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Surf Forecasts:
Praia do Calhau surfForecast / Maranhao / Brazil
16 Day Weather and Surf, issued 8 am Sunday 10 May 2026 -03Forecast 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
29.0° C
(Which is slightly warmer than usual)Best Forecast Surf Conditions for Praia do Calhau this week:
The surf forecast for Praia do Calhau over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (May 12) at 6AM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.5m and 4s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Praia do Calhau in the next 16 days are 1.2m 8s and forecast to arrive on Thursday (May 14) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Monday (May 11) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 12th May) | 2ft (0.6m) 8s |
| Best Surf | 6AM (Tue 12th May) | 2ft (0.6m) 8s |
| Most Powerful | 6PM (Thu 14th May) | 4ft (1.2m) 8s |
Table - best surf conditions forecast for Praia do Calhau over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 44mm), heaviest during Sun morning. Warm (max 28°C on Sun morning, min 25°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 68mm), heaviest during Wed night. Warm (max 28°C on Wed morning, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 10 | Monday 11 | Tuesday 12 | Wednesday 13 | Thursday 14 | Friday 15 | Saturday 16 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
NE 6 | NE 6 | NE 6 | NE 6 | NE 9 | NNE 8 | NE 8 | NE 8 | ENE 5 | NE 8 | NE 8 | ENE 6 | ENE 4 | NE 7 | ENE 5 | NE 8 | NE 8 | NE 8 | NE 8 | NNE 8 | NE 9 | |
12 | 8 | 11 | 12 | 27 | 43 | 31 | 101 | 39 | 113 | 86 | 148 | 47 | 119 | 54 | 153 | 156 | 102 | 105 | 102 | 39 | |
Wind (km/h) | |||||||||||||||||||||
cross | cross | cross | cross-off | cross-on | cross | cross | cross-on | cross-on | cross | cross | cross | cross-off | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | |
High Tide | 1:46PM4.20m | 2:36AM4.22m | 3:02PM4.38m | 3:39AM4.54m | 4:04PM4.68m | 4:31AM4.93m | 4:57PM5.00m | 5:17AM5.30m | 5:45PM5.28m | 6:01AM5.61m | 6:30PM5.47m | 6:43AM5.82m | 7:15PM5.53m | ||||||||
Low Tide | 8:10PM1.39m | 8:45AM1.50m | 9:18PM1.19m | 9:49AM1.12m | 10:14PM0.92m | 10:42AM0.69m | 11:03PM0.64m | 11:30AM0.28m | 11:48PM0.42m | 12:15PM-0.03m | 00:31AM0.28m | 12:59PM-0.22m | 1:14AM0.25m | ||||||||
 | |  |  | | | | | | | | | | | | | | | | | | |
 | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — |
9 | 9 | 13 | — | — | 9 | — | 2 | 2 | 4 | 10 | 24 | 6 | 4 | 9 | 2 | 2 | 7 | 5 | 3 | 7 | |
Temp °C | 28 | 27 | 26 | 28 | 27 | 27 | 28 | 28 | 27 | 28 | 27 | 27 | 26 | 28 | 26 | 28 | 28 | 27 | 27 | 27 | 27 |
30 | 30 | 30 | 31 | 29 | 29 | 30 | 30 | 29 | 30 | 28 | 29 | 29 | 30 | 28 | 30 | 29 | 30 | 29 | 28 | 30 | |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 6 | NE 6 | NE 6 | NE 9 | NNE 8 | NE 8 | — | NE 8 | NE 8 | N 15 | — | NE 14 | NE 15 | NE 8 | — | — | — | NE 8 | NNE 8 | NE 9 |
 kJ | 12 | 8 | 11 | 12 | 27 | 43 | 31 | — | 29 | 2 | 4 | — | 8 | 8 | 54 | — | — | — | 105 | 82 | 36 |
Swell 2 Height (m) Direction Period (s) | NE 9 | NE 11 | NE 10 | NE 10 | — | — | — | — | — | — | — | NNE 8 | — | — | NE 14 | — | — | — | — | — | — |
| kJ | 3 | 5 | 4 | 4 | — | — | — | — | — | — | — | 26 | — | — | 7 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | N 11 | — | — | — | — | — | — | — | — | — | N 16 | — | — | — | — | — | — | — | — | — |
| kJ | — | 2 | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | ENE 3 | — | ESE 3 | N 9 | ENE 3 | ENE 4 | NE 8 | ENE 5 | NE 8 | NE 8 | ENE 6 | ENE 4 | NE 7 | ENE 5 | NE 8 | NE 8 | NE 8 | — | NE 8 | ENE 5 |
| kJ | — | 4 | — | 1 | 2 | 4 | 15 | 101 | 39 | 113 | 86 | 148 | 47 | 119 | 48 | 153 | 156 | 102 | — | 102 | 39 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1114 | 1326 | 609 | 173 | 2285 | 1025 | 1114 | 2270 | 658 | 590 | 1966 | 590 | 0 | 3 | 3 | 590 | 1104 | 978 | 647 | 2274 | 1025 |
Best forecast wave conditions in Maranhão | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 16 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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