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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Brief Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above for San Francisco’s current conditions before heading out. The city’s weather is famously variable, so a light jacket and layers are your best bet year-round, even in summer.
What is the weather like in San Francisco year round?
San Francisco has a Mediterranean climate with mild, wet winters and dry, cool summers. Unlike much of the US, summer highs often stay below 20°C due to the cold Pacific Ocean and coastal fog. Winter temperatures range from 8–15°C, with rain mostly between November and March. The warmest months are September and October, when fog is less frequent.
How do I check the forecast for the next 10 days?
Use the live forecast above for a 14-day outlook, or check a reliable site for weather in San Francisco 10 days ahead. For hourly details, the live forecast’s hourly tab shows san francisco weather hourly, helping you plan around the morning fog or afternoon breeze. Always confirm san francisco weather celsius or fahrenheit readings there.
Does San Francisco get hot or cold extremes?
Extremes are rare. The highest recorded temperature is about 41°C, but most summer days stay below 25°C. Frost is uncommon in the city itself, though inland suburbs can dip below 0°C a few nights a year. The city’s microclimates mean a 5–10°C difference between neighbourhoods is normal.
What is the best month to visit San Francisco for weather?
September and October are ideal. These months have the least fog, the warmest average highs (around 21–22°C), and lower rainfall than winter. July and August are cool and often foggy, especially near the Golden Gate Bridge.
Does it rain a lot in San Francisco?
Rainfall is moderate, averaging about 530 mm per year. The wet season runs from November to March, with January typically the wettest month. Summer months (June–August) see almost no rain.
Why is San Francisco so foggy in summer?
The cold California Current offshore cools the air, which condenses into fog when it meets warm inland air. This “marine layer” is pulled into the city by the pressure difference between the ocean and the hot Central Valley, creating the city’s iconic summer fog.
Sources
For Australian conditions, see our Australia weather hub or check severe weather warnings. If you are comparing climates, our Weather In Tokyo Today page shows a different coastal pattern.