Climate
Weather in South Korea, month by month
Best time to visit
For mild temperatures and less rain, May, June, September are usually the most comfortable months in South Korea (based on recent 2025 averages near Seoul).
Average weather by month
Daytime high / overnight low (Celsius and Fahrenheit), with average monthly rainfall, near Seoul. Tap a month for details.
| Jan | 1.8°C (35°F) / -7.1°C (19°F) · 20 mm |
|---|---|
| Feb | 4.8°C (41°F) / -4.7°C (24°F) · 19 mm |
| Mar | 12.1°C (54°F) / 1°C (34°F) · 55 mm |
| Apr | 18.3°C (65°F) / 7.5°C (46°F) · 74 mm |
| May | 22.1°C (72°F) / 12°C (54°F) · 127 mm |
| Jun | 27°C (81°F) / 18.3°C (65°F) · 168 mm |
| Jul | 29.9°C (86°F) / 23.1°C (74°F) · 308 mm |
| Aug | 29.4°C (85°F) / 22.7°C (73°F) · 298 mm |
| Sep | 26.1°C (79°F) / 18.4°C (65°F) · 204 mm |
| Oct | 18.7°C (66°F) / 10.1°C (50°F) · 105 mm |
| Nov | 11.6°C (53°F) / 2.1°C (36°F) · 55 mm |
| Dec | 2.8°C (37°F) / -5.6°C (22°F) · 30 mm |
Updated climate normals, 2025
Climate extremes in South Korea
| Warmest month | July · avg high 29.9°C (86°F) |
|---|---|
| Coolest month | January · avg low -7.1°C (19°F) |
| Wettest month | July · ~308 mm |
| Driest month | February · ~19 mm |
Common questions
When is the best time to visit South Korea?
For a balance of comfortable temperatures and lower rainfall, May, June, September tend to be the most pleasant months in South Korea.
What is the hottest month in South Korea?
July is the warmest month in South Korea, with average daytime highs around 29.9°C (86°F).
What is the coldest month in South Korea?
January is the coolest, with average overnight lows near -7.1°C (19°F).
Which month has the most rain in South Korea?
July is typically the wettest month (around 308 mm on average), while February is usually the driest.