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September Weather in San Francisco Ozomatlan, Mexico

Last updated: August 27, 2025

In September, the average temperature in San Francisco Ozomatlan, Mexico hovers around 24°C (76°F), with a comfortable minimum of 18°C (65°F) and an occasional peak of 33°C (92°F). Expect a wet month with 241 mm (9.5 in) of precipitation spread across 26 days, leading to a notably high average humidity of 82%.

September Temperature in San Francisco Ozomatlan

In September in San Francisco Ozomatlan, the average temperature is 24°C (76°F). The maximum can reach 33°C (92°F), and the minimum can be as low as 18°C (65°F). It's the perfect time for travelers to enjoy pleasant weather while exploring all that San Francisco Ozomatlan has to offer.

September Weather in San Francisco Ozomatlan: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Francisco Ozomatlan, 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 Ozomatlan, September typically has an average temperature of 24°C (76°F), with highs reaching up to 33°C (92°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec737579818277777675767573
Data source: Temperature data for San Francisco Ozomatlan generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in San Francisco Ozomatlan

In San Francisco Ozomatlan in September, the total precipitation amount is 241 mm (9.5 in) over the course of 26 days.

September Precipitation Trends in San Francisco Ozomatlan

The chart displays monthly precipitation patterns in San Francisco Ozomatlan, 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 Ozomatlan, September typically receives around 241 mm (9.5 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec141444177137211241123141
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Francisco Ozomatlan

In San Francisco Ozomatlan in September, humidity is 82%. With an average temperature of 24°C (76°F), this humidity feels like wearing a warm, damp blanket, making travel uncomfortable and sticky as you explore.

September Average Humidity in San Francisco Ozomatlan

This chart illustrates the average monthly humidity levels in San Francisco Ozomatlan, 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 Ozomatlan is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%61%59%62%73%78%79%82%82%79%72%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Francisco Ozomatlan

In San Francisco Ozomatlan 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 Francisco Ozomatlan, you can check here.

Maximum UV Index Levels in San Francisco Ozomatlan for September

The chart shows the monthly maximum UV Index (UVI) for San Francisco Ozomatlan 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 Ozomatlan typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1011141414141413141298
Data source: San Francisco Ozomatlan 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 Ozomatlan Compares to Other Months

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

This table compares monthly weather conditions in San Francisco Ozomatlan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (73°F)1 mm (0.0 inches)65%very high
February Weather24°C (76°F)4 mm (0.2 inches)61%extreme
March Weather26°C (79°F)1 mm (0.1 inches)59%extreme
April Weather27°C (82°F)4 mm (0.2 inches)62%extreme
May Weather28°C (82°F)44 mm (1.7 inches)73%extreme
June Weather25°C (78°F)176 mm (6.9 inches)78%extreme
July Weather25°C (77°F)137 mm (5.4 inches)79%extreme
August Weather25°C (77°F)211 mm (8.3 inches)82%extreme
September Weather24°C (76°F)241 mm (9.5 inches)82%extreme
October Weather24°C (76°F)123 mm (4.9 inches)79%extreme
November Weather24°C (75°F)14 mm (0.6 inches)72%very high
December Weather23°C (73°F)1 mm (0.0 inches)70%very high

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