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:
Seaton surfForecast / Cornwall (South) / UK
48hr Weather and Surf, issued 5 pm Sunday 14 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Seaton surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Seaton sea temperature is
12.2° C
(Which is slightly warmer than usual)How big are the waves at Seaton today?
The current surf forecast for Seaton at 1AM is: 2.5m 7s primary swell from a South-southwest direction and 1.0m 13s secondary swell from a West-southwest direction (forecast issued at 05:00pm December 14). The wind direction is predicted to be onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 10ft (3.0m) | 8s |
| Afternoon (15 Dec) | 8ft (2.5m) | 13s |
| Evening (15 Dec) | 4.5ft (1.3m) | 14s |
Table - waves today at Seaton. (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) (?) | 14 | 14 | 14 | 7 | 13 | 8 | 8 | 8 | 13 | 8 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 453 | 578 | 516 | 656 | 3163 | 918 | 1024 | 881 | 2155 | 984 | 638 | 656 | 576 | 674 | 702 | 683 | 656 | 553 | 501 | 501 | 501 | 407 | 379 | 277 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | on | on | on | on | on | on | on | off | off | cross- off | off | off | off | off | cross- off | glass | cross- on | cross- on | cross- on | on |
High Tide / height (m) | 1:03PM 3.65 | 1:41AM 3.61 | 1:57PM 3.66 | 2:31AM 3.72 | 2:48PM 3.73 | 3:17AM 3.86 | ||||||||||||||||||
Low Tide / height (m) | 7:41PM 1.39 | 8:14AM 1.51 | 8:42PM 1.30 | 9:10AM 1.34 | 9:31PM 1.16 | 9:56AM 1.12 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:10 | - | - | - | - | - | - | - | 8:11 | - | - | - | - | - | - | - | 8:11 | - |
| Sunset | 4:14 | - | - | - | - | - | - | - | 4:14 | - | - | - | - | - | - | - | 4:14 | - | - | - | - | - | - | - |
 |  | | |  |  |  | |  | | | | | | | | |  | | |  | | |  | |
Rain (mm) | - | - | - | - | 5 | 9 | 10 | 7 | 4 | 5 | 7 | 9 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 9 | 8 | 9 | 8 | 9 | 9 | 8 | 7 | 7 | 7 | 8 | 9 | 10 |
| Feels °C (?) | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 4 | 3 | 3 | 7 | 1 | 1 | 3 | 2 | 4 | 4 | 5 | 4 | 5 | 4 | 4 | 3 | 3 |
- 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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