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Galveston (TX) Climate by Month

The temperature in Galveston can vary greatly throughout the year. The temperatures shift from very warm to mild. It also has a relatively rainy climate with high levels of precipitation. Now, let’s explore all the climate details to give you a full picture.

Average day and night temperature

Depending on the time of the year, temperatures range from very warm to moderate in Galveston. On average, daytime temperatures range from a very warm 33°C in August to a moderate 16°C in January. Nighttime temperatures can drop, with averages reaching 9°C in January.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Galveston has a relatively rainy climate with high precipitation levels, averaging 1146 mm of rainfall annually. The seasons in Galveston, bring significant changes in precipitation. The wettest month, September, receives high rainfall, with an average of 158 mm of precipitation. This rainfall is distributed across 13 rainy days. In contrast, the driest month, February, experiences much less rainfall, totaling 53 mm over 8 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

In Galveston, summer days are longer and more sunny, with daily sunshine hours peaking at 10.4 hours in July. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 4.9 hours.

Monthly hours of sunshine

Daily hours of sunshine

The best time of year to visit Galveston in the United States of America

During the months of March, April and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Galveston?
    August has an average maximum temperature of 33°C and is the warmest month of the year.
  • Which is the coldest month in Galveston?
    The coldest month is January with an average maximum temperature of 16°C.
  • Which is the wettest month in Galveston?
    September tops the wettest month list with 158 mm of rainfall.
  • Which is the driest month in Galveston?
    February is the driest month with 53 mm of precipitation.
  • Which is the sunniest month in Galveston?
    July is the sunniest month with an average of 311 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Galveston (TX)

    Fri   Nov 22
    21°C | 14°C
    NW 14 km/h
    almost clear and no rain

    almost clear and no rain

    Sat   Nov 23
    23°C | 16°C
    E 18 km/h
    clear and no rain

    clear and no rain

    Sun   Nov 24
    26°C | 20°C
    S 29 km/h
    partly cloudy and no rain

    partly cloudy and no rain