Caernarfon weather in May 2025

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

  • 14°C maximum daytime temperature in May in Caernarfon14
    14°C max day temperature
  • 6 hours of sunshine per day
  • 15 days with some rainfall in May in Caernarfon15
    15 days with some rainfall
  • 7°C minimum night-time temperature in May in Caernarfon7
    7°C min night temperature
  • 16 hours of daylight per day in May in Caernarfon16
    16 hours of daylight per day
  • No heat & humidity in May in Caernarfon0
    No heat & humidity
  • 90 mm monthly rainfall in May in Caernarfon90
    90 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Caernarfon5
    5 (Moderate) UV index
  • 10°C sea temperature in May in Caernarfon10
    10°C sea temperature

More about Caernarfon

Caernarfon by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Wales

Luxury Cottages discount code: £50 off UK cottages

  • Save EXTRA £50 on UK breaks with Luxury Cottages
  • No minimum stay. Book online with exclusive discount code
  • Offer cannot be combined with other promotions
Show discount codeShow discount code ******C50
Redeem Luxury Cottages discount code >>

Expires at 23:59 on Tuesday 31st Dec 2024 · View all Luxury Cottages offers

Luxury CottagesUK holiday finder

The May 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)

Back to top

More about Wales

How warm is it in Caernarfon in May?

Daytime temperatures usually reach 14°C in Caernarfon in May, falling to 7°C at night.

How sunny is it in Caernarfon in May?

There are normally 6 hours of bright sunshine each day in Caernarfon in May - that's 40% of daylight hours.

Is the sea cold around Caernarfon in May?

The average sea temperature around Caernarfon in May is 10°C.

Does it rain in Caernarfon in May?

There are usually 15 days with some rain in Caernarfon in May and the average monthly rainfall is 90mm.

Caernarfon May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:43 19:46
Friday, 16th May 2025 04:16 20:12
Saturday, 31st May 2025 03:58 20:33

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^