September Weather in San Francisco (Mata Clara), Mexico

Last updated: August 27, 2025

In September, the average temperature in San Francisco (Mata Clara), Mexico hovers around 26°C (79°F), providing a warm climate for residents and visitors alike. Expect temperatures to range from a comfortable 18°C (64°F) to a sweltering 35°C (95°F). However, be prepared for 250 mm (9.9 in) of precipitation spread over 24 days, resulting in a high average humidity of 86% that can make the air feel quite muggy.

September Temperature in San Francisco (Mata Clara)

In September, in San Francisco (Mata Clara), the average temperature is 26°C (79°F). Maximums can reach 35°C (95°F), and minimums can be as low as 18°C (64°F). This makes San Francisco (Mata Clara) an ideal destination for travelers seeking warm weather and comfortable conditions.

September Weather in San Francisco (Mata Clara): Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Francisco (Mata Clara), showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Francisco (Mata Clara), September typically has an average temperature of 26°C (79°F), with highs reaching up to 35°C (95°F) and lows dropping to around 18°C (64°F).

Data source: Temperature data for San Francisco (Mata Clara) generated using information from the Copernicus Climate Change Service.

September Precipitation in San Francisco (Mata Clara)

In San Francisco (Mata Clara) in September, the precipitation amount is 250 mm (9.9 in) over a period of 24 days.

September Precipitation Trends in San Francisco (Mata Clara)

The chart displays monthly precipitation patterns in San Francisco (Mata Clara), 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 Francisco (Mata Clara), September typically receives around 250 mm (9.9 inches) of precipitation spread over approximately 24 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 Francisco (Mata Clara)

In San Francisco (Mata Clara) in September, humidity is 86%. With an average temperature of 26°C (79°F), this humidity feels like a warm, heavy blanket clinging to your skin, making even short walks a challenge and turning travel into a sticky, sweat-inducing experience.

September Average Humidity in San Francisco (Mata Clara)

This chart illustrates the average monthly humidity levels in San Francisco (Mata Clara), 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 Francisco (Mata Clara) 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 San Francisco (Mata Clara)

In San Francisco (Mata Clara) 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 San Francisco (Mata Clara).

Maximum UV Index Levels in San Francisco (Mata Clara) for September

The chart shows the monthly maximum UV Index (UVI) for San Francisco (Mata Clara) 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 Francisco (Mata Clara) typically reaches 13, which falls under the extreme exposure category.

Data source: San Francisco (Mata Clara) 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 Francisco (Mata Clara) Compares to Other Months

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

This table compares monthly weather conditions in San Francisco (Mata Clara), showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	66 mm (2.6 inches)	88%	very high
February Weather	21°C (70°F)	68 mm (2.7 inches)	86%	extreme
March Weather	23°C (74°F)	81 mm (3.2 inches)	84%	extreme
April Weather	25°C (78°F)	92 mm (3.6 inches)	81%	extreme
May Weather	27°C (81°F)	112 mm (4.4 inches)	82%	extreme
June Weather	26°C (79°F)	274 mm (10.8 inches)	81%	extreme
July Weather	26°C (79°F)	137 mm (5.4 inches)	81%	extreme
August Weather	26°C (79°F)	176 mm (6.9 inches)	82%	extreme
September Weather	26°C (79°F)	250 mm (9.9 inches)	86%	extreme
October Weather	25°C (77°F)	223 mm (8.8 inches)	90%	extreme
November Weather	22°C (72°F)	137 mm (5.4 inches)	91%	very high
December Weather	20°C (69°F)	63 mm (2.5 inches)	91%	very high