Point Magoo is OK but small. It is just a rock in a parking lot off of PCH.
Corona del mar, though south, is next to the water and is a lot better. It is primarly an afternoon area because of sunbathers. five pm is a good time to get there. It is about an hour south on the 405 without traffic. Two hours is more realistic the way things are here. It is in no way as hot as the valley. More like twenty to thirty degrees cooler, sandy landings and a cool location too.