Guethary - Les Alcyons/Avalanche Surf Forecast

/ La Cote Basque (36 surf breaks) /

France (410 surf breaks) / Lat Long: (43.43° N 1.62° W)

Surf Forecasts:

Guethary - Les Alcyons/Avalanche surfForecast / La Cote Basque / France

48hr Weather and Surf, issued 1 am Monday 01 Sep 2025 CEST

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 22.7° C
(Which is 1.5°C warmer than normal for this time of year)

How big are the waves at Guethary - Les Alcyons/Avalanche today?

The current surf forecast for Guethary - Les Alcyons/Avalanche at 5AM is: 3.0m 12s primary swell from a Northwest direction (forecast issued at 01:00am September 01). The wind direction is predicted to be cross-onshore.

Time (CEST) & Date	Wave Height	Wave Period
Morning (01 Sep)	10ft (3.0m)	12s
Afternoon (01 Sep)	10ft (3.0m)	12s
Evening (01 Sep)	11ft (3.5m)	12s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

		Monday 01								Tuesday 02								Wednesday 03
	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	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM
Rating (10 max)	3	3	2	1	0	0	0	2	2	3	4	4	4	2	2	2	3	4	4	4	3	3	0	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	NW	NW	NW	NW	WNW	WNW	WNW	WNW	WNW	WNW	NW	WNW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW
Period(s) (?)	12	12	12	12	13	12	12	12	13	13	13	12	12	12	12	11	11	11	11	10	10	10	10	10
Wave Graph (?)
Energy (?)	1829	2138	2367	2405	2742	3119	3569	3235	2901	2830	2631	2237	1912	1735	1573	1565	1692	1661	1377	1204	953	800	678	625
Wind (km/h)	WSW	WSW	WSW	W	W	W	WNW	WNW	WSW	SW	SSW	S	S	W	NNW	W	SW	SSW	S	SE	ESE	SSW	NNW	WNW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross	cross	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross	cross- off	cross- off	cross- off	cross- on	on	cross- on	cross	cross- off	cross- off	off	off	glass	on	on
High Tide / height (m)	10:35PM 2.55					11:14AM 2.56				12:12AM 2.44				1:01PM 2.56				1:55AM 2.54					2:24PM 2.76
Low Tide / height (m)			4:58AM 1.45					5:52PM 1.46				6:31AM 1.51				7:28PM 1.40				7:57AM 1.36

		Monday 01								Tuesday 02								Wednesday 03
Sunrise	-	-	-	7:28	-	-	-	-	-	-	-	7:30	-	-	-	-	-	-	-	7:31	-	-	-	-
Sunset	-	-	-	-	-	-	-	8:42	-	-	-	-	-	-	-	8:40	-	-	-	-	-	-	-	8:38

Rain (mm)	1	1	2	2	3	1	1	-	1	1	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	18	17	17	17	18	20	20	19	18	18	17	17	20	23	23	21	19	18	18	17	22	29	26	22
Feels °C (?)	18	16	15	14	14	15	15	17	17	16	16	16	19	20	21	20	18	18	18	16	20	29	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)

Recent Eyeball Surf Reports for La Cote Basque

Wind Update Continuing clean conditions at Guethary - Les Alcyons/Avalanche (calm at Biarritz/Anglet Airport 9 km from Guethary - Les Alcyons/Avalanche). A 2.7m groundswell from the WNW
1 hour 3 minutes ago Guethary - Les Alcyons/Avalanche

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1 h 3 min ago

4 km/h

SSW

Clean

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