San Francisco weather by month

Check out San Francisco weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in San Francisco (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
55°F maximum daytime temperature in January in San Francisco55
61°F maximum daytime temperature in February in San Francisco61
61°F maximum daytime temperature in March in San Francisco61
63°F maximum daytime temperature in April in San Francisco63
64°F maximum daytime temperature in May in San Francisco64
66°F maximum daytime temperature in June in San Francisco66
68°F maximum daytime temperature in July in San Francisco68
68°F maximum daytime temperature in August in San Francisco68
72°F maximum daytime temperature in September in San Francisco72
70°F maximum daytime temperature in October in San Francisco70
63°F maximum daytime temperature in November in San Francisco63
57°F maximum daytime temperature in December in San Francisco57
Min temperature (night-time)
45°F minimum night-time temperature in January in San Francisco45
46°F minimum night-time temperature in February in San Francisco46
46°F minimum night-time temperature in March in San Francisco46
48°F minimum night-time temperature in April in San Francisco48
50°F minimum night-time temperature in May in San Francisco50
52°F minimum night-time temperature in June in San Francisco52
54°F minimum night-time temperature in July in San Francisco54
55°F minimum night-time temperature in August in San Francisco55
55°F minimum night-time temperature in September in San Francisco55
54°F minimum night-time temperature in October in San Francisco54
50°F minimum night-time temperature in November in San Francisco50
45°F minimum night-time temperature in December in San Francisco45
Heat & Humidity
No heat & humidity in January in San Francisco0
No heat & humidity in February in San Francisco0
No heat & humidity in March in San Francisco0
No heat & humidity in April in San Francisco0
No heat & humidity in May in San Francisco0
No heat & humidity in June in San Francisco0
No heat & humidity in July in San Francisco0
No heat & humidity in August in San Francisco0
No heat & humidity in September in San Francisco0
No heat & humidity in October in San Francisco0
No heat & humidity in November in San Francisco0
No heat & humidity in December in San Francisco0
Sea temperature
52°F sea temperature in January in San Francisco52
52°F sea temperature in February in San Francisco52
54°F sea temperature in March in San Francisco54
54°F sea temperature in April in San Francisco54
52°F sea temperature in May in San Francisco52
54°F sea temperature in June in San Francisco54
55°F sea temperature in July in San Francisco55
57°F sea temperature in August in San Francisco57
57°F sea temperature in September in San Francisco57
57°F sea temperature in October in San Francisco57
55°F sea temperature in November in San Francisco55
54°F sea temperature in December in San Francisco54

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in San Francisco

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in San Francisco10
11 hours of daylight per day in February in San Francisco11
12 hours of daylight per day in March in San Francisco12
13 hours of daylight per day in April in San Francisco13
14 hours of daylight per day in May in San Francisco14
15 hours of daylight per day in June in San Francisco15
14 hours of daylight per day in July in San Francisco14
14 hours of daylight per day in August in San Francisco14
12 hours of daylight per day in September in San Francisco12
11 hours of daylight per day in October in San Francisco11
10 hours of daylight per day in November in San Francisco10
10 hours of daylight per day in December in San Francisco10
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in San Francisco2
UV (maximum) index 3 (Moderate) in February in San Francisco3
UV (maximum) index 5 (Moderate) in March in San Francisco5
UV (maximum) index 7 (High) in April in San Francisco7
UV (maximum) index 8 (Very High) in May in San Francisco8
UV (maximum) index 9 (Very High) in June in San Francisco9
UV (maximum) index 9 (Very High) in July in San Francisco9
UV (maximum) index 9 (Very High) in August in San Francisco9
UV (maximum) index 7 (High) in September in San Francisco7
UV (maximum) index 5 (Moderate) in October in San Francisco5
UV (maximum) index 3 (Moderate) in November in San Francisco3
UV (maximum) index 2 (Low) in December in San Francisco2

Rainfall in San Francisco

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
10 days with some rainfall in January in San Francisco10
9 days with some rainfall in February in San Francisco9
11 days with some rainfall in March in San Francisco11
6 days with some rainfall in April in San Francisco6
3 days with some rainfall in May in San Francisco3
1 day with some rainfall in June in San Francisco1
1 day with some rainfall in July in San Francisco1
1 day with some rainfall in August in San Francisco1
2 days with some rainfall in September in San Francisco2
4 days with some rainfall in October in San Francisco4
8 days with some rainfall in November in San Francisco8
10 days with some rainfall in December in San Francisco10
Average monthly rainfall (inches)
4.9 inches monthly rainfall in January in San Francisco4.9
3.6 inches monthly rainfall in February in San Francisco3.6
3.5 inches monthly rainfall in March in San Francisco3.5
1.6 inches monthly rainfall in April in San Francisco1.6
0.3 inches monthly rainfall in May in San Francisco0.3
0.2 inches monthly rainfall in June in San Francisco0.2
0.0 inches monthly rainfall in July in San Francisco0.0
0.1 inches monthly rainfall in August in San Francisco0.1
0.3 inches monthly rainfall in September in San Francisco0.3
1.4 inches monthly rainfall in October in San Francisco1.4
3.5 inches monthly rainfall in November in San Francisco3.5
3.8 inches monthly rainfall in December in San Francisco3.8

More about San Francisco

San Francisco by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for California (San Francisco) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in San Francisco?

San Francisco has a temperate climate with warm dry summers.

Metric (°C)  |  Imperial (°F)

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Tropical storm risk: San Francisco, California hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
0
0
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

TUI: up to 7% off holidays booked online

  • Book online with TUI & save up to 7% on holidays
  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost
Go to TUI deal >>

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More about San Francisco

Compare San Francisco with the USA

Below the San Francisco chart shows average maximum daytime temperature for San Francisco, California, USA and the USA (Washington).

Maximum daytime temperature (°F)

San Francisco, California, USA
USA (Washington)
55
41
61
45
61
55
63
66
64
75
66
84
68
88
68
86
72
79
70
68
63
57
57
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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