Baie de Grand-Case
St. Martin · Saint Martin
Rating right now
A year-round beach on the Caribbean Sea near St. Martin, Baie de Grand-Case is exposed to N swell — NW–NE on the forecast is when it lights up, ideally with a SE–SW wind.
10-day forecast
Local time · updates hourly
Wave height & period
Wind
| Time | Rating | Waves | Swell | Wind | Air |
|---|---|---|---|---|---|
Water temperature by month
This month: ~29°C (84.2°F) on average
Jan
26.5°C
79.7°F · 25.4–27.5°C
Feb
26.3°C
79.3°F · 25.4–27°C
Mar
26.2°C
79.2°F · 25–27.3°C
Apr
26.7°C
80.1°F · 25.9–27.8°C
May
27.4°C
81.3°F · 25.9–28.7°C
Jun
28.1°C
82.6°F · 26.8–29.3°C
Jul
28.3°C
82.9°F · 27.1–29.7°C
Aug
28.8°C
83.8°F · 28–30°C
Sep
29°C
84.2°F · 28–30°C
Oct
29°C
84.2°F · 28–30.7°C
Nov
28.4°C
83.1°F · 27.7–29.7°C
Dec
27.4°C
81.3°F · 26.7–28.9°C
25-year monthly averages from the NOAA OISST satellite record — typical range min–max, not a live reading.
Know before you go
Best swell
NW–NE
Best wind
SE–SW
Break type
Beach break
Best season
Year-round
Safety: Friendly by surf standards, but rip currents and drop-in etiquette still apply. Shifting sandbars create moving rip currents — learn to spot them and use them to get out back.
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