Nevertheless, there are some common patterns with the weather in San Francisco. Is San Francisco the only foggy town in the Bay Area? No.Daly City, just south of SF is worse and the oceanside town of Pacifica, just minutes down Highway 1 from San Francisco, is the foggiest of all. The warmest and sunniest parts of the city? The Mission District and Potrero Hill on the eastern side, sheltered by the hills. The areas popular with tourists tend to be in the sunnier part, like Fisherman's Wharf and Union Square, but Golden Gate Park, the zoo, the Cliff House and Ocean Beach are often socked in May, June and July. There can be a 10 degree difference between downtown San Francisco and the Avenues, out by the beach.

But even within San Francisco there are noticeable differences in temperature and sun. The bay counties surrounding SF get very warm in summer, often really hot, and see sunny skies every day, while San Francisco sits in its cool, foggy spot all summer. The hoodie vendors on Fisherman's Wharf do a brisk business! (I would ditch the shorts.) Best Months for Weather in San Francisco Where's the Sun? But an hour later, the fog may burn off and it's getting warm, so a t-shirt or light long-sleeved shirt would be more comfortable. A jacket or sweatshirt with a hood is the best outer layer the wind can be cold and strong when the fog starts to come in. What to Wearīecause the weather in San Francisco is so changeable, the best solution is to dress in layers. Note: Fog season is May, June and July, and often August, but mainly out in the western part of SF. The entire rest of the year, May through October, only gets about 5% of the annual rainfall.Ĭonsequently, if you come when most people visit, May through October, your chance of having your vacation ruined by precipitation is very low (so you don't have to carry an umbrella around). April is iffy often sunny and warm, but can get rain. Being that San Francisco has a quasi-Mediterranean climate, 80% of the rain falls in 5 months, November through March.

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