September Weather in Usumatlan, Guatemala

Last updated: August 23, 2025

In Usumatlan, Guatemala, the average temperature in September hovers around 23°C (74°F), creating a pleasant climate for various activities. Expect a minimum of 17°C (63°F) and a maximum reaching 32°C (90°F). However, be prepared for some rain, as precipitation averages 192 mm (7.6 in) spread over 26 days, contributing to an average humidity level of 71%.

September Temperature in Usumatlan

In September in Usumatlan, the average temperature is 23°C (74°F). Maximum can reach 32°C (90°F) and minimum can be as low as 17°C (63°F). This mild climate makes Usumatlan an ideal destination for travelers seeking enjoyable outdoor experiences.

September Weather in Usumatlan: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Usumatlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Usumatlan, September typically has an average temperature of 23°C (74°F), with highs reaching up to 32°C (90°F) and lows dropping to around 17°C (63°F).

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

September Precipitation in Usumatlan

In Usumatlan in September, the total precipitation amount is 192 mm (7.6 in) spread over 26 days.

September Precipitation Trends in Usumatlan

The chart displays monthly precipitation patterns in Usumatlan, 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 Usumatlan, September typically receives around 192 mm (7.6 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 Usumatlan

In Usumatlan in September, humidity is 71%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping embrace that can make outdoor activities feel sticky, but if you're well-hydrated and take breaks in the shade, it offers a pleasant tropical ambiance perfect for exploration.

September Average Humidity in Usumatlan

This chart illustrates the average monthly humidity levels in Usumatlan, 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 Usumatlan is approximately 71%, 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 Usumatlan

In Usumatlan 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 Usumatlan.

Maximum UV Index Levels in Usumatlan for September

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

Data source: Usumatlan 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 Usumatlan Compares to Other Months

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

This table compares monthly weather conditions in Usumatlan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	19°C (67°F)	27 mm (1.1 inches)	80%	very high
February Weather	21°C (70°F)	25 mm (1.0 inches)	72%	extreme
March Weather	22°C (71°F)	21 mm (0.8 inches)	61%	extreme
April Weather	24°C (76°F)	43 mm (1.7 inches)	53%	extreme
May Weather	25°C (77°F)	154 mm (6.0 inches)	51%	extreme
June Weather	24°C (75°F)	287 mm (11.3 inches)	52%	extreme
July Weather	23°C (73°F)	135 mm (5.3 inches)	58%	extreme
August Weather	23°C (74°F)	184 mm (7.3 inches)	63%	extreme
September Weather	23°C (74°F)	192 mm (7.6 inches)	71%	extreme
October Weather	23°C (73°F)	186 mm (7.3 inches)	79%	extreme
November Weather	21°C (70°F)	93 mm (3.7 inches)	79%	very high
December Weather	20°C (68°F)	33 mm (1.3 inches)	74%	very high