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 2 pm Saturday 13 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
14.9° C
(Which is slightly cooler than normal)How big are the waves at Matanzas today?
The current surf forecast for Matanzas at 7PM is: 2.1m 13s primary swell from a Southwest direction and 0.5m 13s secondary swell from a West-northwest direction (forecast issued at 02:00pm December 13). The wind direction is predicted to be cross-onshore.
| Time (-04) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | - | - |
| Afternoon (13 Dec) | 6ft (1.8m) | 13s |
| Evening (13 Dec) | 6ft (1.8m) | 13s |
Table - waves today at Matanzas. (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) (?) | 11 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 8 | 12 | 12 | 11 | 12 | 12 | 8 | 8 | 9 | 9 | 9 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 299 | 1069 | 1438 | 1053 | 1395 | 990 | 929 | 913 | 1298 | 1731 | 1830 | 1934 | 634 | 624 | 519 | 510 | 478 | 1645 | 908 | 1316 | 1302 | 1172 | 654 | 887 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross |
High Tide / height (m) | 7:22PM 1.05 | 7:11AM 0.94 | 8:10PM 1.13 | 8:12AM 0.89 | 8:51PM 1.20 | |||||||||||||||||||
Low Tide / height (m) | 12:45PM 0.26 | 1:29AM 0.45 | 1:29PM 0.29 | 2:34AM 0.40 | 2:10PM 0.30 | 3:26AM 0.34 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 |
| Sunset | - | - | 8:52 | - | - | - | - | - | - | - | 8:52 | - | - | - | - | - | - | - | 8:53 | - | - | - | - | - |
 | |  |  | | | | |  | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 18 | 18 | 17 | 15 | 14 | 14 | 13 | 14 | 17 | 17 | 16 | 14 | 13 | 13 | 13 | 16 | 18 | 19 | 17 | 15 | 18 | 16 | 15 | 17 |
| Feels °C (?) | 15 | 14 | 12 | 11 | 10 | 8 | 8 | 10 | 13 | 11 | 8 | 7 | 7 | 8 | 8 | 11 | 11 | 11 | 9 | 8 | 12 | 11 | 10 | 13 |
- 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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