A southwesterly, moderate and mostly variable flow prevails over the whole area.
For Tregastel :
No gale warning.
We are 85% sure of the situation, because the atmosphere might be less unstable and showers more frequent than forecast.
Cloudy spells, sometimes dense. Chance of light rain. In the evening, cloudy spells, sometimes dense.
Chance of light rain. WSW wind force 4 from the middle of the day. Gusts reaching 18 knots in the middle of the day. Slight sea. Low, fairly long swell from WNW. Good visibility becoming excellent in the evening.