Share: Facebook Tweet Google+. The best time to visit San Francisco is from September to November. Autumn offers warm temperatures and fewer crowds. Spring is another good time, but you can expect the breezes to have a little more bite.The Golden Gate City witnesses a surge in tourism during the summer as people head west in search of sun, sand and surf.ou can beat the tourist rush by visiting San Francisco in the spring, when the weather is mild and hotel prices have yet to rise. Average high temperatures in the mid-60s will certainly keep you from diving in to the Pacific, but you shouldn't have any limitations wandering the city on foot. Key Events: