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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 am Sunday 31 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
20.7° C
(Which is 3.8°C warmer than normal for this time of year)How big are the waves at Guethary - Les Alcyons/Avalanche today (31 May):
- Morning surf: Morning surf (31 May, local time) - 3ft (0.9m), 12s period with WNW swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 3ft (0.9m), 11s period with WNW swell.
- Evening surf: Evening surf (31 May, local time) - 3ft (0.9m), 11s period with WNW swell.
The current surf forecast for Guethary - Les Alcyons/Avalanche at 4AM is: 0.6m 13s primary swell from a West-northwest direction and 0.4m 10s secondary swell from a West-northwest direction, 0.8m 5s secondary swell from a West-northwest direction (forecast issued at 01:00am May 31). The wind direction is predicted to be cross-onshore.
| Time (CEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 3ft (0.9m) | 12s |
| Afternoon (31 May) | 3ft (0.9m) | 11s |
| Evening (31 May) | 3ft (0.9m) | 11s |
Table - waves today at Guethary - Les Alcyons/Avalanche. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Tue morning. Warm (max 20°C on Mon afternoon, min 14°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 31 | Monday 1 | Tuesday 2 | ||||||||||||||||||||||
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 | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
WNW 14 | WNW 13 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | NW 7 | NW 7 | |
104 | 133 | 210 | 250 | 221 | 210 | 158 | 203 | 210 | 210 | 269 | 193 | 180 | 193 | 190 | 186 | 183 | 161 | 121 | 78 | 77 | 240 | 106 | 160 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross-on | cross-on | on | on | on | glassy | cross-off | glassy | off | cross | cross-on | cross-on | on | on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 5:17AM3.33m | 5:31PM3.46m | 5:52AM3.32m | 6:05PM3.46m | 6:27AM3.27m | 6:41PM3.43m | ||||||||||||||||||
Low Tide | 11:14AM0.59m | 11:37PM0.51m | 11:50AM0.61m | 00:15AM0.53m | 12:26PM0.65m | |||||||||||||||||||
 | |  | |  | | | |  | | |  | | | | | |  | |  |  | | | | |
 | — | 6:28 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:38 | — | — | — | — | — | — | — | 9:38 | — | — | — | — | — | — | — | 9:39 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | |
Temp °C | 15 | 14 | 15 | 16 | 17 | 17 | 17 | 15 | 14 | 14 | 14 | 17 | 20 | 20 | 18 | 17 | 16 | 16 | 17 | 16 | 17 | 18 | 17 | 16 |
13 | 12 | 14 | 15 | 16 | 16 | 17 | 15 | 14 | 14 | 13 | 16 | 20 | 19 | 18 | 18 | 16 | 15 | 16 | 14 | 15 | 15 | 15 | 15 | |
Swell 1 Height (m) Direction Period (s) | WNW 14 | WNW 13 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 12 | WNW 10 | NW 7 |
 kJ | 104 | 133 | 210 | 250 | 221 | 210 | 158 | 203 | 210 | 210 | 269 | 193 | 180 | 193 | 190 | 186 | 183 | 161 | 121 | 78 | 77 | 15 | 77 | 160 |
Swell 2 Height (m) Direction Period (s) | WNW 10 | WNW 10 | NW 6 | NW 6 | NW 6 | NW 6 | NNW 6 | NNW 6 | NNW 5 | NW 5 | — | NNW 4 | — | — | — | — | — | — | — | — | — | — | — | WNW 10 |
| kJ | 31 | 31 | 44 | 28 | 32 | 29 | 24 | 22 | 11 | 6 | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 77 |
Swell 3 Height (m) Direction Period (s) | NW 8 | — | — | NW 9 | — | — | NW 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 24 | — | — | 12 | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 5 | NW 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 3 | WNW 4 | WNW 5 | WNW 10 | NW 7 | — |
| kJ | 26 | 35 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 11 | 19 | 240 | 106 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 12 | 12 | 12 | 12 | 87 | 87 | 0 | 0 | 0 | 0 | 1 | 87 | 87 | 39 | 12 | 12 | 12 | 13 | 583 | 304 | 196 | 147 | 12 |
Best forecast wave conditions in La Cote Basque | ||||||||||||||||||||||||
Best forecast wave conditions in France | ||||||||||||||||||||||||
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