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Surf Forecasts:
Maresias surfForecast / São Paulo / Brazil
48hr Weather and Surf, issued 2 am Thursday 18 Sep 2025 -03
How big are the waves at Maresias today?
The current surf forecast for Maresias at 6AM is: 2.1m 11s primary swell from a Southeast direction (forecast issued at 02:00am September 18). An open ocean swell of 0.5m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 7ft (2.1m) | 11s |
| Afternoon (18 Sep) | 6ft (1.8m) | 10s |
| Evening (18 Sep) | 5ft (1.6m) | 10s |
Table - waves today at Maresias. (Swell directed towards the surf break)
Thursday 18 | Friday 19 | Saturday 20 | ||||||||||||||||||||||
| 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 11 | 11 | 10 | 10 | 11 | 10 | 10 | 9 | 8 | 8 | 10 | 10 | 8 | 8 | 8 | 9 | 9 | 9 | 15 | 14 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 722 | 1082 | 1106 | 1015 | 859 | 676 | 635 | 551 | 399 | 321 | 232 | 181 | 216 | 173 | 110 | 135 | 172 | 417 | 495 | 442 | 4 | 15 | 14 | 31 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross- off | cross | cross- on | cross- on | cross | cross- off | off | cross- off | cross- off | glass | on | cross- on | cross- off | off | cross | glass | cross- off | glass | on | cross- on | cross- off | cross- off |
High Tide / height (m) | 1:48PM 1.05 | 1:00AM 0.98 | 2:00PM 1.08 | 1:26AM 1.09 | 2:13PM 1.11 | |||||||||||||||||||
Low Tide / height (m) | 6:53AM 0.12 | 7:27PM 0.41 | 7:29AM 0.05 | 7:50PM 0.33 | 8:00AM 0.01 | 8:12PM 0.27 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | ||||||||||||||||||||||
| Sunrise | - | - | 5:56 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - |
| Sunset | - | - | - | - | - | 5:55 | - | - | - | - | - | - | - | 5:57 | - | - | - | - | - | - | - | 5:57 | - | - |
 | |  | |  | |  | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 20 | 18 | 18 | 21 | 23 | 22 | 19 | 19 | 18 | 18 | 18 | 23 | 24 | 24 | 21 | 20 | 20 | 21 | 21 | 26 | 27 | 27 | 24 | 24 |
| Feels °C (?) | 22 | 19 | 19 | 21 | 23 | 22 | 20 | 20 | 19 | 19 | 19 | 25 | 25 | 25 | 22 | 22 | 21 | 23 | 22 | 28 | 29 | 29 | 26 | 25 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for São Paulo
Continuing clean conditions at Maresias (light winds from the SE at Sao Jose Dos Cam Airport 74 km from Maresias). A 2.3m groundswell from the SE
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 Maresias 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.
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