For Ilha Grande :
No gale warning.
The reliability of the situation is very good.
Very cloudy skies to overcast. Light showers all day. In the evening, very cloudy skies to overcast.
Light, intermittent drizzle. SW force 5 in the morning temporarily force 4 in the middle of the day. Gusts reaching 22 knots in the morning. Moderate sea becoming rough in the evening. Low, fairly long swell from S then moderate, short swell in the middle of the day then from SSW. Excellent visibility.