08:54 16:20

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