San Antonio monthly weather averages
Average daytime temperature
The bar chart below shows the average monthly peak daytime temperatures at San Antonio
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 28.7 | 27.7 | 25.4 | 21.9 | 18.5 | 15.3 | 15 | 16.2 | 18.1 | 20.6 | 23.8 | 26.8 |
| °F | 83.6 | 81.8 | 77.8 | 71.5 | 65.3 | 59.5 | 58.9 | 61.2 | 64.6 | 69.1 | 74.9 | 80.2 |
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 | 93 | 107 | 106 | 91 | 94 | 91 | 92 | 91 | 97 | 108 | 86 | 82 |
| inches | 3.7 | 4.2 | 4.2 | 3.6 | 3.7 | 3.6 | 3.6 | 3.6 | 3.8 | 4.2 | 3.4 | 3.2 |
| Rainy days | 10 | 11 | 10 | 9 | 9 | 9 | 10 | 9 | 9 | 10 | 11 | 10 |
Average annual rainfall in San Antonio: 1046.5mm (412 inches)
Average daily sunshine
The bar chart below shows the average daily sunshine hours in San Antonio
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 9.9 | 8.4 | 7.9 | 6.6 | 5.8 | 4.8 | 5 | 5.8 | 6.7 | 8 | 8.6 | 9.7 |
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 | 18.5 | 18.3 | 16.4 | 12.9 | 9.9 | 7.6 | 7.1 | 7.8 | 9.3 | 11.6 | 14.4 | 16.8 |
| Max °C | 28.9 | 27.9 | 25.7 | 22.2 | 18.7 | 15.5 | 15.2 | 16.5 | 18.4 | 20.9 | 24.1 | 27 |
| Min °F | 65.3 | 64.9 | 61.4 | 55.1 | 49.8 | 45.6 | 44.7 | 46 | 48.7 | 52.8 | 57.8 | 62.2 |
| Max °F | 74.7 | 73.6 | 69.8 | 63.5 | 57.7 | 52.7 | 52 | 53.8 | 56.8 | 61.2 | 66.6 | 71.4 |
Sea temperature
The graph below shows the average sea temperature.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 22.9 | 23.1 | 22.2 | 19.4 | 16.2 | 13.2 | 11.3 | 11.2 | 12.3 | 15.1 | 18.1 | 20.8 |
| °F | 73.2 | 73.6 | 71.9 | 66.9 | 61.2 | 55.8 | 52.4 | 52.1 | 54.1 | 59.1 | 64.5 | 69.5 |
Wind speed
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 18 | 17 | 16 | 15 | 15 | 16 | 16 | 16 | 18 | 18 | 18 | 18 |
| mph | 11 | 10 | 10 | 9 | 9 | 10 | 10 | 10 | 11 | 11 | 11 | 11 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 68% | 70% | 73% | 75% | 78% | 82% | 81% | 77% | 75% | 74% | 71% | 68% |
Other monthly averages
San Antonio weather stats
| Hottest month: | January | 28.7°C 83.7°F |
|---|---|---|
| Driest month: | December | 82mm 3.2ins |
| Sunniest month: | January | 9.9hrs |
| Coldest month: | July | 15°C 59°F |
| Wettest month: | October | 108mm 4.3ins |
| Warmest sea: | February | 23.1°C 73.6°F |
© Google