For Koumac :
No gale warning.
The reliability of the situation is good.
Sun but cloud increasing in the morning, high, thick cloud cover in the afternoon. No precipitation. In the evening, hazy cloud thickening.
No precipitation. ENE force 3 in the morning temporarily S in the middle of the day. Gusts reaching 16 knots from the middle of the day. Moderate sea. Low, fairly long swell from S. Visibility reduced by mist becoming excellent in the middle of the day then poor.