July Weather in Port Isabel, United States

Last updated: June 24, 2025

In July, the average temperature in Port Isabel, United States hovers around 28°C (83°F), with a comfortable minimum of 24°C (76°F) and a maximum of 30°C (86°F). Expect 125 mm (4.9 in) of rainfall spread over 8 days. Additionally, the average humidity is a notable 79%, adding to the tropical feel of the season.

July Temperature in Port Isabel

In July in Port Isabel, the average temperature is 28°C (83°F), with maximums reaching 30°C (86°F) and minimums dipping to 24°C (76°F). This warm and pleasant climate makes it an ideal destination for travelers seeking sunny outdoor adventures.

July Weather in Port Isabel: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Port Isabel, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Isabel, July typically has an average temperature of 28°C (83°F), with highs reaching up to 30°C (86°F) and lows dropping to around 24°C (76°F).

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

July Precipitation in Port Isabel

In Port Isabel in July, the precipitation amount is 125 mm (4.9 in) over the course of 8 days.

July Precipitation Trends in Port Isabel

The chart displays monthly precipitation patterns in Port Isabel, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Port Isabel, July typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Port Isabel

In Port Isabel in July humidity is 79%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities a challenge but also adding a certain tropical charm to your travel experience.

July Average Humidity in Port Isabel

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

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

July UV Index in Port Isabel

In Port Isabel in July, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Port Isabel.

Maximum UV Index Levels in Port Isabel for July

The chart shows the monthly maximum UV Index (UVI) for Port Isabel in July, 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 July, the maximum UV index in Port Isabel typically reaches 12, which falls under the extreme exposure category.

Data source: Port Isabel July 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 July Weather in Port Isabel Compares to Other Months

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

This table compares monthly weather conditions in Port Isabel, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (64°F)	47 mm (1.9 inches)	78%	high
February Weather	18°C (65°F)	36 mm (1.4 inches)	81%	very high
March Weather	20°C (69°F)	42 mm (1.6 inches)	81%	very high
April Weather	23°C (74°F)	26 mm (1.0 inches)	85%	extreme
May Weather	26°C (79°F)	68 mm (2.7 inches)	83%	extreme
June Weather	28°C (82°F)	87 mm (3.4 inches)	79%	extreme
July Weather	28°C (83°F)	125 mm (4.9 inches)	79%	extreme
August Weather	29°C (84°F)	32 mm (1.2 inches)	77%	extreme
September Weather	28°C (82°F)	136 mm (5.3 inches)	77%	extreme
October Weather	26°C (79°F)	94 mm (3.7 inches)	76%	very high
November Weather	22°C (72°F)	71 mm (2.8 inches)	79%	high
December Weather	19°C (67°F)	43 mm (1.7 inches)	79%	high