September Weather in La Isla, Mexico

Last updated: August 27, 2025

In September, the average temperature in La Isla, Mexico is a pleasant 20°C (68°F). Temperature fluctuations can be noted, with minimums dipping to 11°C (53°F) and maximums reaching up to 30°C (86°F). Expect a moderate precipitation amount of 167 mm (6.6 in) spread across 21 days, complemented by a high average humidity of 81%. Perfect for those who enjoy a mild and slightly moist climate!

September Temperature in La Isla

In September in La Isla, the average temperature is 20°C (68°F). The maximum can reach 30°C (86°F), and the minimum can be as low as 11°C (53°F). This mild climate makes it an ideal time for outdoor activities and exploring the local attractions.

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 20°C (68°F), with highs reaching up to 30°C (86°F) and lows dropping to around 11°C (53°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 precipitation amount is 167 mm (6.6 in) over the course of 21 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 167 mm (6.6 inches) of precipitation spread over approximately 21 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 81%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace that can make outdoor activities feel steamy and exhausting, potentially leading travelers to seek shade or a refreshing drink more often.

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 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 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	16°C (61°F)	6 mm (0.2 inches)	74%	very high
February Weather	18°C (64°F)	6 mm (0.3 inches)	65%	extreme
March Weather	21°C (69°F)	5 mm (0.2 inches)	58%	extreme
April Weather	22°C (72°F)	2 mm (0.1 inches)	58%	extreme
May Weather	23°C (75°F)	41 mm (1.6 inches)	67%	extreme
June Weather	22°C (72°F)	142 mm (5.6 inches)	76%	extreme
July Weather	20°C (69°F)	199 mm (7.8 inches)	67%	extreme
August Weather	20°C (69°F)	182 mm (7.2 inches)	68%	extreme
September Weather	20°C (68°F)	167 mm (6.6 inches)	81%	extreme
October Weather	20°C (67°F)	67 mm (2.6 inches)	83%	extreme
November Weather	18°C (64°F)	18 mm (0.7 inches)	84%	very high
December Weather	16°C (60°F)	3 mm (0.1 inches)	81%	very high