Live UV forecast for 95 cities
Switzerland stretches from 46.0101° to 47.6973° latitude (Northern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 7.6 in Bellinzona (peak in June), while in Zug the yearly maximum is only ≈ 7.5.
| Zone | Cities | J | F | M | A | M | J | J | A | S | O | N | D | Peak |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperate | 95 | 2.3 | 3.3 | 4.7 | 6.2 | 7.1 | 7.5 | 7.4 | 6.6 | 5.6 | 4.2 | 3 | 2.2 | 7.5 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using Zuerich as a reference: the UV index reaches 6+ in April, 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 ≈ 7.6 — in Bellinzona around June. Values above this occur only near the equator and in high mountains.
Bellinzona (peak ≈ 7.6), followed by Bulle and Carouge. The mildest sun is in Zug (max ≈ 7.5).
In Zuerich and similar latitudes the UV reaches 6+ in April, May, June, July and August: use SPF 30–50+ on sunny days. Protection is advised from UV 3.
No — the local maximum is ≈ 7.6. UV 11+ occurs only near the equator, in deserts and high mountains.