Caernarfon weather in June 2025

Expect daytime maximum temperatures of 17°C in Caernarfon in June based on long-term weather averages. There are 6 hours of sunshine per day on average with 14 days with some rainfall and typically 94 mm of rainfall in the month.

  • 17°C maximum daytime temperature in June in Caernarfon17
    17°C max day temperature
  • 6 hours of sunshine per day
  • 14 days with some rainfall in June in Caernarfon14
    14 days with some rainfall
  • 9°C minimum night-time temperature in June in Caernarfon9
    9°C min night temperature
  • 17 hours of daylight per day in June in Caernarfon17
    17 hours of daylight per day
  • No heat & humidity in June in Caernarfon0
    No heat & humidity
  • 94 mm monthly rainfall in June in Caernarfon94
    94 mm of monthly rainfall
  • UV (maximum) index 6 (High) in June in Caernarfon6
    6 (High) UV index
  • 13°C sea temperature in June in Caernarfon13
    13°C sea temperature

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The June 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 warm is it in Caernarfon in June?

Daytime temperatures usually reach 17°C in Caernarfon in June, falling to 9°C at night.

How sunny is it in Caernarfon in June?

There are normally 6 hours of bright sunshine each day in Caernarfon in June - that's 37% of daylight hours.

How warm is the sea around Caernarfon in June?

The average sea temperature around Caernarfon in June is 13°C.

Does it rain in Caernarfon in June?

There are usually 14 days with some rain in Caernarfon in June and the average monthly rainfall is 94mm.

Caernarfon June sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st June 2025 03:57 20:34
Sunday, 15th June 2025 03:50 20:46
Monday, 30th June 2025 03:54 20:47

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