Climate of Nagasaki Prefecture, Japan
Area-weighted average across Nagasaki Prefecture. For where people actually live and travel, see the cities below.
Nagasaki Prefecture, a subdivision of Japan, has a seasonal climate on average. Area-weighted monthly temperatures across the whole territory range from 5.3°C / 41.5°F in January to 26.4°C / 79.5°F in August, with rainfall from 67 mm / 2.6 in to 335 mm / 13.2 in depending on the season (2048 mm / 80.6 in total across the year). See the city listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 5.3°C41.5°F | 76 mm3″ | — |
| February | 6.1°C43°F | 90 mm3.5″ | — |
| March | 9.1°C48.4°F | 134 mm5.3″ | — |
| April | 13.9°C57°F | 189 mm7.4″ | — |
| May | 17.8°C64°F | 201 mm7.9″ | — |
| June | 21.2°C70.2°F | 335 mm13.2″ | — |
| July | 25.3°C77.5°F | 328 mm12.9″ | — |
| August | 26.4°C79.5°F | 215 mm8.5″ | — |
| September | 23°C73.4°F | 222 mm8.7″ | — |
| October | 18.1°C64.6°F | 100 mm3.9″ | — |
| November | 12.8°C55°F | 91 mm3.6″ | — |
| December | 7.8°C46°F | 67 mm2.6″ | — |
Frequently asked questions
What is the best time to visit Nagasaki Prefecture?
Nagasaki Prefecture, Japan does not have a clear sunny-and-dry window by our cutoffs. The warmest month is August at 26.4°C / 79.5°F, and the driest is December at 67 mm / 2.6 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Nagasaki Prefecture?
Nagasaki Prefecture, Japan has area-weighted monthly average temperatures ranging from 5.3°C / 41.5°F in January to 26.4°C / 79.5°F in August. Annual rainfall averages about 2048 mm / 80.6 in, with the wettest month being June (335 mm / 13.2 in) and the driest December (67 mm / 2.6 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Nagasaki Prefecture?
The hottest month in Nagasaki Prefecture is August, with an area-wide average temperature of 26.4°C / 79.5°F.
What is the coldest month in Nagasaki Prefecture?
The coldest month in Nagasaki Prefecture is January, with an area-wide average temperature of 5.3°C / 41.5°F.
When does it rain most in Nagasaki Prefecture?
The wettest month in Nagasaki Prefecture is June, averaging about 335 mm / 13.2 in of rainfall. The driest is December with about 67 mm / 2.6 in.