San Ramón monthly weather averages
Average daytime temperature
The bar chart below shows the average monthly peak daytime temperatures at San Ramón
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 27.1 | 27.1 | 27.1 | 27.2 | 26.4 | 25.7 | 25.3 | 25.7 | 26 | 26.3 | 26.9 | 27.1 |
| °F | 80.7 | 80.8 | 80.9 | 80.9 | 79.6 | 78.3 | 77.5 | 78.3 | 78.7 | 79.3 | 80.4 | 80.8 |
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.
Average rainfall & rainy days
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 | 249 | 236 | 240 | 190 | 107 | 68 | 72 | 64 | 132 | 174 | 142 | 211 |
| inches | 9.8 | 9.3 | 9.5 | 7.5 | 4.2 | 2.7 | 2.8 | 2.5 | 5.2 | 6.9 | 5.6 | 8.3 |
| Rainy days | 14 | 14 | 13 | 10 | 8 | 4 | 5 | 5 | 8 | 10 | 10 | 12 |
Average annual rainfall in San Ramón: 1797.6mm (707.7 inches)
Average daily sunshine
The bar chart below shows the average daily sunshine hours in San Ramón
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 5.1 | 4.9 | 5.4 | 6.1 | 6 | 5.4 | 5.5 | 5.7 | 5.3 | 5.5 | 5.7 | 5.5 |
Day / night temperatures
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 | 16.9 | 17.1 | 16.8 | 16 | 14.9 | 13.2 | 12.6 | 13.2 | 14.4 | 14.9 | 15.9 | 16 |
| Max °C | 27.3 | 27.4 | 27.4 | 27.5 | 26.7 | 26 | 25.6 | 26 | 26.3 | 26.6 | 27.2 | 27.4 |
| Min °F | 62.4 | 62.7 | 62.2 | 60.7 | 58.8 | 55.8 | 54.7 | 55.8 | 57.8 | 58.7 | 60.5 | 60.8 |
| Max °F | 71.8 | 72 | 71.8 | 71.1 | 69.4 | 67.3 | 66.4 | 67.3 | 68.5 | 69.3 | 70.7 | 71.1 |
Sea temperature
The graph below shows the average sea temperature.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 22.4 | 22.8 | 22.1 | 20.6 | 19.6 | 18.8 | 18 | 17.5 | 17.6 | 18.1 | 19.2 | 20.8 |
| °F | 72.3 | 73.1 | 71.8 | 69.2 | 67.3 | 65.8 | 64.4 | 63.5 | 63.6 | 64.6 | 66.6 | 69.4 |
Wind speed
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 8 | 7 | 8 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 |
| mph | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 5 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
Relative humidity
The graph below shows the average relative humidity.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 76% | 77% | 78% | 76% | 74% | 74% | 73% | 72% | 73% | 75% | 73% | 75% |
Other monthly averages
San Ramón weather stats
| Hottest month: | February | 27.1°C 80.8°F |
|---|---|---|
| Driest month: | August | 64mm 2.5ins |
| Sunniest month: | May | 6hrs |
| Coldest month: | July | 25.3°C 77.5°F |
| Wettest month: | January | 249mm 9.8ins |
| Warmest sea: | February | 22.8°C 73°F |
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