September Weather in Trujillo Alto, Puerto Rico

Last updated: August 31, 2025

In September, the average temperature in Trujillo Alto, Puerto Rico hovers around 27°C (81°F), with a minimum of 23°C (74°F) and a maximum of 32°C (90°F). Expect 200 mm (7.9 in) of precipitation over approximately 27 days, contributing to an average humidity of 79%. Perfect for those who enjoy a touch of warmth and occasional rain!

September Temperature in Trujillo Alto

In September in Trujillo Alto, the average temperature is 27°C (81°F). Maximums can reach 32°C (90°F) and minimums can be as low as 23°C (74°F). This pleasant climate makes Trujillo Alto a great destination for travelers looking to enjoy warm and comfortable weather.

September Weather in Trujillo Alto: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Trujillo Alto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trujillo Alto, September typically has an average temperature of 27°C (81°F), with highs reaching up to 32°C (90°F) and lows dropping to around 23°C (74°F).

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

September Precipitation in Trujillo Alto

In Trujillo Alto in September, the precipitation amount is 200 mm (7.9 in) occurring over the course of 27 days.

September Precipitation Trends in Trujillo Alto

The chart displays monthly precipitation patterns in Trujillo Alto, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Trujillo Alto, September typically receives around 200 mm (7.9 inches) of precipitation spread over approximately 27 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Trujillo Alto

In Trujillo Alto in September, humidity is 79%. With an average temperature of 27°C (81°F), this humidity feels like a warm and sticky embrace, making travel both challenging and invigorating as the air clings to your skin, urging you to seek shade or a refreshing drink.

September Average Humidity in Trujillo Alto

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

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

September UV Index in Trujillo Alto

In Trujillo Alto in September, 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 Trujillo Alto.

Maximum UV Index Levels in Trujillo Alto for September

The chart shows the monthly maximum UV Index (UVI) for Trujillo Alto in September, 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 September, the maximum UV index in Trujillo Alto typically reaches 13, which falls under the extreme exposure category.

Data source: Trujillo Alto September 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 September Weather in Trujillo Alto Compares to Other Months

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

This table compares monthly weather conditions in Trujillo Alto, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (76°F)	48 mm (1.9 inches)	76%	very high
February Weather	24°C (75°F)	53 mm (2.1 inches)	75%	extreme
March Weather	24°C (76°F)	80 mm (3.2 inches)	74%	extreme
April Weather	25°C (77°F)	77 mm (3.0 inches)	75%	extreme
May Weather	26°C (79°F)	98 mm (3.9 inches)	75%	extreme
June Weather	27°C (80°F)	99 mm (3.9 inches)	77%	extreme
July Weather	27°C (81°F)	124 mm (4.9 inches)	80%	extreme
August Weather	27°C (81°F)	130 mm (5.1 inches)	80%	extreme
September Weather	27°C (81°F)	200 mm (7.9 inches)	79%	extreme
October Weather	27°C (80°F)	183 mm (7.2 inches)	78%	extreme
November Weather	26°C (79°F)	120 mm (4.7 inches)	78%	very high
December Weather	25°C (77°F)	66 mm (2.6 inches)	76%	very high