September
Weather in September
Sea temperature
In Dachangshan Island, China, in September, the average water temperature is 21.8°C (71.2°F).Note: Swimming becomes less enjoyable for most at a surface water temperature of 21.8°C (71.2°F). As the temperature decreases below 21°C (69.8°F), breathing becomes increasingly difficult.
Daylight
The average length of the day in September in Dachangshan Island is 12h and 28min.On the first day of the month, sunrise is at 05:18 and sunset at 18:20. On the last day of September, sunrise is at 05:44 and sunset at 17:34 CST.
Updated: Aug 29, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the sea temperature in September?
In September, the average sea temperature is 21.8°C (71.2°F). For swimming, a surface water temperature of 21.8°C (71.2°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).
What is the average length of the day in September?
The average day length in September is 12h and 28min.
When are sunrise and sunset in September?
On the first day of September, sunrise is at 05:18 and sunset at 18:20. On the last day of the month, sunrise is at 05:44 and sunset at 17:34 CST.
Average sea temperature in September
Dachangshan Island, China
- Average sea temperature in September: 21.8°C
The best month for swimming (with the highest average sea temperature) is August (24.3°C).
The coldest month (with the lowest average sea temperature) is February (2.2°C).
Average daylight in September
Dachangshan Island, China
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
