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 | 31.6 | 31 | 31.2 | 31.6 | 31.3 | 29.6 | 31 | 33.7 | 34.2 | 34 | 32.9 | 31.8 |
| °F | 88.9 | 87.9 | 88.2 | 88.9 | 88.3 | 85.2 | 87.9 | 92.6 | 93.6 | 93.2 | 91.1 | 89.2 |
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 | 252 | 215 | 192 | 120 | 65 | 21 | 23 | 34 | 47 | 100 | 171 | 205 |
| inches | 9.9 | 8.5 | 7.6 | 4.7 | 2.6 | 0.8 | 0.9 | 1.3 | 1.9 | 3.9 | 6.7 | 8.1 |
| Rainy days | 17 | 16 | 15 | 10 | 7 | 4 | 3 | 3 | 6 | 9 | 11 | 15 |
Average annual rainfall in San Ramón: 1366mm (537.8 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 | 5.3 | 5.2 | 5.5 | 6.2 | 6.5 | 7.1 | 7.9 | 7.6 | 6.9 | 6.5 | 6.8 | 5.6 |
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 | 23 | 22.8 | 23 | 22.4 | 21.1 | 18.4 | 17.9 | 19.8 | 21.7 | 22.8 | 22.9 | 22.8 |
| Max °C | 31.8 | 31.3 | 31.4 | 31.9 | 31.5 | 29.9 | 31.4 | 34 | 34.6 | 34.3 | 33.1 | 32 |
| Min °F | 73.4 | 73 | 73.4 | 72.2 | 70 | 65 | 64.1 | 67.6 | 71 | 73 | 73.2 | 73 |
| Max °F | 81.3 | 80.6 | 81 | 80.8 | 79.3 | 75.4 | 76.3 | 80.4 | 82.6 | 83.3 | 82.4 | 81.3 |
Sea temperature
The graph below shows the average sea temperature.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 24.3 | 24.6 | 24.1 | 23 | 21.8 | 20.7 | 19.8 | 19.4 | 19.7 | 20.4 | 21.6 | 23 |
| °F | 75.7 | 76.3 | 75.4 | 73.4 | 71.2 | 69.3 | 67.7 | 67 | 67.5 | 68.8 | 70.9 | 73.3 |
Wind speed
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 12 | 10 | 9 | 9 | 9 | 9 | 10 | 12 | 13 | 13 | 12 | 12 |
| mph | 7 | 7 | 6 | 5 | 6 | 6 | 6 | 7 | 8 | 8 | 7 | 7 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 83% | 84% | 82% | 80% | 80% | 79% | 73% | 71% | 71% | 75% | 78% | 81% |
Other monthly averages
San Ramón weather stats
| Hottest month: | October | 34°C 93.2°F |
|---|---|---|
| Driest month: | June | 21mm 0.8ins |
| Sunniest month: | July | 7.9hrs |
| Coldest month: | June | 29.6°C 85.3°F |
| Wettest month: | January | 252mm 9.9ins |
| Warmest sea: | February | 24.6°C 76.3°F |
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