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:
Grunta Beach surfForecast / Devon (North) / UK
48hr Weather and Surf, issued 5 am Thursday 11 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Grunta Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Grunta Beach sea temperature is
12.0° C
(Which is slightly warmer than usual)How big are the waves at Grunta Beach today?
The current surf forecast for Grunta Beach at 8AM is: 2.4m 13s primary swell from a West-southwest direction (forecast issued at 05:00am December 11). The wind direction is predicted to be cross-shore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 8ft (2.4m) | 13s |
| Afternoon (11 Dec) | 10ft (3.0m) | 12s |
| Evening (11 Dec) | 10ft (3.0m) | 14s |
Table - waves today at Grunta Beach. (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) (?) | 14 | 13 | 13 | 12 | 12 | 14 | 14 | 14 | 14 | 14 | 14 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 15 | 15 | 9 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2355 | 1930 | 1759 | 1637 | 2282 | 3514 | 3295 | 2918 | 2779 | 2890 | 2680 | 4404 | 4355 | 3948 | 3568 | 3446 | 2922 | 2766 | 1386 | 743 | 1211 | 1808 | 1886 | 1611 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross- on | cross- on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 10:38AM 7.83 | 11:12PM 7.35 | 11:37AM 7.50 | 12:13AM 7.12 | 12:40PM 7.32 | |||||||||||||||||||
Low Tide / height (m) | 4:12AM 2.54 | 4:56PM 2.61 | 5:11AM 2.89 | 5:56PM 2.89 | 6:16AM 3.08 | 6:57PM 3.00 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| Sunrise | - | - | 8:10 | - | - | - | - | - | - | - | 8:11 | - | - | - | - | - | - | - | 8:11 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:08 | - | - | - | - | - | - | - | 4:08 | - | - | - | - | - | - | - | 4:08 | - | - | - |
 | |  | | |  |  | |  | |  | | |  | | | | |  | | | | | | |
Rain (mm) | - | - | - | - | - | 1 | - | - | 7 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 10 | 11 | 12 | 12 | 12 | 11 | 11 | 10 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 10 | 10 | 9 | 10 | 10 |
| Feels °C (?) | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 5 | 7 | 2 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 4 | 3 | 3 | 2 | 0 | 2 | 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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