VacationSage
The year at a glance
ExcellentGoodFairPoor Click a month to compare destinations.
The short answer
Go in May–June, September–October. The least comfortable stretch is November–March, July–August.
- Warmest month: August, average high 30°C (86°F).
- Coolest month: January, average high 2°C (36°F), lows near -6°C (20°F).
- Wettest month: July, about 345 mm (13.6 in) of rain.
- Driest month: January, about 17 mm (0.7 in).
Quick facts
- Currency
- Won
- Language
- Korean, Korean Sign Language
- Plugs
- Type C, Type F
- Drives on the
- right
- Calling code
- +82
- Airports
- Incheon International Airport (ICN)
Gimpo International Airport (GMP) - Population
- 9,668,465
Temperature and rain through the year
Average highAverage lowRain (mm, right axis)
Top sights in Seoul
- Changdeokgung palace in Seoul, South Korea
- Gyeongbokgung palace in Seoul, South Korea
- Jongmyo royal Confucian shrine in Seoul, South Korea
- Blue House former official residence of the president of South Korea
- National Library of Korea the national library of South Korea
- National Museum of Korea Museum located in Seoul, Republic of Korea
- Deoksugung palace
- Namsan Seoul Tower communications tower in Seoul, South Korea
Ranked by how widely each place is covered across Wikipedia's language editions, a rough measure of fame rather than a recommendation.
UNESCO World Heritage nearby
Travel advisories
United States
Level 1 Exercise Normal Precautions
Read the full advisory at travel.state.gov
Checked 2026-11-02.
United Kingdom
No FCDO warning against travel to any part of South Korea.
Latest change (2026-10-07): Updated information about submitting e-Arrivals cards when arriving in Korea (‘Entry requirements’ page).
Checked 2026-11-02.
Advisories are summarised from official sources and can change quickly; always read the source before you travel.
Month by month
| Month | Score | High | Low | Rain | Cloud | Dew point | Daylight |
|---|---|---|---|---|---|---|---|
| January | 0.0 Poor | 2°C 36°F | -6°C 20°F | 17 mm 0.7 in | 31% | -9°C15°F dry | 9.7 h |
| February | 0.0 Poor | 5°C 41°F | -4°C 24°F | 23 mm 0.9 in | 32% | -6°C22°F dry | 10.6 h |
| March | 3.0 Poor | 11°C 51°F | 1°C 33°F | 40 mm 1.6 in | 36% | -3°C27°F dry | 11.7 h |
| April | 6.9 Good | 18°C 64°F | 7°C 44°F | 69 mm 2.7 in | 36% | 4°C39°F dry | 13.0 h |
| May | 8.9 Excellent | 23°C 74°F | 13°C 55°F | 90 mm 3.5 in | 41% | 11°C52°F comfortable | 14.0 h |
| June | 8.1 Excellent | 27°C 81°F | 18°C 64°F | 122 mm 4.8 in | 46% | 17°C62°F sticky | 14.6 h |
| July | 4.1 Poor | 29°C 84°F | 22°C 71°F | 345 mm 13.6 in | 53% | 21°C70°F oppressive | 14.4 h |
| August | 3.9 Poor | 30°C 86°F | 22°C 72°F | 299 mm 11.8 in | 44% | 21°C70°F oppressive | 13.4 h |
| September | 8.2 Excellent | 26°C 79°F | 17°C 62°F | 127 mm 5.0 in | 38% | 16°C60°F comfortable | 12.2 h |
| October | 8.4 Excellent | 20°C 68°F | 9°C 49°F | 50 mm 2.0 in | 28% | 8°C47°F dry | 11.0 h |
| November | 3.6 Poor | 12°C 53°F | 2°C 36°F | 47 mm 1.8 in | 29% | 0°C32°F dry | 9.9 h |
| December | 0.0 Poor | 4°C 39°F | -5°C 24°F | 22 mm 0.9 in | 28% | -6°C22°F dry | 9.4 h |
Public holidays in the next 12 months
Holidays can mean closures, festivals and busier transport. National public holidays for South Korea; school holidays are not included.
- December 2026
- 기독탄신일
- January 2027
- 신정연휴
- February 2027
- 설날 전날
- 설날
- 설날 다음날
- 설날 대체 휴일
- March 2027
- 삼일절
- 대통령 선거일
- May 2027
- 어린이날
- 부처님오신날
- June 2027
- 현충일
- August 2027
- 광복절
- 광복절 대체 휴일
- September 2027
- 추석 전날
- 추석
- 추석 다음날
- October 2027
- 개천절
- 개천절 대체 휴일
- 한글날
- 한글날 대체 휴일
More in Asia & Pacific
Temperature, rain and dew point are 1991–2020 averages from a ~4 km climate grid; cloud cover is a 1981–2010 average. Recent years run warmer in most places, and a single trip can differ a lot. How this is calculated.