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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Norwich Wire weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above shows San Francisco’s current temperature and conditions. Typical daytime highs range 14–22°C year-round, with fog and wind shaping the city’s microclimate. Expect cooler, breezier afternoons near the Golden Gate than inland neighbourhoods.
What is the typical weather pattern in San Francisco?
San Francisco has a mild Mediterranean climate with dry summers and wet winters. Average highs in January hover around 14°C, while September often reaches 22°C. Fog is most persistent from June through August, rolling in from the Pacific and often burning off by midday. Rainfall is concentrated between November and March, averaging about 600mm annually.
How does fog affect the forecast?
Fog can drop visibility below 400m and make temperatures feel 5–8°C cooler than inland suburbs. The fog layer typically clears by late morning but can return in the evening. If you’re comparing conditions, bbc weather los angeles usually shows warmer and sunnier skies, while San Francisco’s coast remains cooler and mistier.
Why is San Francisco so foggy?
Cold ocean currents off the California coast cool the marine air, which condenses into fog when it meets warmer land. The city’s hills and bay shape the fog’s movement, making it a near-daily feature in summer.
What is the best time to visit for clear skies?
September and October often have the least fog and warmest temperatures. Spring (April–May) also offers mild, often sunny conditions before the summer fog sets in. Winter brings rain but fewer crowds.
How does San Francisco weather compare to Yosemite?
Yosemite is inland and at higher elevation, so it has colder winters, hotter summers, and less fog. For mountain conditions, check bbc weather yosemite – it can be 10–15°C cooler than the city at night even in summer.
For UK forecasts, visit our weather hub or check the 10 Day Weather Forecast UK.