San Francisco month by month

Plan your visit to San Francisco by month. Compare weather, crowds, events, and prices across all twelve months with historical climate data.

San Francisco's measured year splits into two unequal halves. From June through October, rain nearly disappears. June, July, and August each record 0 rain days, September logs 1, and October 3. Temperatures across this 5-month stretch climb from 18°C in June to 20°C by August, then hold through October. The wet half runs November through March. December sits at the extreme with 13 rain days and a 13°C high. March records 11 rain days, second only to December, at the same 14°C high as January and February. April, with 3 rain days and a 16°C high, marks the hinge.

All 12 month guides are published below. Between June and October, the shifts stay within 2°C, and rain registers at 0 to 3 days across the window. June and July hold at 18°C with 0 rain days. August through October reach 20°C. November through March is where the variation lives. December's 13 rain days and 13°C high look very different from February's 8 rain days at 14°C. November brings 7 rain days at 16°C, and March logs 11 at 14°C.

December and March stand apart from the rest of San Francisco's year. December records the lowest average high at 13°C and the heaviest rain at 13 days. March follows at 11 rain days, 3 more than January or February, though all three share a 14°C high.

December defines San Francisco's sharpest contrast, with the year's lowest average high of 13°C and its heaviest rainfall at 13 days.

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