December 1 is generally a great time to visit Nagasaki. While there is a slight chance of rain (23%), showers are usually brief. Expect comfortable 15°C weather. You'll find plenty of company in Nagasaki this month as tourism activity remains quite robust.
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Essential Travel Info for Nagasaki
Currency
JPY
¥ Japanese yen
Language
Japanese
Driving
Left side
Safety
Very High Safety
GPI: 1.336
Nagasaki Weather Forecast for December 1
"Mild & Comfortable. Expect average highs of 14.5°C. 23% chance of rain."
What to Wear in Nagasaki in December
Based on historical data for December 1, Nagasaki typically experiences temperatures between 9.8°C and 14.5°C. We recommend packing light jacket, long pants 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 Nagasaki
Smart Suitcase
- Light Jacket
- Long Pants
Average High
14.5°C
Daytime Peak
Average Low
9.8°C
Nighttime Low
Feels Like
14.3°C
🌤️ Feels accurate
Rain Chance
23%
Avg 1.8mm if it rains
Cloud Cover
55%
Overcast
Pressure
1021.3 hPa
Medium volatility
Nagasaki Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 83% 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
8.9°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 Japan
Flight Traffic
Busy
75/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~36
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Nagasaki
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:05
☀️ Noon
12:10
🌇 Sunset
17:15
⏱️ Daylight
10h 10m
Wind Speed
21.9 km/h
Moderate wind
Sunshine
6.9 hrs
Direct Sun (Cloud-free)
Humidity
69%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Nagasaki
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Nagasaki
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
Moderate seismic activity. Occasional tremors possible.
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, Nagasaki on December 1 averages 14.5°C with a 23% precipitation probability. Wedding/Outdoor Event Score: 93/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Nagasaki Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (December 1) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Nagasaki Worth Visiting on December 1?
Planning a trip to Nagasaki on December 1? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 14.5°C with a 23% historical precipitation risk.
✈️ Travel Logistics: Approximately 36 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 8 vaccinations are recommended for Japan, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 20.3°C (refreshing tonic). Wave conditions are generally fun waves with heights around 1.09m.
📊 Historical Extremes: The hottest December 1 recorded in the last 30 years saw temperatures hit 20.5°C in 2025, while the coldest dropped to 5.6°C in 2022.