For Mentawai islands :
No gale warning.
The reliability of the situation is very good.
Very cloudy with risk of storms. Showers. In the evening, very cloudy with risk of storms.
Light showers progressively becoming less frequent. E force 2 in the middle of the day turning NE force 1 in the evening. Gusts reaching 7 knots in the middle of the day. Slight sea. Low, long swell from SW. Good visibility becoming poor in the evening.