UV index and sunburn time in Czechia
Peak UV index and how quickly unprotected skin burns, for 4 cities in Czechia.
| City | Peak UV | Category | Month | Burns after |
|---|---|---|---|---|
| Prague | 6.8 | High | July | 34 min |
| Brno | 7.0 | High | July | 33 min |
| Ostrava | 6.9 | High | July | 34 min |
| Liberec | 6.7 | High | July | 35 min |
The same UV also drives vitamin D synthesis — and stops entirely for part of the year at higher latitudes. Vitamin D winters in Czechia →
Burn times are for skin type III with no sunscreen. How these are calculated