Portstewart weather in January 2025

Expect 7°C daytime maximum temperatures in the shade with on average 1 hours of sunshine per day in Portstewart in January. Check more long-term weather averages for Portstewart in January before you book your next holiday to Northern Ireland in 2025/2026.

  • 7°C maximum daytime temperature in January in Portstewart7
    7°C max day temperature
  • 1 hour of sunshine per day
  • 22 days with some rainfall in January in Portstewart22
    22 days with some rainfall
  • 1°C minimum night-time temperature in January in Portstewart1
    1°C min night temperature
  • 8 hours of daylight per day in January in Portstewart8
    8 hours of daylight per day
  • No heat & humidity in January in Portstewart0
    No heat & humidity
  • 118 mm monthly rainfall in January in Portstewart118
    118 mm of monthly rainfall
  • No UV (maximum) index in January in Portstewart0
    No UV (Maximum) Index UV index
  • 9°C sea temperature in January in Portstewart9
    9°C sea temperature

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The January weather guide for Northern Ireland (Portstewart) 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 the UK

How cold is it in Portstewart in January?

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

How sunny is it in Portstewart in January?

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

Is the sea cold around Portstewart in January?

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

Does it rain in Portstewart in January?

There are usually 22 days with some rain in Portstewart in January and the average monthly rainfall is 118mm.

Portstewart January sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 08:53 16:09
Thursday, 16th January 2025 08:42 16:32
Friday, 31st January 2025 08:20 17:02

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