Winter (December to February)
Sharp cold with highs around 3° and lows near -6°, almost always dry (4 rainy days per month on average). Not an ideal time for a leisure trip.
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Climate · 10-year averages
When to visit Séoul?
Best time to visit Séoul: from April to Juneandfrom September to October. Month-by-month temperatures, rainfall and sunshine, based on ten years of weather data.
Best time to go
From April to Juneandfrom September to October
Hottest month
July · 29°
Coldest month
January · -7°
Wettest month
July · 270 mm
Climate month by month
Bars: monthly rainfall. Lines: average highs and lows. Month color: our travel comfort index.
- JanuaryÀ éviter
2° / -7°
- Rain
- 17 mm · 3 d
- Sunshine
- 7.8 h/day
- Humidity
- 58%
- FebruaryÀ éviter
5° / -5°
- Rain
- 22 mm · 3 d
- Sunshine
- 8.6 h/day
- Humidity
- 60%
- MarchCorrect
12° / -0°
- Rain
- 37 mm · 6 d
- Sunshine
- 9.2 h/day
- Humidity
- 66%
- AprilIdéal
18° / 6°
- Rain
- 64 mm · 7 d
- Sunshine
- 9.5 h/day
- Humidity
- 64%
- MayIdéal
23° / 12°
- Rain
- 99 mm · 8 d
- Sunshine
- 10.2 h/day
- Humidity
- 68%
- JuneIdéal
27° / 17°
- Rain
- 115 mm · 10 d
- Sunshine
- 9.8 h/day
- Humidity
- 73%
- JulyMitigé
29° / 22°
- Rain
- 270 mm · 17 d
- Sunshine
- 8.5 h/day
- Humidity
- 81%
- AugustMitigé
29° / 22°
- Rain
- 267 mm · 16 d
- Sunshine
- 8.8 h/day
- Humidity
- 82%
- SeptemberIdéal
25° / 17°
- Rain
- 118 mm · 8 d
- Sunshine
- 8.6 h/day
- Humidity
- 77%
- OctoberIdéal
19° / 9°
- Rain
- 75 mm · 6 d
- Sunshine
- 8.5 h/day
- Humidity
- 73%
- NovemberMitigé
11° / 2°
- Rain
- 58 mm · 7 d
- Sunshine
- 7.2 h/day
- Humidity
- 71%
- DecemberÀ éviter
3° / -6°
- Rain
- 28 mm · 5 d
- Sunshine
- 7.2 h/day
- Humidity
- 62%
2014–2023 averages from the ERA5 reanalysis (Copernicus) via Open-Meteo. A day counts as a “rainy day” from 1 mm of rain.
Our take, season by season
Spring (March to May)
Mild weather with highs around 17° and lows near 6°, a few showers (7 rainy days per month on average). It's a great time to go.
Summer (June to August)
Pleasant warmth with highs around 28° and lows near 20°, regular rain (14 rainy days per month on average). A decent time to go, as long as you're willing to make a few compromises.
Fall (September to November)
Mild weather with highs around 18° and lows near 9°, a few showers (7 rainy days per month on average). It's a great time to go.
Frequently asked questions
- When is the best time to visit Séoul?
- The best time to visit Séoul is from April to Juneandfrom September to October, with highs between 18° and 27° and few rainy days.
- What is the hottest month in Séoul?
- July is the hottest month, with an average high of 29 °C.
- What is the coldest month in Séoul?
- January is the coldest month, with an average low of -7 °C.
- When does it rain the most in Séoul?
- July is the wettest month (270 mm, about 17 rainy days). The driest is January (17 mm).
- When should you avoid Séoul?
- The least favorable months are from December to February: too hot, too cold, or too rainy to make the most of your trip.
More practical info: South Korea
- Country guideEverything about a country on one page: time, weather, currency, plugs, emergency numbers, tipping, visas.
- WeatherTemperature, rain, wind, and UV index for every capital.
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- Local timeLive clock, time zone, and time difference from where you are.
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- Emergency NumbersPolice, ambulance, and fire department numbers for every country.
- TippingHow much to tip at restaurants, in taxis, and at hotels.
- Dialing CodesHow to call a country from abroad.
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- Visa requirements from FranceDo you need a visa for South Korea?