Last updated: May 6, 2024
Under the Köppen–Geiger climate classification San Francisco features a tropical rainforest climate (Af).Temperatures typically range between 26 °C (80 °F) and 28 °C (82 °F) through the year, but rarely can drop to 24 °C (75 °F) or can rise to as high as 31 °C (88 °F).The average annual precipitation amounts to about 2333 mm (91.8 inches) and receives 245 rainy days on the 1 mm (0.04 inches) threshold annually.San Francisco enjoys an average of 3330 hours of sunshine throughout the year, and daylight varies from 11 hours 30 minutes to 12 hours 43 minutes per day.
The warmest months in San Francisco are May, June and August, with daily mean temperatures ranging from 28 to 28 °C (82 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 26 to 27 °C (80 - 80 °F) throughout the day. On average each year, San Francisco experiences 329 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | 29°C (85°F) | 29°C (85°F) | 30°C (86°F) | 30°C (87°F) | 31°C (88°F) | 30°C (87°F) | 30°C (87°F) | 30°C (86°F) | 30°C (86°F) | 30°C (86°F) | 30°C (86°F) | 30°C (86°F) |
Mean maximum | 29°C (85°F) | 29°C (84°F) | 29°C (85°F) | 30°C (86°F) | 30°C (87°F) | 30°C (86°F) | 30°C (86°F) | 30°C (86°F) | 29°C (85°F) | 29°C (85°F) | 30°C (86°F) | 30°C (86°F) |
Average high | 28°C (82°F) | 28°C (82°F) | 28°C (83°F) | 28°C (84°F) | 29°C (84°F) | 29°C (84°F) | 28°C (83°F) | 29°C (84°F) | 28°C (83°F) | 28°C (83°F) | 28°C (83°F) | 28°C (83°F) |
Daily mean | 26°C (80°F) | 26°C (80°F) | 27°C (80°F) | 27°C (81°F) | 28°C (82°F) | 28°C (82°F) | 27°C (82°F) | 28°C (82°F) | 27°C (82°F) | 27°C (81°F) | 27°C (82°F) | 27°C (81°F) |
Average low | 26°C (78°F) | 25°C (78°F) | 26°C (78°F) | 26°C (79°F) | 27°C (81°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 26°C (80°F) | 26°C (80°F) | 26°C (79°F) |
Mean minimum | 25°C (77°F) | 24°C (76°F) | 25°C (77°F) | 25°C (78°F) | 26°C (79°F) | 26°C (78°F) | 25°C (78°F) | 25°C (78°F) | 25°C (78°F) | 25°C (78°F) | 25°C (78°F) | 25°C (77°F) |
Minimum | 24°C (75°F) | 24°C (75°F) | 24°C (76°F) | 25°C (77°F) | 25°C (78°F) | 25°C (77°F) | 25°C (78°F) | 25°C (78°F) | 25°C (77°F) | 25°C (77°F) | 24°C (75°F) | 24°C (75°F) |
Compare temperature, precipitation, sunshine, UV index in San Francisco, Central Visayas, Philippines with other places around the world.
San Francisco usually has the most precipitation in June, July and October, with an average of 27 rainy days and 285 mm (11.2 inches) of precipitation per month.The driest months in San Francisco are February, March and April. On average, 78 mm (3.1 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 194 (7.6) | 93 (3.6) | 73 (2.9) | 67 (2.6) | 122 (4.8) | 279 (11.0) | 288 (11.3) | 224 (8.8) | 249 (9.8) | 288 (11.3) | 179 (7.0) | 276 (10.9) |
Average precipitation days (≥ 1 mm) | 17 | 11 | 12 | 10 | 23 | 26 | 28 | 24 | 25 | 27 | 22 | 20 |
The sunniest months in San Francisco are March, April and May, when the sun shines an average of 10 hours 8 minutes a day.Least sunny months in San Francisco: January, February and December receive an average of 8 hours 10 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 220 | 261 | 305 | 307 | 319 | 285 | 281 | 282 | 273 | 267 | 263 | 261 |
Mean daily daylight hours | 11h 33m | 11h 46m | 12h 3m | 12h 21m | 12h 35m | 12h 43m | 12h 39m | 12h 26m | 12h 9m | 11h 52m | 11h 37m | 11h 30m |
San Francisco experiences the highest level of ultraviolet (UV) radiation in March, April and September, when the maximum UV index can reach values of 14 - 16, which corresponds to the Extreme category of sun exposure.January, November and December are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 12. For more detailed information, check out our hourly San Francisco UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
UV Index (month maximum) | 12 | 14 | 16 | 16 | 14 | 13 | 13 | 14 | 14 | 13 | 12 | 11 |