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Guethary - Les Alcyons/Avalanche Surf Forecast
/ La Cote Basque (36 surf breaks) /
Surf Forecasts:
Guethary - Les Alcyons/Avalanche surfForecast / La Cote Basque / France
48hr Weather and Surf, issued 7 pm Wednesday 20 May 2026 CESTForecast 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
16.6° C
(Which is slightly warmer than usual)How big are the waves at Guethary - Les Alcyons/Avalanche today?
The current surf forecast for Guethary - Les Alcyons/Avalanche at 12AM is: 2.1m 13s primary swell from a West-northwest direction (forecast issued at 07:00pm May 20). The wind direction is predicted to be glassy and the swell rating is 4.
| Time (CEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | - | - |
| Afternoon (21 May) | 7.5ft (2.3m) | 14s |
| Evening (21 May) | 7.5ft (2.3m) | 14s |
Table - waves today at Guethary - Les Alcyons/Avalanche. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 31°C on Thu afternoon, min 16°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 11 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | |
2191 | 1917 | 1672 | 1427 | 1226 | 928 | 797 | 616 | 500 | 429 | 313 | 247 | 226 | 222 | 218 | 210 | 217 | 193 | 183 | 170 | 121 | 117 | 119 | 121 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross | cross | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross | cross-off | cross-on | cross-on | |
High Tide | 8:12PM3.73m | 8:50AM3.32m | 9:12PM3.53m | 9:54AM3.09m | 10:18PM3.34m | 11:05AM2.94m | ||||||||||||||||||
Low Tide | 2:27AM0.30m | 2:44PM0.62m | 3:28AM0.53m | 3:46PM0.83m | 4:36AM0.72m | |||||||||||||||||||
 | |  | | |  | | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:35 | — | — | — |
 | — | 9:28 | — | — | — | — | — | — | — | 9:29 | — | — | — | — | — | — | — | 9:30 | — | — | — | — | — | 9:30 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 21 | 19 | 19 | 18 | 17 | 17 | 23 | 28 | 31 | 29 | 27 | 17 | 18 | 19 | 25 | 30 | 31 | 30 | 27 | 25 | 16 | 17 | 21 | 25 |
19 | 18 | 20 | 19 | 17 | 16 | 23 | 28 | 30 | 30 | 28 | 15 | 17 | 19 | 25 | 29 | 30 | 30 | 28 | 26 | 15 | 17 | 22 | 26 | |
Swell 1 Height (m) Direction Period (s) | WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 11 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 |
 kJ | 2191 | 1917 | 1672 | 1427 | 1226 | 928 | 797 | 616 | 500 | 429 | 313 | 247 | 226 | 222 | 218 | 210 | 217 | 193 | 183 | 170 | 121 | 117 | 119 | 121 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 4 | WNW 4 | — | WNW 4 | — | — | — | — | — | W 4 | W 5 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 9 | 3 | — | 1 | — | — | — | — | — | 10 | 11 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | WSW 3 | W 4 | — | — | — | — | — | — | — | W 3 | W 4 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 2 | 11 | — | — | — | — | — | — | — | 1 | 7 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 6 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 12 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 13 | 0 | 10 | 87 |
Best forecast wave conditions in La Cote Basque | ||||||||||||||||||||||||
Best forecast wave conditions in France | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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