Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

Guethary - Les Alcyons/Avalanche surfForecast / La Cote Basque / France

information circle48hr Weather and Surf, issued 6 pm Tuesday 17 Feb 2026 CET
Forecast 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
12.2° C
 (Which is 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 2AM is: 2.5m 13s primary swell from a Northwest direction (forecast issued at 06:00pm February 17). The wind direction is predicted to be cross-offshore and the swell rating is 4.

Time (CET) & DateWave HeightWave Period
Morning (18 Feb)8ft (2.4m)12s
Afternoon (18 Feb)7.5ft (2.3m)12s
Evening (18 Feb)15ft (4.5m)11s

Table - waves today at Guethary - Les Alcyons/Avalanche. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM
Rating
(10 max)
4
4
4
4
4
4
4
3
2
0
0
0
0
0
0
0
0
0
0
0
5
4
3
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
3
NW
3
NW
3
NW
2.5
NW
2.5
NW
2.4
NW
2.4
NW
2.3
NW
2.4
WNW
2.5
WNW
4.5
WNW
6.5
WNW
6
WNW
6
WNW
6
WNW
6.5
WNW
6
WNW
6
NW
5.5
NW
5
NW
4.5
NW
4
NW
3.5
NW
3
NW
Period(s) (?)131313131313121212121113131313131313141414131313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)34203075260124902039178916261472156019035054127911224912073126141280512522125761171493757312526239933116
Wind
(km/h)
10
SSW
10
SW
10
SW
10
S
10
SSE
10
SSE
10
SSE
15
S
35
SSW
40
WSW
45
W
45
W
50
W
50
W
45
W
45
W
40
WNW
35
WNW
30
NW
25
NW
20
NW
15
WNW
10
WNW
15
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		ononononononcross-
on
High Tide
/ height (m)
4:47PM
3.57
5:00AM
3.90
5:20PM
3.69
5:33AM
3.99
5:53PM
3.75
6:07AM
3.99
Low Tide
/ height (m)
10:44PM
0.25
11:09AM
0.07
11:18PM
0.13
11:42AM
-0.00
11:52PM
0.08
12:17PM
0.01
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Sunrise------8:00-------7:58-------7:58-
Sunset6:37-------6:39-------6:40-------
clear
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
rain showers
rain showers
thunderstorm
thunderstorm
light rain
light rain
rain showers
rain showers
rain showers
light rain
light rain
light rain
rain showers
light rain
part cloud
Rain (mm)
---------11122111111111-
Temp. °C13131313121112161714119999101010101111111111
Feels °C (?)1111111110910121061-1-2-1-1112357888
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Latest Updates

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal
travel
Surf Forecast

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal

Surf road trips just got even better. Surf-Forecast users can now save up to 20% on SIXT rental cars worldwide during the promotional period until March 31, 2026. Whether you’re planning a legendary California road trip, chasing waves along Europe’s coasts, or exploring remote surf destinations, this exclusive SIXT offer helps you travel smarter and cheaper. And if you want some inspiration on where to go, check out our article Five Iconic Surf Road Trips. Click and get your SIXT discount

The World’s Most Inconsistent Waves
Ben Mondy

The World’s Most Inconsistent Waves

Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean

Read more

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.

View detailed surf forecast for Guethary - Les Alcyons/Avalanche at:
surf-forecast.com

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest