UV index and sunburn time in Switzerland
Peak UV index and how quickly unprotected skin burns, for 3 cities in Switzerland.
| City | Peak UV | Category | Month | Burns after |
|---|---|---|---|---|
| Zürich | 7.6 | High | July | 31 min |
| Geneva | 7.9 | High | July | 30 min |
| Basel | 7.5 | High | July | 31 min |
The same UV also drives vitamin D synthesis — and stops entirely for part of the year at higher latitudes. Vitamin D winters in Switzerland →
Burn times are for skin type III with no sunscreen. How these are calculated