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October Weather in Galveston, United States

Last updated: June 24, 2025

In Galveston, United States during October, the average temperature hovers around 14°C (57°F). Expect a range from a chilly -2°C (29°F) to a sweltering 33°C (92°F). With 105 mm (4.1 in) of precipitation spread over 11 days, you might want to keep an umbrella handy. The average humidity sits at a notable 81%, adding to the overall climate experience.

October Temperature in Galveston

In October in Galveston, the average temperature is 14°C (57°F). Maximums can reach 33°C (92°F), while minimums can drop as low as -2°C (29°F). This diverse temperature range makes Galveston a unique destination for travelers seeking both warm and chilly experiences during their stay.

October Weather in Galveston: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Galveston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Galveston, October typically has an average temperature of 14°C (57°F), with highs reaching up to 33°C (92°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec293142516473767369574135
Data source: Temperature data for Galveston generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Galveston

In Galveston in October, the precipitation amount is 105 mm (4.1 in) over the course of 11 days.

October Precipitation Trends in Galveston

The chart displays monthly precipitation patterns in Galveston, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Galveston, October typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec76821049315210697101671057966
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Galveston

In Galveston in October, humidity is 81%. With an average temperature of 14°C (57°F), this humidity feels like a warm, dense blanket that clings to your skin, making outdoor exploration a bit heavier and more tiring.

October Average Humidity in Galveston

This chart illustrates the average monthly humidity levels in Galveston, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Galveston is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%87%81%82%81%79%78%81%89%86%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Galveston

In Galveston in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Galveston, you can refer to this Hourly UV Index in Galveston.

Maximum UV Index Levels in Galveston for October

The chart shows the monthly maximum UV Index (UVI) for Galveston in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Galveston typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098642
Data source: Galveston October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How October Weather in Galveston Compares to Other Months

Weather in Galveston varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Galveston, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Galveston, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)76 mm (3.0 inches)85%moderate
February Weather0°C (32°F)82 mm (3.2 inches)85%moderate
March Weather5°C (42°F)104 mm (4.1 inches)86%high
April Weather11°C (51°F)93 mm (3.7 inches)87%very high
May Weather18°C (64°F)152 mm (6.0 inches)81%very high
June Weather23°C (73°F)105 mm (4.2 inches)82%extreme
July Weather24°C (76°F)97 mm (3.8 inches)81%very high
August Weather23°C (74°F)101 mm (4.0 inches)79%very high
September Weather21°C (69°F)67 mm (2.6 inches)78%very high
October Weather14°C (57°F)105 mm (4.1 inches)81%high
November Weather5°C (41°F)79 mm (3.1 inches)89%moderate
December Weather2°C (35°F)66 mm (2.6 inches)86%low

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