Weather in September
The ideal sea water temperature of 26°C (78.8°F) makes September in Inno-shima, Japan, the best time for swimming and other water activities.
Note: In water temperatures ranging between 25°C (77°F) and 29°C (84.2°F), activities such as swimming and diving become highly pleasurable for long durations.
On the first day of September, sunrise is at 05:40 and sunset at 18:33. On the last day of the month, sunrise is at 06:01 and sunset at 17:53 JST.
Sea temperature
In September, the average sea temperature is 26°C (78.8°F).Note: In water temperatures ranging between 25°C (77°F) and 29°C (84.2°F), activities such as swimming and diving become highly pleasurable for long durations.
Daylight
In September, the average length of the day is 12h and 24min.On the first day of September, sunrise is at 05:40 and sunset at 18:33. On the last day of the month, sunrise is at 06:01 and sunset at 17:53 JST.
Frequently asked questions
What is the sea water temperature in September in Inno-shima?
In Inno-shima, Japan, the average seawater temperature in September is 26°C (78.8°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.
What is the average length of the day in September in Inno-shima?
The average day length in September is 12h and 24min.
When are sunrise and sunset in September in Inno-shima?
In September, on the first day of the month, sunrise is at 05:40 and sunset at 18:33. On the last day of the month, in Inno-shima, sunrise is at 06:01 and sunset at 17:53 JST.
Average sea temperature in September
Inno-shima, Japan
- Average sea temperature in September: 26°C
The best month for swimming (with the highest average sea temperature) is August (27.2°C).
The coldest month (with the lowest average sea temperature) is February (13.7°C).
Average daylight in September
Inno-shima, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
Inno-shima, Japan
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