San Francisco, USA: Annual Weather Averages

July is the hottest month in San Francisco with an average temperature of 14°C (57°F) and the coldest is January at 10°C (50°F) with the most daily sunshine hours at 14 in July. The wettest month is January with an average of 119mm of rain. The best month to swim in the sea is in August when the average sea temperature is 15°C (59°F).

Average Temperature: San Francisco

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10 11 11 11 13 13 14 14 14 14 13 10
°F 50 52 52 52 55 55 57 57 57 57 55 50

Average High/Low Temperature: San Francisco

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High °C 13 15 16 17 17 19 23 22 21 20 17 13
High °F 55 59 61 63 63 66 73 72 70 68 63 55
Low °C 7 8 9 10 10 11 15 14 13 12 10 8
Low °F 45 46 48 50 50 52 59 57 55 54 50 46

Average Rainfall: San Francisco

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 119 97 79 38 18 3 0 0 8 25 64 112
Days 11 11 10 6 4 2 0 0 2 4 7 10

Average Daily Sunshine Hours: San Francisco

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hours 7 7 9 10 11 12 14 12 11 9 8 6

Average Sea Temperature: San Francisco

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 13 12 12 12 12 13 14 15 15 15 14 13
°F 55 54 54 54 54 55 57 59 59 59 57 55
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