Houston (TX) monthly weather averages

  • Average daytime temperature

    The bar chart below shows the average monthly peak daytime temperatures at Houston

    Houston average temperature chart
    Average monthly temperatures in Houston (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 15.2 17 21 24.8 27.9 31 32.5 32.5 29.8 26.1 21.1 16.9
    °F 59.3 62.6 69.8 76.7 82.3 87.8 90.5 90.5 85.7 78.9 69.9 62.4

    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.

    Average monthly rainfall in Houston (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 84 73 66 78 118 132 93 100 123 93 87 80
    inches 3.3 2.9 2.6 3.1 4.6 5.2 3.7 3.9 4.8 3.7 3.4 3.1
    Rainy days 10 8 9 6 8 8 9 9 9 7 8 9
  • Average daily sunshine

    The bar chart below shows the average daily sunshine hours in Houston

    Average daily sunshine Houston
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 5 6 6.8 7.5 8.6 10.1 10.3 9.5 8.4 8 6.1 5.2
  • Day / night temperatures

    The graph below shows the daily range of temperatures for each month.

    Maximum and minimum daily temperatures in Houston (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C 6.4 7.8 11.8 16.2 19.5 22.6 23.7 23.7 21.4 16.3 11.7 7.7
    Max °C 15.4 17.3 21.2 25.1 28.2 31.2 32.7 32.7 30.1 26.3 21.3 17.1
    Min °F 43.5 46 53.2 61.1 67 72.7 74.7 74.7 70.4 61.3 53.1 45.9
    Max °F 51.6 54.5 61.7 69.1 74.8 80.4 82.8 82.8 78.3 70.3 61.7 54.3
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Houston in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 18 17.4 18.6 21.1 24.6 28 29.3 29.6 28.8 26.1 22.7 20
    °F 64.4 63.3 65.4 70 76.4 82.3 84.7 85.3 83.8 78.9 72.9 68
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Houston (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 16 17 18 17 16 14 13 12 13 13 15 15
    mph 10 10 11 11 10 9 8 7 8 8 9 9

    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.

    Average relative humidity in Houston
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    76% 74% 74% 74% 76% 76% 75% 75% 77% 75% 76% 77%

Other monthly averages

Houston weather stats

Houston weather statistics
Hottest month: July 32.5°C 90.5°F
Driest month: March 66mm 2.6ins
Sunniest month: July 10.3hrs
Coldest month: January 15.2°C 59.4°F
Wettest month: June 132mm 5.2ins
Warmest sea: August 29.6°C 85.3°F
Map showing location of Houston (29.76328, -95.36327)

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