A westerly, strong and mostly variable flow prevails over the whole area.
For Guéthary :
Warning moderate gale offshore.
We are 80% sure of the situation, because hail may not be as easy to predict.
Skies very cloudy, becoming totally overcast during the morning, very cloudy with possibility of thunder storms in the afternoon. Some light showers in the morning, showers with possibility of hail in the afternoon. In the evening, very cloudy with risk of storms.
Light showers. SW force 4 freshening W force 6 in the middle of the day then force 5. Gusts reaching 37 knots in the middle of the day. Moderate sea becoming rough in the middle of the day. Moderate, fairly long swell from SW. Excellent visibility.