For Mar del plata :
No gale warning.
The reliability of the situation is very good.
Good clear periods but with plenty of cloud in the morning, sunny in the afternoon. No precipitation. In the evening, skies with few clouds.
NNW force 2 turning WSW in the middle of the day then SE. Gusts reaching 10 knots in the morning. Slight sea. Low, fairly long swell from ESE. Visibility reduced by mist becoming excellent in the middle of the day then poor.