World → South Korea → Incheon

Weather in Incheon — today

Tomorrow Day after tomorrow 3 days Week 14 days Month forecast Weather archive

Now in Incheon

☁️

+24°

Overcast

Feels like +26° · humidity 66%

Today 12.9: +24° / +16°

🕐 16:25

Wind

4 km/h

UV index

Air (AQI)

69 · Poor

Precipitation

Humidity

66%

Pressure

1020 hPa

Sunrise / sunset

06:12 / 18:46

Sea temperature

🌊 +26°

👕 What to wear today

Warm — a T-shirt and light trousers or shorts.

Feels warmer by 2°

Weather for an activity:

🎣 fishing 🏖️ the beach 🏃 a run 📸 a photo shoot 🚶 a walk

Detailed weather information for Incheon

Today, 12 September, Saturday, in Incheon (South Korea): partly cloudy, warm. During the day the air will warm up to +24°, at night around +16°. Wind up to 10 km/h. No precipitation expected, you won't need an umbrella. Light summer clothing will do — a T-shirt and shorts or light trousers. The sea has warmed up to +26° — great for swimming. The sun will rise at 06:12 and set at 18:46 — daylight lasts 13 hours.

Hourly weather in Incheon

💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).

Weather in Incheon for 14 days

Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).

▶

Today 12.9

☁️

+16° +24°

Morning

☁️

+19°

Day

☁️

+24°

Evening

🌇

+22°

Night

🌙

+16°

Overcast · precipitation 0% · wind up to 10 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tomorrow 13.9

🌦️

💧 12%

+18° +23°

Morning

⛅

+18°

Day

🌦️

+23°

Evening

🌇

+22°

Night

🌙

+18°

Drizzle · precipitation 12% · wind up to 10 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Mon 14.9

☁️

+18° +23°

Morning

☁️

+20°

Day

☁️

+23°

Evening

🌇

+22°

Night

🌙

+18°

Overcast · precipitation 0% · wind up to 13 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Tue 15.9

⛅

💧 2%

+14° +26°

Morning

⛅

+18°

Day

⛅

+26°

Evening

🌇

+23°

Night

🌙

+14°

Partly cloudy · precipitation 2% · wind up to 13 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Wed 16.9

☀️

+15° +28°

Morning

☀️

+20°

Day

☀️

+28°

Evening

🌇

+25°

Night

🌙

+15°

Clear · precipitation 0% · wind up to 8 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Thu 17.9

☁️

💧 2%

+18° +28°

Morning

☁️

+22°

Day

☁️

+28°

Evening

🌇

+26°

Night

🌙

+18°

Overcast · precipitation 2% · wind up to 16 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Fri 18.9

☁️

💧 4%

+19° +29°

Morning

☁️

+23°

Day

☁️

+29°

Evening

🌇

+27°

Night

🌙

+19°

Overcast · precipitation 4% · wind up to 15 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Sat 19.9

🌤️

💧 2%

+20° +29°

Morning

🌤️

+23°

Day

🌤️

+29°

Evening

🌇

+27°

Night

🌙

+20°

Mostly clear · precipitation 2% · wind up to 14 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Sun 20.9

☀️

💧 5%

+18° +30°

Morning

☀️

+22°

Day

☀️

+30°

Evening

🌇

+27°

Night

🌙

+18°

Clear · precipitation 5% · wind up to 13 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Mon 21.9

🌦️

💧 17%

+20° +31°

Morning

🌦️

+24°

Day

🌦️

+31°

Evening

🌇

+28°

Night

🌙

+20°

Drizzle · precipitation 17% · wind up to 14 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tue 22.9

🌦️

💧 17%

+19° +23°

Morning

🌦️

+20°

Day

🌦️

+23°

Evening

🌇

+22°

Night

🌙

+19°

Rain showers · precipitation 17% · wind up to 17 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Wed 23.9

🌦️

💧 10%

+18° +25°

Morning

🌦️

+21°

Day

🌦️

+25°

Evening

🌇

+23°

Night

🌙

+18°

Rain showers · precipitation 10% · wind up to 24 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Thu 24.9

☁️

💧 6%

+15° +25°

Morning

☁️

+19°

Day

☁️

+25°

Evening

🌇

+23°

Night

🌙

+15°

Overcast · precipitation 6% · wind up to 10 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Fri 25.9

☁️

💧 8%

+17° +24°

Morning

☁️

+20°

Day

☁️

+24°

Evening

🌇

+22°

Night

🌙

+17°

Overcast · precipitation 8% · wind up to 8 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

🗺️ Precipitation radar

Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.

Rain intensity:lightmoderateheavy

🎯 What to do in this weather — indices of the day

Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.

🏖️ Beach

75 / 100

for sea and sun · Good

🏊 Swimming

100 / 100

water 26° · Excellent

🏃 Running

80 / 100

comfort for running · Excellent

🧴 UV

18%

moderate · low

☂️ Rain

unlikely · low

✨ Stars

88 / 100

evening visibility · Excellent

🧺 Laundry drying

70 / 100

will dry outside · Good

🚗 Car wash

95 / 100

no rain expected · Excellent

🌫️ Air quality

Poor air

European AQI

PM2.5: 33PM10: 38O₃: 45NO₂: 77

People with allergies or asthma should reduce time outdoors.

🌅 Sun, moon and sea

Sunrise

06:12

Sunset

18:46

Golden hour

18:12

Daylight

13 h (-2 min vs yesterday)

Sea temperature

+26°

🌊 calm, waves 0 m.

Incheon climate by month

Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.

+1°

-6°

Jan

+4°

-4°

Feb

+9°

+0°

Mar

+14°

+6°

Apr

+20°

+12°

May

+24°

+17°

Jun

+26°

+21°

Jul

+28°

+23°

Aug

+24°

+18°

Sep

+18°

+11°

Oct

+11°

+3°

Nov

+4°

-3°

Dec

swipe sideways →

Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit

Month	Day	Night	Sea	Precipitation	What to pack and what makes the month notable (events, nuances)
January	+1°	-6°	+3°	18 mm	Freezing: +1° by day, -6° at night — full winter gear, ice underfoot is common. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+3°) — swimming is for the brave. This is the coldest month of the year.
February	+4°	-4°	+2°	25 mm	Winter weather: about +4° daytime, you need a warm coat and hat. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+2°) — swimming is for the brave.
March	+9°	+0°	+6°	35 mm	A cold month: +9° by day, long walks get uncomfortable. 🧥 a warm jacket. The water is cold (+6°) — swimming is for the brave.
April	+14°	+6°	+12°	64 mm	Cool: around +14° by day, you'll need a warm layer. It's a rainy month (64 mm) — an umbrella is a must. 🧥 a warm jacket. The water is cold (+12°) — swimming is for the brave.
May	+20°	+12°	+17°	92 mm	Ideal weather: +20° daytime — neither hot nor cold. Frequent rain (92 mm over the month) — keep indoor backup plans. 🙂 a sweater for the evening. The water is cold (+17°) — swimming is for the brave.
June	+24°	+17°	+23°	122 mm	The most pleasant season: +24° by day, comfortable all day long. One of the wettest months (122 mm): downpours can derail plans. 🙂 a sweater for the evening. Water at +23° — great for swimming. The longest daylight hours of the year — more time for everything.
July	+26°	+21°	+28°	302 mm	Warm and comfortable: +26° by day, +21° at night. It's a rainy month (302 mm) — an umbrella is a must. 😊 light summer clothing. Water at +28° — great for swimming. Statistically the wettest month of the year.
August	+28°	+23°	+30°	248 mm	Gentle warmth — about +28° daytime, great walking weather. Frequent rain (248 mm over the month) — keep indoor backup plans. 😊 light summer clothing. The sea is +30° — like a warm bath. This is the hottest month of the year in Incheon.
September	+24°	+18°	+27°	120 mm	The most pleasant season: +24° by day, comfortable all day long. One of the wettest months (120 mm): downpours can derail plans. 😊 light summer clothing. Water at +27° — great for swimming. Weather-wise, one of the three best months to visit.
October	+18°	+11°	+21°	54 mm	One of the best times to visit: +18° by day, fresh nights. 🙂 a sweater for the evening. Sea at +21° — swimmable, refreshing. Weather-wise, one of the three best months to visit.
November	+11°	+3°	+15°	48 mm	A fresh month — +11° daytime, take a jacket for walks. 🧥 a warm jacket. The water is cold (+15°) — swimming is for the brave.
December	+4°	-3°	+8°	23 mm	A cold month: +4° by day, long walks get uncomfortable. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+8°) — swimming is for the brave. The shortest daylight of the year — it gets dark early.

When to visit Incheon

✅ Recommended time to visit

🌟 Best time: June, September, October

Daytime air+18…+24°

Sea temperature+21…+27°

Precipitationoften

Why: comfortable +18…+24° by day, little rain.

⚠️ Doable, with caveats

🌤️ Shoulder season: January, February, March, April, May, July

Daytime air+1…+26°

Sea temperature+2…+28°

Precipitationoften

Why: noticeable rain risk (18–302 mm/month) — pack an umbrella and backup plans.

🔴 Not the best time

❄️ Cold season: August, November, December

Daytime air+4…+28°

Sea temperature+8…+30°

Precipitationoften

Why: cold and dark (+4…+28° by day, 10 h of daylight) — only if frost and short days don’t put you off.

Bottom line: the best time to visit Incheon is June, September, October, and the most comfortable months are June, September, October. The toughest months to visit are August, November, December: frequent rain.