Swimming in Hainan island (Haikou) in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Hainan island (Haikou) in september 2025.
In september, according to seasonal norms, the sea temperature in Hainan island (Haikou) is:
Minimum: 80°F
Average: 83°F
Maximum: 87°F
Other useful seasonal weather averages in september:
- Outside temperature: 82°F to 88°F
- Most common weather: "Clear/Sunny"
- The wind blows at 17.4mph
- It rains a total of 10.5in, over 11 day(s).
Should we swim in Hainan island (Haikou) in september?
Yes! The water temperature in Hainan island (Haikou) in september is ideal
In september, swimming is ideal on the beaches around Hainan island (Haikou)! 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 tolerable with an average outside temperature of 85°F, 10.5in of precipitation (over 11 days) and 83.41 % humidity.
Water and normal seasonal temperatures in Hainan island (Haikou) in september
| September | |||
| Average sea temperature | 83°F | ||
| Minimum sea temperature | 80°F | ||
| Maximum sea temperature | 87°F | ||
| Average outside temperature | 86°F | ||
| Maximum outside temperature | 88°F | ||
| Minimum outside temperature | 83°F | ||
| Wind speed | 10.6mph | ||
| Wind temperature | 83°F | ||
| Precipitation | 10.5in | ||
| Number of days of rain | 11 jour(s) (36%) | ||
| Humidity | 84% | ||
| Visibility in kilometers | 9.26km | ||
| Cloud cover | 35% | ||
| Our opinion | ideal swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Hainan island (Haikou)
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 | Qingdao in september | 75°F | 79°F | pleasant swimming | Wenzhou in september | 81°F | 85°F | ideal swimming | Hainan in september | 83°F | 87°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 |