Swimming in Roseau in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Roseau in september 2025.
In september, according to seasonal norms, the sea temperature in Roseau is:
Minimum: 84°F
Average: 85°F
Maximum: 87°F
Other useful seasonal weather averages in september:
- Outside temperature: 83°F to 85°F
- Most common weather: "Clear/Sunny"
- The wind blows at 18mph
- It rains a total of 8.3in, over 10 day(s).
Should we swim in Roseau in september?
Yes! The water temperature in Roseau in september is ideal
In september, swimming is ideal on the beaches around Roseau! With water reaching 87°F at most and 85°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 84°F, 8.3in of precipitation (over 10 days) and 76.82 % humidity.
Water and normal seasonal temperatures in Roseau in september
| September | |||
| Average sea temperature | 85°F | ||
| Minimum sea temperature | 84°F | ||
| Maximum sea temperature | 87°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 86°F | ||
| Minimum outside temperature | 85°F | ||
| Wind speed | 13.7mph | ||
| Wind temperature | 85°F | ||
| Precipitation | 8.3in | ||
| Number of days of rain | 10 jour(s) (32%) | ||
| Humidity | 77% | ||
| Visibility in kilometers | 9.43km | ||
| Cloud cover | 36% | ||
| Our opinion | ideal swimming |