Praia de São Marcos
Maranhão · Brazil
Rating right now
Praia de São Marcos is a NE-facing sand beach on the Coastal Waters coastline near Maranhão — it picks up N–E swell and turns cleanest in a S–W wind, with the most consistent surf through year-round.
10-day forecast
Local time · updates hourly
Wave height & period
Wind
| Time | Rating | Waves | Swell | Wind | Air |
|---|---|---|---|---|---|
Water temperature by month
This month: ~27.8°C (82°F) on average
Jan
28.3°C
82.9°F · 26.6–29.2°C
Feb
28.5°C
83.3°F · 27.8–29.2°C
Mar
28.7°C
83.7°F · 27.7–29.5°C
Apr
29°C
84.2°F · 28.4–30.1°C
May
29°C
84.2°F · 27.6–30°C
Jun
28.8°C
83.8°F · 27–29.7°C
Jul
28.6°C
83.5°F · 27.4–29.6°C
Aug
28.3°C
82.9°F · 27.2–29.2°C
Sep
27.8°C
82°F · 27–28.5°C
Oct
27.8°C
82°F · 26.7–28.5°C
Nov
28°C
82.4°F · 27–28.8°C
Dec
28.2°C
82.8°F · 27.4–29.1°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
N–E
Best wind
S–W
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. Sharks are part of the ecosystem here — avoid dawn, dusk and murky rivermouth water.
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