Average sea water temperature in September:
+80.4°F
| Minimum sea water temperature in September: | 86.2°F |
| Maximum sea water temperature in September: | 76.1°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 81.9°F. The highest and lowest sea temperatures during the month were 86.2°F and 79.5°F.
sea water
temperature
temperature
| Nagasaki |
monthly
weather
weather
| Nagasaki |
current
weather
weather
| Nagasaki |
14 days
forecast
forecast
| Nagasaki |
Monthly sea water temperature in Nagasaki, °F
Which Japan resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Okinawa | 83.6°F | 85.9°F |
| Nagasaki | 81.9°F | 83.9°F |
| Kobe | 81.2°F | 81.5°F |
| Osaka | 81.2°F | 82.5°F |
| Nara | 80.6°F | 82.6°F |
| Fukuoka | 80.2°F | 83.2°F |
| Nagoya | 79.4°F | 82.2°F |
| Hiroshima | 79.3°F | 81.4°F |
| Kyoto | 79.1°F | 82.6°F |
| Hakone | 78.2°F | 79.4°F |
| Atami | 78.1°F | 79.7°F |
| Tokyo | 77.9°F | 81.6°F |
| Yokohama | 77.8°F | 80.9°F |
| Kamakura | 77.7°F | 79.6°F |
| Sapporo | 71.1°F | 73.2°F |
| Noboribetsu | 68.6°F | 71.1°F |
Best time for vacation in Nagasaki
Nagasaki on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Nagasaki
Local time: 15:18
October 31, saturday
1800
66°F
SE
8 mph
8 mph
2100
64°F
S
6 mph
6 mph
November 01, sunday
0000
63°F
SW
4 mph
4 mph
0300
63°F
W
2 mph
2 mph
0600
63°F
W
2 mph
2 mph
0900
66°F
W
4 mph
4 mph
1200
68°F
N
6 mph
6 mph
1500
70°F
N
8 mph
8 mph
