September Weather in San Luis Gonzaga, Mexico

Last updated: August 27, 2025

In San Luis Gonzaga, Mexico, the average temperature for September is a pleasant 18°C (64°F). You can expect temperatures to vary, with a minimum of 9°C (48°F) and a maximum of 28°C (83°F). Rainfall may occur on about 14 days, accumulating to 112 mm (4.4 in), while the humidity hovers around a comfortable 81%. Prepare accordingly for a mix of pleasant sunny days and refreshing showers!

September Temperature in San Luis Gonzaga

In September in San Luis Gonzaga, the average temperature is 18°C (64°F). The maximum can reach 28°C (83°F) and the minimum can be as low as 9°C (48°F). This makes it a perfect time to explore the outdoors while enjoying comfortable weather.

September Weather in San Luis Gonzaga: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Luis Gonzaga, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Luis Gonzaga, September typically has an average temperature of 18°C (64°F), with highs reaching up to 28°C (83°F) and lows dropping to around 9°C (48°F).

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

September Precipitation in San Luis Gonzaga

In San Luis Gonzaga in September, the precipitation amount is 112 mm (4.4 in) spread over 14 days.

September Precipitation Trends in San Luis Gonzaga

The chart displays monthly precipitation patterns in San Luis Gonzaga, 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 San Luis Gonzaga, September typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 14 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 San Luis Gonzaga

In San Luis Gonzaga in September, humidity is 81%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making travel both refreshing and slightly stifling at the same time.

September Average Humidity in San Luis Gonzaga

This chart illustrates the average monthly humidity levels in San Luis Gonzaga, 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 San Luis Gonzaga 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 San Luis Gonzaga

In San Luis Gonzaga 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 San Luis Gonzaga, you can check here.

Maximum UV Index Levels in San Luis Gonzaga for September

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

Data source: San Luis Gonzaga 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 San Luis Gonzaga Compares to Other Months

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

This table compares monthly weather conditions in San Luis Gonzaga, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	7 mm (0.3 inches)	74%	very high
February Weather	15°C (59°F)	10 mm (0.4 inches)	65%	extreme
March Weather	17°C (63°F)	11 mm (0.4 inches)	58%	extreme
April Weather	19°C (67°F)	9 mm (0.3 inches)	58%	extreme
May Weather	21°C (70°F)	38 mm (1.5 inches)	67%	extreme
June Weather	20°C (68°F)	113 mm (4.4 inches)	76%	extreme
July Weather	19°C (66°F)	86 mm (3.4 inches)	67%	extreme
August Weather	19°C (67°F)	68 mm (2.7 inches)	68%	extreme
September Weather	18°C (64°F)	112 mm (4.4 inches)	81%	extreme
October Weather	17°C (62°F)	48 mm (1.9 inches)	83%	extreme
November Weather	14°C (58°F)	17 mm (0.7 inches)	84%	very high
December Weather	12°C (55°F)	6 mm (0.2 inches)	81%	very high