ariasurf

Praia do Calhau

São Luís, Brasil

Right now

Conditions at 4:00 PM Brasilia Standard Time.

Poor

Ankle-high (0.4 m) at 6 s, heading toward WSW, with strong cross-onshore wind toward SW.

Swell

0.4 m

WSW

6 s

Wind

21 km/h

Cross-onshore

Tide

2.3 m

Falling

Weather

29 °C

Clear

29 °C water

7-day forecast

Wave height and the best conditions expected each day.

Hourly forecast

Saturday, September 19, 2026

Time	Rating	Swell	Swell direction	Wind	Wind direction	Tide	Weather
12 AM	Poor	0.3 m · 7 s	WSW	19 km/h · 39 km/h gusts	WSW Onshore	3.6 m	Mostly clear · 27 °C
1 AM	Poor	0.3 m · 6 s	WSW	19 km/h · 39 km/h gusts	WSW Onshore	3.3 m	Mostly clear · 27 °C
2 AM	Poor	0.4 m · 6 s	WSW	20 km/h · 39 km/h gusts	WSW Onshore	2.9 m	Mostly clear · 26 °C
3 AM	Poor	0.4 m · 6 s	WSW	18 km/h · 38 km/h gusts	WSW Onshore	2.4 m	Overcast · 26 °C
4 AM	Poor	0.4 m · 6 s	WSW	18 km/h · 37 km/h gusts	WSW Cross-shore	1.9 m	Partly cloudy · 26 °C
5 AM	Poor	0.4 m · 6 s	SW	16 km/h · 34 km/h gusts	W Cross-shore	1.5 m	Mostly clear · 26 °C
6 AM	Poor	0.5 m · 5 s	SW	16 km/h · 33 km/h gusts	W Cross-shore	1.3 m	Clear · 26 °C
7 AM	Poor	0.5 m · 5 s	SW	18 km/h · 39 km/h gusts	W Cross-shore	1.5 m	Mostly clear · 27 °C
8 AM	Poor	0.5 m · 5 s	SW	20 km/h · 46 km/h gusts	WNW Cross-shore	2 m	Mostly clear · 28 °C
9 AM	Poor	0.5 m · 5 s	WSW	20 km/h · 47 km/h gusts	W Cross-shore	2.6 m	Clear · 30 °C
10 AM	Poor	0.5 m · 6 s	WSW	20 km/h · 52 km/h gusts	W Cross-shore	2.9 m	Light drizzle · 31 °C
11 AM	Poor	0.5 m · 6 s	WSW	20 km/h · 50 km/h gusts	W Cross-shore	3.1 m	Light drizzle · 32 °C
12 PM	Poor	0.5 m · 6 s	WSW	18 km/h · 46 km/h gusts	WSW Onshore	3.3 m	Mostly clear · 32 °C
1 PM	Poor	0.5 m · 6 s	WSW	20 km/h · 48 km/h gusts	WSW Onshore	3.3 m	Drizzle · 31 °C
2 PM	Poor	0.4 m · 6 s	WSW	20 km/h · 49 km/h gusts	SW Onshore	3.1 m	Light drizzle · 31 °C
3 PM	Poor	0.4 m · 6 s	WSW	20 km/h · 46 km/h gusts	SW Onshore	2.7 m	Clear · 30 °C
4 PM	Poor	0.4 m · 6 s	WSW	21 km/h · 48 km/h gusts	SW Onshore	2.3 m	Clear · 29 °C
5 PM	Poor	0.5 m · 6 s	WSW	20 km/h · 48 km/h gusts	SW Onshore	1.9 m	Clear · 28 °C
6 PM	Poor	0.5 m · 6 s	WSW	17 km/h · 44 km/h gusts	SW Onshore	1.6 m	Clear · 28 °C
7 PM	Poor	0.5 m · 6 s	WSW	17 km/h · 38 km/h gusts	WSW Onshore	1.7 m	Clear · 27 °C
8 PM	Poor	0.5 m · 6 s	WSW	18 km/h · 36 km/h gusts	WSW Onshore	2 m	Clear · 27 °C
9 PM	Poor	0.5 m · 6 s	WSW	18 km/h · 37 km/h gusts	WSW Onshore	2.6 m	Clear · 27 °C
10 PM	Poor	0.4 m · 6 s	WSW	19 km/h · 37 km/h gusts	WSW Onshore	3 m	Clear · 27 °C
11 PM	Poor	0.4 m · 6 s	WSW	19 km/h · 38 km/h gusts	WSW Onshore	3.3 m	Mostly clear · 27 °C