UV index and sunburn time in Vietnam
Peak UV index and how quickly unprotected skin burns, for 7 cities in Vietnam.
| City | Peak UV | Category | Month | Burns after |
|---|---|---|---|---|
| Ho Chi Minh City | 15.8 | Extreme | August | 15 min |
| Hanoi | 14.1 | Extreme | July | 17 min |
| Haiphong | 14.1 | Extreme | August | 17 min |
| Cần Thơ | 15.9 | Extreme | August | 15 min |
| Huế | 15.1 | Extreme | August | 15 min |
| Da Nang | 15.2 | Extreme | August | 15 min |
| Biên Hòa | 15.8 | Extreme | August | 15 min |
The same UV also drives vitamin D synthesis — and stops entirely for part of the year at higher latitudes. Vitamin D winters in Vietnam →
Burn times are for skin type III with no sunscreen. How these are calculated