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:
Praia do Aventureiro surfForecast / São Paulo / Brazil
48hr Weather and Surf, issued 2 am Saturday 13 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Praia do Aventureiro surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Praia do Aventureiro sea temperature is
25.0° C
(Which is slightly warmer than usual)How big are the waves at Praia do Aventureiro today?
The current surf forecast for Praia do Aventureiro at 5AM is: 1.3m 11s primary swell from a South direction and 0.5m 5s secondary swell from a East direction (forecast issued at 02:00am December 13). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 4ft (1.2m) | 10s |
| Afternoon (13 Dec) | 3.5ft (1.1m) | 10s |
| Evening (13 Dec) | 3.5ft (1.0m) | 10s |
Table - waves today at Praia do Aventureiro. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| 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) | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 475 | 396 | 381 | 296 | 290 | 244 | 242 | 200 | 162 | 164 | 130 | 127 | 127 | 127 | 98 | 71 | 67 | 64 | 64 | 63 | 40 | 39 | 26 | 55 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | glass | glass | cross- off | cross- on | cross | cross- on | cross- off | glass | glass | cross- on | on | on | cross- on | cross | glass | glass | glass | cross- on | cross- off | cross- off | cross- on |
High Tide / height (m) | 10:32AM 0.77 | 10:18PM 0.81 | 11:11AM 0.81 | 11:40PM 0.87 | 11:47AM 0.84 | |||||||||||||||||||
Low Tide / height (m) | 3:53AM 0.38 | 4:26PM 0.48 | 4:58AM 0.40 | 5:24PM 0.39 | 5:57AM 0.39 | 6:13PM 0.30 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| Sunrise | - | - | 5:03 | - | - | - | - | - | - | - | 5:05 | - | - | - | - | - | - | - | 5:05 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - |
 |  |  | |  | | |  | | | | | |  | | | | |  | | |  | |  | |
Rain (mm) | - | - | - | - | 1 | 1 | 2 | 3 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 6 | 2 |
| Temp. °C | 25 | 25 | 24 | 24 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 26 | 27 | 26 | 27 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 24 | 25 |
| Feels °C (?) | 26 | 26 | 25 | 26 | 29 | 27 | 26 | 27 | 26 | 26 | 29 | 30 | 29 | 28 | 30 | 27 | 28 | 29 | 28 | 29 | 28 | 30 | 27 | 29 |
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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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