Dublin weather in January 2026

Expect daytime maximum temperatures of 46°F in Dublin, Ireland in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 18 days with some rainfall and typically 2.4 inches of rainfall in the month.

  • 46°F maximum daytime temperature in January in Dublin46
    46°F max day temperature
  • 2 hours of sunshine per day
  • 18 days with some rainfall in January in Dublin18
    18 days with some rainfall
  • 37°F minimum night-time temperature in January in Dublin37
    37°F 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
  • 2.4 inches monthly rainfall in January in Dublin2.4
    2.4 inches of monthly rainfall
  • No UV (maximum) index in January in Dublin0
    No UV (Maximum) Index UV index
  • 48°F sea temperature in January in Dublin48
    48°F 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)  |  Imperial (°F)

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More about Ireland

How warm is it in Dublin in January?

Daytime temperatures usually reach 46°F in Dublin in January, falling to 37°F 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.

How warm is the sea around Dublin in January?

The average sea temperature around Dublin in January is 48°F.

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 2.4 inches.

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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