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:
Santo Amaro surfForecast / Lisboa / Portugal
48hr Weather and Surf, issued 5 pm Tuesday 16 Dec 2025 WETForecast update in hr min s Forecast update imminent
Santo Amaro surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Santo Amaro sea temperature is
15.8° C
(Which is slightly cooler than normal)How big are the waves at Santo Amaro today?
The current surf forecast for Santo Amaro at 8PM is: 4.0m 14s primary swell from a West-northwest direction (forecast issued at 05:00pm December 16). An open ocean swell of 3.5m 9s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | - | - |
| Afternoon (16 Dec) | 20ft (6.0m) | 13s |
| Evening (16 Dec) | 13ft (4.0m) | 14s |
Table - waves today at Santo Amaro. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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 | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 24 | 22 | 21 | 19 | 19 | 18 | 17 | 17 | 16 | 17 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 11175 | 12260 | 6288 | 5965 | 4729 | 4414 | 4232 | 3607 | 2979 | 2423 | 2121 | 1761 | 1732 | 3183 | 16269 | 18705 | 17239 | 17067 | 14593 | 14485 | 13551 | 11141 | 12376 | 10907 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | off | off | off | off | off | cross | cross | glass | cross- on | cross- on | on | on | on | on | on | off | off | off | off |
High Tide / height (m) | 12:09PM 2.25 | 12:32AM 2.37 | 12:52PM 2.31 | 1:10AM 2.47 | 1:31PM 2.37 | 1:47AM 2.56 | ||||||||||||||||||
Low Tide / height (m) | 6:16PM 0.66 | 6:43AM 0.63 | 6:55PM 0.60 | 7:22AM 0.54 | 7:31PM 0.54 | 7:59AM 0.46 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:48 | - | - | - | - | - | - | - | 7:48 | - | - | - | - | - | - | - | 7:50 | - |
| Sunset | 5:15 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - |
 |  |  | | | | | | | | | | | |  | | |  | |  | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | 3 | - | - | - |
| Temp. °C | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 14 | 15 | 13 | 13 | 13 | 12 | 11 | 11 | 14 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 14 |
| Feels °C (?) | 3 | 4 | 6 | 7 | 7 | 8 | 10 | 11 | 12 | 11 | 11 | 11 | 11 | 9 | 9 | 11 | 11 | 11 | 12 | 10 | 9 | 8 | 9 | 8 |
- 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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