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San Francisco, California Climate & Temperature

  • San Francisco, California, Usa is at 37°37'N, 122°23'W, 5 m (16 ft). See map.
  • San Francisco, California has a warm mediterranean/ dry-summer subtropical climate that is mild with dry, warm summers and moderate seasonality. Regions with this subtype of the Mediterranean climate closely resemble an oceanic climate with generally cloudier and damper conditions than typical Mediterranean climates tho they are still susceptible to fire in the warm dry summer months. (Köppen-Geiger classification: Csb)
  • According to the Holdridge life zones system of bioclimatic classification San Francisco, California is situated in or near the warm temperate dry forest biome.
  • The annual average temperature is 14 degrees Celsius (57.2 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 8.8 °C (15.8°F). This indicates that the continentality type is hyperoceanic, subtype barely hyperoceanic. San Francisco, California Climate Graph
  • In the winter time records indicate temperatures by day reach 13.9°C (57°F) on average falling to 6.2°C (43.1°F) overnight.
  • In spring time temperatures climb reaching 17.6°C (63.7°F) generally in the afternoon with overnight lows of 8.6°C (47.5°F).
  • During summer average high temperatures are 21.9°C (71.4°F) and average low temperatures are 12.1°C (53.8°F).
  • Come autumn/ fall temperatures decrease achieving average highs of 20.4°C (68.7°F) during the day and lows of 10.8°C (51.4°F) generally shortly after sunrise.
  • Total annual Precipitation averages 500.4 mm (19.7 inches) which is equivalent to 500.4 Litres/m² (12.27 Gallons/ft²).
  • On average there are 3037 hours of sunshine per year. Visit the sunshine and daylight section to check monthly details including how high in the sky the sun reaches each month.
  • Were you to burrow down through the centre of the Earth from San Francisco, California you would pop up nearest to the climate station at Port-Aux-Francais, kerguelen islands, French Southern Lands where you would find a Tundra climate (Boreal rain forest biome).

San Francisco, California Climate Table

  Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 
Average Max Temperature °C ( °F) 13 (56) 15 (59) 16 (61) 18 (64) 19 (67) 21 (70) 22 (72) 22 (72) 23 (74) 21 (70) 17 (62) 13 (56) 19 (65)
 
Average Temperature °C ( °F) 9 (49) 11 (52) 12 (53) 13 (56) 15 (58) 16 (62) 17 (63) 18 (64) 18 (65) 16 (61) 13 (55) 10 (49) 14 (57)
 
Average Min Temperature °C ( °F) 5 (42) 7 (45) 8 (46) 8 (47) 10 (50) 11 (53) 12 (54) 13 (55) 13 (55) 11 (52) 8 (47) 6 (43) 9 (49)
 
Average Precipitation mm (in) 111 (4) 81 (3) 78 (3) 35 (1) 5 (0) 3 (0) 1 (0) 1 (0) 5 (0) 31 (1) 73 (3) 79 (3) 500 (20)
Number of Wet Days (probability of rain on a day %) 11 (35) 10 (35) 9 (29) 6 (20) 3 (10) 1 (3) 0.5 (2) 0.5 (2) 1 (3) 4 (13) 7 (23) 10 (32) 63 (17)
Average Sunlight Hours/ Day 4h 58' 6h 45' 8h 27' 9h 54' 10h 34' 11h 22' 9h 30' 8h 52' 9h 10' 7h 48' 6h 36' 5h 46' 8h 18'
Average Daylight Hours/ Day 9h 52' 10h 44' 11h 53' 13h 08' 14h 10' 14h 42' 14h 28' 13h 34' 12h 22' 11h 08' 10h 06' 9h 36' 12h 00'
Percentage of Sunny (Cloudy) Daylight Hours 51 (49) 64 (36) 72 (28) 76 (24) 75 (25) 78 (22) 66 (34) 66 (34) 75 (25) 71 (29) 66 (34) 61 (39) 69 (31)
Sun altitude at solar noon on the 21st day (°). 32.6 41.9 52.8 64.4 72.7 75.8 72.7 64.3 52.9 41.4 32.3 29 52.7

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