Weather in South Korea - today, tomorrow and 14-day forecast

Right now temperatures across South Korea range from 22° to 28°. Below: today's conditions city by city, a live weather map, the 14-day outlook and month-by-month climate to help you pick the best time to travel.

Country values are the median of forecasts from 10 cities; the range shows local differences. Methodology.

Weather in South Korea's cities today

☀️Busan 28°💧 0.1 mm 🌧️Changwon 28°💧 0.1 mm 🌧️Ulsan 27°💧 0.7 mm 🌤️Daegu 27°💧 0.1 mm 🌤️Seoul 26°💧 10.1 mm 🌤️Anyang 26°💧 10.3 mm ☀️Incheon 26°💧 10.2 mm 🌤️Seogwipo 26°💧 2.5 mm 🌧️Pohang 25°💧 0.9 mm 🌧️Gangneung 22°💧 1.6 mm

Weather map - today's temperatures

Pill colour shows today's daytime temperature. Click a city for its full 14-day forecast.

Next days in South Korea

today🌤️ 26°💧 1.3 mm

Sun🌧️ 26°💧 1.4 mm

Mon☀️ 27°💧 0.6 mm

Tue☀️ 27°💧 0.7 mm

Wed🌧️ 21°💧 0.7 mm

Thu🌤️ 24°💧 0.4 mm

Fri🌤️ 25°💧 43.4 mm

Sat☀️ 27°💧 73 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Wednesday 9 Sept in South Korea, the forecast high is 21°C. Typical daytime temperatures at this time of year range from 24°C to 26°C, so it will be exceptionally cool. It is cooler than 97% of similar days.

Saturday 5 Sept

26°Cnear normal

usually 24°C–27°C

night: warmer than usual rain: typical rainfall wind: stronger than usual

Sunday 6 Sept

26°Cwarmer than usual

usually 24°C–27°C

warmer than 74% of similar days

night: exceptionally warm rain: typical rainfall wind: stronger than usual

Monday 7 Sept

27°Cwarmer than usual

usually 24°C–27°C

warmer than 80% of similar days

night: warmer than usual rain: typical rainfall wind: typical

Tuesday 8 Sept

27°Cwarmer than usual

usually 24°C–26°C

warmer than 87% of similar days

night: exceptionally warm rain: typical rainfall wind: lighter than usual

Wednesday 9 Sept

21°Cexceptionally cool

usually 24°C–26°C

cooler than 97% of similar days

night: near normal rain: typical rainfall wind: stronger than usual

Thursday 10 Sept

24°Ccooler than usual

usually 24°C–26°C

cooler than 72% of similar days

night: exceptionally warm rain: typical rainfall wind: typical

Friday 11 Sept

25°Cnear normal

usually 23°C–26°C

night: warmer than usual rain: exceptionally wet wind: lighter than usual

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 25°C by day. The coolest year was 2006 (23°C) and the warmest was 2024 (30°C). The current forecast averages 25°C - close to the historical median.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

Weather warnings - South Korea

Strong wind5 bulletins · in effect until Tuesday

Areas incl.: Yeosu, Geomundo and Chodo, WandoYeoseodo, South Goheung, Wando(except Yeoseodo), North Goheung

Wind gusts can break branches and make driving harder. Watch for falling objects and stay away from trees.

Source: national weather service via the WMO Severe Weather Information Centre, as of 2026-09-05 11:08:09 UTC. 5 active bulletins in total. See alerts worldwide →

14-day forecast - South Korea

South Korea - 14-day weather forecast infographic

South Korea 30 & 45-day weather - long-range outlook

Next 16 days · forecast

26°

around 22° at night · days with rain: 10

Weeks 3-4 · avg for September

25°

around 19° at night · rain chance 37%

Weeks 5-7 · avg for October

20°

around 14° at night · rain chance 26%

The 30 & 45-day outlook for South Korea: the next 16 days are a numerical forecast updated daily - on average 26° by day and 22° at night. Further out we rely on multi-year climate averages: around 25° in September, and about 20° in October. Forecasts beyond two weeks are indicative only.

Today vs the next days - South Korea cities

City	Today	+3 days	+7 days	Rain today
☀️ Busan	28℃	28℃	27℃	0.1 mm
🌧️ Changwon	28℃	27℃	27℃	0.1 mm
🌧️ Ulsan	27℃	27℃	26℃	0.7 mm
🌤️ Daegu	27℃	27℃	27℃	0.1 mm
🌤️ Seoul	26℃	27℃	28℃	10.1 mm
🌤️ Anyang	26℃	27℃	28℃	10.3 mm
☀️ Incheon	26℃	26℃	27℃	10.2 mm
🌤️ Seogwipo	26℃	27℃	26℃	2.5 mm
🌧️ Pohang	25℃	25℃	25℃	0.9 mm
🌧️ Gangneung	22℃	25℃	24℃	1.6 mm

Day-by-day forecast for South Korea

Saturday5 September 2026

🌤️26°scattered clouds

night 23° · evening 25° · rain 1.26 mm · humidity 54% · wind 7 m/s · clouds 23.5%

Sunday6 September 2026

🌧️26°light rain

night 23° · evening 25° · rain 1.4 mm · humidity 58.5% · wind 7 m/s · clouds 72.5%

Monday7 September 2026

☀️27°clear sky

night 21° · evening 24° · rain 0.585 mm · humidity 53% · wind 6 m/s · clouds 32.5%

Tuesday8 September 2026

☀️27°clear sky

night 23° · evening 25° · rain 0.69 mm · humidity 50.5% · wind 4 m/s · clouds 38%

Wednesday9 September 2026

🌧️21°light rain

night 20° · evening 21° · rain 0.65 mm · humidity 64% · wind 7 m/s · clouds 99%

Thursday10 September 2026

🌤️24°scattered clouds

night 22° · evening 23° · rain 0.405 mm · humidity 45% · wind 6 m/s · clouds 34.5%

Friday11 September 2026

🌤️25°scattered clouds

night 21° · evening 24° · rain 43.35 mm · humidity 53.5% · wind 4 m/s · clouds 77.5%

Saturday12 September 2026

☀️27°clear sky

night 22° · evening 24° · rain 72.99 mm · humidity 46.5% · wind 4 m/s · clouds 54.5%

Sunday13 September 2026

🌤️27°scattered clouds

night 24° · evening 25° · rain 17.565 mm · humidity 50% · wind 3 m/s · clouds 85%

Monday14 September 2026

☁️27°broken clouds

night 22° · evening 24° · rain 21.42 mm · humidity 50.5% · wind 3 m/s · clouds 92%

Tuesday15 September 2026

☁️26°broken clouds

night 23° · evening 24° · rain 1.305 mm · humidity 60% · wind 3 m/s · clouds 81%

Wednesday16 September 2026

🌧️26°light rain

night 22° · evening 25° · rain 2.85 mm · humidity 62% · wind 3 m/s · clouds 100%

Thursday17 September 2026

🌤️28°a few clouds

night 22° · evening 25° · rain 10.23 mm · humidity 52% · wind 3 m/s · clouds 64.5%

Friday18 September 2026

☁️27°overcast clouds

night 23° · evening 25° · rain 0.39 mm · humidity 53% · wind 4 m/s · clouds 87%

Saturday19 September 2026

🌤️28°scattered clouds

night 24° · evening 25° · rain 0.6 mm · humidity 46.5% · wind 3 m/s · clouds 68.5%

Sunday20 September 2026

🌧️20°very heavy rain

night 20° · evening 20° · rain 17.82 mm · humidity 91% · wind 3 m/s · clouds 100%

Sea temperature - South Korea

Beach	Water today	Water week avg	Waves	How's the water?
Seogwipo	29℃	28℃	2.3 m	very warm
Changwon	28℃	27℃	0.4 m	very warm
Busan	27℃	26℃	1.2 m	very warm
Incheon	27℃	26℃	0.3 m	very warm
Seoul	27℃	26℃	-	very warm
Anyang	27℃	26℃	-	very warm
Ulsan	27℃	26℃	1.9 m	warm
Gangneung	25℃	24℃	1 m	warm
Pohang	25℃	25℃	1.8 m	warm

Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Air quality and smog in South Korea

City	PM2.5 (µg/m³)	PM10 (µg/m³)	Air quality
Ansan-si	9.7	12.8	very good
Seul	9.5	12.5	very good
Inch'ŏn	9.5	12.5	very good
Pohang	7.1	11	very good
Cheongju-si	6.7	9.8	very good
Taegu	6.4	9.5	very good
Taejŏn	5.6	8.2	very good

Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-05, 10:00).

South Korea weather through the year

South Korea weather month by month - when is the best time to go?

January (4°)February (6°)March (12°)April (18°)May (24°)June (26°)July (29°)August (30°)September (25°)October (20°)November (13°)December (6°)

Weather in other countries in Asia

Sri LankaSingaporeSyriaPhilippinesTaiwanPalestine

Public holidays in South Korea - when are the long weekends?

Next long weekend in South Korea: Chuseok (24 September, Thursday) - Thursday–Sunday if you take Friday off (4 days).

2026

24 SeptemberThursday

Chuseok

long weekend + bridge day

25 SeptemberFriday

Chuseok

long weekend

26 SeptemberSaturday

Chuseok

falls on a weekend

5 OctoberMonday

National Foundation Day

long weekend

9 OctoberFriday

Hangul Day

long weekend

25 DecemberFriday

Christmas Day

long weekend

2027

1 JanuaryFriday

New Year's Day

long weekend

6 FebruarySaturday

Lunar New Year

falls on a weekend

8 FebruaryMonday

Lunar New Year

long weekend

9 FebruaryTuesday

Lunar New Year

long weekend + bridge day

1 MarchMonday

Independence Movement Day

long weekend

3 MayMonday

Labour Day

long weekend

Public holidays (statutory days off) - shops, offices and some attractions may be closed. A "bridge day" is a workday between a holiday and the weekend worth taking as leave. Lunar holiday dates marked as tentative may shift by one day after the official announcement.

Calendar sources

Nager.Date public holiday database

FAQ - South Korea weather

What is the weather like in South Korea today?

Today it is about 26° during the day and 23° at night, scattered clouds.

How far ahead can I check the forecast for South Korea?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.