World → South Korea → Jeju City

Weather in Jeju City — today

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

Now in Jeju City

🌤️

+25°

Mostly clear

Feels like +27° · humidity 78%

Today 12.9: +27° / +21°

🕐 16:25

Wind

18 km/h

UV index

Air (AQI)

71 · Poor

Precipitation

Humidity

78%

Pressure

1019 hPa

Sunrise / sunset

06:15 / 18:45

Sea temperature

🌊 +27°

👕 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 Jeju City

Today, 12 September, Saturday, in Jeju City (South Korea): partly cloudy, warm. During the day the air will warm up to +27°, at night around +21°. Wind up to 21 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 +27° — great for swimming. The sun will rise at 06:15 and set at 18:45 — daylight lasts 13 hours.

Hourly weather in Jeju City

💧 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 Jeju City 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

⛅

+21° +27°

Morning

⛅

+23°

Day

⛅

+27°

Evening

🌇

+26°

Night

🌙

+21°

Partly cloudy · precipitation 0% · wind up to 21 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tomorrow 13.9

🌤️

💧 47%

+22° +27°

Morning

☀️

+24°

Day

🌤️

+27°

Evening

🌇

+25°

Night

🌙

+22°

Mostly clear · precipitation 47% · wind up to 14 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Mon 14.9

🌦️

+20° +24°

Morning

🌦️

+21°

Day

🌦️

+24°

Evening

🌇

+23°

Night

🌙

+20°

Light rain · precipitation 0% · wind up to 14 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tue 15.9

🌦️

💧 25%

+20° +24°

Morning

🌦️

+21°

Day

🌦️

+24°

Evening

🌇

+23°

Night

🌙

+20°

Drizzle · precipitation 25% · wind up to 13 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Wed 16.9

🌦️

💧 63%

+20° +26°

Morning

🌦️

+22°

Day

🌦️

+26°

Evening

🌇

+25°

Night

🌙

+20°

Drizzle · precipitation 63% · wind up to 18 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Thu 17.9

🌦️

💧 73%

+23° +25°

Morning

🌦️

+24°

Day

🌦️

+25°

Evening

🌇

+25°

Night

🌙

+23°

Rain showers · precipitation 73% · wind up to 27 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Fri 18.9

⛈️

💧 96%

+23° +26°

Morning

⛈️

+24°

Day

⛈️

+26°

Evening

🌇

+25°

Night

🌙

+23°

Thunderstorm · precipitation 96% · wind up to 24 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Sat 19.9

🌦️

💧 69%

+24° +25°

Morning

🌦️

+24°

Day

🌦️

+25°

Evening

🌇

+25°

Night

🌙

+24°

Drizzle · precipitation 69% · wind up to 25 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Sun 20.9

🌦️

💧 47%

+24° +25°

Morning

🌦️

+24°

Day

🌦️

+25°

Evening

🌇

+25°

Night

🌙

+24°

Drizzle · precipitation 47% · wind up to 27 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Mon 21.9

🌦️

💧 51%

+25° +29°

Morning

🌦️

+26°

Day

🌦️

+29°

Evening

🌇

+28°

Night

🌙

+25°

Drizzle · precipitation 51% · wind up to 27 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tue 22.9

⛈️

💧 67%

+25° +26°

Morning

⛈️

+25°

Day

⛈️

+26°

Evening

🌇

+26°

Night

🌙

+25°

Thunderstorm · precipitation 67% · wind up to 49 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Wed 23.9

⛈️

💧 51%

+22° +25°

Morning

⛈️

+23°

Day

⛈️

+25°

Evening

🌇

+24°

Night

🌙

+22°

Thunderstorm · precipitation 51% · wind up to 43 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Thu 24.9

🌦️

💧 35%

+22° +25°

Morning

🌦️

+23°

Day

🌦️

+25°

Evening

🌇

+24°

Night

🌙

+22°

Drizzle · precipitation 35% · wind up to 25 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Fri 25.9

☁️

💧 33%

+22° +24°

Morning

☁️

+23°

Day

☁️

+24°

Evening

🌇

+24°

Night

🌙

+22°

Overcast · precipitation 33% · wind up to 25 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

90 / 100

for sea and sun · Excellent

🏊 Swimming

94 / 100

water 27° · Excellent

🏃 Running

64 / 100

comfort for running · Average

🧴 UV

18%

moderate · low

☂️ Rain

unlikely · low

✨ Stars

88 / 100

evening visibility · Excellent

🧺 Laundry drying

63 / 100

will dry outside · Average

🚗 Car wash

95 / 100

no rain expected · Excellent

🌫️ Air quality

Poor air

European AQI

PM2.5: 15PM10: 22O₃: 142NO₂: 4

People with allergies or asthma should reduce time outdoors.

🌅 Sun, moon and sea

Sunrise

06:15

Sunset

18:45

Golden hour

18:12

Daylight

13 h (-2 min vs yesterday)

Sea temperature

+27°

🌊 slight, waves 0.5 m.

Jeju City 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.

+8°

+4°

Jan

+9°

+5°

Feb

+12°

+7°

Mar

+16°

+11°

Apr

+20°

+15°

May

+24°

+20°

Jun

+28°

+24°

Jul

+29°

+26°

Aug

+25°

+22°

Sep

+21°

+17°

Oct

+16°

+12°

Nov

+10°

+6°

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	+8°	+4°	+16°	77 mm	A cold month: +8° by day, long walks get uncomfortable. One of the wettest months (77 mm): downpours can derail plans. 🧣 a warmer jacket. The water is cold (+16°) — swimming is for the brave. This is the coldest month of the year.
February	+9°	+5°	+15°	66 mm	Cold: +9° by day, down to +5° at night — dress warmly. It's a rainy month (66 mm) — an umbrella is a must. 🧥 a warm jacket. The water is cold (+15°) — swimming is for the brave.
March	+12°	+7°	+14°	97 mm	A fresh month — +12° daytime, take a jacket for walks. Frequent rain (97 mm over the month) — keep indoor backup plans. 🧥 a warm jacket. The water is cold (+14°) — swimming is for the brave.
April	+16°	+11°	+15°	107 mm	Cool weather: +16° by day, noticeably colder in the evening. One of the wettest months (107 mm): downpours can derail plans. 🙂 a sweater for the evening. The water is cold (+15°) — swimming is for the brave.
May	+20°	+15°	+18°	112 mm	One of the best times to visit: +20° by day, fresh nights. It's a rainy month (112 mm) — an umbrella is a must. 🙂 a sweater for the evening. Sea at +18° — swimmable, refreshing. Weather-wise, one of the three best months to visit.
June	+24°	+20°	+22°	196 mm	Ideal weather: +24° daytime — neither hot nor cold. Frequent rain (196 mm over the month) — keep indoor backup plans. 🙂 a sweater for the evening. Water at +22° — great for swimming. Statistically the wettest month of the year.
July	+28°	+24°	+27°	195 mm	A comfortable month: +28° by day without exhausting heat. One of the wettest months (195 mm): downpours can derail plans. 😊 light summer clothing. Water at +27° — great for swimming.
August	+29°	+26°	+30°	185 mm	Warm and comfortable: +29° by day, +26° at night. It's a rainy month (185 mm) — an umbrella is a must. 😊 light summer clothing. The sea is +30° — like a warm bath. This is the hottest month of the year in Jeju City.
September	+25°	+22°	+29°	185 mm	Ideal weather: +25° daytime — neither hot nor cold. Frequent rain (185 mm over the month) — keep indoor backup plans. 😊 light summer clothing. Water at +29° — great for swimming.
October	+21°	+17°	+25°	92 mm	The most pleasant season: +21° by day, comfortable all day long. One of the wettest months (92 mm): downpours can derail plans. 🙂 a sweater for the evening. Water at +25° — great for swimming. Weather-wise, one of the three best months to visit.
November	+16°	+12°	+21°	72 mm	Cool: around +16° by day, you'll need a warm layer. It's a rainy month (72 mm) — an umbrella is a must. 🧥 a warm jacket. Sea at +21° — swimmable, refreshing. Weather-wise, one of the three best months to visit.
December	+10°	+6°	+18°	72 mm	A fresh month — +10° daytime, take a jacket for walks. Frequent rain (72 mm over the month) — keep indoor backup plans. 🧥 a warm jacket. Sea at +18° — swimmable, refreshing. The shortest daylight of the year — it gets dark early.

When to visit Jeju City

✅ Recommended time to visit

🌟 Best time: May, October, November

Daytime air+16…+21°

Sea temperature+18…+25°

Precipitationoften

Why: comfortable +16…+21° by day, little rain.

⚠️ Doable, with caveats

🌤️ Shoulder season: April, June, July, August, September, December

Daytime air+10…+29°

Sea temperature+15…+30°

Precipitationoften

Why: noticeable rain risk (72–196 mm/month) — pack an umbrella and backup plans.

🔴 Not the best time

❄️ Cold season: January, February, March

Daytime air+8…+12°

Sea temperature+14…+16°

Precipitationoften

Why: cold and dark (+8…+12° by day, 10 h of daylight) — only if frost and short days don’t put you off.

Bottom line: the best time to visit Jeju City is May, October, November, and the most comfortable months are May, October, November. The toughest months to visit are January, February, March: frequent rain.