Weather in Incheon - 14-day forecast

Detailed weather forecast for Incheon, South Korea: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Incheon

today🌧️ 23°💧 15.3 mm

Thu🌧️ 24°💧 25.8 mm

Fri🌧️ 25°💧 21 mm

Sat🌧️ 31°💧 0.5 mm

Sun🌧️ 33°💧 1.7 mm

Mon🌧️ 31°💧 0.1 mm

Tue☀️ 30°💧 0.2 mm

Wed☁️ 30°💧 12.8 mm

14-day forecast - Incheon

📅 Incheon 30 & 45-day weather - long-range outlook

Next 16 days · forecast

28°

around 26° at night · days with rain: 11

Weeks 3-4 · avg for July

28°

around 22° at night · rain chance 60%

Weeks 5-7 · avg for August

29°

around 23° at night · rain chance 38%

The 30 & 45-day outlook for Incheon: the next 16 days are a numerical forecast updated daily - on average 28° by day and 26° at night. Further out we rely on multi-year climate averages: around 28° in July, and about 29° in August. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Incheon

Wednesday8 July 2026

🌧️23°heavy rain

sunrise 05:19 · sunset 19:57 · night 24° · evening 25° · rain 15.34 mm · humidity 96% · wind 9 m/s · clouds 100%

Thursday9 July 2026

🌧️24°moderate rain

sunrise 05:20 · sunset 19:57 · night 23° · evening 23° · rain 25.8 mm · humidity 92% · wind 7 m/s · clouds 100%

Friday10 July 2026

🌧️25°moderate rain

sunrise 05:20 · sunset 19:56 · night 25° · evening 26° · rain 21.02 mm · humidity 90% · wind 3 m/s · clouds 100%

Saturday11 July 2026

🌧️31°light rain

sunrise 05:21 · sunset 19:56 · night 27° · evening 29° · rain 0.49 mm · humidity 60% · wind 3 m/s · clouds 100%

Sunday12 July 2026

🌧️33°light rain

sunrise 05:22 · sunset 19:56 · night 26° · evening 29° · rain 1.74 mm · humidity 52% · wind 4 m/s · clouds 14%

Monday13 July 2026

🌧️31°light rain

sunrise 05:22 · sunset 19:55 · night 27° · evening 28° · rain 0.12 mm · humidity 60% · wind 5 m/s · clouds 21%

Tuesday14 July 2026

☀️30°clear sky

sunrise 05:23 · sunset 19:55 · night 27° · evening 28° · rain 0.15 mm · humidity 61% · wind 5 m/s · clouds 4%

Wednesday15 July 2026

☁️30°broken clouds

sunrise 05:24 · sunset 19:54 · night 25° · evening 28° · rain 12.84 mm · humidity 57% · wind 6 m/s · clouds 84%

Thursday16 July 2026

☁️27°overcast clouds

sunrise 05:24 · sunset 19:54 · night 25° · evening 26° · rain 2.07 mm · humidity 71% · wind 4 m/s · clouds 100%

Friday17 July 2026

🌧️27°light rain

sunrise 05:25 · sunset 19:53 · night 26° · evening 28° · rain 4.2 mm · humidity 79% · wind 4 m/s · clouds 99%

Saturday18 July 2026

🌧️27°moderate rain

sunrise 05:26 · sunset 19:53 · night 26° · evening 27° · rain 12 mm · humidity 72% · wind 4 m/s · clouds 94%

Sunday19 July 2026

🌧️31°light rain

sunrise 05:26 · sunset 19:52 · night 27° · evening 29° · rain 2.4 mm · humidity 54% · wind 5 m/s · clouds 43%

Monday20 July 2026

☁️25°overcast clouds

sunrise 05:27 · sunset 19:51 · night 24° · evening 25° · rain 2.7 mm · humidity 67% · wind 4 m/s · clouds 100%

Tuesday21 July 2026

☁️28°overcast clouds

sunrise 05:28 · sunset 19:51 · night 27° · evening 27° · rain 0.36 mm · humidity 56% · wind 3 m/s · clouds 100%

Wednesday22 July 2026

🌤️28°a few clouds

sunrise 05:29 · sunset 19:50 · night 26° · evening 28° · rain 8.52 mm · humidity 59% · wind 4 m/s · clouds 24%

Thursday23 July 2026

🌧️29°light rain

sunrise 05:29 · sunset 19:49 · night 27° · evening 27° · rain 0.48 mm · humidity 50% · wind 4 m/s · clouds 98%

☀️ UV index in Incheon - is it safe to sunbathe?

Today the UV index in Incheon is 7 (high) - unprotected fair skin can burn in about 30 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

🌊 Sea temperature - Incheon

Water today

27°C

Week avg

28°C

Waves today

0.3 m

How's the water?

very warm

16-day sea temperature forecast:

8.07 27°C9.07 27°C10.07 28°C11.07 28°C12.07 29°C13.07 29°C14.07 29°C15.07 28°C16.07 28°C

Average sea temperature through the year:

Jan 3°CFeb 3°CMar 6°CApr 12°CMay 17°CJun 24°CJul 28°CAug 30°CSep 27°COct 21°CNov 15°CDec 8°C

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

Air quality and smog in Incheon

City	PM2.5 (µg/m³)	PM10 (µg/m³)	Air quality
Taejŏn	6.2	8.2	very good
Pohang	6.1	8.1	very good
Taegu	6	8.1	very good
Cheongju-si	5.5	6.7	very good
Seul	5	5.5	very good
Inch'ŏn	5	5.5	very good
Ansan-si	3.8	4.4	very good

Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-07-08, 10:00).

Incheon weather through the year

Warmest, driest months on average: April, May, June, July.

🎉 Public holidays in Incheon - when are the long weekends?

Next long weekend in Incheon: Constitution Day (17 July, Friday) - Friday–Sunday (3 days off).

17 JulyFriday

Constitution Day

🎈 long weekend

17 AugustMonday

Liberation Day

🎈 long weekend

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

1 JanuaryFriday 2027

New Year's Day

🎈 long weekend

6 FebruarySaturday 2027

Lunar New Year

falls on a weekend

8 FebruaryMonday 2027

Lunar New Year

🎈 long weekend

9 FebruaryTuesday 2027

Lunar New Year

🎈 long weekend + bridge day

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.

Nearby places

AnyangSeoul

FAQ - Incheon weather

What is the weather like in Incheon today?

Today it is about 23° during the day and 24° at night, heavy rain.

How far ahead can I check the forecast for Incheon?

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.