Houston monthly weather averages

Contents

Average daytime temperature
Average rainfall
Average daily sunshine
Day / night temperatures
Sea temperature
Wind speed
Relative humidity
Quick weather stats
Location map

Average daytime temperature

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

Houston average temperature chart (Celsius)

Houston average temperature chart (Fahrenheit)

Average monthly temperatures in Houston (degrees centigrade and fahrenheit)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
°C	-4.9	-1	3.5	9	14	17.6	20.6	20.7	15.7	8.6	-0.2	-4.8
°F	23.2	30.2	38.3	48.1	57.2	63.7	69.2	69.2	60.3	47.4	31.7	23.3

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	62	39	30	21	31	45	45	46	46	63	61	63
inches	2.4	1.6	1.2	0.8	1.2	1.8	1.8	1.8	1.8	2.5	2.4	2.5
Rainy days	15	11	10	8	10	12	12	13	13	15	15	15

Average annual rainfall in Houston: 480.467mm (189.2 inches)

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	1.9	3.4	4.7	6.6	7.7	8.3	8.7	7.8	5.3	3.4	1.7	1.3

Day / night temperatures

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

Houston average minimum / maximum temperatures (Celsius)

Houston average minimum / maximum temperatures (Fahrenheit)

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	-13.3	-11.5	-8	-3.3	0.5	4.1	6.2	6.4	2.4	-0.8	-7	-12.4
Max °C	-4.7	-0.8	3.8	9.3	14.4	18	21	21	16.1	8.8	0	-4.7
Min °F	8.1	11.4	17.6	26.2	32.8	39.3	43.2	43.5	36.2	30.6	19.4	9.8
Max °F	15.8	21	28.2	37.4	45.3	51.8	56.5	56.7	48.6	39.2	25.7	16.7

Sea temperature

The graph below shows the average sea temperature.

Houston average sea temperature chart (Fahrenheit)

Average sea temperature around Houston in degrees centigrade and fahrenheit
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
°C	6.1	5.9	6.2	7	8.6	10.5	11.9	12.3	11.4	9.4	7.6	6.6
°F	42.9	42.7	43.1	44.6	47.5	50.9	53.5	54.2	52.5	48.8	45.7	43.8

Wind speed

The graph below shows the average wind speed.

Houston average winspeed by month (km/h)

Average wind speed in Houston (mph and kmh)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
km/h	9	9	9	9	9	8	8	7	7	8	9	9
mph	6	6	5	6	6	5	5	5	5	5	5	5

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
82%	78%	73%	65%	63%	66%	70%	74%	80%	82%	85%	84%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Houston weather stats

Houston weather statistics
Hottest month:	August	20.7°C 69.3°F
Driest month:	April	21mm 0.8ins
Sunniest month:	August	7.8hrs
Coldest month:	January	-4.9°C 23.2°F
Wettest month:	October	63mm 2.5ins
Warmest sea:	August	12.3°C 54.1°F

Map showing location of Houston (54.39976, -126.67008)