Current sea water temperature:
+66.9°F
| Minimum sea water temperature in December: | 69.6°F |
| Maximum sea water temperature in December: | 59.7°F |
| Average sea water temperature in December: | 64.5°F |
| more information | |
14 days
forecast
forecast
| Nagasaki |
monthly
weather
weather
| Nagasaki |
Sea water temperature for the last 10 days:
| December 14 | 66.9°F | December 9 | 66.7°F |
| December 13 | 67.5°F | December 8 | 67.6°F |
| December 12 | 67.8°F | December 7 | 67.5°F |
| December 11 | 66.4°F | December 6 | 68.2°F |
| December 10 | 66.6°F | December 5 | 68.0°F |
Monthly sea water temperature, °F
When is the warmest sea in Nagasaki?
Based on the data about daily sea water temperature for the last three years the warmest sea in Nagasaki was noticed in August, September and July.
Monthly Sea Temperatures in Nagasaki, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
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.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 83.9°F. The highest and lowest sea temperatures during the month were 85.3°F and 81.9°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 83.4°F. The highest and lowest sea temperatures during the month were 85.1°F and 80.8°F.
current
weather
weather
| Nagasaki |
weather in
December
December
| Nagasaki |
Best time for vacation in Nagasaki
Nagasaki on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Nagasaki
Local time: 15:49
December 15, monday
1800
50°F
SE
6 mph
6 mph
2100
48°F
SE
5 mph
5 mph
December 16, tuesday
0000
48°F
SE
4 mph
4 mph
0300
46°F
S
2 mph
2 mph
0600
46°F
S
2 mph
2 mph
0900
50°F
SW
2 mph
2 mph
1200
55°F
NE
2 mph
2 mph
1500
57°F
NE
5 mph
5 mph
