Swimming in Hainan in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Hainan in september 2025.
In september, according to seasonal norms, the sea temperature in Hainan is:
Minimum: 81°F
Average: 83°F
Maximum: 87°F
Other useful seasonal weather averages in september:
- Outside temperature: 78°F to 89°F
- Most common weather: "Partly Cloudy"
- The wind blows at 16.2mph
- It rains a total of 9.8in, over 12 day(s).
Should we swim in Hainan in september?
Yes! The water temperature in Hainan in september is ideal
In september, swimming is ideal on the beaches around Hainan! With water reaching 87°F at most and 83°F on average, spending time in the water is very pleasant.
Note also that in september, the climate is good with an average outside temperature of 83°F, 9.8in of precipitation (over 12 days) and 89.42 % humidity.
Water and normal seasonal temperatures in Hainan in september
| September | |||
| Average sea temperature | 83°F | ||
| Minimum sea temperature | 81°F | ||
| Maximum sea temperature | 87°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 90°F | ||
| Minimum outside temperature | 79°F | ||
| Wind speed | 6.2mph | ||
| Wind temperature | 79°F | ||
| Precipitation | 9.8in | ||
| Number of days of rain | 12 jour(s) (40%) | ||
| Humidity | 90% | ||
| Visibility in kilometers | 7.55km | ||
| Cloud cover | 45% | ||
| Our opinion | ideal swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Hainan
Swim elsewhere in China in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Shanghai in september | 78°F | 83°F | pleasant swimming | Dalian in september | 72°F | 77°F | pleasant swimming | Hainan island (Haikou) in september | 83°F | 87°F | ideal swimming | Qingdao in september | 75°F | 79°F | pleasant swimming | Wenzhou in september | 81°F | 85°F | ideal swimming | Hangzhou in september | 78°F | 82°F | pleasant swimming | Macao in september | 83°F | 86°F | ideal swimming | Sanya in september | 84°F | 86°F | ideal swimming | Shenzhen in september | 83°F | 86°F | ideal swimming | Xiamen in september | 81°F | 84°F | ideal swimming |