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August Weather in Port Isabel, United States

Last updated: June 24, 2025

In Port Isabel, United States, the average temperature in August hovers around 29°C (84°F), with a comfortable minimum of 25°C (77°F) and a maximum of 31°C (88°F). Be prepared for some rain, as precipitation averages 32 mm (1.2 in) over 8 days. The humidity is quite high, averaging around 77%, perfect for those who enjoy a tropical vibe!

August Temperature in Port Isabel

In August in Port Isabel, the average temperature is 29°C (84°F). Maximum temperatures can reach 31°C (88°F), while minimum temperatures can drop to as low as 25°C (77°F). This warm climate makes Port Isabel an ideal destination for travelers seeking sunshine and pleasant outdoor activities.

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

The chart illustrates August 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, August typically has an average temperature of 29°C (84°F), with highs reaching up to 31°C (88°F) and lows dropping to around 25°C (77°F).
JanFebMarAprMayJunJulAugSepOctNovDec646469747982828382797267
Data source: Temperature data for Port Isabel 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.

August Precipitation in Port Isabel

In Port Isabel in August, the precipitation amount is 32 mm (1.2 in) spread over 8 days.

August Precipitation Trends in Port Isabel

The chart displays monthly precipitation patterns in Port Isabel, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Port Isabel, August typically receives around 32 mm (1.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec47364226688712532136947143
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Port Isabel

In Port Isabel in August, humidity is 77%. With an average temperature of 29°C (84°F), this humidity feels like a warm blanket enveloping you, making traveling feel heavy and sticky, and often requiring frequent breaks to find relief in shaded areas or air-conditioned spaces.

August Average Humidity in Port Isabel

This chart illustrates the average monthly humidity levels in Port Isabel, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Port Isabel is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%82%81%85%83%79%79%78%77%76%79%79%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Port Isabel

In Port Isabel in August, 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 August

The chart shows the monthly maximum UV Index (UVI) for Port Isabel in August, 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 August, the maximum UV index in Port Isabel typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec69101112121212111076
Data source: Port Isabel August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)47 mm (1.9 inches)78%high
February Weather18°C (65°F)36 mm (1.4 inches)81%very high
March Weather20°C (69°F)42 mm (1.6 inches)81%very high
April Weather23°C (74°F)26 mm (1.0 inches)85%extreme
May Weather26°C (79°F)68 mm (2.7 inches)83%extreme
June Weather28°C (82°F)87 mm (3.4 inches)79%extreme
July Weather28°C (83°F)125 mm (4.9 inches)79%extreme
August Weather29°C (84°F)32 mm (1.2 inches)77%extreme
September Weather28°C (82°F)136 mm (5.3 inches)77%extreme
October Weather26°C (79°F)94 mm (3.7 inches)76%very high
November Weather22°C (72°F)71 mm (2.8 inches)79%high
December Weather19°C (67°F)43 mm (1.7 inches)79%high

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