UV index and sunburn time in North Korea
Peak UV index and how quickly unprotected skin burns, for 3 cities in North Korea.
| City | Peak UV | Category | Month | Burns after |
|---|---|---|---|---|
| Pyongyang | 9.5 | Very high | July | 25 min |
| Hamhŭng | 9.3 | Very high | July | 25 min |
| Namp’o | 9.6 | Very high | July | 24 min |
The same UV also drives vitamin D synthesis — and stops entirely for part of the year at higher latitudes. Vitamin D winters in North Korea →
Burn times are for skin type III with no sunscreen. How these are calculated