Caernarfon weather in January 2026

Expect 7°C daytime maximum temperatures in the shade with on average 1 hour of sunshine per day in Caernarfon in January based on long-term weather averages. There is usually 20 days with some rainfall and 164 mm of average monthly rainfall in January.

  • 7°C maximum daytime temperature in January in Caernarfon7
    7°C max day temperature
  • 1 hour of sunshine per day
  • 20 days with some rainfall in January in Caernarfon20
    20 days with some rainfall
  • 2°C minimum night-time temperature in January in Caernarfon2
    2°C min night temperature
  • 8 hours of daylight per day in January in Caernarfon8
    8 hours of daylight per day
  • No heat & humidity in January in Caernarfon0
    No heat & humidity
  • 164 mm monthly rainfall in January in Caernarfon164
    164 mm of monthly rainfall
  • No UV (maximum) index in January in Caernarfon0
    No UV (Maximum) Index UV index
  • 8°C sea temperature in January in Caernarfon8
    8°C sea temperature

More about Caernarfon

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The January weather guide for Wales (Caernarfon) 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 Wales

How cold is it in Caernarfon in January?

Daytime temperatures usually reach 7°C in Caernarfon in January, falling to 2°C at night.

How sunny is it in Caernarfon in January?

There are normally 1 hour of bright sunshine each day in Caernarfon in January - that's 17% of daylight hours.

Is the sea cold around Caernarfon in January?

The average sea temperature around Caernarfon in January is 8°C.

Does it rain in Caernarfon in January?

There are usually 20 days with some rain in Caernarfon in January and the average monthly rainfall is 164mm.

Caernarfon January sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 08:31 16:10
Friday, 16th January 2026 08:22 16:32
Saturday, 31st January 2026 08:03 16:59

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