I don't want to give the impression that the Pacific coast off San Francisco is constantly fogged in. We went out to the Sutro Baths this past Saturday in hopes of seeing some migrating whales. We saw one ambiguous splash but the view was beautiful.
There were an unusual number of small boats out at sea and also an unusual number of small planes above us. Presumably they had all read the same whale watching article in the Chronicle that we had. It was clear enough to see the Farallon Islands which are 30 miles away.
Here's a closer view.