For Mentawai Islands :
No gale warning.
The reliability of the situation is good.
Good clear periods alternating with cloudy spells, sometimes dense. No precipitation. In the evening, cloudy spells, sometimes dense.
Risk of showers in the early hours. NNW force 3 in the morning turning W in the evening. Gusts reaching 12 knots in the middle of the day. Moderate sea. Moderate, fairly long swell from SSW then low in the middle of the day then from SSW. Excellent visibility becoming excellent in the middle of the day then good.