Galveston (TX) monthly weather averages

Contents

Average daytime temperature

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

Galveston average temperature chart (Celsius) Galveston average temperature chart (Fahrenheit)
Average monthly temperatures in Galveston (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 14.9 16.4 20 23.7 27.2 30 31.3 31.4 29.5 25.7 21.1 16.9
°F 58.8 61.5 68 74.7 80.9 86 88.3 88.5 85.1 78.2 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.

Galveston monthly rainfall chart (mm) Galveston monthly rainfall chart (inches)
Average monthly rainfall in Galveston (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 86 80 58 73 101 113 99 110 137 82 87 92
inches 3.4 3.1 2.3 2.9 4 4.4 3.9 4.3 5.4 3.2 3.4 3.6
Rainy days 10 7 7 5 7 7 8 9 10 6 7 8

Average annual rainfall in Galveston: 1052.8165mm (414.5 inches)

Average daily sunshine

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

Galveston average daily sunshine chart
Average daily sunshine Galveston
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5 6.2 7 7.8 9 10.4 10.5 9.6 8.4 8.2 6.3 5.3

Day / night temperatures

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

Galveston average minimum / maximum temperatures (Celsius) Galveston average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Galveston (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 7.9 9.5 13.3 17.7 21.5 24.5 25.6 25.6 23.5 19 14.2 9.8
Max °C 15.1 16.6 20.2 23.9 27.3 30.1 31.4 31.6 29.7 25.9 21.2 17.1
Min °F 46.3 49 55.9 63.9 70.7 76.1 78 78 74.2 66.1 57.5 49.7
Max °F 52.7 55.4 62.1 69.4 75.9 81.1 83.3 83.4 79.8 72.3 63.9 56.2

Sea temperature

The graph below shows the average sea temperature.

Galveston average sea temperature chart (Celsius) Galveston average sea temperature chart (Fahrenheit)
Average sea temperature around Galveston in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 16.9 16.4 17.9 20.8 24.6 28.2 29.6 29.9 28.8 25.7 22.1 19.1
°F 62.5 61.5 64.2 69.5 76.4 82.8 85.2 85.8 83.8 78.3 71.8 66.4

Wind speed

The graph below shows the average wind speed.

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

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.

Galveston relative humidity averages
Average relative humidity in Galveston
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
78% 76% 75% 76% 77% 78% 78% 78% 78% 76% 77% 78%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Galveston weather stats

Galveston weather statistics
Hottest month: August 31.4°C 88.5°F
Driest month: March 58mm 2.3ins
Sunniest month: July 10.5hrs
Coldest month: January 14.9°C 58.8°F
Wettest month: September 137mm 5.4ins
Warmest sea: August 29.9°C 85.8°F
Map showing location of Galveston (29.30135, -94.7977) Galveston map pin © Google

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