Quick decision
When to visit Seoul?
🌞 Best time overall
June
🌡️ Optimal temperature
18°C–27°C in June
🌧 Least rain
34% rainy days in June
🌧 Wettest month
December (15%)
📅 Best score
8.1/10
By trip type
Best time by type of trip
Joseon PalacesMarch–May or October — Gyeongbokgung, Changdeokgung and hanbok.
K-FoodYear-round — Korean BBQ, bibimbap, Myeongdong street food.
K-Pop & HallyuYear-round — Gangnam, HYBE, concerts and trendy districts.
Cherry BlossomsEarly April — Yeouido, palaces and Cheonggyecheon Stream.
JjimjilbangYear-round — Korean saunas, Dragon Hill Spa and Siloam.
Monthly climate data
Seoul weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌨️ January | -6°C | 2°C | 10% | 0.6 | 8.7h | 5.1/10 |
| 🌫️ February | -5°C | 5°C | 16% | 0.9 | 9.5h | 5.0/10 |
| ⛅ March | 0°C | 12°C | 20% | 1.4 | 10.1h | 7.0/10 |
| 🌤️ April | 6°C | 18°C | 22% | 2.1 | 11.0h | 7.3/10 |
| 🌤️ May | 12°C | 23°C | 27% | 3.6 | 11.9h | 8.0/10 |
| 🌤️ June | 18°C | 27°C | 34% | 4.2 | 11.1h | 8.1/10 |
| ⛅ July | 22°C | 29°C | 56% | 10.1 | 9.9h | 7.3/10 |
| 🌤️ August | 23°C | 30°C | 52% | 8.9 | 10.9h | 7.4/10 |
| 🌤️ September | 18°C | 25°C | 31% | 5.3 | 10.0h | 7.8/10 |
| 🌤️ October | 9°C | 18°C | 23% | 2.7 | 9.2h | 7.2/10 |
| ⛅ November | 2°C | 12°C | 20% | 1.7 | 8.8h | 6.4/10 |
| 🌨️ December | -5°C | 3°C | 15% | 0.9 | 8.4h | 4.8/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Good time
Average 18°C, 23% rainy days, 11.0h sunshine/day. Score: 7.4/10.
☀️ Summer (Jun–Aug) — Good time
Average 29°C, 47% rainy days, 10.6h sunshine/day. Score: 7.6/10.
🍂 Autumn (Sep–Nov) — Good time
Average 18°C, 25% rainy days, 9.3h sunshine/day. Score: 7.1/10.
❄️ Winter (Dec–Feb) — Challenging climate
Average 3°C, 14% rainy days, 8.9h sunshine/day. Score: 5.0/10.
Accommodation
Find a place to stay in Seoul
Check availability during the recommended period
Tip : off-peak months (December, January) are cheapest but weather is significantly worse.
Search on Hotels.comActivities & tours
Activities and tours in Seoul
Guided tours, skip-the-line tickets and local experiences.
Browse activities on GetYourGuide
Flights
Find a flight to Seoul
Compare flights from all airlines.
Search flights
Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
June is ideal with 34% rainy days and 27°C.
December is the wettest month with 15% rainy days.
Yes, June is the best month with an average of 27°C.
In winter, the average score is 5.0/10. Difficult period — prefer the peak season.
Also explore
Destinations with similar climate
Weather rankings
Compare destinations by weather
Guides & comparisons