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 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Guethary - Les Alcyons/Avalanche sea temperature is
23.5°C
2.6° 

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 (05 Sep):

  • Morning surf: Morning surf (05 Sep, local time) - 3ft (0.9m), 9s period with NW swell.
  • Afternoon surf: Afternoon surf (05 Sep, local time) - 4.5ft (1.3m), 12s period with NW swell.
  • Evening surf: Evening surf (05 Sep, local time) - 5.5ft (1.7m), 12s period with NW swell.

The current surf forecast for Guethary - Les Alcyons/Avalanche at 1AM is: 0.8m 9s primary swell from a West-northwest direction (forecast issued at 07:00pm September 04). The wind direction is predicted to be glassy.

Time (CEST) & DateWave HeightWave Period
Morning (05 Sep)3ft (0.9m)9s
Afternoon (05 Sep)4.5ft (1.3m)12s
Evening (05 Sep)5.5ft (1.7m)12s

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


Short Range Forecast

Mostly dry. Warm (max 30°C on Sat afternoon, min 18°C on Fri night). Wind will be generally light.

Fri
4
Saturday
5
Sunday
6
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
1
1
2
0
1
3
3
3
3
3
3
2
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)
0.7
NW
8
0.7
NW
9
0.8
WNW
9
0.8
WNW
9
0.9
NW
9
0.9
NW
9
0.9
NW
9
1.3
NW
11
1.5
NW
13
1.6
NW
13
1.7
NW
12
1.8
NW
13
1.7
NW
12
1.6
NW
12
1.6
NW
12
1.4
NW
12
1.3
NW
11
1.2
NW
11
1.1
NW
11
Wave Graph
Metric surfscale
Energy kJ
72
75
96
99
112
118
118
396
732
825
868
990
827
736
661
519
422
332
282
Wind (km/h)
10
W
10
W
5
W
5
W
5
SE
5
E
10
E
10
NNE
10
N
5
WNW
5
SW
0
SSE
5
SW
10
S
5
NW
10
WNW
15
WNW
15
W
15
WSW
Wind State
cross-on
cross-on
cross-on
glassy
glassy
glassy
cross-off
cross-on
cross-on
glassy
cross-off
glassy
glassy
cross-off
glassy
on
on
cross-on
cross-on
High Tide
10:42PM2.90m
11:21AM2.90m
00:20AM2.78m
1:01PM2.94m
Low Tide
4:17PM0.92m
4:53AM1.11m
5:44PM1.06m
6:25AM1.19m
7:21PM0.98m
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
part cloud
clear
cloud
cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:33
7:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:37
8:35
8:34
 mm
Temp °C
25
22
20
19
18
18
20
28
30
25
25
26
23
25
28
27
24
22
20
Feels °C
25
23
21
21
20
20
19
27
29
27
26
26
24
25
28
27
25
23
21
  • 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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