Roscommon weather in January 2026

Expect 7°C daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Roscommon in January based on long-term weather averages. There is usually 22 days with some rainfall and 100 mm of average monthly rainfall in January.

  • 7°C maximum daytime temperature in January in Roscommon7
    7°C max day temperature
  • 2 hours of sunshine per day
  • 22 days with some rainfall in January in Roscommon22
    22 days with some rainfall
  • 1°C minimum night-time temperature in January in Roscommon1
    1°C min night temperature
  • 8 hours of daylight per day in January in Roscommon8
    8 hours of daylight per day
  • No heat & humidity in January in Roscommon0
    No heat & humidity
  • 100 mm monthly rainfall in January in Roscommon100
    100 mm of monthly rainfall
  • No UV (maximum) index in January in Roscommon0
    No UV (Maximum) Index UV index

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The January weather guide for Ireland (Roscommon) 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 cold is it in Roscommon in January?

Daytime temperatures usually reach 7°C in Roscommon in January, falling to 1°C at night.

How sunny is it in Roscommon in January?

There are normally 2 hours of bright sunshine each day in Roscommon in January - that's 19% of daylight hours.

Does it rain in Roscommon in January?

There are usually 22 days with some rain in Roscommon in January and the average monthly rainfall is 100mm.

Roscommon January sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 08:50 16:23
Friday, 16th January 2026 08:40 16:45
Saturday, 31st January 2026 08:20 17:13

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