Swimming in Saint Martin in september 2025 Sea temperature by city in september
Do you want to go to the beach in Saint Martin in september 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in september in Saint Martin by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Saint Martin in september 2025
Here, find the average sea temperature in Saint Martin in september in several coastal cities.
85°F
min: 83°F / max: 87°F
anse-Marcel
85°F
min: 83°F / max: 87°F
baie-de-Lucas
85°F
min: 83°F / max: 87°F
baie-Nettlé
85°F
min: 84°F / max: 87°F
Where should you go swimming in Saint Martin in the month of september?
Swimming in Saint Martin in september is ideal
In september in Saint Martin swimming conditions are generally the same everywhere.
In september in Marigot (Saint-Martin), anse-Marcel, baie-de-Lucas and baie-Nettlé, swimming conditions are perfect! With water reaching a maximum of 87°F and an average of 85°F, going in the water (and staying there!) feels great.
Where to go swimming in Saint Martin in september: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in september
Marigot (Saint-Martin)
| September | |||
| Average sea temperature | 85°F | ||
| Minimum sea temperature | 83°F | ||
| Maximum sea temperature | 87°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 85°F | ||
| Precipitation | 8.3in | ||
| Number of days of precipitation | 11 jour(s) (38%) | ||
| Cloud cover | 39% | ||
| Our opinion | ideal swimming |
More information on swimming in Marigot (Saint-Martin) in september
Anse-Marcel
| September | |||
| Average sea temperature | 85°F | ||
| Minimum sea temperature | 83°F | ||
| Maximum sea temperature | 87°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 85°F | ||
| Precipitation | 8.3in | ||
| Number of days of precipitation | 11 jour(s) (38%) | ||
| Cloud cover | 39% | ||
| Our opinion | ideal swimming |
Baie-de-Lucas
| September | |||
| Average sea temperature | 85°F | ||
| Minimum sea temperature | 83°F | ||
| Maximum sea temperature | 87°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 85°F | ||
| Precipitation | 8.3in | ||
| Number of days of precipitation | 11 jour(s) (38%) | ||
| Cloud cover | 39% | ||
| Our opinion | ideal swimming |
Baie-Nettlé
| September | |||
| Average sea temperature | 85°F | ||
| Minimum sea temperature | 84°F | ||
| Maximum sea temperature | 87°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 85°F | ||
| Precipitation | 8.3in | ||
| Number of days of precipitation | 11 jour(s) (38%) | ||
| Cloud cover | 40% | ||
| Our opinion | ideal swimming |
List of coastal cities in Saint Martin
| Marigot (Saint-Martin) in september | ideal swimming |
| anse-Marcel in september | ideal swimming |
| baie-de-Lucas in september | ideal swimming |
| baie-Nettlé in september | ideal swimming |