Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Maresias surfForecast / São Paulo / Brazil
48hr Weather and Surf, issued 8 am Wednesday 17 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Maresias surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Maresias sea temperature is
25.0° C
(Which is normal for this time of year)How big are the waves at Maresias today?
The current surf forecast for Maresias at 1PM is: 1.4m 8s primary swell from a South-southwest direction and 1.3m 8s secondary swell from a South-southeast direction (forecast issued at 08:00am December 17). The wind direction is predicted to be onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 5ft (1.5m) | 8s |
| Afternoon (17 Dec) | 4.5ft (1.4m) | 8s |
| Evening (17 Dec) | 4.5ft (1.3m) | 8s |
Table - waves today at Maresias. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| 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 | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 8 | 10 | 5 | 5 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 247 | 284 | 244 | 250 | 240 | 246 | 212 | 180 | 173 | 190 | 176 | 260 | 230 | 183 | 139 | 133 | 103 | 101 | 73 | 69 | 51 | 51 | 60 | 54 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | cross- on | cross | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 12:59PM 0.89 | 1:53AM 1.05 | 1:29PM 0.92 | 2:24AM 1.08 | 1:57PM 0.96 | 2:54AM 1.10 | ||||||||||||||||||
Low Tide / height (m) | 7:20AM 0.36 | 7:20PM 0.16 | 7:59AM 0.35 | 7:57PM 0.10 | 8:35AM 0.34 | 8:34PM 0.06 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| Sunrise | 5:09 | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:46 | - | - | - |
 |  | | |  |  | | |  | | | | | | | | | | | | | | | | |
Rain (mm) | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 22 | 23 | 23 | 22 | 21 | 21 | 20 | 20 | 20 | 22 | 24 | 24 | 22 | 21 | 21 | 21 | 22 | 24 | 25 | 24 | 23 | 22 | 22 | 21 |
| Feels °C (?) | 23 | 25 | 24 | 23 | 22 | 22 | 21 | 22 | 21 | 23 | 25 | 25 | 23 | 22 | 23 | 23 | 25 | 27 | 28 | 26 | 25 | 24 | 24 | 23 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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