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September Weather in Santa Clara, Mexico

Last updated: August 27, 2025

In September, the average temperature in Santa Clara, Mexico hovers around 15°C (59°F), with daily highs reaching up to 24°C (76°F) and dropping as low as 4°C (40°F). Expect 160 mm (6.3 in) of precipitation over 21 days, accompanied by an average humidity of 82%, creating a pleasantly moist atmosphere. Grab your umbrella and enjoy the charm of this season!

September Temperature in Santa Clara

In September in Santa Clara, the average temperature is 15°C (59°F). Maximum temperatures can reach 24°C (76°F), while minimums can drop to as low as 4°C (40°F). This pleasant climate makes Santa Clara a great destination for travelers seeking comfortable weather and outdoor adventures.

September Weather in Santa Clara: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Clara, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Clara, September typically has an average temperature of 15°C (59°F), with highs reaching up to 24°C (76°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec515558606260595959575452
Data source: Temperature data for Santa Clara 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 Santa Clara

In Santa Clara in September, the precipitation amount is 160 mm (6.3 in), occurring over the course of 21 days.

September Precipitation Trends in Santa Clara

The chart displays monthly precipitation patterns in Santa 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 Santa Clara, September typically receives around 160 mm (6.3 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec13924436015512015516084257
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Clara

In Santa Clara in September, humidity is 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.

September Average Humidity in Santa Clara

This chart illustrates the average monthly humidity levels in Santa 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 Santa Clara is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%78%75%71%77%76%68%70%82%91%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santa Clara

In Santa Clara 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 Santa Clara, you can check here.

Maximum UV Index Levels in Santa Clara for September

The chart shows the monthly maximum UV Index (UVI) for Santa 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 Santa Clara typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121415151515141413109
Data source: Santa 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 Santa Clara Compares to Other Months

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

This table compares monthly weather conditions in Santa Clara, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)12 mm (0.5 inches)84%very high
February Weather13°C (55°F)9 mm (0.4 inches)78%extreme
March Weather14°C (58°F)24 mm (0.9 inches)75%extreme
April Weather16°C (61°F)43 mm (1.7 inches)70%extreme
May Weather16°C (62°F)60 mm (2.4 inches)77%extreme
June Weather16°C (61°F)155 mm (6.1 inches)76%extreme
July Weather15°C (59°F)120 mm (4.7 inches)68%extreme
August Weather15°C (59°F)155 mm (6.1 inches)70%extreme
September Weather15°C (59°F)160 mm (6.3 inches)82%extreme
October Weather14°C (57°F)84 mm (3.3 inches)91%extreme
November Weather12°C (54°F)25 mm (1.0 inches)89%very high
December Weather11°C (53°F)7 mm (0.3 inches)88%very high

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