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:
Renaca surfForecast / Santiago / Chile
48hr Weather and Surf, issued 2 pm Wednesday 10 Dec 2025 -04Forecast update in hr min s Forecast update imminent
Renaca surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Renaca sea temperature is
16.7° C
(Which is slightly warmer than usual)How big are the waves at Renaca today?
The current surf forecast for Renaca at 6PM is: 1.0m 16s primary swell from a West-northwest direction and 0.8m 11s secondary swell from a Southwest direction (forecast issued at 02:00pm December 10). The wind direction is predicted to be cross-onshore.
| Time (-04) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Dec) | - | - |
| Afternoon (10 Dec) | 3.5ft (1.0m) | 16s |
| Evening (10 Dec) | 3.5ft (1.0m) | 16s |
Table - waves today at Renaca. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 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) (?) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 505 | 499 | 493 | 493 | 590 | 627 | 481 | 475 | 387 | 377 | 362 | 344 | 437 | 445 | 461 | 288 | 445 | 429 | 268 | 198 | 198 | 194 | 194 | 191 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | on | cross- on | cross- on | glass | glass | cross- on | cross- on | cross- on | on | on | glass | cross- on | on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | on |
High Tide / height (m) | 4:04PM 0.87 | 3:57AM 1.25 | 5:12PM 0.90 | 4:57AM 1.12 | 6:19PM 0.96 | 6:01AM 1.01 | ||||||||||||||||||
Low Tide / height (m) | 10:02AM 0.13 | 9:27PM 0.38 | 10:58AM 0.18 | 10:44PM 0.44 | 11:51AM 0.22 | 12:07AM 0.47 | ||||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 |
| Sunset | - | - | 8:46 | - | - | - | - | - | - | - | 8:46 | - | - | - | - | - | - | - | 8:47 | - | - | - | - | - |
 | | |  | | | |  |  | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 18 | 18 | 18 | 16 | 16 | 15 | 15 | 16 | 18 | 18 | 18 | 16 | 15 | 15 | 14 | 16 | 18 | 18 | 19 | 16 | 15 | 14 | 14 | 17 |
| Feels °C (?) | 16 | 16 | 16 | 15 | 16 | 15 | 15 | 16 | 16 | 16 | 16 | 15 | 15 | 16 | 14 | 16 | 15 | 16 | 17 | 14 | 14 | 13 | 13 | 16 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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