For Mentawai Islands :
No gale warning.
The reliability of the situation is good.
Good clear periods but lots of cloud, too. Possibility of showers In the evening, lots of good clear periods.
No precipitation. NW force 1 in the middle of the day turning W in the evening. Gusts reaching 5 knots. Moderate sea. Low, long swell from SSW. Excellent visibility becoming good in the evening.