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 18 Oct 2026 (local time)

Forecast update in  hr  min

Today's Guethary - Les Alcyons/Avalanche sea temperature is
21.1°C
3.8° 

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 (18 Oct):

  • Morning surf: Morning surf (18 Oct, local time) - 4ft (1.2m), 12s period with NW swell.
  • Afternoon surf: Afternoon surf (18 Oct, local time) - 3.5ft (1.1m), 11s period with NW swell.
  • Evening surf: Evening surf (18 Oct, local time) - 3.5ft (1.1m), 11s period with NW swell.

The current surf forecast for Guethary - Les Alcyons/Avalanche at 7AM is: 1.1m 12s primary swell from a Northwest direction and 1.1m 7s secondary swell from a North direction (forecast issued at 01:00am October 18). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (CEST) & DateWave HeightWave Period
Morning (18 Oct)4ft (1.2m)12s
Afternoon (18 Oct)3.5ft (1.1m)11s
Evening (18 Oct)3.5ft (1.1m)11s

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


Short Range Forecast

Mostly dry. Very mild (max 15°C on Sun afternoon, min 10°C on Sun morning). Wind will be generally light.

Sunday
18
Monday
19
Tuesday
20
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)
2
3
2
2
0
0
0
2
2
2
1
2
1
1
1
2
2
2
3
3
2
2
3
3
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)
1.8
NW
12
1.7
NNW
12
1.1
NW
12
1.2
NW
12
1.1
NW
11
1.1
NW
11
1.1
NW
11
1
NW
12
1.2
NW
11
0.9
NW
11
0.9
NW
11
0.9
NW
11
0.8
NW
11
0.7
NW
11
0.4
NW
18
0.6
WNW
16
0.8
WNW
16
0.9
WNW
15
1.2
WNW
15
1.2
WNW
15
1.3
WNW
14
1.4
WNW
14
1.4
NW
13
1.4
NW
13
Wave Graph
Metric surfscale
Energy kJ
887
835
343
376
288
283
288
259
373
202
198
194
137
110
90
177
330
409
576
568
644
700
732
721
Wind (km/h)
15
NE
15
ENE
10
E
10
ENE
10
NNE
15
N
15
N
10
E
5
E
10
ESE
5
E
10
E
10
E
10
E
0
NE
0
WSW
0
SW
5
S
5
SSW
5
SW
10
WNW
5
WNW
5
SW
10
SSE
Wind State
cross
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
glassy
glassy
cross-off
cross-off
glassy
on
cross-on
glassy
cross-off
High Tide
9:57AM2.68m
10:49PM2.44m
11:28AM2.60m
00:30AM2.45m
12:58PM2.69m
Low Tide
3:39AM1.37m
4:33PM1.37m
4:59AM1.49m
6:04PM1.39m
6:30AM1.44m
7:21PM1.23m
cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
8:22
—
—
—
—
—
—
—
8:23
—
—
—
—
—
—
—
8:25
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
7:19
—
—
—
—
—
—
—
7:16
—
—
—
—
—
—
—
7:15
—
—
 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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Temp °C
14
12
10
11
14
15
14
12
11
11
11
11
11
12
12
12
12
11
10
13
15
15
13
12
Feels °C
10
8
7
8
11
10
10
9
8
8
8
8
8
10
11
11
11
9
8
12
13
13
12
10
  • 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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