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:
Porthmeor surfForecast / Cornwall (North) / UK
48hr Weather and Surf, issued 5 pm Saturday 13 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Porthmeor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porthmeor sea temperature is
12.3° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Porthmeor today?
The current surf forecast for Porthmeor at 7PM is: 3.0m 14s primary swell from a West direction (forecast issued at 05:00pm December 13). The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | - | - |
| Afternoon (13 Dec) | 10ft (3.0m) | 14s |
| Evening (13 Dec) | 10ft (3.0m) | 14s |
Table - waves today at Porthmeor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| 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 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3710 | 3116 | 2876 | 3113 | 2972 | 3811 | 4532 | 4627 | 3612 | 3449 | 4135 | 3775 | 4010 | 3987 | 3371 | 3122 | 3190 | 3622 | 3224 | 3344 | 3344 | 3390 | 3436 | 3344 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | off | off | off | off | off | cross- on | on | on | on | on | on | on | on | on | on |
High Tide / height (m) | 12:23AM 4.35 | 12:49PM 4.50 | 1:24AM 4.45 | 1:46PM 4.56 | 2:15AM 4.62 | |||||||||||||||||||
Low Tide / height (m) | 6:17PM 1.62 | 6:41AM 1.77 | 7:17PM 1.64 | 7:43AM 1.72 | 8:11PM 1.56 | 8:36AM 1.58 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:12 | - | - | - | - | - | - | - | 8:14 | - | - | - | - | - | - | - | 8:15 | - |
| Sunset | 4:19 | - | - | - | - | - | - | - | 4:19 | - | - | - | - | - | - | - | 4:19 | - | - | - | - | - | - | - |
 |  |  | | | | | | | |  | | |  |  |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 1 | 3 | 5 | 10 | 6 | 5 | 1 | - | - | - | - | - | - | - |
| Temp. °C | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 12 | 12 | 12 | 11 | 10 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 10 | 10 |
| Feels °C (?) | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 3 | 3 | 3 | 3 | 2 | 0 | 3 | 10 | 6 | 5 | 5 | 6 | 5 | 5 | 4 | 5 | 5 |
- 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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