Guethary - Les Alcyons/Avalanche Surf Break

Lat Long: 43.43° N 1.62° W

Guethary - Les Alcyons/Avalanche 48 hour detailed Surf Forecast

Issued: 1 am 20 Jul 2026 (local time)

Forecast update in  hr  min

Today's Guethary - Les Alcyons/Avalanche sea temperature is
25.1° C
4.1° 

Guethary - Les Alcyons/Avalanche surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Guethary - Les Alcyons/Avalanche today (20 Jul):

  • Morning surf: Morning surf (20 Jul, local time) - 3ft (0.9m), 6s period with NNW swell.
  • Afternoon surf: Afternoon surf (20 Jul, local time) - 2.5ft (0.8m), 6s period with NNW swell.
  • Evening surf: Evening surf (20 Jul, local time) - 3.5ft (1.1m), 7s period with N swell.

The current surf forecast for Guethary - Les Alcyons/Avalanche at 8AM is: 0.9m 6s primary swell from a North-northwest direction and 0.4m 8s secondary swell from a Northwest direction (forecast issued at 01:00am July 20). The wind direction is predicted to be glassy.

Time (CEST) & DateWave HeightWave Period
Morning (20 Jul)3ft (0.9m)6s
Afternoon (20 Jul)2.5ft (0.8m)6s
Evening (20 Jul)3.5ft (1.1m)7s

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


Short Range Forecast

Mostly dry. Warm (max 25°C on Wed afternoon, min 19°C on Tue night). Wind will be generally light.

Monday
20
Tuesday
21
Wednesday
22
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
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
N
6
1
NNW
6
0.9
NNW
6
0.8
NNW
6
0.8
N
6
0.9
NNW
7
1
N
7
1.2
NNW
7
1.2
NNW
7
1.1
NNW
7
1.1
NNW
7
1
NNW
7
1
NNW
7
1
N
7
1
N
7
1.2
N
7
1.2
NNW
6
1
NNW
6
0.9
NNW
6
0.8
NNW
6
0.7
NNW
6
0.7
NNW
6
0.8
NNW
6
0.9
NNW
6
Wave Graph
Metric surfscale
Energy kJ
76
85
72
53
47
77
94
135
139
114
110
96
96
92
92
126
127
85
55
42
36
39
51
58
Wind (km/h)
10
SW
10
SW
5
SSW
5
NW
15
NW
15
NW
15
WSW
15
WSW
20
WSW
15
WSW
15
WSW
10
W
10
NW
15
WNW
15
WSW
15
SW
15
WSW
10
SW
5
SSE
5
NNE
15
NW
15
NW
5
W
15
WSW
Wind State
cross
cross
glassy
glassy
on
on
cross-on
cross
cross
cross
cross
cross-on
on
on
cross-on
cross
cross
cross
glassy
glassy
on
on
cross-on
cross
High Tide
9:43AM3.19m
10:03PM3.26m
10:31AM2.99m
10:55PM2.98m
11:27AM2.83m
Low Tide
3:25AM0.51m
3:40PM0.70m
4:12AM0.78m
4:32PM0.94m
5:04AM1.02m
5:33PM1.14m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:43
6:43
6:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:40
9:39
9:38
 mm
Temp °C
22
20
20
23
24
24
23
21
20
20
20
22
24
24
23
22
21
19
19
22
25
25
24
23
Feels °C
22
20
21
25
23
22
22
20
18
19
19
22
24
22
21
20
20
18
19
22
24
23
24
22
  • 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
How to use the Wavefinder 

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