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:
Salinas surfForecast / Rio Grande Do Sul / Brazil
48hr Weather and Surf, issued 2 am Tuesday 16 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Salinas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Salinas sea temperature is
23.1° C
(Which is normal for this time of year)How big are the waves at Salinas today?
The current surf forecast for Salinas at 7AM is: 0.7m 7s primary swell from a East-northeast direction and 0.5m 10s secondary swell from a Southeast direction (forecast issued at 02:00am December 16). An open ocean swell of 1.2m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 4.5ft (1.3m) | 6s |
| Afternoon (16 Dec) | 5.5ft (1.7m) | 6s |
| Evening (16 Dec) | 6ft (1.9m) | 8s |
Table - waves today at Salinas. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| 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) (?) | 7 | 10 | 10 | 6 | 6 | 6 | 7 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 10 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 63 | 47 | 48 | 117 | 123 | 225 | 557 | 398 | 526 | 390 | 354 | 334 | 375 | 327 | 288 | 282 | 194 | 148 | 113 | 65 | 48 | 44 | 46 | 94 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | glass | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 12:55AM 0.37 | 10:04AM 0.31 | 1:10AM 0.41 | 10:42AM 0.33 | 12:56AM 0.44 | 11:15AM 0.34 | ||||||||||||||||||
Low Tide / height (m) | 5:59AM 0.23 | 5:52PM 0.13 | 7:00AM 0.23 | 6:35PM 0.09 | 7:45AM 0.23 | 7:13PM 0.06 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| Sunrise | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:17 | - | - | - | - | - | - | - | 7:19 | - | - | - | - | - | - | - | 7:19 | - |
 |  |  |  | |  | |  | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 21 | 21 | 20 | 21 | 24 | 22 | 21 | 20 | 19 | 18 | 17 | 19 | 20 | 20 | 20 | 20 | 20 | 19 | 18 | 21 | 23 | 22 | 22 | 21 |
| Feels °C (?) | 23 | 20 | 19 | 19 | 21 | 15 | 16 | 17 | 17 | 17 | 16 | 19 | 18 | 17 | 18 | 17 | 16 | 15 | 15 | 19 | 21 | 19 | 20 | 18 |
- 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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