For Trevou-Treguignec :
No gale warning.
For the night from Saturday to Sunday NE force 1 in the early part of the night becoming ENE force 2. Gusts reaching 13 knots in the early part of the night.
Slight sea. Low, fairly long swell from WNW. Excellent visibility becoming good in the middle of the night then good. Daytime of Sunday 20 september : The weather will be good.
Sunny despite some cloudy spells but no rain. In the evening, cloud and long sunny periods.
No precipitation. ENE force 2 becoming force 3 in the middle of the day then NE. Gusts reaching 16 knots in the evening. Slight sea. Low, fairly long swell from WNW. Poor visibility becoming excellent in the middle of the day then excellent.