Nagasaki, JapanQuick decision
When to visit Nagasaki?
🌞 Best time overall
October
🌡️ Optimal temperature
18°C–23°C in October
🌧 Least rain
27% rainy days in October
🌧 Wettest month
February (35%)
📅 Best score
7.7/10
By trip type
Best time by type of trip
Peace MemorialYear-round — Peace Park, museum, August 9 ceremony.
Glover GardenMar–May — hillside gardens, Western architecture, bay views.
Kunchi FestivalOctober — 400-year-old Chinese dragon festival, Dejima quarter.
Champon & castellaYear-round — champon noodles, Portuguese castella cake, shippoku.
Monthly climate data
Nagasaki weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌫️ January | 5°C | 11°C | 29% | 2.3 | 7.6h | 5.0/10 |
| 🌦️ February | 5°C | 11°C | 35% | 3.6 | 8.9h | 4.9/10 |
| ⛅ March | 8°C | 15°C | 38% | 5.3 | 10.0h | 6.3/10 |
| 🌤️ April | 12°C | 19°C | 35% | 5.8 | 10.7h | 7.2/10 |
| 🌤️ May | 16°C | 23°C | 35% | 8.0 | 10.2h | 7.5/10 |
| 🌤️ June | 20°C | 26°C | 53% | 11.8 | 8.8h | 7.3/10 |
| 🌤️ July | 25°C | 29°C | 58% | 11.1 | 11.6h | 7.4/10 |
| 🌤️ August | 26°C | 31°C | 49% | 7.8 | 12.6h | 7.4/10 |
| 🌤️ September | 23°C | 28°C | 51% | 7.1 | 10.4h | 7.6/10 |
| 🌤️ October | 18°C | 23°C | 27% | 3.6 | 10.0h | 7.7/10 |
| 🌤️ November | 12°C | 18°C | 29% | 3.1 | 9.4h | 7.1/10 |
| ⛅ December | 6°C | 12°C | 28% | 2.6 | 7.7h | 5.3/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Good time
Average 19°C, 36% rainy days, 10.3h sunshine/day. Score: 7.0/10.
☀️ Summer (Jun–Aug) — Good time
Average 29°C, 53% rainy days, 11.0h sunshine/day. Score: 7.4/10.
🍂 Autumn (Sep–Nov) — Good time
Average 23°C, 36% rainy days, 9.9h sunshine/day. Score: 7.5/10.
❄️ Winter (Dec–Feb) — Challenging climate
Average 11°C, 31% rainy days, 8.1h sunshine/day. Score: 5.1/10.
Accommodation
Find a place to stay in Nagasaki
Check availability during the recommended period
Tip : off-peak months (February, March) are cheapest but weather is significantly worse.
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Activities and tours in Nagasaki
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Flights
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Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
October is ideal with 27% rainy days and 23°C.
February is the wettest month with 35% rainy days.
Yes, October is the best month with an average of 23°C.
In winter, the average score is 5.1/10. Difficult period — prefer the peak season.
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