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:
Matanzas surfForecast / Santiago / Chile
48hr Weather and Surf, issued 8 pm Thursday 11 Dec 2025 -04Forecast update in hr min s Forecast update imminent
Matanzas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Matanzas sea temperature is
15.5° C
(Which is normal for this time of year)How big are the waves at Matanzas today?
The current surf forecast for Matanzas at 12AM is: 1.1m 11s primary swell from a Southwest direction and 0.8m 7s secondary swell from a Southwest direction (forecast issued at 08:00pm December 11). The wind direction is predicted to be cross-shore.
| Time (-04) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 3ft (0.9m) | 14s |
| Afternoon (12 Dec) | 5ft (1.6m) | 11s |
| Evening (12 Dec) | 2.5ft (0.7m) | 14s |
Table - waves today at Matanzas. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| 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 | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 15 | 11 | 11 | 11 | 11 | 14 | 14 | 11 | 11 | 14 | 11 | 11 | 11 | 11 | 11 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 339 | 304 | 273 | 278 | 241 | 301 | 239 | 564 | 617 | 215 | 215 | 191 | 220 | 254 | 299 | 1247 | 984 | 1053 | 1491 | 990 | 929 | 913 | 1476 | 1451 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 5:17PM 0.91 | 5:02AM 1.13 | 6:24PM 0.97 | 6:06AM 1.02 | 7:22PM 1.05 | 7:11AM 0.94 | ||||||||||||||||||
Low Tide / height (m) | 10:49PM 0.45 | 11:56AM 0.23 | 12:12AM 0.47 | 12:45PM 0.26 | 1:29AM 0.45 | 1:29PM 0.29 | ||||||||||||||||||
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - |
| Sunset | 8:51 | - | - | - | - | - | - | - | 8:52 | - | - | - | - | - | - | - | 8:52 | - | - | - | - | - | - | - |
 |  |  | | |  | | | | | | | | | |  | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 15 | 14 | 13 | 13 | 15 | 17 | 18 | 17 | 15 | 14 | 14 | 14 | 16 | 18 | 18 | 17 | 15 | 14 | 14 | 13 | 14 | 16 | 17 |
| Feels °C (?) | 14 | 13 | 12 | 11 | 11 | 14 | 15 | 14 | 13 | 13 | 12 | 12 | 12 | 15 | 15 | 13 | 12 | 11 | 9 | 8 | 8 | 11 | 12 | 11 |
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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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