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 am Sunday 14 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
15.9° C
(Which is normal for this time of year)How big are the waves at Matanzas today?
The current surf forecast for Matanzas at 2PM is: 2.5m 12s primary swell from a Southwest direction and 0.4m 13s secondary swell from a West-northwest direction, 0.2m 17s secondary swell from a West-northwest direction (forecast issued at 08:00am December 14). The wind direction is predicted to be cross-onshore.
| Time (-04) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 5ft (1.6m) | 12s |
| Afternoon (14 Dec) | 8ft (2.5m) | 12s |
| Evening (14 Dec) | 8ft (2.5m) | 12s |
Table - waves today at Matanzas. (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) (?) | 12 | 12 | 12 | 12 | 12 | 12 | 8 | 12 | 8 | 11 | 12 | 12 | 8 | 8 | 9 | 9 | 9 | 10 | 10 | 10 | 9 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 929 | 773 | 761 | 1731 | 1830 | 1934 | 613 | 619 | 542 | 563 | 478 | 1739 | 932 | 1316 | 1435 | 1198 | 702 | 887 | 887 | 1238 | 1386 | 1347 | 1510 | 1604 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | 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- on | glass |
High Tide / height (m) | 7:11AM 0.94 | 8:10PM 1.13 | 8:12AM 0.89 | 8:51PM 1.20 | 9:06AM 0.88 | 9:28PM 1.27 | ||||||||||||||||||
Low Tide / height (m) | 1:29PM 0.29 | 2:34AM 0.40 | 2:10PM 0.30 | 3:26AM 0.34 | 2:48PM 0.31 | |||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wed 17 | |||||||||||||||||||||
| Sunrise | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 8:52 | - | - | - | - | - | - | - | 8:53 | - | - | - | - | - | - | - | 8:54 | - | - | - |
 |  |  |  | |  | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 14 | 17 | 17 | 16 | 14 | 14 | 14 | 14 | 16 | 19 | 19 | 17 | 16 | 17 | 17 | 15 | 17 | 20 | 21 | 18 | 16 | 15 | 14 |
| Feels °C (?) | 8 | 10 | 12 | 10 | 9 | 8 | 8 | 9 | 10 | 11 | 12 | 11 | 9 | 9 | 11 | 11 | 10 | 13 | 15 | 15 | 12 | 12 | 13 | 14 |
- 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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