July Weather in Guayanilla, Puerto Rico

Last updated: August 31, 2025

In July, the average temperature in Guayanilla, Puerto Rico hovers around 27°C (80°F), providing a warm and inviting climate. Expect temperatures to range from a comfortable 23°C (74°F) to a balmy 31°C (88°F). However, be prepared for some occasional showers, as 90 mm (3.5 in) of precipitation can fall over 17 days this month. Don't forget, the average humidity is a high 81%, contributing to that tropical feel!

July Temperature in Guayanilla

In July, in Guayanilla, the average temperature is a pleasant 27°C (80°F). The maximum can reach as high as 31°C (88°F), while the minimum can drop to a comfortable 23°C (74°F). This makes Guayanilla an ideal destination for travelers seeking warm and enjoyable weather during this time.

July Weather in Guayanilla: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Guayanilla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guayanilla, July typically has an average temperature of 27°C (80°F), with highs reaching up to 31°C (88°F) and lows dropping to around 23°C (74°F).

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

July Precipitation in Guayanilla

In Guayanilla in July, the precipitation amount is 90 mm (3.5 in) spread over 17 days.

July Precipitation Trends in Guayanilla

The chart displays monthly precipitation patterns in Guayanilla, 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 Guayanilla, July typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 17 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in Guayanilla

In Guayanilla in July, humidity is 81%. With an average temperature of 27°C (80°F), this humidity feels like a warm blanket wrapping around you, making travel feel sticky and heavy, but the vibrant atmosphere can still be invigorating, inviting moments of exploration in slower, more deliberate steps.

July Average Humidity in Guayanilla

This chart illustrates the average monthly humidity levels in Guayanilla, 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 Guayanilla is approximately 81%, 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 Guayanilla

In Guayanilla in July, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Guayanilla.

Maximum UV Index Levels in Guayanilla for July

The chart shows the monthly maximum UV Index (UVI) for Guayanilla 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 Guayanilla typically reaches 13, which falls under the extreme exposure category.

Data source: Guayanilla 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 Guayanilla Compares to Other Months

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

This table compares monthly weather conditions in Guayanilla, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (76°F)	19 mm (0.8 inches)	76%	very high
February Weather	24°C (76°F)	26 mm (1.0 inches)	75%	extreme
March Weather	24°C (76°F)	53 mm (2.1 inches)	75%	extreme
April Weather	25°C (76°F)	55 mm (2.1 inches)	76%	extreme
May Weather	25°C (78°F)	67 mm (2.6 inches)	76%	extreme
June Weather	26°C (80°F)	61 mm (2.4 inches)	78%	extreme
July Weather	27°C (80°F)	90 mm (3.5 inches)	81%	extreme
August Weather	27°C (81°F)	94 mm (3.7 inches)	80%	extreme
September Weather	27°C (80°F)	167 mm (6.6 inches)	79%	extreme
October Weather	26°C (79°F)	107 mm (4.2 inches)	78%	extreme
November Weather	26°C (78°F)	87 mm (3.4 inches)	78%	very high
December Weather	25°C (77°F)	25 mm (1.0 inches)	77%	very high