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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Public Journal weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
San Francisco’s weather today, as shown in the live forecast above, is typical of its coastal microclimate: cool, often foggy, and breezy, with temperatures rarely straying far from the mid-teens Celsius. The city’s famous summer fog, or “Karl,” often rolls in from the Pacific, making a jacket essential even on sunny afternoons.
What is the typical weather pattern for San Francisco?
San Francisco sits on a peninsula, surrounded by the Pacific Ocean and San Francisco Bay, which keeps its climate mild year-round. Unlike inland California, it rarely sees extreme heat or cold. The dry season runs from May to October, with fog common in the mornings and evenings. Winters are cooler and wetter, with rain arriving from November to March. For a comparison with a sunnier Californian city, see our UK weather hub for broader context on coastal climates.
How does San Francisco’s weather compare to other US cities?
While San Francisco stays cool, cities like Los Angeles and Yosemite experience far more heat. For those checking bbc weather los angeles, expect temperatures often 10–15°C warmer, with less fog. Meanwhile, bbc weather yosemite shows a mountain climate with hot summers and snowy winters, a stark contrast to the Bay Area’s maritime influence. Travelers should pack layers for San Francisco regardless of the season.
Why is San Francisco so foggy in summer?
The cold California Current offshore cools the air, while warm inland air rises, drawing the fog inland through the Golden Gate. This natural air-conditioning keeps the city cool when the rest of the state bakes.
Does San Francisco get snow?
Snow is extremely rare. The city has recorded only a few trace snowfalls in the past century, usually in January. The surrounding hills, like Mount Tamalpais, may see a dusting once every few years.
What is the best time to visit for clear skies?
September and October often offer the warmest, sunniest weather, with less fog and temperatures reaching the low 20s°C. Spring (April–May) is also pleasant, though mornings can be chilly.
For more UK-focused forecasts, check our 10 Day Weather Forecast UK or see how conditions compare in Bristol Weather.