Caernarfon weather
Live weather for Caernarfon on the Menai Strait — current temperature, wind, rain chance, sunrise and sunset, and an hourly forecast.
Caernarfon is 12°C and clear, light winds at 5.0 mph NE. Staying dry. High 23°, low 11°.
Next hours
How reliable is this forecast?
The forecast comes from the Met Office
The Caernarfon forecast comes from the Met Office, the UK's national weather service, and we refresh it every three hours. Weather is a forecast rather than a certainty, so today and tomorrow are the most reliable and the outlook can shift as each day gets closer.
Where the data comes from
Weather data is supplied by the Met Office. For official weather warnings, check the Met Office directly.
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About Caernarfon weather
Caernarfon is sheltered from the worst westerlies by Anglesey and from easterlies by Snowdonia, which makes it one of the driest spots in Gwynedd. Sea breezes off the Strait keep summer days comfortable rather than hot.
Caernarfon weather — FAQ
How often is the Caernarfon forecast updated?
The Caernarfon forecast on this page refreshes several times a day from the Met Office. The "last updated" time at the bottom of the page shows exactly when it was last pulled.
Are the times shown in GMT or BST?
All times on the page — including sunrise, sunset and the hourly forecast — are shown in UK local time (GMT in winter, BST in summer).
What does the rain-chance percentage mean?
It's the probability of at least a small amount of rain falling during that hour. A reading of 30% means roughly a one-in-three chance of some rain, not that it'll rain 30% of the time.
Where does the weather data come from?
Directly from the UK Met Office site-specific forecast for Caernarfon. We don't blend or interpret it — you're seeing the same underlying figures the Met Office publishes.
How reliable is this forecast?
The Caernarfon forecast comes from the Met Office, the UK's national weather service, and we refresh it every three hours. Weather is a forecast rather than a certainty, so today and tomorrow are the most reliable and the outlook can shift as each day gets closer.
Where does the weather data come from?
Weather data is supplied by the Met Office. For official weather warnings, check the Met Office directly.