Average sea water temperature in September:
+78.7°F
| Minimum sea water temperature in September: | 85.8°F |
| Maximum sea water temperature in September: | 72.1°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 80.0°F. The highest and lowest sea temperatures during the month were 81.7°F and 78.6°F.
Monthly sea water temperature in Tokyo, °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 Tokyo
Tokyo on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Tokyo
Local time: 20:17
September 15, tuesday
2100
72°F
W
12 mph
12 mph
September 16, wednesday
0000
72°F
SW
9 mph
9 mph
0300
72°F
S
7 mph
7 mph
0600
70°F
SW
7 mph
7 mph
0900
70°F
SW
6 mph
6 mph
1200
70°F
S
8 mph
8 mph
1500
68°F
S
10 mph
10 mph
1800
68°F
SW
9 mph
9 mph
