Relative Humidity in Houston, TX
The average annual humidity is 75%.
Local Climate Profile
Houston is famous for its oppressive humidity. The Gulf of Mexico supplies constant moisture, leading to extremely sticky summers and high dew points.
In Houston, TX, the relative humidity fluctuates throughout the day. It is generally highest in the early morning, averaging 88% when the air is cool. As the sun heats the air throughout the day, the relative humidity naturally drops, reaching an average of 61% by the late afternoon.
Managing Indoor Comfort in Houston, TX
Because outdoor weather directly impacts your indoor environment, residents of Houston, 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!