Weather in September
Sea temperature
In Shizunai, Japan, the average seawater temperature in September is 20.1°C (68.2°F).Note: Most people do not enjoy swimming in water of 20.1°C (68.2°F). Breathing control becomes harder as the temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day in Shizunai is 12h and 30min.On the first day of the month, sunrise is at 04:55 and sunset at 18:05. On the last day of September, sunrise is at 05:26 and sunset at 17:14 JST.
Frequently asked questions
How cold is the water in September in Shizunai?
In September, the average sea temperature in Shizunai is 20.1°C (68.2°F). For swimming, a surface water temperature of 20.1°C (68.2°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
How many hours of daylight does Shizunai have in September?
In September, the average day length is 12h and 30min.
What time are sunrise and sunset in September in Shizunai?
On the first day of September, sunrise is at 04:55 and sunset at 18:05. On the last day of the month, sunrise is at 05:26 and sunset at 17:14 JST.
Average sea temperature in September
Shizunai, Japan
- Average sea temperature in September: 20.1°C
The best month for swimming (with the highest average sea temperature) is August (20.4°C).
The coldest months (with the lowest average sea temperature) are February and March (2°C).
Average daylight in September
Shizunai, Japan
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
Shizunai, Japan
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