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:
Prainha surfForecast / Santa Catarina – Norte / Brazil
48hr Weather and Surf, issued 8 am Sunday 14 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Prainha surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Prainha sea temperature is
24.1° C
(Which is normal for this time of year)How big are the waves at Prainha today?
The current surf forecast for Prainha at 10AM is: 0.9m 9s primary swell from a South-southeast direction and 0.8m 6s secondary swell from a East-southeast direction (forecast issued at 08:00am December 14). The wind direction is predicted to be cross-shore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 3ft (0.9m) | 9s |
| Afternoon (14 Dec) | 2.5ft (0.8m) | 9s |
| Evening (14 Dec) | 2.5ft (0.8m) | 9s |
Table - waves today at Prainha. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | Wed 17 | |||||||||||||||||||||
| 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) (?) | 10 | 9 | 9 | 9 | 9 | 9 | 7 | 8 | 8 | 8 | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 10 | 6 | 7 | 8 | 8 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 142 | 139 | 113 | 110 | 108 | 110 | 78 | 89 | 52 | 43 | 100 | 98 | 73 | 58 | 58 | 58 | 45 | 166 | 365 | 895 | 1075 | 940 | 607 | 426 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross- on | cross- on | cross- on | glass | glass | glass | glass | cross- on | on | on | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off |
High Tide / height (m) | 10:30AM 0.65 | 11:00PM 0.71 | 11:13AM 0.68 | 11:57PM 0.77 | 11:51AM 0.71 | 12:41AM 0.83 | ||||||||||||||||||
Low Tide / height (m) | 4:42AM 0.36 | 5:03PM 0.36 | 5:35AM 0.36 | 5:41PM 0.28 | 6:23AM 0.35 | 6:16PM 0.21 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wed 17 | |||||||||||||||||||||
| Sunrise | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 7:04 | - | - | - | - | - | - | - | 7:04 | - | - | - | - | - | - | - | 7:05 | - | - | - |
 |  | | | |  | |  | | | | | |  |  |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 9 | - | - | - | - | - | - | - | - | - |
| Temp. °C | 22 | 24 | 26 | 25 | 24 | 23 | 22 | 22 | 22 | 25 | 27 | 27 | 25 | 23 | 23 | 23 | 23 | 25 | 26 | 23 | 22 | 21 | 20 | 19 |
| Feels °C (?) | 25 | 27 | 27 | 26 | 26 | 27 | 26 | 26 | 26 | 27 | 28 | 28 | 28 | 26 | 26 | 27 | 27 | 26 | 25 | 20 | 18 | 18 | 18 | 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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