March Weather in Galveston, United States

Last updated: June 24, 2025

In March, the average temperature in Galveston, United States hovers around 5°C (42°F). During this time, temperatures can dip to a chilling -16°C (3°F) at their lowest or soar to a balmy 24°C (76°F) at their peak. Expect 104 mm (4.1 in) of precipitation spread across roughly 12 days, contributing to an average humidity level of 86%. Stay prepared for a month of contrasting weather!

March Temperature in Galveston

In March in Galveston, the average temperature is 5°C (42°F). The maximum can reach 24°C (76°F), and the minimum can be as low as -16°C (3°F). This means travelers should be prepared for a wide range of temperatures, from chilly to warm, making it essential to pack layers for their visit.

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

The chart illustrates March 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, March typically has an average temperature of 5°C (42°F), with highs reaching up to 24°C (76°F) and lows dropping to around -16°C (3°F).

Data source: Temperature data for Galveston generated using information from the Copernicus Climate Change Service.

March Precipitation in Galveston

In Galveston in March, the total precipitation amount is 104 mm (4.1 in) spread over 12 days.

March Precipitation Trends in Galveston

The chart displays monthly precipitation patterns in Galveston, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Galveston, March typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Galveston

In Galveston in March, humidity is 86%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that penetrates your layers, making outdoor activities quite uncomfortable and prompting you to seek warmth indoors more often.

March Average Humidity in Galveston

This chart illustrates the average monthly humidity levels in Galveston, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Galveston is approximately 86%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Galveston

In Galveston in March, 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 March

The chart shows the monthly maximum UV Index (UVI) for Galveston in March, 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 March, the maximum UV index in Galveston typically reaches 6, which falls under the high exposure category.

Data source: Galveston March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	76 mm (3.0 inches)	85%	moderate
February Weather	0°C (32°F)	82 mm (3.2 inches)	85%	moderate
March Weather	5°C (42°F)	104 mm (4.1 inches)	86%	high
April Weather	11°C (51°F)	93 mm (3.7 inches)	87%	very high
May Weather	18°C (64°F)	152 mm (6.0 inches)	81%	very high
June Weather	23°C (73°F)	105 mm (4.2 inches)	82%	extreme
July Weather	24°C (76°F)	97 mm (3.8 inches)	81%	very high
August Weather	23°C (74°F)	101 mm (4.0 inches)	79%	very high
September Weather	21°C (69°F)	67 mm (2.6 inches)	78%	very high
October Weather	14°C (57°F)	105 mm (4.1 inches)	81%	high
November Weather	5°C (41°F)	79 mm (3.1 inches)	89%	moderate
December Weather	2°C (35°F)	66 mm (2.6 inches)	86%	low