California, United States · 37.77°N, 122.42°W · America/Los Angeles

San Francisco has a cool Mediterranean climate, unusually mild year-round. Highs run about 15°C in January and only 20°C in July, with lows of 8°C and 13°C, so summer is cooler than many visitors expect. Cold Pacific currents create fog and chilly sea breezes, especially in summer, while inland California bakes.

The warmest weather arrives in September and October, when the fog retreats. Both frost and temperatures above 30°C are rare, and the seasonal range is remarkably small.

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