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September Weather in Llano Grande, Mexico

Last updated: August 27, 2025

In September, the average temperature in Llano Grande, Mexico hovers around 28°C (82°F), providing a warm and inviting climate. Temperatures can dip to a minimum of 25°C (77°F), while reaching a maximum of 32°C (89°F). Be prepared for some rainfall, as 358 mm (14.1 in) of precipitation is expected over 24 days, contributing to an average humidity of 82%.

September Temperature in Llano Grande

In September in Llano Grande, the average temperature is 28°C (82°F). Maximums can reach 32°C (89°F), and minimums can be as low as 25°C (77°F). This pleasant climate makes Llano Grande an ideal destination for travelers looking to enjoy warm weather and outdoor activities.

September Weather in Llano Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Llano Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Llano Grande, September typically has an average temperature of 28°C (82°F), with highs reaching up to 32°C (89°F) and lows dropping to around 25°C (77°F).
JanFebMarAprMayJunJulAugSepOctNovDec818181818382838282828281
Data source: Temperature data for Llano Grande 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 Llano Grande

In Llano Grande in September, the total precipitation amount is 358 mm (14.1 in), spread over 24 days.

September Precipitation Trends in Llano Grande

The chart displays monthly precipitation patterns in Llano Grande, 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 Llano Grande, September typically receives around 358 mm (14.1 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec3100323231302853582692618
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Llano Grande

In Llano Grande in September humidity is 82%. With an average temperature of 28°C (82°F), this humidity feels like walking through a warm, dense blanket, making outdoor activities a challenge and necessitating frequent breaks to stay hydrated.

September Average Humidity in Llano Grande

This chart illustrates the average monthly humidity levels in Llano Grande, 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 Llano Grande 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 Llano Grande

In Llano Grande 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 Llano Grande.

Maximum UV Index Levels in Llano Grande for September

The chart shows the monthly maximum UV Index (UVI) for Llano Grande 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 Llano Grande typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1011131314141313131198
Data source: Llano Grande 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 Llano Grande Compares to Other Months

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

This table compares monthly weather conditions in Llano Grande, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)2 mm (0.1 inches)65%very high
February Weather27°C (81°F)1 mm (0.0 inches)61%extreme
March Weather27°C (81°F)0 mm (0.0 inches)59%extreme
April Weather27°C (82°F)0 mm (0.0 inches)62%extreme
May Weather28°C (83°F)32 mm (1.3 inches)73%extreme
June Weather28°C (83°F)323 mm (12.7 inches)78%extreme
July Weather28°C (84°F)130 mm (5.1 inches)79%extreme
August Weather28°C (83°F)285 mm (11.2 inches)82%extreme
September Weather28°C (82°F)358 mm (14.1 inches)82%extreme
October Weather28°C (82°F)269 mm (10.6 inches)79%extreme
November Weather28°C (82°F)26 mm (1.0 inches)72%very high
December Weather27°C (81°F)18 mm (0.7 inches)70%very high

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