For Rietvlei :
No gale warning.
The reliability of the situation is very good.
Good clear periods but lots of cloud, too. Light showers. In the evening, clear periods developing.
Possibility of showers WSW force 3 in the middle of the day becoming SW force 2 in the evening. Gusts reaching 16 knots in the middle of the day. Rough to very rough sea. Moderate, fairly long swell from SW. Excellent visibility becoming excellent in the evening.