Weather in Nagasaki: August
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Average day temperature: | 87.6°F |
| Average night temperature: | 79.6°F | |
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Sea water temperature: | 82.7°F |
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Number of sunny days: | 13 days |
| Day length: | 12.9 - 13.8 hours | |
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Number of rainy days: | 10 days |
| Precipitation totals: | 9.2 in. | |
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forecast
| Nagasaki |
temperature
| Nagasaki |
Air temperature in August, °F
The highest day temperature during August of 2025 was 88°F. At the same time the lowest night temperature was 77°F. Daily and nightly averages during August were 85.0°F and 79.6°F.
Sea water temperature in Nagasaki in August, °F
The average sea water temperature in August of 2025 was 84.8°F. The highest and lowest sea temperatures during the month were 86.4°F and 82.9°F.
Mostly all days in August are sunny but cloudy days are also possible.
Precipitation total in August, in.
Precipitation total value in Nagasaki in August is 8.2 in. It makes august one of the most rainy months of the year.
The average wind speed value in August is 7.8 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 6.8.
Best time for vacation in Nagasaki
Nagasaki on a weather map
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