Unit Settings

Measurement preferences are saved

Temperature
Rainfall
Swell Height
Tide Height
Wind Speed
Distance
Pressure

Now

Max UV Today
7.2 High

High risk of harm from unprotected Sun exposure. Alert in effect for 7 hours between 10am–5pm.

Get WillyWeather+ to remove ads

Trending Locations

London, Greater London SW1Y 5
Bristol, Bristol BS1 3
Cambridge, Cambridgeshire CB1 1
Norwich, Norfolk NR3 1
Bournemouth, Dorset BH2 5
Nottingham, Nottinghamshire NG1 5
Sheffield, South Yorkshire S1 2
Colchester, Essex CO3 3
Oxford, Oxfordshire OX1 3
Belfast, Belfast BT1 3

Weather Wind Rainfall Sun Moon UV Tides Swell

Weather
Wind
Rainfall
Sun
Moon
UV
Tides
Swell
Warnings
Maps
Graphs

Efailnewydd UV Index

United Kingdom
WL
Gwynedd
Efailnewydd

Graph Plots Open in Graphs

UV Forecast NOAA

Efailnewydd UV forecast issued yesterday at 7:51 pm. Next forecast at approx. 7:51 pm.

UV Index

Get WillyWeather+ to remove ads

Data Sources

Weather information based on data supplied by the Met Office and other sources
© 2026 WillyWeather

Products

Accounts
Website Widgets
Website Warnings
Advertising

WillyWeather 1.46.14

Terms and Conditions
About Us

Contact

Facebook
Twitter
Contact Us