San Francisco Weather in January

Thinking of visiting San Francisco in January? Expect high temperatures reaching 22°C (72°F) during the day, dropping to 13°C (55°F) at night. Heavy showers are common during the rainy season.

Rainfall in San Francisco in January

As part of the rainy season, San Francisco sees around 10 days of rain in January, with an average of 200 mm (7.9 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.

Temperature in San Francisco in January

Daytime temperatures in San Francisco reach 22°C (72°F) in January, dropping to 13°C (55°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights cool down to 13°C (55°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in San Francisco in January

The area enjoys a balanced 156 hours of sunlight, ensuring it's neither too rainy nor too sunny.

If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for San Francisco.