When planning a trip to San Francisco, the most frequent warning you will hear pertains to the weather. This may be California, but don’t expect to be wearing your flip flops. Summer is all about the fog, although the sun does break through—especially in neighborhoods on the eastern side of the city, such as Noe Valley and the Mission. Depending on where you’re staying, a car will probably not be necessary, as public transportation, cabs, and various rideshares will be at your service. However, car rentals are plentiful if you do want to get out of town—traditional rental companies as well as peer-to-peer car sharing services like Getaround, Zipcar, and City CarShare. If you have time, it's absolutely worth your while to make a day-trip from the city to see the gorgeous coast and wine country north of the Golden Gate Bridge.