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 am Saturday 13 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
16.8° C
(Which is slightly warmer than usual)How big are the waves at Renaca today?
The current surf forecast for Renaca at 6AM is: 1.1m 11s primary swell from a Southwest direction and 0.6m 14s secondary swell from a West-northwest direction (forecast issued at 02:00am December 13). The wind direction is predicted to be cross-onshore.
| Time (-04) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 3.5ft (1.1m) | 11s |
| Afternoon (13 Dec) | 4ft (1.2m) | 11s |
| Evening (13 Dec) | 6ft (1.9m) | 13s |
Table - waves today at Renaca. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| 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 | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 11 | 11 | 11 | 11 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 338 | 194 | 297 | 254 | 258 | 350 | 834 | 1242 | 1326 | 1387 | 959 | 860 | 846 | 833 | 1451 | 689 | 689 | 634 | 624 | 524 | 1424 | 1761 | 1075 | 1472 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | glass | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | cross- on | cross- on |
High Tide / height (m) | 6:01AM 1.01 | 7:17PM 1.03 | 7:05AM 0.93 | 8:05PM 1.11 | 8:06AM 0.88 | 8:47PM 1.19 | ||||||||||||||||||
Low Tide / height (m) | 12:40PM 0.25 | 1:24AM 0.45 | 1:24PM 0.28 | 2:29AM 0.40 | 2:05PM 0.30 | |||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 8:49 | - | - | - | - | - | - | - | 8:49 | - | - | - | - | - | - | - | 8:50 | - |
 | | |  | | | |  | | |  |  |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 14 | 14 | 16 | 19 | 20 | 19 | 17 | 15 | 14 | 14 | 15 | 18 | 18 | 18 | 15 | 13 | 13 | 12 | 17 | 22 | 23 | 21 | 17 |
| Feels °C (?) | 14 | 13 | 13 | 16 | 17 | 17 | 16 | 14 | 13 | 12 | 12 | 12 | 14 | 13 | 13 | 11 | 10 | 11 | 9 | 14 | 16 | 15 | 13 | 12 |
- 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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