UV index and sunburn time in South Korea
Peak UV index and how quickly unprotected skin burns, for 9 cities in South Korea.
| City | Peak UV | Category | Month | Burns after |
|---|---|---|---|---|
| Seoul | 9.9 | Very high | July | 24 min |
| Busan | 10.6 | Very high | July | 22 min |
| Incheon | 9.9 | Very high | July | 23 min |
| Daegu | 10.4 | Very high | July | 22 min |
| Daejeon | 10.3 | Very high | July | 23 min |
| Gwangju | 10.6 | Very high | July | 22 min |
| Suwon | 10.0 | Very high | July | 23 min |
| Ulsan | 10.5 | Very high | July | 22 min |
| Goyang-si | 9.9 | 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 South Korea →
Burn times are for skin type III with no sunscreen. How these are calculated