Dublin weather in January 2026

Expect 8°C daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Dublin in January based on long-term weather averages. There is usually 18 days with some rainfall and 62 mm of average monthly rainfall in January.

  • 8°C maximum daytime temperature in January in Dublin8
    8°C max day temperature
  • 2 hours of sunshine per day
  • 18 days with some rainfall in January in Dublin18
    18 days with some rainfall
  • 3°C minimum night-time temperature in January in Dublin3
    3°C min night temperature
  • 8 hours of daylight per day in January in Dublin8
    8 hours of daylight per day
  • No heat & humidity in January in Dublin0
    No heat & humidity
  • 62 mm monthly rainfall in January in Dublin62
    62 mm of monthly rainfall
  • No UV (maximum) index in January in Dublin0
    No UV (Maximum) Index UV index
  • 9°C sea temperature in January in Dublin9
    9°C sea temperature

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The January weather guide for Ireland (Dublin) 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 Dublin in January?

Daytime temperatures usually reach 8°C in Dublin in January, falling to 3°C at night.

How sunny is it in Dublin in January?

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

Is the sea cold around Dublin in January?

The average sea temperature around Dublin in January is 9°C.

Does it rain in Dublin in January?

There are usually 18 days with some rain in Dublin in January and the average monthly rainfall is 62mm.

Dublin January sunrise & sunset times

Browse the sunrise and sunset times for Dublin in January 2026. Select a month to view Dublin sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 08:40 16:17
Friday, 16th January 2026 08:31 16:39
Saturday, 31st January 2026 08:11 17:06

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