For Trestraou :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Clear skies. In the evening, relatively cloudless skies clearing.
NNE wind force 4 from the middle of the day. Gusts reaching 22 knots in the evening. Smooth to slight sea becoming slight in the evening. Low, fairly long swell from NW. Good visibility becoming good in the evening.