San Francisco’s weather is as unique and unpredictable as the city itself, offering a mix of mild temperatures and famously fickle microclimates. Daytime highs typically range from 15–20°C year-round, with cooler evenings that often dip to 10–12°C, so layering is always your best friend.
Summer brings sunshine, but don’t expect classic heat—this is fog season! The iconic marine layer, affectionately known as Karl the Fog, sweeps in during the morning and evening, wrapping the city in a cool, misty embrace while the afternoons usually brighten up. Fall is the warmest and sunniest time of year, with crisp, clear skies perfect for exploring neighborhoods or taking in Golden Gate views.
Winter and spring are mild, with light rain showers and temperatures hovering between 10–15°C. The city’s hilly streets stay lush and green, and the occasional sunny day feels like a surprise gift. Whether wrapped in fog or sparkling in the sun, San Francisco’s weather is always part of the adventure.