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 circle12 Day Weather and Surf, issued 12 pm Tuesday 25 Nov 2025 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
15.8° C
 (Which is 1.4°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Guethary - Les Alcyons/Avalanche this week:

The surf forecast for Guethary - Les Alcyons/Avalanche over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Nov 26) at 7AM. The primary swell is predicted to be 2.3m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Guethary - Les Alcyons/Avalanche in the next 12 days are 3.5m 12s and forecast to arrive on Saturday (Nov 29) at 10PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (CET) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Wed 26th Nov)7.5ft (2.3m) 10s
Best Surf 7AM (Wed 26th Nov)7.5ft (2.3m) 10s
Most Powerful10PM (Sat 29th Nov)11ft (3.5m) 12s

Table - best surf conditions forecast for Guethary - Les Alcyons/Avalanche over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Heavy rain (total 25mm), heaviest during Tue morning. Very mild (max 13°C on Tue morning, min 7°C on Wed night). Winds decreasing (fresh winds from the NNW on Tue afternoon, calm by Thu afternoon).

Days 3-6 Weather Summary Heavy rain (total 33mm), heaviest during Sat afternoon. Very mild (max 14°C on Sat morning, min 8°C on Sun night). Winds increasing (calm on Fri morning, fresh winds from the NNW by Sat afternoon).

Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
01
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
3
1
2
1
0
1
1
2
3
3
2
3
1
1
3
3
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
3.5
NW
3.5
NW
3
NW
2
NW
1.5
NW
1.2
NW
0.8
NW
0.6
NNW
0.8
NW
1.1
NW
1.4
NW
2.2
NW
2.4
NW
2.2
NW
3.5
NW
3
NW
2.5
NW
2.5
NW
1.9
NW
1.5
NW
1.3
WNW
Period(s) (?)11111110109989891413131212119111010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)308726701830753408235109481171603001949181716093462219117141228828459327
Wind
(km/h)
25
NNW
30
NNW
25
NNW
5
ESE
10
NNE
5
SE
5
SSE
5
ESE
5
SSE
5
S
5
W
10
SW
10
SW
15
WNW
10
NW
20
WNW
20
NW
5
ENE
10
SSE
5
SE
10
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
ononcross-
on		glasscrossoffcross-
off		glassglassglassglasscrosscrossononononcrosscross-
off		glassoff
High Tide
/ height (m)
7:26PM
2.91
7:45AM
3.08
8:16PM
2.79
8:39AM
2.99
9:18PM
2.72
9:42AM
2.96
10:29PM
2.75
10:52AM
3.01
11:39PM
2.88
11:59AM
3.15
12:42AM
3.10
1:01PM
3.34
1:37AM
3.35
Low Tide
/ height (m)
1:18PM
0.86
1:29AM
0.98
2:06PM
0.97
2:19AM
1.10
3:04PM
1.03
3:20AM
1.16
4:10PM
1.01
4:30AM
1.14
5:18PM
0.90
5:40AM
1.02
6:20PM
0.72
6:43AM
0.80
7:16PM
0.51
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
01
Sunrise8:11--8:11--8:12--8:15--8:15--8:17--8:18--
Sunset-5:34--5:34--5:32--5:32--5:31--5:31--5:30-
thunderstorm
thunderstorm
rain showers
part cloud
clear
clear
cloud
cloud
part cloud
cloud
cloud
rain showers
light rain
mod rain
rain showers
rain showers
rain showers
rain showers
part cloud
cloud
part cloud
Rain (mm)
8611--------5278641---
Temp. °C13121110108101111121313141412121211121213
Feels °C (?)85577579811121113117777101011
  • 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

Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Ben Mondy

Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.

Feel that? If you are in the northern hemisphere, you will have had that first bite of winter. The lick of a frost, the chill of a cold offshore breeze and the sound of winter swells pounding the shores. If you are near the mountains, your favourite jackets, gloves, and footwear might get dusted off and prepped for battle. And in that beautiful Venn diagram, you will find PrimaLoft. They have spent over 40 years developing innovative insulations that have powered your warmest winter gear. In t

Read more

Read more

Discover more articles and updates in the Greenroom.

submit an eyeball surf report

Quick surf report for Guethary - Les Alcyons/Avalanche:

join our community of surf reporters

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

Information about the Guethary - Les Alcyons/Avalanche Surf forecast

The above surf forecast table for Guethary - Les Alcyons/Avalanche provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Guethary - Les Alcyons/Avalanche can be found by selecting the local surf guide option on the grey menu. Our Guethary - Les Alcyons/Avalanche surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Guethary - Les Alcyons/Avalanche) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Guethary - Les Alcyons/Avalanche may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Guethary - Les Alcyons/Avalanche is 9 km (6 miles) from Biarritz. If you plan a holiday in La Cote Basque, look for hotels and other accommodation in Biarritz. Biarritz has rooms for a wide range of budgets as well as car hire and transport links.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest