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:
Isla Santa Maria surfForecast / Antofagasta / Chile
48hr Weather and Surf, issued 8 am Saturday 13 Dec 2025 -04Forecast update in hr min s Forecast update imminent
Isla Santa Maria surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Isla Santa Maria sea temperature is
17.5° C
(Which is 2.2°C colder than average for this time of year)How big are the waves at Isla Santa Maria today?
The current surf forecast for Isla Santa Maria at 2PM is: 1.1m 12s primary swell from a Southwest direction and 0.6m 13s secondary swell from a West-northwest direction, 0.3m 2s secondary swell from a Southwest direction (forecast issued at 08:00am December 13). The wind direction is predicted to be cross-shore.
| Time (-04) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 3.5ft (1.1m) | 12s |
| Afternoon (13 Dec) | 3.5ft (1.1m) | 12s |
| Evening (13 Dec) | 3.5ft (1.0m) | 11s |
Table - waves today at Isla Santa Maria. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 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 | 11 | 11 | 11 | 11 | 11 | 11 | 16 | 15 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 309 | 319 | 319 | 314 | 293 | 256 | 247 | 273 | 273 | 207 | 217 | 314 | 712 | 1018 | 796 | 888 | 875 | 771 | 715 | 1163 | 1144 | 1302 | 1338 | 1435 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross- off | cross- off | cross- off | cross |
High Tide / height (m) | 5:01AM 0.89 | 6:22PM 0.89 | 6:00AM 0.80 | 7:10PM 0.95 | 6:58AM 0.74 | 7:52PM 1.01 | ||||||||||||||||||
Low Tide / height (m) | 11:45AM 0.16 | 12:27AM 0.38 | 12:27PM 0.18 | 1:34AM 0.35 | 1:07PM 0.20 | 2:30AM 0.30 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | - | 6:48 | - | - | - | - | - | - | - | 6:50 | - | - | - | - | - | - | - | 6:50 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 8:22 | - | - | - | - | - | - | - | 8:22 | - | - | - | - | - | - | - | 8:23 | - | - | - |
 |  | | | | | | | | | | | | | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 18 | 19 | 19 | 18 | 17 | 17 | 17 | 17 | 18 | 19 | 19 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 17 | 17 | 17 |
| Feels °C (?) | 17 | 18 | 18 | 17 | 16 | 16 | 16 | 17 | 17 | 18 | 18 | 16 | 15 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 16 | 17 |
- 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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