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:
Sao Lourenço surfForecast / Ericeira / Portugal
48hr Weather and Surf, issued 5 am Thursday 11 Dec 2025 WETForecast update in hr min s Forecast update imminent
Sao Lourenço surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Sao Lourenço sea temperature is
15.9° C
(Which is slightly cooler than normal)How big are the waves at Sao Lourenço today?
The current surf forecast for Sao Lourenço at 12PM is: 3.0m 13s primary swell from a West-northwest direction (forecast issued at 05:00am December 11). The wind direction is predicted to be cross-shore.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 10ft (3.0m) | 13s |
| Afternoon (11 Dec) | 8ft (2.5m) | 13s |
| Evening (11 Dec) | 8ft (2.4m) | 13s |
Table - waves today at Sao Lourenço. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| 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 | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 16 | 16 | 17 | 19 | 19 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 4186 | 4038 | 3416 | 2737 | 2021 | 1435 | 1891 | 2919 | 3502 | 3244 | 3855 | 11182 | 11949 | 24814 | 24590 | 21953 | 19538 | 16824 | 14565 | 11570 | 8690 | 7085 | 6148 | 4370 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | glass | glass | cross | cross- on | cross | cross- off | cross- off | cross | cross- off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off |
High Tide / height (m) | 7:24AM 2.53 | 8:08PM 2.16 | 8:27AM 2.38 | 9:14PM 2.13 | 9:33AM 2.29 | 10:17PM 2.16 | ||||||||||||||||||
Low Tide / height (m) | 12:58AM 0.74 | 1:54PM 0.66 | 2:03AM 0.87 | 2:58PM 0.75 | 3:14AM 0.93 | 4:01PM 0.79 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| Sunrise | - | - | 7:45 | - | - | - | - | - | - | - | 7:46 | - | - | - | - | - | - | - | 7:47 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:15 | - | - | - | - | - | - | - | 5:15 | - | - | - | - | - | - | - | 5:15 | - | - | - |
 | |  |  |  |  | |  | | |  |  | |  | | | | | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | 1 | 3 | 3 | 6 | 1 | 4 | 11 | 4 | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 12 | 12 | 13 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 11 | 11 | 10 | 12 | 12 | 13 | 14 | 16 | 15 | 14 | 12 |
| Feels °C (?) | 10 | 11 | 11 | 11 | 11 | 12 | 11 | 10 | 7 | 9 | 12 | 11 | 8 | 4 | 4 | 6 | 8 | 8 | 8 | 10 | 12 | 10 | 9 | 7 |
- 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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