Colwyn Bay weather in May 2025

Expect 14°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Colwyn Bay in May. Check more long-term weather averages for Colwyn Bay in May before you book your next holiday to Wales in 2025/2026.

  • 14°C maximum daytime temperature in May in Colwyn Bay14
    14°C max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in May in Colwyn Bay16
    16 days with some rainfall
  • 6°C minimum night-time temperature in May in Colwyn Bay6
    6°C min night temperature
  • 16 hours of daylight per day in May in Colwyn Bay16
    16 hours of daylight per day
  • No heat & humidity in May in Colwyn Bay0
    No heat & humidity
  • 73 mm monthly rainfall in May in Colwyn Bay73
    73 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Colwyn Bay5
    5 (Moderate) UV index
  • 11°C sea temperature in May in Colwyn Bay11
    11°C sea temperature

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The May weather guide for Wales (Colwyn Bay) 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 Colwyn Bay in May?

Daytime temperatures usually reach 14°C in Colwyn Bay in May, falling to 6°C at night.

How sunny is it in Colwyn Bay in May?

There are normally 6 hours of bright sunshine each day in Colwyn Bay in May - that's 39% of daylight hours.

Is the sea cold around Colwyn Bay in May?

The average sea temperature around Colwyn Bay in May is 11°C.

Does it rain in Colwyn Bay in May?

There are usually 16 days with some rain in Colwyn Bay in May and the average monthly rainfall is 73mm.

Colwyn Bay May sunrise & sunset times

Browse the sunrise and sunset times for Colwyn Bay in May 2025. Select a month to view Colwyn Bay sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:41 19:45
Friday, 16th May 2025 04:13 20:10
Saturday, 31st May 2025 03:55 20:31

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