Barmouth weather in December 2025

Expect daytime maximum temperatures of 45°F in Barmouth, Wales in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 20 days with some rainfall and typically 8.4 inches of rainfall in the month.

  • 45°F maximum daytime temperature in December in Barmouth45
    45°F max day temperature
  • 1 hour of sunshine per day
  • 20 days with some rainfall in December in Barmouth20
    20 days with some rainfall
  • 36°F minimum night-time temperature in December in Barmouth36
    36°F min night temperature
  • 8 hours of daylight per day in December in Barmouth8
    8 hours of daylight per day
  • No heat & humidity in December in Barmouth0
    No heat & humidity
  • 8.4 inches monthly rainfall in December in Barmouth8.4
    8.4 inches of monthly rainfall
  • No UV (maximum) index in December in Barmouth0
    No UV (Maximum) Index UV index
  • 48°F sea temperature in December in Barmouth48
    48°F sea temperature

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The December weather guide for Wales (Barmouth) 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 Wales

How cold is it in Barmouth in December?

Daytime temperatures usually reach 45°F in Barmouth in December, falling to 36°F at night.

How sunny is it in Barmouth in December?

There are normally 1 hour of bright sunshine each day in Barmouth in December - that's 16% of daylight hours.

How warm is the sea around Barmouth in December?

The average sea temperature around Barmouth in December is 48°F.

Does it rain in Barmouth in December?

There are usually 20 days with some rain in Barmouth in December and the average monthly rainfall is 8.4 inches.

Barmouth December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 08:06 16:05
Tuesday, 16th December 2025 08:23 16:01
Wednesday, 31st December 2025 08:28 16:11

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