A southeasterly and variable flow prevails over the North-West of the basin. Over the South and the East, it is northwesterly, moderate and variable.
For Trébeurden :
No gale warning.
The reliability of the situation is assessed at 90%.
For the night from Monday to Tuesday NNE wind force 3 continuing all night. Gusts reaching 11 knots in the middle of the night.
Smooth to slight sea becoming slight at the end of the night. Low, fairly long swell from NW. Excellent visibility becoming good at the end of the night. Daytime of Tuesday 20 may : The weather will be good.
Little cloud in the morning, skies becoming progressively hazier during the afternoon. No precipitation. In the evening, cloudy spells, sometimes dense.
No precipitation. NE force 3 in the morning turning NW force 2 in the evening. Gusts reaching 12 knots in the morning. Slight sea. Low, fairly long swell from WNW. Good visibility becoming excellent in the middle of the day then excellent.