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September Weather in Santa Teresa, Mexico

Last updated: August 27, 2025

In September, the average temperature in Santa Teresa, Mexico hovers around 21°C (70°F), with minimums dipping to 15°C (58°F) and maximums soaring up to 30°C (86°F). Expect a spatial precipitation of 276 mm (10.9 in) spread over 27 days, contributing to an average humidity of 86%. Embrace the lush, vibrant climate as you explore!

September Temperature in Santa Teresa

In September in Santa Teresa, the average temperature is 21°C (70°F), with maximums reaching 30°C (86°F) and minimums dropping as low as 15°C (58°F). This makes it a perfect time for travelers seeking pleasant and mild weather for outdoor activities.

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

The chart illustrates September temperature patterns in Santa Teresa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Teresa, September typically has an average temperature of 21°C (70°F), with highs reaching up to 30°C (86°F) and lows dropping to around 15°C (58°F).
JanFebMarAprMayJunJulAugSepOctNovDec596266687172707170696560
Data source: Temperature data for Santa Teresa 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 Teresa

In Santa Teresa in September, the precipitation amount is 276 mm (10.9 in) recorded over the course of 27 days.

September Precipitation Trends in Santa Teresa

The chart displays monthly precipitation patterns in Santa Teresa, 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 Teresa, September typically receives around 276 mm (10.9 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec353543171513513212761282826
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Teresa

In Santa Teresa in September, humidity is 86%. With an average temperature of 21°C (70°F), this humidity feels like walking through a warm, moist veil, making it essential to stay hydrated and take frequent breaks while exploring the area.

September Average Humidity in Santa Teresa

This chart illustrates the average monthly humidity levels in Santa Teresa, 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 Teresa is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%64%49%47%55%77%82%83%86%83%80%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santa Teresa

In Santa Teresa 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 Santa Teresa.

Maximum UV Index Levels in Santa Teresa for September

The chart shows the monthly maximum UV Index (UVI) for Santa Teresa 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 Teresa typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec811131414131413131297
Data source: Santa Teresa 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 Teresa Compares to Other Months

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

This table compares monthly weather conditions in Santa Teresa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)35 mm (1.4 inches)71%very high
February Weather16°C (62°F)35 mm (1.4 inches)64%extreme
March Weather19°C (66°F)4 mm (0.2 inches)49%extreme
April Weather20°C (68°F)3 mm (0.1 inches)47%extreme
May Weather22°C (72°F)17 mm (0.7 inches)55%extreme
June Weather22°C (72°F)151 mm (5.9 inches)77%extreme
July Weather21°C (70°F)351 mm (13.8 inches)82%extreme
August Weather22°C (71°F)321 mm (12.7 inches)83%extreme
September Weather21°C (70°F)276 mm (10.9 inches)86%extreme
October Weather21°C (70°F)128 mm (5.0 inches)83%extreme
November Weather18°C (65°F)28 mm (1.1 inches)80%very high
December Weather16°C (61°F)25 mm (1.0 inches)83%high

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