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:
2026
2025
2024
The average sea water temperature in September of 2026 was 83.3°F. The highest and lowest sea temperatures during the month were 84.4°F and 82.6°F.
Monthly sea water temperature in Okinawa, °F
Which Japan resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Okinawa | 83.3°F | 85.9°F |
| Nagasaki | 83.2°F | 83.9°F |
| Fukuoka | 82.3°F | 83.2°F |
| Kobe | 82.1°F | 81.5°F |
| Osaka | 82.1°F | 82.5°F |
| Nara | 81.8°F | 82.6°F |
| Nagoya | 80.6°F | 82.2°F |
| Hiroshima | 80.5°F | 81.4°F |
| Kyoto | 80.4°F | 82.6°F |
| Tokyo | 80.0°F | 81.6°F |
| Yokohama | 79.5°F | 80.9°F |
| Kamakura | 79.2°F | 79.6°F |
| Atami | 79.1°F | 79.7°F |
| Hakone | 79.0°F | 79.4°F |
| Sapporo | 72.1°F | 73.2°F |
| Noboribetsu | 69.3°F | 71.1°F |
Best time for vacation in Okinawa
Okinawa on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Okinawa
Local time: 20:04
September 15, tuesday
2100
79°F
SW
6 mph
6 mph
September 16, wednesday
0000
77°F
SW
4 mph
4 mph
0300
77°F
SW
4 mph
4 mph
0600
77°F
SW
4 mph
4 mph
0900
79°F
SW
4 mph
4 mph
1200
81°F
SW
6 mph
6 mph
1500
82°F
SW
5 mph
5 mph
1800
79°F
SW
6 mph
6 mph
