Aberystwyth weather in December 2025

Expect 8°C daytime maximum temperatures in the shade with on average 1 hour of sunshine per day in Aberystwyth in December based on long-term weather averages. There is usually 20 days with some rainfall and 137 mm of average monthly rainfall in December.

  • 8°C maximum daytime temperature in December in Aberystwyth8
    8°C max day temperature
  • 1 hour of sunshine per day
  • 20 days with some rainfall in December in Aberystwyth20
    20 days with some rainfall
  • 3°C minimum night-time temperature in December in Aberystwyth3
    3°C min night temperature
  • 8 hours of daylight per day in December in Aberystwyth8
    8 hours of daylight per day
  • No heat & humidity in December in Aberystwyth0
    No heat & humidity
  • 137 mm monthly rainfall in December in Aberystwyth137
    137 mm of monthly rainfall
  • No UV (maximum) index in December in Aberystwyth0
    No UV (Maximum) Index UV index
  • 9°C sea temperature in December in Aberystwyth9
    9°C sea temperature

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Aberystwyth by month

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The December weather guide for Wales (Aberystwyth) 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 warm is it in Aberystwyth in December?

Daytime temperatures usually reach 8°C in Aberystwyth in December, falling to 3°C at night.

How sunny is it in Aberystwyth in December?

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

Is the sea cold around Aberystwyth in December?

The average sea temperature around Aberystwyth in December is 9°C.

Does it rain in Aberystwyth in December?

There are usually 20 days with some rain in Aberystwyth in December and the average monthly rainfall is 137mm.

Aberystwyth December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 08:04 16:06
Tuesday, 16th December 2025 08:21 16:03
Wednesday, 31st December 2025 08:27 16:12

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