Swimming in Halong Bay in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Halong Bay in september 2025.
In september, according to seasonal norms, the sea temperature in Halong Bay is:
Minimum: 81°F
Average: 84°F
Maximum: 87°F
Other useful seasonal weather averages in september:
- Outside temperature: 79°F to 88°F
- Most common weather: "Clear/Sunny"
- The wind blows at 16.2mph
- It rains a total of 11.7in, over 12 day(s).
Should we swim in Halong Bay in september?
Yes! The water temperature in Halong Bay in september is ideal
In september, swimming is ideal on the beaches around Halong Bay! With water reaching 87°F at most and 84°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 83°F, 11.7in of precipitation (over 12 days) and 84.14 % humidity.
Water and normal seasonal temperatures in Halong Bay in september
| September | |||
| Average sea temperature | 84°F | ||
| Minimum sea temperature | 81°F | ||
| Maximum sea temperature | 87°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 88°F | ||
| Minimum outside temperature | 79°F | ||
| Wind speed | 8.1mph | ||
| Wind temperature | 79°F | ||
| Precipitation | 11.7in | ||
| Number of days of rain | 12 jour(s) (42%) | ||
| Humidity | 85% | ||
| Visibility in kilometers | 9.14km | ||
| Cloud cover | 37% | ||
| Our opinion | ideal swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Halong Bay
Swim elsewhere in Vietnam in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Hoi An in september | 85°F | 87°F | ideal swimming | Nha Trang in september | 84°F | 86°F | ideal swimming | Phu Quoc island (Koh Trol) in september | 84°F | 86°F | ideal swimming | Da Nang in september | 84°F | 87°F | ideal swimming | Huế in september | 85°F | 88°F | ideal swimming | Phan Thiet in september | 83°F | 86°F | ideal swimming | Phan Rang Beach in september | 83°F | 86°F | ideal swimming |