For Cape Horn :
Warning strong breeze.
The reliability of the situation is very good.
Very cloudy skies with short clear spells. Light showers all day. In the evening, good clear periods but cloud building.
Possibility of showers NNW force 5 turning W force 6 in the middle of the day then WNW. Gusts reaching 33 knots in the evening. Rough sea. Moderate, fairly long swell from WSW. Excellent visibility.