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September Weather in Casitas, Mexico

Last updated: August 27, 2025

In Casitas, Mexico, the average temperature in September reaches a warm 28°C (82°F), with lows of 21°C (70°F) and highs of 33°C (92°F). You can expect 209 mm (8.2 in) of precipitation spread over 17 days, coupled with a comfortable average humidity of 80%. Whether you're planning outdoor activities or cozy indoor moments, this weather sets the perfect stage!

September Temperature in Casitas

In September in Casitas, the average temperature is 28°C (82°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 21°C (70°F). This pleasant climate makes Casitas an ideal destination for travelers looking to enjoy warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in Casitas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Casitas, September typically has an average temperature of 28°C (82°F), with highs reaching up to 33°C (92°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec707173778182828382797471
Data source: Temperature data for Casitas 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 Casitas

In Casitas in September, the precipitation amount is 209 mm (8.2 in) spread over 17 days.

September Precipitation Trends in Casitas

The chart displays monthly precipitation patterns in Casitas, 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 Casitas, September typically receives around 209 mm (8.2 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec797281641041277413320919514558
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Casitas

In Casitas 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 Casitas

This chart illustrates the average monthly humidity levels in Casitas, 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 Casitas is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%82%81%80%77%76%78%80%82%84%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Casitas

In Casitas 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 Casitas.

Maximum UV Index Levels in Casitas for September

The chart shows the monthly maximum UV Index (UVI) for Casitas 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 Casitas typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810111213131312121087
Data source: Casitas 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 Casitas Compares to Other Months

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

This table compares monthly weather conditions in Casitas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (70°F)79 mm (3.1 inches)82%very high
February Weather22°C (71°F)72 mm (2.8 inches)83%very high
March Weather23°C (74°F)81 mm (3.2 inches)82%extreme
April Weather25°C (78°F)64 mm (2.5 inches)81%extreme
May Weather27°C (82°F)104 mm (4.1 inches)80%extreme
June Weather28°C (82°F)127 mm (5.0 inches)77%extreme
July Weather28°C (83°F)74 mm (2.9 inches)76%extreme
August Weather28°C (83°F)133 mm (5.2 inches)78%extreme
September Weather28°C (82°F)209 mm (8.2 inches)80%extreme
October Weather26°C (79°F)195 mm (7.7 inches)82%very high
November Weather23°C (74°F)145 mm (5.7 inches)84%very high
December Weather22°C (71°F)58 mm (2.3 inches)85%high

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