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 Friday 12 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
16.0° C
(Which is slightly cooler than normal)How big are the waves at Sao Lourenço today?
The current surf forecast for Sao Lourenço at 9AM is: 2.5m 16s primary swell from a Northwest direction and 2.5m 11s secondary swell from a West-northwest direction, 1.3m 6s secondary swell from a South direction (forecast issued at 05:00am December 12). The wind direction is predicted to be offshore.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 8ft (2.5m) | 16s |
| Afternoon (12 Dec) | 15ft (4.5m) | 17s |
| Evening (12 Dec) | 20ft (6.0m) | 19s |
Table - waves today at Sao Lourenço. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| 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 | 13 | 16 | 16 | 17 | 19 | 19 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3150 | 3082 | 3855 | 9314 | 12757 | 22275 | 22664 | 20877 | 18252 | 16243 | 13756 | 11118 | 8427 | 6849 | 5676 | 4135 | 3544 | 3009 | 2254 | 1952 | 1847 | 1952 | 2094 | 2596 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | off | cross- off | off | cross- off | cross- off | off | cross- off | cross- off | cross- off | off |
High Tide / height (m) | 8:27AM 2.38 | 9:14PM 2.13 | 9:33AM 2.29 | 10:17PM 2.16 | 10:35AM 2.25 | 11:13PM 2.24 | ||||||||||||||||||
Low Tide / height (m) | 2:03AM 0.87 | 2:58PM 0.75 | 3:14AM 0.93 | 4:01PM 0.79 | 4:22AM 0.92 | 4:56PM 0.78 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| Sunrise | - | - | 7:46 | - | - | - | - | - | - | - | 7:47 | - | - | - | - | - | - | - | 7:48 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:15 | - | - | - | - | - | - | - | 5:15 | - | - | - | - | - | - | - | 5:15 | - | - | - |
 |  |  |  | | | | |  |  |  | | | |  | | | | | | | | | | |
Rain (mm) | 3 | 14 | 3 | 7 | 8 | 2 | 3 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 12 | 12 | 11 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 14 | 16 | 14 | 13 | 13 | 12 | 11 | 11 | 14 | 15 | 14 | 13 | 12 |
| Feels °C (?) | 8 | 6 | 7 | 6 | 9 | 9 | 7 | 7 | 7 | 8 | 7 | 9 | 12 | 8 | 8 | 9 | 8 | 7 | 6 | 9 | 11 | 10 | 10 | 9 |
- 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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