September Weather in San Jose del Valle, Mexico

Last updated: August 27, 2025

In San Jose del Valle, Mexico, the average temperature in September hovers around 26°C (80°F), creating a warm and inviting atmosphere. Temperatures can range from a comfortable 23°C (73°F) to a sweltering 31°C (88°F). However, be prepared for substantial rainfall, with an average precipitation of 358 mm (14.1 in) spread over 28 days. With an average humidity of 78%, San Jose del Valle is a destination where the warmth is felt both in the air and on your skin.

September Temperature in San Jose del Valle

In September in San Jose del Valle, the average temperature is 26°C (80°F). Maximums can reach 31°C (88°F) and minimums can be as low as 23°C (73°F). This warm and pleasant weather makes San Jose del Valle a perfect destination for travelers looking to enjoy outdoor activities and sunshine.

September Weather in San Jose del Valle: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Jose del Valle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Jose del Valle, September typically has an average temperature of 26°C (80°F), with highs reaching up to 31°C (88°F) and lows dropping to around 23°C (73°F).

Data source: Temperature data for San Jose del Valle generated using information from the Copernicus Climate Change Service.

September Precipitation in San Jose del Valle

In San Jose del Valle in September, the precipitation amount is 358 mm (14.1 in) over a span of 28 days.

September Precipitation Trends in San Jose del Valle

The chart displays monthly precipitation patterns in San Jose del Valle, 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 Jose del Valle, September typically receives around 358 mm (14.1 inches) of precipitation spread over approximately 28 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in San Jose del Valle

In San Jose del Valle in September, humidity is 78%. With an average temperature of 26°C (80°F), this humidity feels like a warm blanket wrapping around you, making travel feel sticky and heavy, while the air clings to your skin and encourages frequent breaks in shaded spots to stay cool.

September Average Humidity in San Jose del Valle

This chart illustrates the average monthly humidity levels in San Jose del Valle, 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 Jose del Valle is approximately 78%, 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 Jose del Valle

In San Jose del Valle in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in San Jose del Valle.

Maximum UV Index Levels in San Jose del Valle for September

The chart shows the monthly maximum UV Index (UVI) for San Jose del Valle 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 Jose del Valle typically reaches 12, which falls under the extreme exposure category.

Data source: San Jose del Valle 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 Jose del Valle Compares to Other Months

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

This table compares monthly weather conditions in San Jose del Valle, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (71°F)	23 mm (0.9 inches)	71%	very high
February Weather	22°C (71°F)	29 mm (1.1 inches)	69%	very high
March Weather	22°C (72°F)	1 mm (0.0 inches)	67%	extreme
April Weather	23°C (74°F)	1 mm (0.0 inches)	66%	extreme
May Weather	25°C (77°F)	4 mm (0.2 inches)	69%	extreme
June Weather	26°C (79°F)	171 mm (6.7 inches)	78%	extreme
July Weather	27°C (81°F)	192 mm (7.6 inches)	79%	extreme
August Weather	27°C (81°F)	382 mm (15.0 inches)	78%	extreme
September Weather	26°C (80°F)	358 mm (14.1 inches)	78%	extreme
October Weather	26°C (80°F)	214 mm (8.4 inches)	75%	extreme
November Weather	25°C (77°F)	30 mm (1.2 inches)	74%	very high
December Weather	22°C (73°F)	20 mm (0.8 inches)	74%	high