Live UV forecast for 865 cities
United Kingdom stretches from 50.1186° to 58.219° latitude (Northern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 7.3 in Camborne (peak in June), while in Isle of Lewis the yearly maximum is only ≈ 6.5.
| Zone | Cities | J | F | M | A | M | J | J | A | S | O | N | D | Peak |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperate | 796 | 1.6 | 2.6 | 4 | 5.6 | 6.5 | 7.1 | 6.9 | 6.1 | 4.9 | 3.5 | 2.3 | 1.5 | 7.1 |
| High-latitude | 69 | 1.2 | 2.1 | 3.6 | 5.1 | 6.1 | 6.7 | 6.5 | 5.6 | 4.5 | 3 | 1.8 | 1.1 | 6.7 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using London as a reference: the UV index reaches 6+ in May, June, July and August. In the sunniest zones (see table) SPF 30–50+ is needed almost year-round; in the mildest — only in late spring and summer.
The calculated clear-sky maximum is ≈ 7.3 — in Camborne around June. Values above this occur only near the equator and in high mountains.
Camborne (peak ≈ 7.3), followed by Falmouth and Penzance. The mildest sun is in Isle of Lewis (max ≈ 6.5).
In London and similar latitudes the UV reaches 6+ in May, June, July and August: use SPF 30–50+ on sunny days. Protection is advised from UV 3.
No — the local maximum is ≈ 7.3. UV 11+ occurs only near the equator, in deserts and high mountains.