September Weather in La Montesa, Mexico

Last updated: August 26, 2025

In September, the average temperature in La Montesa, Mexico is a pleasant 18°C (65°F). Though you might experience cooler moments with a minimum of 8°C (46°F), the warmth can rise to a maximum of 28°C (83°F). Expect about 135 mm (5.3 in) of precipitation spread over 15 days, accompanied by an average humidity of 81%—perfect for a refreshing getaway!

September Temperature in La Montesa

In September in La Montesa, the average temperature is 18°C (65°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as 8°C (46°F). This pleasant climate makes La Montesa an ideal destination for travelers looking to enjoy mild weather and outdoor activities.

September Weather in La Montesa: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in La Montesa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Montesa, September typically has an average temperature of 18°C (65°F), with highs reaching up to 28°C (83°F) and lows dropping to around 8°C (46°F).

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

September Precipitation in La Montesa

In La Montesa in September, the precipitation amount is 135 mm (5.3 in), occurring over a span of 15 days.

September Precipitation Trends in La Montesa

The chart displays monthly precipitation patterns in La Montesa, 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 La Montesa, September typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 15 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 La Montesa

In La Montesa in September, humidity is 81%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and the air thick and sultry—a challenging environment for traveling.

September Average Humidity in La Montesa

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

In La Montesa 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 La Montesa, you can check here.

Maximum UV Index Levels in La Montesa for September

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

Data source: La Montesa 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 La Montesa Compares to Other Months

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

This table compares monthly weather conditions in La Montesa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (55°F)	11 mm (0.5 inches)	74%	very high
February Weather	15°C (59°F)	9 mm (0.3 inches)	65%	extreme
March Weather	18°C (64°F)	9 mm (0.3 inches)	58%	extreme
April Weather	20°C (68°F)	4 mm (0.2 inches)	58%	extreme
May Weather	21°C (71°F)	34 mm (1.4 inches)	67%	extreme
June Weather	20°C (69°F)	122 mm (4.8 inches)	76%	extreme
July Weather	19°C (67°F)	108 mm (4.3 inches)	67%	extreme
August Weather	20°C (67°F)	87 mm (3.4 inches)	68%	extreme
September Weather	18°C (65°F)	135 mm (5.3 inches)	81%	extreme
October Weather	17°C (63°F)	50 mm (2.0 inches)	83%	extreme
November Weather	15°C (59°F)	15 mm (0.6 inches)	84%	very high
December Weather	13°C (55°F)	9 mm (0.3 inches)	81%	very high