Average sea water temperature in September:
+83.8°F
| Minimum sea water temperature in September: | 87.3°F |
| Maximum sea water temperature in September: | 79.2°F |
Daily sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 85.9°F. The highest and lowest sea temperatures during the month were 86.4°F and 85.1°F.
Monthly sea water temperature in Okinawa, °F
Which Japan resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Okinawa | 85.9°F | 85.3°F |
| Nagasaki | 83.9°F | 83.8°F |
| Fukuoka | 83.2°F | 82.6°F |
| Kyoto | 82.6°F | 84.0°F |
| Nara | 82.6°F | 83.6°F |
| Osaka | 82.5°F | 83.4°F |
| Nagoya | 82.2°F | 84.0°F |
| Tokyo | 81.6°F | 81.9°F |
| Kobe | 81.5°F | 82.7°F |
| Hiroshima | 81.4°F | 82.2°F |
| Yokohama | 80.9°F | 81.6°F |
| Atami | 79.7°F | 81.1°F |
| Kamakura | 79.6°F | 81.0°F |
| Hakone | 79.4°F | 81.1°F |
| Sapporo | 73.2°F | 72.2°F |
| Noboribetsu | 71.1°F | 71.5°F |
Best time for vacation in Okinawa
Okinawa on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Okinawa
Local time: 19:49
December 20, saturday
2100
68°F
NW
1 mph
1 mph
December 21, sunday
0000
68°F
N
4 mph
4 mph
0300
70°F
N
5 mph
5 mph
0600
70°F
NE
2 mph
2 mph
0900
70°F
SE
2 mph
2 mph
1200
72°F
S
7 mph
7 mph
1500
72°F
S
14 mph
14 mph
1800
68°F
S
19 mph
19 mph
