SeasonMapSouth Korea in September
September is South Korea's 7th-best month (rank 7 of 12): its 10 destinations average 66/100, led by Incheon at 76 — 28°C and 9 rainy days — while Pyeongchang trails at 15 with 167 mm of rain.
#7 of 12 months for South Korea · 10 destinations · updated September 2026 · climate normals from ERA5 reanalysis
Where in South Korea in September
| # | Place | Type | Feels-like high | Rain | Comfort | At its best |
|---|---|---|---|---|---|---|
| 1 | Incheon | City | 28°C | 148 mm · 9 days | 76 tier B | — |
| 2 | Seoul | City | 30°C | 148 mm · 9 days | 75 tier B | — |
| 3 | Gangneung | Beach | 27°C | 221 mm · 14 days | 74 tier B | — |
| 4 | Sokcho | Beach | 26°C | 194 mm · 12 days | 73 tier B | — |
| 5 | Daegu | City | 29°C | 187 mm · 11 days | 72 tier B | — |
| 6 | Jeonju | City | 30°C | 172 mm · 11 days | 71 tier B | — |
| 7 | Gyeongju | City | 28°C | 219 mm · 13 days | 69 tier C | — |
| 8 | Jeju | Island | 30°C | 239 mm · 15 days | 69 tier C | — |
| 9 | Busan | City | 30°C | 237 mm · 13 days | 65 tier C | — |
| 10 | Pyeongchang | Ski resort | 27°C | 167 mm · 11 days | 15 tier F | — |
Comfort is SeasonMap's 0–100 score; each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. "At its best" means September is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.
What's on in South Korea in September
- Chuseok · Seoul and 4 more places · 24–26 Sep
- Buckwheat flowers at Bongpyeong · Pyeongchang · 25 Aug – 15 Sep (usually)
Seasons in force
Peak crowds at 3 of South Korea's 3 well-known places this month.