December 4 is generally a great time to visit Jeju Island. While there is a slight chance of rain (23%), showers are usually brief. Expect comfortable 11°C weather. Jeju Island is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Jeju Island
Currency
KRW
₩ South Korean won
Language
Korean
Driving
Right side
Safety
High Safety
GPI: 1.779
Jeju Island Weather Forecast for December 4
"Mild & Comfortable. Expect average highs of 11.4°C. 23% chance of rain."
What to Wear in Jeju Island in December
Based on historical data for December 4, Jeju Island typically experiences temperatures between 6.9°C and 11.4°C. We recommend packing heavy coat, scarf, gloves to stay comfortable. Trends suggest it will stay mostly dry (23% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Jeju Island
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
Average High
11.4°C
Daytime Peak
Average Low
6.9°C
Nighttime Low
Feels Like
9.8°C
❄️ Minor difference
Rain Chance
23%
Avg 1.4mm if it rains
Cloud Cover
63%
Overcast
Pressure
1023.9 hPa
Medium volatility
Jeju Island Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 81% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
6.3°C
Dry air
Heat Stress
Low
No heat warning
😐 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in South Korea
Flight Traffic
High
89/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~219
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Jeju Island
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:23
☀️ Noon
12:25
🌇 Sunset
17:27
⏱️ Daylight
10h 3m
Wind Speed
21.8 km/h
Moderate wind
Sunshine
6.3 hrs
Direct Sun (Cloud-free)
Humidity
71%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Jeju Island
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Jeju Island
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
High pressure may reduce activity.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
Typhoon Risk
Year-round risk present
Travel Alert: This region has elevated natural risks. We recommend registering with your embassy and keeping emergency numbers handy.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Jeju Island on December 4 averages 11.4°C with a 23% precipitation probability. Wedding/Outdoor Event Score: 76/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Jeju Island Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
November 27
13.8°C • 25% rain
Score
90
November 28
13.5°C • 28% rain
Score
85
November 29
13.1°C • 30% rain
Score
82
💡 Moving your event by a few days could significantly improve weather conditions
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📍 Is Jeju Island Worth Visiting on December 4?
Planning a trip to Jeju Island on December 4? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 11.4°C with a 23% historical precipitation risk.
✈️ Travel Logistics: Approximately 219 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 10 vaccinations are recommended for South Korea, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 19°C (refreshing tonic). Wave conditions are generally surfers only with heights around 1.3m.
📊 Historical Extremes: The hottest December 4 recorded in the last 30 years saw temperatures hit 17.4°C in 2018, while the coldest dropped to 3.6°C in 2017.