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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 1 pm Monday 18 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
16.4° 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 9PM is: 1.7m 12s primary swell from a Northwest direction (forecast issued at 01:00pm May 18). The wind direction is predicted to be cross-onshore.
| Time (CEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 5ft (1.6m) | 13s |
| Afternoon (18 May) | 6ft (1.9m) | 12s |
| Evening (18 May) | 5.5ft (1.7m) | 12s |
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 23°C on Wed afternoon, min 14°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | WNW 10 | WNW 10 | WNW 14 | WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | |
878 | 1043 | 1010 | 895 | 808 | 722 | 594 | 553 | 431 | 453 | 486 | 459 | 400 | 392 | 392 | 448 | 661 | 1697 | 2002 | 1945 | 1599 | 1427 | 1117 | 928 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-on | cross-on | cross-on | glassy | glassy | glassy | off | glassy | cross-on | cross-on | cross-on | glassy | off | glassy | off | cross-off | cross | cross | cross | cross-off | off | cross-off | off | |
High Tide | 6:29PM3.98m | 7:00AM3.77m | 7:19PM3.89m | 7:53AM3.56m | 8:12PM3.73m | |||||||||||||||||||
Low Tide | 12:11PM0.08m | 00:39AM-0.05m | 12:59PM0.22m | 1:31AM0.09m | 1:49PM0.41m | 2:27AM0.30m | ||||||||||||||||||
 |  | | |  | |  | | | | | | | |  | |  | | | | | | | | |
 | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:35 | — |
 | — | — | — | 9:25 | — | — | — | — | — | — | — | 9:27 | — | — | — | — | — | — | — | 9:28 | — | — | — | 9:29 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 14 | 16 | 16 | 16 | 15 | 14 | 14 | 15 | 18 | 20 | 20 | 18 | 17 | 16 | 16 | 15 | 18 | 22 | 23 | 23 | 21 | 19 | 18 | 19 |
13 | 14 | 14 | 15 | 14 | 13 | 14 | 14 | 18 | 18 | 18 | 17 | 16 | 15 | 15 | 14 | 17 | 21 | 21 | 22 | 21 | 20 | 18 | 18 | |
Swell 1 Height (m) Direction Period (s) | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | WNW 10 | WNW 10 | WNW 14 | WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 |
 kJ | 878 | 1043 | 1010 | 895 | 808 | 722 | 594 | 553 | 431 | 453 | 486 | 459 | 400 | 392 | 392 | 448 | 661 | 1697 | 2002 | 1945 | 1599 | 1427 | 1117 | 928 |
Swell 2 Height (m) Direction Period (s) | NW 7 | — | — | — | — | — | — | — | — | — | W 16 | — | W 15 | NW 15 | WNW 14 | NW 17 | WNW 16 | — | — | — | — | — | — | — |
| kJ | 77 | — | — | — | — | — | — | — | — | — | 5 | — | 4 | 8 | 21 | 72 | 229 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 19 | WNW 18 | — | WNW 14 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 32 | — | 76 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 87 | 11 | 11 | 0 | 0 | 0 | 0 | 0 | 87 | 51 | 11 | 0 | 0 | 0 | 0 | 0 | 6 | 13 | 1 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in La Cote Basque | ||||||||||||||||||||||||
Best forecast wave conditions in France | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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