Live UV forecast for 147 cities
South Korea stretches from 33.2533° to 38.3788° latitude (Northern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 8.3 in Ara-dong (peak in June), while in Yangp'yong the yearly maximum is only ≈ 8.1.
| Zone | Cities | J | F | M | A | M | J | J | A | S | O | N | D | Peak |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subtropical | 25 | 4 | 5 | 6.3 | 7.4 | 8 | 8.3 | 8.2 | 7.8 | 7 | 5.8 | 4.7 | 3.9 | 8.3 |
| Temperate | 122 | 3.7 | 4.7 | 6.1 | 7.3 | 7.9 | 8.2 | 8.1 | 7.6 | 6.8 | 5.6 | 4.4 | 3.6 | 8.2 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using Seoul as a reference: the UV index reaches 6+ in April, May, June, July, August and September. In the sunniest zones (see table) SPF 30–50+ is needed almost year-round; in the mildest — only in late spring and summer.
The calculated clear-sky maximum is ≈ 8.3 — in Ara-dong around June. Values above this occur only near the equator and in high mountains.
Ara-dong (peak ≈ 8.3), followed by Beolgyo and Boseong. The mildest sun is in Yangp'yong (max ≈ 8.1).
In Seoul and similar latitudes the UV reaches 6+ in April, May, June, July, August and September: use SPF 30–50+ on sunny days. Protection is advised from UV 3.
No — the local maximum is ≈ 8.3. UV 11+ occurs only near the equator, in deserts and high mountains.