The bar chart below shows the average monthly peak daytime temperatures at San Francisco
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 31.5 | 30.3 | 27.7 | 24.3 | 21.3 | 17.5 | 17.6 | 19.6 | 21.9 | 25 | 27.9 | 30.2 |
°F | 88.7 | 86.6 | 81.8 | 75.7 | 70.3 | 63.5 | 63.7 | 67.2 | 71.4 | 77 | 82.2 | 86.3 |
Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.
The graph below shows the average rainfall and number of rainy days per month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
mm | 107 | 105 | 152 | 77 | 50 | 24 | 20 | 23 | 49 | 81 | 94 | 127 |
inches | 4.2 | 4.1 | 6 | 3 | 2 | 0.9 | 0.8 | 0.9 | 1.9 | 3.2 | 3.7 | 5 |
Rainy days | 9 | 8 | 9 | 7 | 6 | 5 | 4 | 4 | 6 | 8 | 9 | 9 |
Average annual rainfall in San Francisco: 815.1mm (320.9 inches)
The bar chart below shows the average daily sunshine hours in San Francisco
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 9.6 | 9.3 | 8.2 | 7.5 | 6.2 | 5.3 | 6 | 7 | 7.9 | 8.2 | 9.6 | 9.4 |
The graph below shows the daily range of temperatures for each month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Min °C | 18.2 | 17.4 | 15.9 | 12.5 | 9.5 | 6 | 5.7 | 6.3 | 8.2 | 11.7 | 14.6 | 16.9 |
Max °C | 31.9 | 30.7 | 28 | 24.6 | 21.6 | 17.8 | 17.9 | 19.9 | 22.2 | 25.3 | 28.2 | 30.5 |
Min °F | 64.7 | 63.2 | 60.5 | 54.4 | 49 | 42.8 | 42.3 | 43.3 | 46.8 | 53.1 | 58.3 | 62.4 |
Max °F | 77 | 75.2 | 71.4 | 65.3 | 59.9 | 53.4 | 53.2 | 55.6 | 59.4 | 65.3 | 70.5 | 74.7 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 20.9 | 21.4 | 20.9 | 19.3 | 17.4 | 15.8 | 14.6 | 14.2 | 14.7 | 16 | 17.5 | 19.3 |
°F | 69.5 | 70.5 | 69.6 | 66.7 | 63.3 | 60.5 | 58.2 | 57.6 | 58.4 | 60.7 | 63.5 | 66.7 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 10 | 10 | 10 | 9 | 10 | 10 | 12 | 12 | 13 | 13 | 13 | 11 |
mph | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 8 | 8 | 8 | 8 | 7 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
The graph below shows the average relative humidity.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|
70% | 73% | 79% | 80% | 80% | 79% | 78% | 74% | 71% | 72% | 71% | 70% |
Hottest month: | January | 31.5°C 88.7°F |
---|---|---|
Driest month: | July | 20mm 0.8ins |
Sunniest month: | February | 9.3hrs |
Coldest month: | July | 17.6°C 63.7°F |
Wettest month: | March | 152mm 6ins |
Warmest sea: | February | 21.4°C 70.5°F |