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:
Silos surfForecast / Scot – North Coast / UK
48hr Weather and Surf, issued 11 am Sunday 14 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Silos surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Silos sea temperature is
10.3° C
(Which is slightly warmer than usual)How big are the waves at Silos today?
The current surf forecast for Silos at 5PM is: 2.5m 12s primary swell from a West direction (forecast issued at 11:00am December 14). An open ocean swell of 0.9m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 10ft (3.0m) | 13s |
| Afternoon (14 Dec) | 8ft (2.5m) | 12s |
| Evening (14 Dec) | 10ft (3.0m) | 12s |
Table - waves today at Silos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||||||||
| 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 | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 14 | 14 | 13 | 14 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2830 | 2335 | 1987 | 1897 | 2559 | 1343 | 2513 | 3371 | 3606 | 3607 | 3949 | 5810 | 6854 | 6877 | 5955 | 5141 | 4746 | 4310 | 3532 | 3467 | 4432 | 4522 | 3425 | 2419 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off |
High Tide / height (m) | 4:27PM 2.49 | 5:18AM 2.44 | 5:22PM 2.51 | 6:02AM 2.56 | 6:12PM 2.57 | |||||||||||||||||||
Low Tide / height (m) | 10:31AM 1.11 | 11:07PM 0.78 | 11:32AM 1.00 | 11:56PM 0.75 | 12:20PM 0.87 | 12:37AM 0.70 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||||||||
| Sunrise | 8:56 | - | - | - | - | - | - | - | 8:56 | - | - | - | - | - | - | - | 8:57 | - | - | - | - | - | - | - |
| Sunset | - | - | 3:18 | - | - | - | - | - | - | - | 3:18 | - | - | - | - | - | - | - | 3:18 | - | - | - | - | - |
 |  | |  |  | | | | | | |  | | | | | | |  | | |  | | | |
Rain (mm) | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 11 | 11 | 12 | 8 | 7 | 7 | 7 | 7 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 7 | 6 | 6 | 6 | 5 | 5 | 7 |
| Feels °C (?) | 6 | 6 | 4 | 6 | -1 | 1 | 1 | 1 | 1 | 3 | 2 | 2 | 2 | 3 | 1 | 1 | 0 | 1 | 0 | -1 | -1 | -1 | -1 | 0 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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