Cornwall UV Index Today

The live UV index at beaches across Cornwall is shown above, updated hourly. UV levels vary throughout the day, peaking between 11am and 3pm. In late March and early April, Cornwall’s UV typically reaches 3 to 4 at midday, rising to 7 to 8 in midsummer.

Yes, from April to September whenever the UV index exceeds 3. In midsummer, Cornwall’s UV can reach 7 to 8, meaning unprotected skin can burn in under 20 minutes. The sea and sand reflect UV, increasing exposure at the beach. SPF 30 or higher is recommended, reapplied every 2 hours and after swimming.

Absolutely. Up to 80 percent of UV rays penetrate cloud cover, so you can burn on overcast days, especially near the sea where water and sand reflect UV. Cornwall’s frequent light cloud can give a false sense of security. Always check the UV index before spending extended time outdoors, regardless of cloud cover.

UV 0 to 2 is Low (no protection needed). UV 3 to 5 is Moderate (seek shade at midday, wear sunscreen). UV 6 to 7 is High (reduce time in direct sun from 11am to 3pm). UV 8 to 10 is Very High (avoid midday sun, cover up). UV 11 or above is Extreme (rare in Cornwall). Children and fair-skinned people should take extra care at all levels above 3.