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:
Santa Clara del Mar surfForecast / Buenos Aires / Argentina
48hr Weather and Surf, issued 2 pm Saturday 13 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Santa Clara del Mar surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Santa Clara del Mar sea temperature is
19.6° C
(Which is 3.1°C warmer than normal for this time of year)How big are the waves at Santa Clara del Mar today?
The current surf forecast for Santa Clara del Mar at 7PM is: 0.7m 10s primary swell from a East-southeast direction and 0.4m 11s secondary swell from a Southeast direction, 0.6m 9s secondary swell from a South direction (forecast issued at 02:00pm December 13). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | - | - |
| Afternoon (13 Dec) | 2.5ft (0.7m) | 10s |
| Evening (13 Dec) | 2.5ft (0.7m) | 10s |
Table - waves today at Santa Clara del Mar. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| 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) (?) | 10 | 10 | 10 | 10 | 10 | 9 | 8 | 8 | 10 | 9 | 9 | 9 | 12 | 12 | 11 | 11 | 10 | 6 | 7 | 8 | 8 | 8 | 8 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 133 | 102 | 98 | 98 | 72 | 69 | 51 | 45 | 67 | 64 | 59 | 58 | 49 | 44 | 87 | 143 | 255 | 229 | 431 | 345 | 294 | 418 | 234 | 394 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | off | cross- on | on | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | glass | cross- off | off | off | cross- off | cross | cross | cross | cross | cross- off | cross | cross |
High Tide / height (m) | 2:56PM 1.01 | 3:47AM 0.84 | 4:06PM 0.94 | 4:33AM 0.89 | 5:09PM 0.89 | 5:11AM 0.94 | ||||||||||||||||||
Low Tide / height (m) | 9:31PM 0.32 | 9:32AM 0.37 | 10:06PM 0.38 | 10:26AM 0.35 | 10:38PM 0.43 | |||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:22 | - |
| Sunset | - | - | 8:06 | - | - | - | - | - | - | - | 8:07 | - | - | - | - | - | - | - | 8:07 | - | - | - | - | - |
 | | |  | |  | |  | |  | | | |  |  |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | 1 | - | 1 | - | 1 | 2 | 5 | - | - | - | - | - | - | - | - | - | - | 1 | - |
| Temp. °C | 27 | 22 | 21 | 18 | 17 | 16 | 16 | 18 | 18 | 18 | 16 | 15 | 15 | 14 | 14 | 20 | 24 | 22 | 18 | 16 | 15 | 13 | 13 | 15 |
| Feels °C (?) | 21 | 20 | 19 | 14 | 15 | 15 | 15 | 17 | 16 | 16 | 14 | 16 | 15 | 12 | 11 | 15 | 17 | 14 | 10 | 10 | 10 | 9 | 9 | 9 |
- 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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