Relative Humidity in San Antonio, TX
The average annual humidity is 66%.
Local Climate Profile
San Antonio acts as a transitional zone between the humid eastern part of Texas and the arid western deserts, leading to highly variable humidity.
In San Antonio, TX, the relative humidity fluctuates throughout the day. It is generally highest in the early morning, averaging 82% when the air is cool. As the sun heats the air throughout the day, the relative humidity naturally drops, reaching an average of 50% by the late afternoon.
Managing Indoor Comfort in San Antonio, TX
Because outdoor weather directly impacts your indoor environment, residents of San Antonio, TX must actively manage their home's humidity to stay within the ideal 30% to 60% range.
Since the local average is quite high, you should rely on your air conditioning and potentially a standalone dehumidifier to prevent mold growth and musty odors in your home.
Use the Calculator
If you have a hygrometer in your home, plug your current indoor temperature and humidity into the calculator above. It will instantly tell you the Dew Point and give you a comfort score!