For Mentawai Islands :
No gale warning.
The reliability of the situation is good.
Sun and storm clouds in the morning,storms gradually improving in the afternoon. Showers all day. In the evening, cloudy spells, sometimes dense.
Risk of showers in the early hours. NNW force 1 in the morning turning NE in the evening. Gusts reaching 5 knots in the morning. Moderate sea. Moderate, fairly long swell from SSW. Good visibility becoming good in the middle of the day then poor.