Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
Tramandai surfForecast / Rio Grande Do Sul / Brazil
48hr Weather and Surf, issued 2 pm Wednesday 10 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Tramandai surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tramandai sea temperature is
23.3° C
(Which is slightly warmer than usual)How big are the waves at Tramandai today?
The current surf forecast for Tramandai at 8PM is: 4.0m 11s primary swell from a South direction and 1.0m 10s secondary swell from a East-northeast direction, 0.9m 11s secondary swell from a East-southeast direction (forecast issued at 02:00pm December 10). The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Dec) | - | - |
| Afternoon (10 Dec) | 10ft (3.0m) | 8s |
| Evening (10 Dec) | 13ft (4.0m) | 11s |
Table - waves today at Tramandai. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 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 | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 8 | 10 | 11 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 790 | 893 | 2927 | 4010 | 4889 | 6898 | 6208 | 3234 | 3062 | 3615 | 2814 | 1796 | 1421 | 1194 | 1080 | 823 | 653 | 578 | 510 | 419 | 363 | 307 | 258 | 231 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | glass | off | off | off | glass | cross- on | cross | cross- off | cross- off | off | off | glass |
High Tide / height (m) | 10:04AM 0.46 | 2:57PM 0.51 | 9:46PM 0.15 | 4:11AM 0.29 | 10:49AM 0.42 | 3:46PM 0.46 | 10:29PM 0.19 | 4:56AM 0.29 | 11:27AM 0.38 | 4:39PM 0.40 | 11:12PM 0.23 | 5:49AM 0.28 | ||||||||||||
Low Tide / height (m) | 12:14PM 0.41 | 7:33PM 0.10 | 12:24AM 0.08 | 6:53AM 0.19 | 12:57PM 0.38 | 8:15PM 0.15 | 1:15AM 0.12 | 7:39AM 0.21 | 1:50PM 0.33 | 8:52PM 0.19 | 2:11AM 0.16 | 8:24AM 0.23 | ||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:11 | - | - | - | - | - | - | - | 5:11 | - | - | - | - | - | - | - | 5:11 | - |
| Sunset | - | - | 7:14 | - | - | - | - | - | - | - | 7:15 | - | - | - | - | - | - | - | 7:15 | - | - | - | - | - |
 | | |  | | |  |  |  | | |  | | | | | |  | |  | |  | | | |
Rain (mm) | 1 | 1 | 2 | 2 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | 1 | 2 | 1 | - | - | - | - |
| Temp. °C | 21 | 21 | 19 | 19 | 19 | 19 | 19 | 21 | 25 | 27 | 25 | 21 | 21 | 20 | 20 | 25 | 26 | 25 | 22 | 22 | 22 | 21 | 21 | 25 |
| Feels °C (?) | 17 | 16 | 13 | 12 | 13 | 12 | 13 | 16 | 20 | 22 | 23 | 21 | 22 | 20 | 20 | 26 | 28 | 25 | 22 | 23 | 23 | 22 | 23 | 27 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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