San Antonio
Texas, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and Climate
San Antonio, TX

Buildings in San Antonio, Texas, with a calm view of the bridges across the waterfront
Buildings in San Antonio, Texas, with a calm view of the bridges across the waterfront
March brings warm spring weather to San Antonio as the average temperatures keep in the 51°F (10.6°C) to 74°F (23.3°C) range. A few days rise to 80°F (26.7°C), while the nights drop to 40°F (4.4°C) at the most.
Spring breezes make the conditions more pleasant as tourists make a bee run for historical sites and various other attractions. Even though March is wet with 2.3" (58.4mm) of rain, the days are warm, and the sunlight lasts for 12 hours a day. An umbrella serves as a useful accessory to shield from unpredictable spurts of rain, and layered clothing protects from a cold spell of weather.
  • The average high temperature in March: 73°F

Warmest months (with the highest average high temperature) are July and August (95°F).
The month with the lowest average high temperature is January (61°F).

  • The average low temperature in March: 50°F

Months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (37°F).

  • The average rainfall in March: 1.5"

The wettest month (with the highest rainfall) is May (3.7").
Driest months (with the lowest rainfall) are January, March, July and December (1.5").

  • The average rainfall days in March: 6 days

The month with the highest number of rainy days is May (8 days).
Months with the lowest number of rainy days are July and August (5 days).

  • The average daylight in March: 12h

Months with the longest days are May, June and July (Average daylight: 14h).
The month with shortest days is December (Average daylight: 10h).

  • The average sunshine in March: 7h

The month with most sunshine is July (Average sunshine: 10h).
Months with least sunshine are January and December (Average sunshine: 5).

  • The average UV index in March: 8

Months with the highest UV index are May, June, July and August (UV index 11).
Months with the lowest UV index are January and December (UV index 4).