there are seasons for every event in SF; summer is great for chilling out in the sun and taking good photo shots; autumn -oct, nov- is the opera season, and of course the halloween crazy balls.
so be prepared, and plan ahead when and why you want to visit SF. for me, wish i came here over the summer for clearer sky and sleeveless shirts:Din Golden Gate Park, it was very foggy that i could hardly seen a tower behind the fog. it's not my fondest memory but the foggest!

