The best time to visit Seoul is May and September–October. The rainiest month is July (13 rainy days), the hottest is August (high 30°C (86°F)) and the coldest is January (high 2°C (36°F)).
Red: daytime high · Blue: night low · Bars: rainy days per month (°C)
| Month | High °C | Low °C | Rainy days | Rain mm | Trip |
|---|---|---|---|---|---|
| Jan | 2° | -6° | 3 | 19 | Good |
| Feb | 5° | -3° | 3 | 26 | Good |
| Mar | 12° | 2° | 5 | 40 | Good |
| Apr | 18° | 8° | 7 | 75 | Great |
| May | 24° | 14° | 7 | 104 | Great |
| Jun | 28° | 19° | 8 | 142 | Great |
| Jul | 29° | 23° | 13 | 414 | Good |
| Aug | 30° | 23° | 12 | 335 | Good |
| Sep | 27° | 18° | 7 | 157 | Great |
| Oct | 20° | 11° | 5 | 57 | Great |
| Nov | 12° | 4° | 6 | 52 | Good |
| Dec | 4° | -4° | 4 | 23 | Good |
Highlighted rows are the best months. Rainy day = 1 mm or more of rain.
Pick your arrival and departure dates. We look up the same dates over the last 30 years.
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| Time zone | Korea Standard Time (UTC+9), no daylight saving |
|---|---|
| Power | 220V, 60Hz, Type C/F (round two-pin) sockets |
| Money | Korean won (KRW). Cards are accepted almost everywhere |
| Entry | Visa and K-ETA rules change — check the official K-ETA site and your government's travel advice |
Observed at Korea Meteorological Administration (KMA) station 108, 1996–2025 daily records. How we calculate