Best Time to Visit Nagasaki, Nagasaki Prefecture, Japan
Month-by-month climate guide for planning a trip to Nagasaki.
Nagasaki does not have a month that clearly fits our sunny profiles. Its practical travel window centres on its warmest (August, 26.9°C / 80.4°F) and driest (December, 64 mm / 2.5 in) months. The drier stretch runs through October–April; the wetter half falls in May–September. At the city itself, monthly average temperatures range from 5.5°C / 41.9°F in January to 26.9°C / 80.4°F in August, with rainfall from 64 mm / 2.5 in (December) to 376 mm / 14.8 in (June). These are point-value climate normals sampled at Nagasaki, Nagasaki Prefecture, Japan's coordinates — usually more actionable for travellers than the country-wide average. Nagasaki's climate is broadly seasonal. The full month-by-month table below lets you match your travel window against our five weather profiles.
Recommended months
| Month | Temp | Rain | Feels like |
|---|---|---|---|
| October | 18.4°C65.1°F | 103 mm4.1″ | — |
| November | 13°C55.4°F | 85 mm3.3″ | — |
| December | 7.9°C46.2°F | 64 mm2.5″ | — |
No month at Nagasaki matches our sunny profiles. The three above are the driest-and-warmest fallback.
Frequently asked questions
When is the best time to visit Nagasaki?
Nagasaki doesn't have a month that clearly matches our sunny profiles. The practical travel window centres on December (driest, ~64 mm / 2.5 in) and August (warmest, 26.9°C / 80.4°F). Because these are point values at the city, they can differ substantially from Japan's national average.
When is the rainy season in Nagasaki?
The rainy season at Nagasaki, Nagasaki Prefecture runs through May–September, when monthly rainfall exceeds the annual median of about 183 mm / 7.2 in. The wettest single month is June (376 mm / 14.8 in).
What is the driest month in Nagasaki?
The driest month in Nagasaki is December, averaging about 64 mm / 2.5 in of rainfall. Temperature that month averages 7.9°C / 46.2°F.
What months should I avoid visiting Nagasaki?
The least comfortable months for travel to Nagasaki — based on point-value climate at the city — are January, February, March, June, July, September, December. These are the wettest or coolest months at this location. Rainfall peaks at 376 mm / 14.8 in in June, and the coldest month averages 5.5°C / 41.9°F.
Is Nagasaki climate different from Japan overall?
Yes, usually. Our Nagasaki figures are point-value climate normals sampled at the city itself, while our Japan figures are area-weighted averages across the whole country. The two can diverge substantially in geographically diverse or elevation-varied countries. The month-by-month table below reflects Nagasaki specifically — usually the more actionable data for a traveller planning to spend time in the city.