Caernarfon weather in August 2026

Expect daytime maximum temperatures of 64°F in Caernarfon, Wales in August based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 5.2 inches of rainfall in the month.

  • 64°F maximum daytime temperature in August in Caernarfon64
    64°F max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in August in Caernarfon15
    15 days with some rainfall
  • 52°F minimum night-time temperature in August in Caernarfon52
    52°F min night temperature
  • 15 hours of daylight per day in August in Caernarfon15
    15 hours of daylight per day
  • No heat & humidity in August in Caernarfon0
    No heat & humidity
  • 5.2 inches monthly rainfall in August in Caernarfon5.2
    5.2 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Caernarfon5
    5 (Moderate) UV index
  • 61°F sea temperature in August in Caernarfon61
    61°F sea temperature

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The August 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)  |  Imperial (°F)

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More about Wales

How hot is it in Caernarfon in August?

Daytime temperatures usually reach 64°F in Caernarfon in August, falling to 52°F at night.

How sunny is it in Caernarfon in August?

There are normally 5 hours of bright sunshine each day in Caernarfon in August - that's 36% of daylight hours.

How warm is the sea around Caernarfon in August?

The average sea temperature around Caernarfon in August is 61°F.

Does it rain in Caernarfon in August?

There are usually 15 days with some rain in Caernarfon in August and the average monthly rainfall is 5.2 inches.

Caernarfon August sunrise & sunset times

Browse the sunrise and sunset times for Caernarfon in August 2026. Select a month to view Caernarfon sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st August 2026 04:34 20:12
Sunday, 16th August 2026 04:59 19:42
Monday, 31st August 2026 05:25 19:09

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