September Weather in Santa Apolonia, Guatemala

Last updated: August 23, 2025

In September, the average temperature in Santa Apolonia, Guatemala hovers around 18°C (64°F), with a minimum of 12°C (53°F) and a pleasant maximum reaching 25°C (77°F). This month sees an average of 294 mm (11.6 in) of precipitation spread over 26 days, contributing to a notably high average humidity of 82%. Be prepared for a mix of weather as you enjoy your time in this picturesque locale!

September Temperature in Santa Apolonia

In September in Santa Apolonia, the average temperature is 18°C (64°F), with maximums reaching 25°C (77°F) and minimums dropping to as low as 12°C (53°F). This makes it an ideal time for travelers looking to enjoy mild weather and comfortable outdoor activities.

September Weather in Santa Apolonia: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Apolonia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Apolonia, September typically has an average temperature of 18°C (64°F), with highs reaching up to 25°C (77°F) and lows dropping to around 12°C (53°F).

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

September Precipitation in Santa Apolonia

In Santa Apolonia in September, the total precipitation amount is 294 mm (11.6 in) over the course of 26 days.

September Precipitation Trends in Santa Apolonia

The chart displays monthly precipitation patterns in Santa Apolonia, 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 Santa Apolonia, September typically receives around 294 mm (11.6 inches) of precipitation spread over approximately 26 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 Santa Apolonia

In Santa Apolonia in September humidity is 82%. With an average temperature of 18°C (64°F), this humidity feels like a warm, muggy embrace that can make exploring the area feel stifling, leaving travelers drenched in sweat and longing for respite in the shade.

September Average Humidity in Santa Apolonia

This chart illustrates the average monthly humidity levels in Santa Apolonia, 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 Santa Apolonia is approximately 82%, 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 Santa Apolonia

In Santa Apolonia in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Santa Apolonia, you can check here.

Maximum UV Index Levels in Santa Apolonia for September

The chart shows the monthly maximum UV Index (UVI) for Santa Apolonia 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 Santa Apolonia typically reaches 14, which falls under the extreme exposure category.

Data source: Santa Apolonia 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 Santa Apolonia Compares to Other Months

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

This table compares monthly weather conditions in Santa Apolonia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (60°F)	13 mm (0.5 inches)	76%	extreme
February Weather	17°C (62°F)	14 mm (0.6 inches)	68%	extreme
March Weather	17°C (64°F)	17 mm (0.7 inches)	59%	extreme
April Weather	18°C (65°F)	84 mm (3.3 inches)	57%	extreme
May Weather	18°C (65°F)	267 mm (10.5 inches)	65%	extreme
June Weather	18°C (64°F)	352 mm (13.8 inches)	66%	extreme
July Weather	18°C (64°F)	132 mm (5.2 inches)	75%	extreme
August Weather	18°C (64°F)	215 mm (8.5 inches)	82%	extreme
September Weather	18°C (64°F)	294 mm (11.6 inches)	82%	extreme
October Weather	17°C (64°F)	252 mm (9.9 inches)	83%	extreme
November Weather	17°C (62°F)	52 mm (2.0 inches)	80%	extreme
December Weather	16°C (61°F)	14 mm (0.6 inches)	76%	very high