For Trestraou :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Overcast with reduced visibility in the morning, very cloudy skies to overcast in the afternoon. Drizzle in the morning, light showers dying away progressively in the afternoon. In the evening, very cloudy.
Light showers progressively becoming less frequent. SW force 4 in the morning turning W force 5 in the middle of the day. Gusts reaching 40 knots in the evening. Slight sea becoming moderate in the evening. Low, fairly long swell from WNW. Visibility reduced by mist becoming poor in the middle of the day then excellent.