Live Weather & Forecast
Weather in Jeju-Si
South Korea · Real-time conditions & 3-day outlook
19°C
Feels like 19°C
67°F / Feels 67°F
Partly cloudy
Jeju-Si, South Korea
🌞 Daytime
Updated: 2026-04-15 10:30
Humidity
52%
Wind
10.4 km/h NW
Wind Gust
12 km/h
Pressure
1013 mb
Visibility
10 km
UV Index
4.9
(Moderate)
Precipitation
0 mm
Cloud Cover
50%
Dew Point
9.9°C
Wind Degree
319°
Air Quality Index
US EPA: Moderate
UK DEFRA: Low (2)
CO
222.8 μg/m³
NO₂
17.7 μg/m³
O₃
85 μg/m³
SO₂
8.2 μg/m³
PM 2.5
16.9 μg/m³
PM 10
25 μg/m³
Today's Hourly Forecast
24-hour breakdown for Jeju-Si, South Korea
12 AM
15°
Patchy rain nearby
1 AM
15°
Patchy rain nearby
2 AM
15°
Overcast
3 AM
15°
Patchy rain nearby
4 AM
15°
Overcast
5 AM
14°
Patchy rain nearby
6 AM
14°
Partly Cloudy
7 AM
14°
Partly Cloudy
8 AM
15°
Partly Cloudy
9 AM
16°
Partly Cloudy
10 AM
19°
Partly cloudy
11 AM
17°
Sunny
12 PM
17°
Sunny
1 PM
17°
Sunny
2 PM
17°
Sunny
3 PM
17°
Sunny
4 PM
17°
Sunny
5 PM
17°
Sunny
6 PM
17°
Sunny
7 PM
15°
Partly Cloudy
8 PM
14°
Clear
9 PM
15°
Partly Cloudy
10 PM
14°
Cloudy
11 PM
14°
Overcast
3-Day Forecast
Daily overview for Jeju-Si, South Korea
Today
Partly Cloudy
17°
/
14°
🌧️ 0% chance of rain
💧 Avg. humidity: 71%
💨 Max wind: 16.9 km/h
🌧️ Total precip: 0.03 mm
☀️ UV Index: 2.2
🌅 Sunrise: 06:04 AM
🌇 Sunset: 07:05 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Partly Cloudy
17°
/
13°
🌧️ 0% chance of rain
💧 Avg. humidity: 69%
💨 Max wind: 36.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2.2
🌅 Sunrise: 06:03 AM
🌇 Sunset: 07:05 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Moderate rain
17°
/
14°
🌧️ 88% chance of rain
💧 Avg. humidity: 91%
💨 Max wind: 23.8 km/h
🌧️ Total precip: 10.94 mm
☀️ UV Index: 0.3
🌅 Sunrise: 06:02 AM
🌇 Sunset: 07:06 PM
🌙 New Moon
🌑 Moon: 0% lit
Best Time to Visit Jeju-Si
Plan your trip around the most favorable weather conditions in Jeju-Si, South Korea.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Jeju-Si?
Current conditions in Jeju-Si: Partly cloudy, temperature 19°C, humidity 52%.
What is the best time to visit Jeju-Si?
The best time to visit Jeju-Si is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Jeju-Si?
Jeju-Si shares the climate of South Korea. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Jeju-Si?
Rainfall patterns in Jeju-Si vary by season. Peak rainfall typically occurs outside of the dry season.
What should I pack for Jeju-Si?
For visits during June – September: light clothing and sun protection. For the November – March period: layers and a waterproof jacket are recommended for Jeju-Si.
What country is Jeju-Si in?
Jeju-Si is a state/province of South Korea.
What are the public holidays in Jeju-Si in 2026?
View the full list of 2026 public holidays for Jeju-Si on our Holidays page.
What are the coordinates for the weather forecast in Jeju-Si?
The weather forecast for Jeju-Si is based on coordinates 33.394, 126.5627.