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 am Wednesday 17 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
23.1° C
(Which is normal for this time of year)How big are the waves at Tramandai today?
The current surf forecast for Tramandai at 9AM is: 1.6m 9s primary swell from a South direction and 0.3m 9s secondary swell from a Southeast direction (forecast issued at 02:00am December 17). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 5ft (1.6m) | 9s |
| Afternoon (17 Dec) | 4.5ft (1.4m) | 9s |
| Evening (17 Dec) | 4ft (1.2m) | 9s |
Table - waves today at Tramandai. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| 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) (?) | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 10 | 5 | 6 | 9 | 9 | 7 | 7 | 6 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 354 | 660 | 371 | 398 | 357 | 320 | 282 | 235 | 189 | 142 | 109 | 84 | 64 | 45 | 46 | 61 | 124 | 26 | 24 | 150 | 116 | 106 | 123 | 222 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | cross- off | on | on | on | cross- on | cross- on | cross | cross | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 10:38AM 0.31 | 1:13AM 0.42 | 11:11AM 0.33 | 1:15AM 0.43 | 11:43AM 0.35 | |||||||||||||||||||
Low Tide / height (m) | 7:02AM 0.23 | 6:35PM 0.09 | 7:47AM 0.23 | 7:13PM 0.06 | 8:24AM 0.24 | 7:51PM 0.03 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| Sunrise | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:17 | - | - | - | - | - | - | - | 7:19 | - | - | - | - | - | - | - | 7:20 | - |
 | |  | | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 18 | 17 | 20 | 21 | 21 | 20 | 19 | 19 | 18 | 17 | 21 | 23 | 23 | 22 | 21 | 21 | 20 | 19 | 23 | 25 | 24 | 23 | 22 |
| Feels °C (?) | 17 | 17 | 16 | 19 | 19 | 18 | 18 | 16 | 15 | 15 | 14 | 19 | 21 | 21 | 20 | 19 | 19 | 19 | 18 | 23 | 25 | 23 | 22 | 19 |
- Map Icons:
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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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