Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Guethary - Les Alcyons/Avalanche surfForecast / La Cote Basque / France
48hr Weather and Surf, issued 6 pm Friday 26 Dec 2025 CETForecast update in hr min s Forecast update imminent
Guethary - Les Alcyons/Avalanche surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Guethary - Les Alcyons/Avalanche sea temperature is
14.3° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Guethary - Les Alcyons/Avalanche today?
The current surf forecast for Guethary - Les Alcyons/Avalanche at 12AM is: 0.4m 11s primary swell from a West-northwest direction and 0.2m 5s secondary swell from a North direction (forecast issued at 06:00pm December 26). The wind direction is predicted to be offshore.
| Time (CET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Dec) | - | - |
| Afternoon (27 Dec) | 2ft (0.6m) | 12s |
| Evening (27 Dec) | 1.5ft (0.5m) | 11s |
Table - waves today at Guethary - Les Alcyons/Avalanche. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | |||||||||||||||||||||
| 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 15 | 12 | 12 | 13 | 11 | 11 | 12 | 12 | 12 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 108 | 64 | 60 | 47 | 30 | 30 | 31 | 25 | 25 | 24 | 23 | 21 | 29 | 37 | 62 | 47 | 46 | 50 | 49 | 56 | 48 | 47 | 24 | 22 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | glass | off | off | off | off | cross- off | cross- off | cross- off | off | cross- off | cross- off | off | glass | glass | cross | off | cross- off | off | cross- off | off | cross- off | glass |
High Tide / height (m) | 8:44PM 3.00 | 9:03AM 3.22 | 9:41PM 2.95 | 10:03AM 3.14 | 10:47PM 2.95 | 11:13AM 3.11 | ||||||||||||||||||
Low Tide / height (m) | 2:32PM 0.71 | 2:44AM 0.88 | 3:25PM 0.77 | 3:43AM 0.95 | 4:26PM 0.82 | 4:52AM 0.96 | ||||||||||||||||||
Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:37 | - | - | - | - | - | - | - | 8:37 | - | - | - | - | - | - | - | 8:37 | - |
| Sunset | 5:35 | - | - | - | - | - | - | - | 5:36 | - | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - |
 |  |  | | | | | |  | | | | | |  | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 8 | 8 | 7 | 7 | 7 | 8 | 8 | 11 | 12 | 11 | 10 | 8 | 8 | 8 | 9 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 12 |
| Feels °C (?) | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 9 | 9 | 8 | 8 | 5 | 6 | 5 | 7 | 11 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 11 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
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.
Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.
Read more
Discover more articles and updates in the Greenroom.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Guethary - Les Alcyons/Avalanche surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest