Current sea water temperature:
+66.0°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: | 64.6°F |
| more information | |
14 days
forecast
forecast
| Nagasaki |
monthly
weather
weather
| Nagasaki |
Sea water temperature for the last 10 days:
| December 23 | 66.0°F | December 18 | 66.2°F |
| December 22 | 66.4°F | December 17 | 67.3°F |
| December 21 | 66.4°F | December 16 | 66.4°F |
| December 20 | 66.0°F | December 15 | 66.7°F |
| December 19 | 66.2°F | December 14 | 66.9°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: 08:15
December 24, wednesday
0900
59°F
N
3 mph
3 mph
1200
61°F
SE
12 mph
12 mph
1500
57°F
SE
13 mph
13 mph
1800
55°F
SE
9 mph
9 mph
2100
55°F
SE
7 mph
7 mph
December 25, thursday
0000
57°F
SE
6 mph
6 mph
0300
57°F
E
16 mph
16 mph
0600
55°F
SE
17 mph
17 mph
