Guethary - Les Alcyons/Avalanche Surf Break

Lat Long: 43.43° N 1.62° W

Guethary - Les Alcyons/Avalanche 48 hour detailed Surf Forecast

Issued: 7 pm 14 Aug 2026 (local time)

Forecast update in  hr  min

Today's Guethary - Les Alcyons/Avalanche sea temperature is
24.8° C
3.0° 

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 (15 Aug):

  • Afternoon surf: Afternoon surf (15 Aug, local time) - 2ft (0.6m), 10s period with WNW swell.
  • Evening surf: Evening surf (15 Aug, local time) - 2ft (0.6m), 9s period with WNW swell.

The current surf forecast for Guethary - Les Alcyons/Avalanche at 12AM is: 0.6m 9s primary swell from a West-northwest direction and 0.7m 4s secondary swell from a West-northwest direction (forecast issued at 07:00pm August 14). The wind direction is predicted to be cross-onshore.

Time (CEST) & DateWave HeightWave Period
Morning (15 Aug)--
Afternoon (15 Aug)2ft (0.6m)10s
Evening (15 Aug)2ft (0.6m)9s

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


Short Range Forecast

Light rain (total 4mm), mostly falling on Sat night. Warm (max 24°C on Sun afternoon, min 20°C on Sun night). Wind will be generally light.

Fri
14
Saturday
15
Sunday
16
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
WNW
10
0.6
WNW
9
0.6
WNW
9
0.6
WNW
9
0.7
WNW
9
0.7
WNW
9
0.7
WNW
9
0.7
WNW
9
0.6
WNW
9
0.7
WNW
8
0.8
NW
6
0.6
WNW
8
0.9
NW
8
0.9
NW
8
0.8
NW
8
0.8
NW
8
0.8
NW
8
0.9
NW
8
0.7
NW
8
Wave Graph
Metric surfscale
Energy kJ
74
69
68
66
73
71
71
70
49
62
47
46
98
95
78
78
77
104
67
Wind (km/h)
10
WNW
15
W
20
WSW
5
W
5
WSW
10
WSW
10
W
15
WNW
10
NW
10
W
10
W
0
SW
10
SW
10
W
5
WNW
10
WNW
10
NW
10
NNW
10
W
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
on
cross-on
cross-on
glassy
cross
cross-on
glassy
on
on
on
cross-on
High Tide
6:38PM4.16m
7:02AM3.79m
7:18PM4.05m
7:40AM3.68m
7:56PM3.82m
Low Tide
00:46AM-0.12m
12:56PM0.03m
1:25AM0.01m
1:36PM0.16m
part cloud
clear
cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
thunderstorm
light rain
cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:09
7:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:12
9:09
9:08
 mm
2
2
Temp °C
24
23
22
21
21
21
22
23
23
22
21
21
21
21
22
24
24
23
21
Feels °C
26
24
23
23
24
23
23
24
25
24
22
24
23
23
25
26
25
25
23
  • 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
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