Best time to visit Caernarfon

Find the best time to visit Caernarfon and plan your perfect trip in 2024/2025. Get holiday inspiration, weather guides, travel advice and find great deals.

Caernarfon by month

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

Recommended for Wales

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When is the best time to visit Caernarfon?

The best time to visit Caernarfon is July based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

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Max Day Temperature (°C)

  • 7°C maximum daytime temperature in January in Caernarfon7
    Jan
  • 7°C maximum daytime temperature in February in Caernarfon7
    Feb
  • 8°C maximum daytime temperature in March in Caernarfon8
    Mar
  • 11°C maximum daytime temperature in April in Caernarfon11
    Apr
  • 14°C maximum daytime temperature in May in Caernarfon14
    May
  • 17°C maximum daytime temperature in June in Caernarfon17
    Jun
  • 18°C maximum daytime temperature in July in Caernarfon18
    Jul
  • 18°C maximum daytime temperature in August in Caernarfon18
    Aug
  • 16°C maximum daytime temperature in September in Caernarfon16
    Sep
  • 14°C maximum daytime temperature in October in Caernarfon14
    Oct
  • 10°C maximum daytime temperature in November in Caernarfon10
    Nov
  • 8°C maximum daytime temperature in December in Caernarfon8
    Dec

Hours of Sunshine (daily)

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

Best time to visit

The weather guide for Wales (Caernarfon) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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Which is the hottest month in Caernarfon?

The hottest time of year in Caernarfon is normally July. Expect maximum daytime temperatures to reach 18°C.

Which month has the most rain in Caernarfon?

In terms of rainfall, December is usually the wettest month in Caernarfon with 183mm on average. There are normally 20 days in December with some rain.

When is it sunniest in Caernarfon?

The sunniest time of year in Caernarfon is normally May with bright sunshine on average for 40% of daylight hours; that's 6 hours of sunshine per day.

When is the sea warmest in Caernarfon?

The sea is usually at its warmest in Caernarfon in August when the water temperature reaches 16°C.

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