Best Time to Visit
🇰🇷 Seoul, South Korea · Asia
Based on 30-year climate data (1991-2020) from Open-Meteo
Jan
1°
-7°
Good
Feb
4°
-5°
Good
Mar
10°
0°
Good
Apr
17°
6°
Great
May
22°
12°
Great
Jun
26°
17°
Good
Jul
28°
22°
Good
Aug
29°
22°
Good
Sep
25°
16°
Great
Oct
19°
9°
Great
Nov
11°
2°
Good
Dec
3°
-5°
Good
| Month | High | Low | Rain Days | Sunshine | Humidity | UV | Rating | Details |
|---|---|---|---|---|---|---|---|---|
| January | 1°C | -7°C | 4 | 8h | 65% | 1 | Good | View |
| February | 4°C | -5°C | 4 | 9h | 65% | 1 | Good | View |
| March | 10°C | 0°C | 6 | 9h | 65% | 6 | Good | View |
| AprilRecommended | 17°C | 6°C | 7 | 10h | 65% | 6 | Great | View |
| MayRecommended | 22°C | 12°C | 8 | 10h | 65% | 9 | Great | View |
| June | 26°C | 17°C | 9 | 10h | 65% | 9 | Good | View |
| July | 28°C | 22°C | 17 | 8h | 65% | 9 | Good | View |
| August | 29°C | 22°C | 16 | 9h | 65% | 9 | Good | View |
| SeptemberRecommended | 25°C | 16°C | 8 | 9h | 65% | 6 | Great | View |
| OctoberRecommended | 19°C | 9°C | 5 | 9h | 65% | 6 | Great | View |
| November | 11°C | 2°C | 7 | 7h | 65% | 1 | Good | View |
| December | 3°C | -5°C | 5 | 8h | 65% | 1 | Good | View |
Data source: Open-Meteo ERA5 reanalysis archive, 30-year historical normals (1991-2020). Temperatures in Celsius. Sunshine hours are daily averages.
Avg: 16°C high, 6°C low
Mild conditions at 16°C (61°F), layers recommended. Occasional showers possible. Nights cool to 6°C (43°F).
Avg: 28°C high, 20°C low
Comfortable warmth at 28°C (82°F), ideal for outdoor activities. Rain is frequent, waterproof gear recommended. Nights cool to 20°C (68°F).
Avg: 18°C high, 9°C low
Mild conditions at 18°C (64°F), layers recommended. Occasional showers possible. Nights cool to 9°C (48°F).
Avg: 3°C high, -6°C low
Cool to cold at 3°C (37°F), warm clothing essential. Rainfall is low. Nights cool to -6°C (21°F).
The least favorable time to visit Seoul is August and January. During this period, you can expect heavy rainfall.
August
Challenges: heavy rainfall
January
Challenges: freezing temperatures
February
Challenges: freezing temperatures
Note: visiting during off-peak months often means lower prices, fewer crowds, and a more authentic experience.
Packing recommendations for visiting Seoul during the best travel months (October, April, May), when temperatures range from 9°C to 19°C:
Seoul has a continental climate (Koppen classification: Dwa). The warmest month is August with highs of 29°C, while the coldest month is January at just 1°C. Annual rainfall averages 1206mm across approximately 96 rain days.
| Metric | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 1 | 4 | 10 | 17 | 22 | 26 | 28 | 29 | 25 | 19 | 11 | 3 |
| Low °C | -7 | -5 | 0 | 6 | 12 | 17 | 22 | 22 | 16 | 9 | 2 | -5 |
| Rain Days | 4 | 4 | 6 | 7 | 8 | 9 | 17 | 16 | 8 | 5 | 7 | 5 |
| Rain mm | 19 | 27 | 37 | 70 | 95 | 134 | 315 | 263 | 123 | 54 | 46 | 23 |
| Sun h/day | 8 | 9 | 9 | 10 | 10 | 10 | 8 | 9 | 9 | 9 | 7 | 8 |
| Humidity % | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 |
| UV Index | 1 | 1 | 6 | 6 | 9 | 9 | 9 | 9 | 6 | 6 | 1 | 1 |
Considering alternatives to Seoul? Compare the best travel months for nearby cities:
For a complete day-by-day weather breakdown including packing lists, activities, and local events, explore each month individually:
January
February
March
April
May
June
July
August
September
October
November
December
Explore weather guides for other popular destinations: