Weather in Seoul
What's the weather like in Seoul?
Seoul has a wide swing between hot summers and cold winters and moderate rainfall spread across the year. Average daytime highs range from 2°C (36°F) in January to 29°C (84°F) in July, with overnight lows around -6°C (21°F) and 22°C (72°F) respectively.
For comfortable sightseeing temperatures (18–26°C daytime highs), the best months to visit Seoul are May through June, and September through October.
Quick facts
- Country
- 🇰🇷 South Korea
- Region
- Asia
- Time zone
- Asia/Seoul
- Coordinates
- 37.566, 126.978
Monthly climate
Long-run averages for each month of the year.
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 2°C / 36°F | -6°C / 21°F | 20 mm | 7 | 3 |
| February | 4°C / 39°F | -3°C / 27°F | 25 mm | 7 | 2 |
| March | 10°C / 50°F | 1°C / 34°F | 45 mm | 8 | — |
| April | 17°C / 63°F | 7°C / 45°F | 75 mm | 9 | — |
| May | 23°C / 73°F | 13°C / 55°F | 105 mm | 10 | — |
| June | 27°C / 81°F | 18°C / 64°F | 130 mm | 11 | — |
| July | 29°C / 84°F | 22°C / 72°F | 395 mm | 16 | — |
| August | 30°C / 86°F | 22°C / 72°F | 365 mm | 14 | — |
| September | 26°C / 79°F | 17°C / 63°F | 170 mm | 9 | — |
| October | 19°C / 66°F | 10°C / 50°F | 55 mm | 6 | — |
| November | 11°C / 52°F | 3°C / 37°F | 55 mm | 8 | 1 |
| December | 4°C / 39°F | -3°C / 27°F | 20 mm | 7 | 3 |
Seoul by month
Detailed weather for any specific month:
Cities with a similar climate to Seoul
Frequently asked questions
When is the best time to visit Seoul?
The most comfortable months in Seoul are usually May, September, October, when average highs sit near 18–26°C (64–79°F) with relatively little rain. See the full month-by-month breakdown for the exact figures.
What is the hottest month in Seoul?
August is typically the hottest month in Seoul, averaging a high of 30°C (86°F).
What is the coldest month in Seoul?
January is usually the coldest, with average lows around -6°C (21°F).
Does it snow in Seoul?
Yes — Seoul sees some snow, mainly around January (about 3 snow days). Most other months stay snow-free.
Live forecast, sunrise/sunset, and more.