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:
Trevone Bay surfForecast / Cornwall (North) / UK
48hr Weather and Surf, issued 5 pm Sunday 14 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Trevone Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Trevone Bay sea temperature is
11.9° C
(Which is slightly warmer than usual)How big are the waves at Trevone Bay today?
The current surf forecast for Trevone Bay at 7PM is: 4.0m 12s primary swell from a West direction (forecast issued at 05:00pm December 14). The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | - | - |
| Afternoon (14 Dec) | 11ft (3.5m) | 12s |
| Evening (14 Dec) | 13ft (4.0m) | 12s |
Table - waves today at Trevone Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||||||||
| 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) (?) | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3983 | 4168 | 4251 | 3953 | 3969 | 3172 | 2920 | 2843 | 2816 | 2402 | 2308 | 2374 | 2606 | 2679 | 2716 | 2643 | 2407 | 2341 | 2125 | 2065 | 1894 | 1788 | 1682 | 1642 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | on | glass | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 1:02PM 5.02 | 1:36AM 4.94 | 2:00PM 5.07 | 2:30AM 5.12 | 2:51PM 5.22 | 3:16AM 5.34 | ||||||||||||||||||
Low Tide / height (m) | 7:30PM 1.85 | 7:55AM 1.92 | 8:24PM 1.76 | 8:48AM 1.75 | 9:11PM 1.60 | 9:34AM 1.54 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:12 | - | - | - | - | - | - | - | 8:14 | - | - | - | - | - | - | - | 8:15 | - |
| Sunset | 4:15 | - | - | - | - | - | - | - | 4:15 | - | - | - | - | - | - | - | 4:15 | - | - | - | - | - | - | - |
 |  |  | |  | |  | | | | | | | |  | |  |  | |  | | | | | |
Rain (mm) | 1 | - | 1 | 3 | 7 | 7 | 10 | 6 | 3 | 6 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 12 | 12 | 12 | 11 | 11 | 10 | 11 | 11 | 10 | 9 | 9 | 9 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 8 | 9 | 9 | 10 |
| Feels °C (?) | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 6 | 11 | 4 | 1 | 2 | 1 | 3 | 4 | 3 | 4 | 5 | 7 | 5 | 3 | 4 | 3 | 2 |
- 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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