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Surf Forecasts:
Atins surfForecast / Maranhao / Brazil
16 Day Weather and Surf, issued 8 pm Saturday 28 Mar 2026 -03Forecast update in hr min s Forecast update imminent
Atins surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Atins sea temperature is
28.9° C
(Which is slightly warmer than usual)Best Forecast Surf Conditions for Atins this week:
The surf forecast for Atins over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Mar 31) at 3AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.1m and 16s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Atins in the next 16 days are 1.0m 10s and forecast to arrive on Sunday (Mar 29) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Apr 05) at 12AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 31st Mar) | 3ft (0.9m) 7s |
| Best Surf | 3AM (Sun 5th Apr) | 3ft (0.9m) 11s |
| Most Powerful | 3PM (Sun 29th Mar) | 3.5ft (1.0m) 10s |
Table - best surf conditions forecast for Atins over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Heavy rain (total 50mm), heaviest during Sat night. Warm (max 28°C on Sun afternoon, min 24°C on Mon night). Wind will be generally light. | Days 3-6 Weather Summary Heavy rain (total 22mm), heaviest during Tue night. Warm (max 28°C on Wed afternoon, min 26°C on Tue night). Wind will be generally light. | |||||||||||||||||||||
Sunday 29 | Monday 30 | Tuesday 31 | Wednesday 01 | Thursday 02 | Friday 03 | Sat 04 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 10 | 7 | 10 | 9 | 8 | 8 | 7 | 7 | 7 | 8 | 8 | 13 | 13 | 12 | 15 | 15 | 6 | 7 | 7 | 8 | 12 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 234 | 96 | 196 | 111 | 87 | 85 | 72 | 61 | 62 | 74 | 55 | 32 | 57 | 48 | 41 | 109 | 39 | 77 | 71 | 76 | 73 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | off | cross- on | cross- off | cross- off | cross- on | cross | cross | cross | cross | cross | cross | cross | cross- off | cross- on | |
High Tide / height (m) | 2:31AM 2.36 | 2:44PM 2.63 | 3:17AM 2.56 | 3:30PM 2.77 | 3:55AM 2.72 | 4:10PM 2.86 | 4:29AM 2.83 | 4:46PM 2.89 | 5:01AM 2.89 | 5:19PM 2.86 | 5:31AM 2.89 | 5:52PM 2.77 | 6:01AM 2.84 | |||||||||
Low Tide / height (m) | 8:30AM 0.70 | 9:03PM 0.44 | 9:17AM 0.51 | 9:43PM 0.34 | 9:57AM 0.36 | 10:18PM 0.28 | 10:33AM 0.25 | 10:50PM 0.25 | 11:07AM 0.19 | 11:20PM 0.28 | 11:39AM 0.18 | 11:50PM 0.34 | 12:12PM 0.23 | |||||||||
Sunday 29 | Monday 30 | Tuesday 31 | Wednesday 01 | Thursday 02 | Friday 03 | Sat 04 | ||||||||||||||||
| Sunrise | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:50 | - | - | 5:50 | - | |
| Sunset | - | - | 5:58 | - | - | 5:58 | - | - | 5:57 | - | - | 5:57 | - | - | 5:55 | - | - | 5:55 | - | - | 5:55 | |
 |  | |  | | | | | | | |  | | | | | | | | | | ||
Rain (mm) | 15 | 8 | 1 | 5 | 6 | 1 | 8 | 3 | 3 | 8 | 1 | - | 3 | 5 | 1 | 2 | 2 | - | 3 | 2 | 1 | |
| Temp. °C | 27 | 27 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 27 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | |
| Feels °C (?) | 29 | 28 | 29 | 29 | 30 | 30 | 30 | 32 | 31 | 28 | 30 | 30 | 28 | 28 | 30 | 29 | 30 | 30 | 30 | 32 | 30 | |
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Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 Atins 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 Atins Surf forecast
The above surf forecast table for Atins provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Atins can be found by selecting the local surf guide option on the grey menu. Our Atins 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 (Atins) 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 Atins 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.
Are you planning a holiday in Maranhão? If you are looking for accommodation near Atins, camping, hotels and holiday cottages in Maranhão, consider staying in Barreirinhas which is 24 km (15 miles) away. Alternatively, find information about places to stay and car hire in Munguba which is 63 km (39 miles) away
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