When to go
The Best Time to Visit San Francisco
Month-by-month climate data for San Francisco, United States — daily highs and lows, rain days, and an honest verdict for every month of the year.
Timing is the first real decision when planning San Francisco— it drives crowds, prices and what's actually open. Here's how the year breaks down so you can pick dates that fit the trip you're building, not just the weather.
Warmest in San Francisco: Oct (21°C / 70°F) · Coolest: Dec (13°C / 55°F) · Wettest: Dec (~12 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
San Francisco climate, month by month
January
14° / 8°C
~10 rain days
Good
February
15° / 8°C
~6 rain days
Excellent
March
14° / 9°C
~10 rain days
Good
April
15° / 10°C
~3 rain days
Excellent
May
17° / 11°C
~3 rain days
Excellent
June
19° / 13°C
~0 rain days
Excellent
July
19° / 13°C
~0 rain days
Excellent
August
20° / 14°C
~0 rain days
Excellent
September
20° / 14°C
~1 rain days
Excellent
October
21° / 13°C
~3 rain days
Excellent
November
16° / 10°C
~6 rain days
Excellent
December
13° / 8°C
~12 rain days
Good
Plan around it
Dates locked in? Start from the San Francisco travel guide or jump straight to a 3-day, 5-day or 7-day itinerary.