Praia do Calhau surfForecast / Maranhao / Brazil

information circle12 Day Weather and Surf, issued 8 pm Monday 21 Jul 2025 -03
Forecast update in hr  min  s Forecast update imminent
Praia do Calhau surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Praia do Calhau sea temperature is
28.7° C
(Which is 1.5°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Praia do Calhau this week:

The most powerful waves expected at Praia do Calhau in the next 12 days are 1.4m 5s and forecast to arrive on Saturday (Jul 26) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 9AM (Sat 26th Jul)4.5ft (1.4m) 5s

Table - best surf conditions forecast for Praia do Calhau over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 4mm), mostly falling on Mon night. Warm (max 29°C on Thu morning, min 26°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Fri morning. Warm (max 29°C on Sat morning, min 26°C on Thu night). Wind will be generally light.

Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Mon
28
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.1
NE
0.9
ENE
1
ENE
0.9
NE
1.2
ENE
1
ENE
1.1
NE
1.3
ENE
1
ENE
1.1
NE
1.2
ENE
1.2
ENE
1.1
NE
1.4
ENE
1.2
ENE
1.1
NE
1.2
ENE
1
ENE
0.9
NE
0.9
ENE
0.9
ENE
Period(s) (?)555657557555555556445
Wave
Graph
(?)Metric surfscale
Energy (?)5341485462835478855577675710374577270293439
Wind
(km/h)
20
NE
20
ENE
20
ENE
20
ENE
20
E
25
NE
20
ENE
25
E
25
NE
25
ENE
25
ENE
20
NE
25
NE
25
E
25
NE
20
NE
20
E
30
NE
25
NE
25
ENE
30
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
on
cross-
on
crosscross-
on
cross-
on
crosscross-
on
cross-
on
crosscross-
on
cross-
on
crosscross-
on
cross-
on
crosscross-
on
cross-
on
crosscross-
on
High Tide
/ height (m)
4:56AM
4.86
5:42PM
4.56
5:56AM
5.00
6:36PM
4.72
6:49AM
5.16
7:24PM
4.87
7:37AM
5.28
8:07PM
4.99
8:20AM
5.34
8:46PM
5.07
9:01AM
5.34
9:23PM
5.09
9:39AM
5.27
Low Tide
/ height (m)
10:38PM
1.28
11:22AM
0.77
11:40PM
1.16
12:19PM
0.62
12:35AM
0.98
1:09PM
0.49
1:23AM
0.81
1:53PM
0.41
2:06AM
0.67
2:34PM
0.38
2:47AM
0.59
3:12PM
0.42
3:26AM
0.56
3:49PM
0.51
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Mon
28
Sunrise-6:03--6:03--6:03--6:03--6:03--6:03--6:03-
Sunset--6:02--6:02--6:02--6:02--6:02--6:02--6:02
thunderstorm thunderstorm thunderstorm clearthunderstorm clearclearclearclearrain showersthunderstorm thunderstorm part cloudpart cloudclearpart cloudpart cloudclearpart cloudpart cloudclear
Rain (mm)
111-1----131---------
Temp. °C272727262828262927262827262927272928262827
Feels °C (?)302828282928272926262928262826272927262826
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for Maranhao

  1. weather stationWind Update Continuing clean conditions at Praia do Calhau (calm at São Luís 9 km from Praia do Calhau). 1.1m 4s local chop from the NE

    Praia do Calhau
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2 h 43 min ago

4 km/h
WNW
Clean
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Praia do Calhau surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Information about the Praia do Calhau Surf forecast

The above surf forecast table for Praia do Calhau provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Praia do Calhau can be found by selecting the local surf guide option on the grey menu. Our Praia do Calhau surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Praia do Calhau) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Praia do Calhau may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Praia do Calhau is 14 km (9 miles) from the city of Itaqui. If you plan a holiday in Maranhão, look for hotels and other accommodation in Itaqui. Itaqui has rooms for a wide range of budgets as well as car hire and transport links.

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