When to Go San Francisco enjoys a temperate climate but does experience a great deal of fog. While there may be rain December through February there will also be many clear, gorgeous days with temperatures in the 50s and little fog. From March through June and September through October on average you will enjoy temperatures a bit warmer and clear sunny days. If you visit during summer be aware that this can be the worst time for fog with clear skies making appearances every few days. During the summer months many of the neighborhoods around the city host street fairs. Contact the chamber of commerce to find out about specific dates. In September, there is a blues festival held at Ft. Mason Center. Also, the San Francisco Jazz Festival is a two-week, citywide celebration from the end of October through early November. What to Take San Francisco may be gorgeous during the day and then a cold wind will undoubtedly pick up in the late afternoon with chilly temperatures prevailing in the evenings. Don't go anywhere without bringing a windbreaker or a light jacket during the day and a heavier one if you know you are going to still be out when darkness falls. As far as clothing goes, casual attire is appropriate for all daytime activities but you'll want to bring some dressier attire for restaurants and clubs. Also, pack comfortable shoes because you will find yourself walking from neighborhood to neighborhood and traversing many steep, hilly streets. Time Zone San Francisco lies in the Pacific Time Zone (Greenwich Mean Time minus eight hours). During the spring and summer months, San Francisco, like all of California, observes Daylight Savings Time.