May Weather in Port Lavaca, United States

Last updated: June 24, 2025

In May, the average temperature in Port Lavaca, United States hovers around 26°C (79°F). Expect minimums of 12°C (55°F) and maximums reaching 33°C (91°F). This month sees approximately 114 mm (4.5 in) of precipitation spread over 12 days, resulting in an average humidity level of 79%. Stay prepared for a mix of warm days and occasional rain!

May Temperature in Port Lavaca

In May in Port Lavaca, the average temperature is 26°C (79°F). Maximums can reach 33°C (91°F), while minimums can dip to as low as 12°C (55°F). This makes Port Lavaca an ideal destination for travelers seeking a pleasant climate and a variety of outdoor activities.

May Weather in Port Lavaca: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Port Lavaca, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Lavaca, May typically has an average temperature of 26°C (79°F), with highs reaching up to 33°C (91°F) and lows dropping to around 12°C (55°F).

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

May Precipitation in Port Lavaca

In Port Lavaca in May, the precipitation amount is 114 mm (4.5 in) spread over 12 days.

May Precipitation Trends in Port Lavaca

The chart displays monthly precipitation patterns in Port Lavaca, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Port Lavaca, May typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Port Lavaca

In Port Lavaca in May humidity is 79%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting. Travelers should be prepared for a heavy air that clings to the skin, making hydration essential while navigating the sights and sounds of the city.

May Average Humidity in Port Lavaca

This chart illustrates the average monthly humidity levels in Port Lavaca, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Port Lavaca is approximately 79%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Port Lavaca

In Port Lavaca in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Port Lavaca.

Maximum UV Index Levels in Port Lavaca for May

The chart shows the monthly maximum UV Index (UVI) for Port Lavaca in May, 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 May, the maximum UV index in Port Lavaca typically reaches 11, which falls under the extreme exposure category.

Data source: Port Lavaca May 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 May Weather in Port Lavaca Compares to Other Months

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

This table compares monthly weather conditions in Port Lavaca, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	14°C (57°F)	52 mm (2.0 inches)	78%	moderate
February Weather	15°C (60°F)	52 mm (2.1 inches)	81%	very high
March Weather	20°C (67°F)	57 mm (2.3 inches)	76%	very high
April Weather	22°C (72°F)	59 mm (2.3 inches)	79%	extreme
May Weather	26°C (79°F)	114 mm (4.5 inches)	79%	extreme
June Weather	28°C (83°F)	141 mm (5.6 inches)	74%	extreme
July Weather	29°C (84°F)	104 mm (4.1 inches)	71%	extreme
August Weather	29°C (85°F)	112 mm (4.4 inches)	68%	extreme
September Weather	27°C (81°F)	148 mm (5.8 inches)	73%	extreme
October Weather	23°C (74°F)	81 mm (3.2 inches)	75%	very high
November Weather	18°C (65°F)	61 mm (2.4 inches)	78%	high
December Weather	16°C (60°F)	64 mm (2.5 inches)	84%	moderate