Seoul Weather
Seoul weather today, the 14-day forecast, and average temperature, rain and what to wear for every month — compared against Hong Kong. Best months to visit: Apr, May, Jun and Oct.
Seoul current weather
Seoul now (local time 16:00)
23°C
Mostly clear
- Feels like
- 23°
- Humidity
- 51%
- Wind
- 6 km/h
Next 7 days · what to wear
11° – 26°C
Rain likely on 2 of 7 days
👕 Short sleeves with a light long-sleeve or jacket for cool mornings and evenings; big day–night swing, so dress in layers.
Seoul 14-day forecast
Today
10/4
🌦️
23°
14°
💧82%
Mon
10/5
🌦️
19°
14°
💧92%
Tue
10/6
☀️
20°
11°
💧0%
Wed
10/7
☀️
22°
12°
💧0%
Thu
10/8
☀️
24°
12°
💧0%
Fri
10/9
☁️
26°
13°
💧0%
Sat
10/10
⛅
26°
14°
💧0%
Sun
10/11
☀️
26°
16°
💧2%
Mon
10/12
🌤️
26°
17°
💧13%
Tue
10/13
🌤️
28°
17°
💧27%
Wed
10/14
🌧️
20°
19°
💧10%
Thu
10/15
🌦️
22°
18°
💧6%
Fri
10/16
☁️
21°
12°
💧6%
Sat
10/17
☁️
20°
10°
💧13%
Best time to visit Seoul
On temperature and rainfall, the most comfortable months in Seoul are Apr, May, Jun and Oct. The hottest month is August (average high 29°C) and the coldest is January (average low -7°C).
Seoul climate by month
| Month | Avg high | Avg low | Rain | Humidity | vs Hong Kong |
|---|---|---|---|---|---|
| Jan | 3°C | -7°C | 28 mm | 61% | -19°C |
| Feb | 6°C | -4°C | 28 mm | 66% | -17°C |
| Mar | 12°C | 1°C | 53 mm | 66% | -14°C |
| AprBest | 18°C | 7°C | 58 mm | 63% | -11°C |
| MayBest | 22°C | 12°C | 128 mm | 71% | -10°C |
| JunBest | 27°C | 18°C | 177 mm | 76% | -6°C |
| Jul | 29°C | 22°C | 324 mm | 84% | -4°C |
| Aug | 29°C | 23°C | 358 mm | 84% | -3°C |
| Sep | 26°C | 18°C | 199 mm | 79% | -7°C |
| OctBest | 19°C | 9°C | 75 mm | 75% | -12°C |
| Nov | 12°C | 2°C | 66 mm | 72% | -16°C |
| Dec | 3°C | -6°C | 22 mm | 63% | -20°C |
Data: Open-Meteo historical weather, 2020–2024 averages (ERA5); Hong Kong comparison uses HKO 1991–2020 normals.
Seoul weather month by month: what to wear
Seoul in OctoberBest monthThis month
October in Seoul is mild and cool: average highs of 19°C and lows of 9°C, around 75 mm of rain (mostly dry) and 75% humidity — about 12°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Long sleeves with a light jacket or sweater; big day–night swing, so dress in layers.
Seoul in November
November in Seoul is chilly: average highs of 12°C and lows of 2°C, around 66 mm of rain (mostly dry) and 72% humidity — about 16°C colder than Hong Kong.
👕 A sweater plus a coat or windbreaker; big day–night swing, so dress in layers.
Seoul in December
December in Seoul is freezing: average highs of 3°C and lows of -6°C, around 22 mm of rain (dry) and 63% humidity — about 20°C colder than Hong Kong.
👕 A down jacket, thermal base layers, scarf and gloves; snow is possible.
Seoul in January
January in Seoul is freezing: average highs of 3°C and lows of -7°C, around 28 mm of rain (dry) and 61% humidity — about 19°C colder than Hong Kong.
👕 A down jacket, thermal base layers, scarf and gloves; big day–night swing, so dress in layers; snow is possible.
Seoul in February
February in Seoul is cold: average highs of 6°C and lows of -4°C, around 28 mm of rain (dry) and 66% humidity — about 17°C colder than Hong Kong.
👕 A warm coat over a sweater, plus a scarf; big day–night swing, so dress in layers.
Seoul in March
March in Seoul is chilly: average highs of 12°C and lows of 1°C, around 53 mm of rain (mostly dry) and 66% humidity — about 14°C colder than Hong Kong.
👕 A sweater plus a coat or windbreaker; big day–night swing, so dress in layers.
Seoul in AprilBest month
April in Seoul is mild and cool: average highs of 18°C and lows of 7°C, around 58 mm of rain (mostly dry) and 63% humidity — about 11°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Long sleeves with a light jacket or sweater; big day–night swing, so dress in layers.
Seoul in MayBest month
May in Seoul is pleasantly warm: average highs of 22°C and lows of 12°C, around 128 mm of rain (some rain) and 71% humidity — about 10°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves with a light long-sleeve or jacket for cool mornings and evenings; big day–night swing, so dress in layers.
Seoul in JuneBest month
June in Seoul is warm to hot: average highs of 27°C and lows of 18°C, around 177 mm of rain (wet) and 76% humidity — about 6°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers; it's wet, so pack a compact umbrella.
Seoul in July
July in Seoul is warm to hot: average highs of 29°C and lows of 22°C, around 324 mm of rain (very wet) and 84% humidity — about 4°C colder than Hong Kong.
👕 Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.
Seoul in August
August in Seoul is warm to hot: average highs of 29°C and lows of 23°C, around 358 mm of rain (very wet) and 84% humidity — about 3°C colder than Hong Kong.
👕 Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.
Seoul in September
September in Seoul is pleasantly warm: average highs of 26°C and lows of 18°C, around 199 mm of rain (wet) and 79% humidity — about 7°C colder than Hong Kong.
👕 Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella.
FAQ
›What is the best time to visit Seoul?
On temperature and rainfall, the most comfortable months in Seoul are Apr, May, Jun and Oct. The hottest month is August (average high 29°C) and the coldest is January (average low -7°C).
›What's the weather like in Seoul in October, and what should I wear?
October in Seoul is mild and cool: average highs of 19°C and lows of 9°C, around 75 mm of rain (mostly dry) and 75% humidity — about 12°C colder than Hong Kong. It's one of the most comfortable months of the year to visit. What to wear: Long sleeves with a light jacket or sweater; big day–night swing, so dress in layers.
›What's the weather like in Seoul in November, and what should I wear?
November in Seoul is chilly: average highs of 12°C and lows of 2°C, around 66 mm of rain (mostly dry) and 72% humidity — about 16°C colder than Hong Kong. What to wear: A sweater plus a coat or windbreaker; big day–night swing, so dress in layers.
›When is the rainy season in Seoul?
Seoul is wettest in August, with about 358 mm on average, and driest in December, with about 22 mm.
›How cold does Seoul get? Does it snow?
The coldest month is January, averaging 3°C by day and -7°C at night. Nights regularly drop below freezing and snow is possible.
Planning a trip to Seoul?
More South Korea weather
Popular destinations in October
Forecast data: Open-Meteo.com (CC BY 4.0), refreshed every 3 hours. Hottest month: August; coldest: January.