September Weather in La Isla, Mexico

Last updated: August 27, 2025

In September, the average temperature in La Isla, Mexico hovers around 28°C (83°F), with a minimum of 23°C (73°F) and a scorching maximum of 38°C (100°F). Expect 393 mm (15.5 in) of precipitation spread over 27 days, contributing to a high average humidity of 86%. Stay prepared for a warm and wet month!

September Temperature in La Isla

In September in La Isla, the average temperature is 28°C (83°F). Maximum temperatures can reach 38°C (100°F), while the minimum can drop to as low as 23°C (73°F). This warm climate makes La Isla an excellent destination for travelers seeking sun and outdoor activities.

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

The chart illustrates September temperature patterns in La Isla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Isla, September typically has an average temperature of 28°C (83°F), with highs reaching up to 38°C (100°F) and lows dropping to around 23°C (73°F).

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

September Precipitation in La Isla

In La Isla in September, the total precipitation amount is 393 mm (15.5 in) spread over 27 days.

September Precipitation Trends in La Isla

The chart displays monthly precipitation patterns in La Isla, 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 Isla, September typically receives around 393 mm (15.5 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 La Isla

In La Isla in September humidity is 86%. With an average temperature of 28°C (83°F), this humidity feels like a heavy blanket enveloping you, making every step feel sluggish and every breath a reminder of the tropical heat, which can be quite challenging for traveling.

September Average Humidity in La Isla

This chart illustrates the average monthly humidity levels in La Isla, 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 Isla is approximately 86%, 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 Isla

In La Isla 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 La Isla.

Maximum UV Index Levels in La Isla for September

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

Data source: La Isla 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 Isla Compares to Other Months

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

This table compares monthly weather conditions in La Isla, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (73°F)	44 mm (1.7 inches)	88%	very high
February Weather	24°C (75°F)	40 mm (1.6 inches)	86%	extreme
March Weather	26°C (79°F)	35 mm (1.4 inches)	84%	extreme
April Weather	28°C (83°F)	29 mm (1.1 inches)	81%	extreme
May Weather	30°C (86°F)	96 mm (3.8 inches)	82%	extreme
June Weather	29°C (84°F)	333 mm (13.1 inches)	81%	extreme
July Weather	28°C (83°F)	281 mm (11.1 inches)	81%	extreme
August Weather	28°C (83°F)	313 mm (12.3 inches)	82%	extreme
September Weather	28°C (83°F)	393 mm (15.5 inches)	86%	extreme
October Weather	27°C (81°F)	255 mm (10.1 inches)	90%	extreme
November Weather	25°C (76°F)	99 mm (3.9 inches)	91%	very high
December Weather	23°C (74°F)	25 mm (1.0 inches)	91%	very high