UV index and sunburn time in French Guiana
Peak UV index and how quickly unprotected skin burns, for 1 city in French Guiana.
| City | Peak UV | Category | Month | Burns after |
|---|---|---|---|---|
| Cayenne | 16.7 | Extreme | September | 14 min |
The same UV also drives vitamin D synthesis — and stops entirely for part of the year at higher latitudes. Vitamin D winters in French Guiana →
Burn times are for skin type III with no sunscreen. How these are calculated