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September Weather in Casas, Mexico

Last updated: August 27, 2025

In September, the average temperature in Casas, Mexico reaches a warm 28°C (82°F), with a variability that sees min temps dip to 17°C (64°F) and max highs soaring to an impressive 42°C (108°F). During this month, expect about 136 mm (5.3 in) of precipitation spread across 15 days, while humidity hovers around a tropical 80%.

September Temperature in Casas

In September in Casas, the average temperature is 28°C (82°F). Maximums can reach 42°C (108°F), while minimums can drop to as low as 17°C (64°F). Be prepared for warm days and cooler evenings while exploring this vibrant destination.

September Weather in Casas: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Casas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Casas, September typically has an average temperature of 28°C (82°F), with highs reaching up to 42°C (108°F) and lows dropping to around 17°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec656974798485858682777066
Data source: Temperature data for Casas 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 Casas

In Casas in September, the precipitation amount is 136 mm (5.3 in) over a span of 15 days.

September Precipitation Trends in Casas

The chart displays monthly precipitation patterns in Casas, 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 Casas, September typically receives around 136 mm (5.3 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec18133235631039545136863212
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Casas

In Casas in September, humidity is 80%. With an average temperature of 28°C (82°F), this humidity feels like a warm, thick blanket enveloping you, making outdoor activities sweaty and demanding frequent breaks in the shade while traveling.

September Average Humidity in Casas

This chart illustrates the average monthly humidity levels in Casas, 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 Casas is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%83%84%85%79%71%72%80%85%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Casas

In Casas 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 Casas.

Maximum UV Index Levels in Casas for September

The chart shows the monthly maximum UV Index (UVI) for Casas 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 Casas typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec79111212121312121086
Data source: Casas 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 Casas Compares to Other Months

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

This table compares monthly weather conditions in Casas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)18 mm (0.7 inches)87%high
February Weather20°C (69°F)13 mm (0.5 inches)85%very high
March Weather23°C (75°F)32 mm (1.3 inches)83%extreme
April Weather26°C (80°F)35 mm (1.4 inches)84%extreme
May Weather29°C (84°F)63 mm (2.5 inches)85%extreme
June Weather29°C (85°F)103 mm (4.0 inches)79%extreme
July Weather29°C (85°F)95 mm (3.8 inches)71%extreme
August Weather30°C (86°F)45 mm (1.8 inches)72%extreme
September Weather28°C (82°F)136 mm (5.3 inches)80%extreme
October Weather25°C (77°F)86 mm (3.4 inches)85%very high
November Weather21°C (70°F)32 mm (1.2 inches)88%very high
December Weather19°C (67°F)12 mm (0.5 inches)89%high

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