Best time to visit Seoul
The best time to visit Seoul, South Korea is April–May & October — expect daytime highs near 18°C and roughly 6.3 rainy days a month. The most challenging month is typically January.
Travel score by month (0–10)
Seoul climate, month by month
Averages computed from ERA5 reanalysis data, 2019–2024. Daylight on the 15th: 13 h in April.
| Month | High | Low | Rain days | Rainfall | Sun/day | Humidity | Score |
|---|---|---|---|---|---|---|---|
| January | 3°C | -6°C | 3.7 | 23 mm | 7.7 h | 60% | 1.8 · Challenging |
| February | 6°C | -4°C | 4.8 | 27 mm | 8.1 h | 64% | 3.3 · Poor |
| March | 12°C | 0°C | 6.5 | 48 mm | 8.9 h | 66% | 6.6 · Fair |
| April | 18°C | 6°C | 6.3 | 55 mm | 9.1 h | 64% | 9.8 · Excellent |
| May | 23°C | 12°C | 8.5 | 113 mm | 9.7 h | 69% | 9.6 · Excellent |
| June | 27°C | 18°C | 11.3 | 157 mm | 9.3 h | 75% | 8.9 · Excellent |
| July | 29°C | 22°C | 19 | 300 mm | 8.2 h | 82% | 5.2 · Fair |
| August | 29°C | 23°C | 18.2 | 324 mm | 8.9 h | 83% | 5.1 · Fair |
| September | 26°C | 18°C | 11 | 190 mm | 8.2 h | 79% | 8.8 · Excellent |
| October | 19°C | 9°C | 6.5 | 77 mm | 8.2 h | 75% | 9.8 · Excellent |
| November | 12°C | 2°C | 6.5 | 68 mm | 7.5 h | 72% | 6.2 · Fair |
| December | 3°C | -5°C | 4 | 22 mm | 7.2 h | 63% | 2.0 · Challenging |
January
1.8 · Challenging
3°C / -6°C
💧 3.7 rain days · ☀️ 7.7 h sun · 🌡 feels 60% RH
February
3.3 · Poor
6°C / -4°C
💧 4.8 rain days · ☀️ 8.1 h sun · 🌡 feels 64% RH
March
6.6 · Fair
12°C / 0°C
💧 6.5 rain days · ☀️ 8.9 h sun · 🌡 feels 66% RH
April
9.8 · Excellent
18°C / 6°C
💧 6.3 rain days · ☀️ 9.1 h sun · 🌡 feels 64% RH
May
9.6 · Excellent
23°C / 12°C
💧 8.5 rain days · ☀️ 9.7 h sun · 🌡 feels 69% RH
June
8.9 · Excellent
27°C / 18°C
💧 11.3 rain days · ☀️ 9.3 h sun · 🌡 feels 75% RH
July
5.2 · Fair
29°C / 22°C
💧 19 rain days · ☀️ 8.2 h sun · 🌡 feels 82% RH
August
5.1 · Fair
29°C / 23°C
💧 18.2 rain days · ☀️ 8.9 h sun · 🌡 feels 83% RH
September
8.8 · Excellent
26°C / 18°C
💧 11 rain days · ☀️ 8.2 h sun · 🌡 feels 79% RH
October
9.8 · Excellent
19°C / 9°C
💧 6.5 rain days · ☀️ 8.2 h sun · 🌡 feels 75% RH
November
6.2 · Fair
12°C / 2°C
💧 6.5 rain days · ☀️ 7.5 h sun · 🌡 feels 72% RH
December
2.0 · Challenging
3°C / -5°C
💧 4 rain days · ☀️ 7.2 h sun · 🌡 feels 63% RH
Hottest month
August · 29°C
Coldest month
January · -6°C nights
Wettest month
August · 324 mm
Driest month
December · 22 mm
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