October 25 is generally a great time to visit Nagasaki. While there is a slight chance of rain (20%), showers are usually brief. Expect comfortable 21°C weather. It's a lively time to explore Nagasaki, with most attractions operating at full capacity.
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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 October 25
"Mild & Comfortable. Expect average highs of 21.4°C. 20% chance of rain."
What to Wear in Nagasaki in October
Based on historical data for October 25, Nagasaki typically experiences temperatures between 16.3°C and 21.4°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (20% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Nagasaki
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
21.4°C
Daytime Peak
Average Low
16.3°C
Nighttime Low
Feels Like
21.6°C
☀️ Feels accurate
Rain Chance
20%
Avg 2.3mm if it rains
Cloud Cover
47%
Overcast
Pressure
1018 hPa
Low volatility
Nagasaki Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 100% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 47 min to burn
Type III-IV
🟡 71 min to burn
Type V-VI
🟢 118 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
16.1°C
Noticeable
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
✅ Excellent Swimming 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
06:32
☀️ Noon
12:05
🌇 Sunset
17:38
⏱️ Daylight
11h 5m
Wind Speed
18.7 km/h
Gentle breeze
Sunshine
7.9 hrs
Direct Sun (Cloud-free)
Humidity
72%
Humid / Damp
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
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
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 October 25 averages 21.4°C with a 20% precipitation probability. Wedding/Outdoor Event Score: 97/100."
— 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
October 28
20.7°C • 15% rain
Score
100
October 29
20.5°C • 15% rain
Score
100
October 30
20.4°C • 15% rain
Score
100
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (October 25) in other destinations
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📍 Is Nagasaki Worth Visiting on October 25?
Planning a trip to Nagasaki on October 25? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 21.4°C with a 20% 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 24.7°C (swimming pool). Wave conditions are generally fun waves with heights around 0.59m.
📊 Historical Extremes: The hottest October 25 recorded in the last 30 years saw temperatures hit 24.6°C in 2025, while the coldest dropped to 12.6°C in 2022.