Temperature
Cold by day, freezing at night.
Cold weather is the main limitation.
Cold by day, freezing at night.
Some precipitation is expected this month.
Good sunshine this month.
Humidity is rarely noticeable in the cool air.
In January, afternoons feel about 25° and nights feel near 15°.
Partly cloudy skies this month.
Calm winds are typical in January.
January late afternoons are around 34°F, easing to about 29°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 35 | 21 | 0.7 | 4 | 7.9 | 64 |
| Feb | 40 | 25 | 0.9 | 4 | 8.7 | 64 |
| Mar | 50 | 35 | 1.4 | 5 | 9.5 | 66 |
| Apr | 61 | 46 | 2.6 | 7 | 10.0 | 67 |
| May | 71 | 56 | 3.7 | 8 | 10.0 | 72 |
| Jun | 78 | 66 | 5.1 | 9 | 9.9 | 77 |
| Jul | 82 | 73 | 11.8 | 16 | 8.0 | 84 |
| Aug | 85 | 74 | 9.5 | 15 | 9.0 | 82 |
| Sep | 79 | 65 | 4.8 | 8 | 8.9 | 76 |
| Oct | 67 | 51 | 2.2 | 5 | 9.1 | 71 |
| Nov | 53 | 38 | 1.8 | 7 | 7.5 | 70 |
| Dec | 39 | 25 | 0.8 | 4 | 7.6 | 66 |
Similar climates
Want a side-by-side climate view? Compare Seoul with Tokyo.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology