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September Weather in Graseros, Mexico

Last updated: August 27, 2025

In Graseros, Mexico, the average temperature in September hovers around 18°C (65°F). Expect a minimum drop to 6°C (44°F) and delightful highs reaching 27°C (82°F). This month also brings an average precipitation of 153 mm (6.0 in) over approximately 20 days, contributing to a notable average humidity of 86%.

September Temperature in Graseros

In September in Graseros, the average temperature is 18°C (65°F). The maximum can reach 27°C (82°F), and the minimum can be as low as 6°C (44°F). This pleasant climate makes it an ideal time for travelers to explore the area comfortably.

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

The chart illustrates September temperature patterns in Graseros, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Graseros, September typically has an average temperature of 18°C (65°F), with highs reaching up to 27°C (82°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec535762667072676764635853
Data source: Temperature data for Graseros 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 Graseros

In Graseros in September, the precipitation amount is 153 mm (6.0 in) over a span of 20 days.

September Precipitation Trends in Graseros

The chart displays monthly precipitation patterns in Graseros, 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 Graseros, September typically receives around 153 mm (6.0 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec141083166316710415348158
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Graseros

In Graseros in September humidity is 86%. With an average temperature of 18°C (65°F), this humidity feels like you’re wrapped in a warm, heavy blanket, making outdoor activities feel quite muggy and sticky for traveling.

September Average Humidity in Graseros

This chart illustrates the average monthly humidity levels in Graseros, 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 Graseros 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 Graseros

In Graseros 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 Graseros, you can check here.

Maximum UV Index Levels in Graseros for September

The chart shows the monthly maximum UV Index (UVI) for Graseros 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 Graseros typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec811131515141414141298
Data source: Graseros 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 Graseros Compares to Other Months

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

This table compares monthly weather conditions in Graseros, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)14 mm (0.5 inches)71%very high
February Weather14°C (57°F)10 mm (0.4 inches)64%extreme
March Weather17°C (63°F)8 mm (0.3 inches)49%extreme
April Weather19°C (66°F)3 mm (0.1 inches)47%extreme
May Weather21°C (70°F)16 mm (0.6 inches)55%extreme
June Weather22°C (72°F)63 mm (2.5 inches)77%extreme
July Weather19°C (67°F)167 mm (6.6 inches)82%extreme
August Weather20°C (68°F)104 mm (4.1 inches)83%extreme
September Weather18°C (65°F)153 mm (6.0 inches)86%extreme
October Weather17°C (63°F)48 mm (1.9 inches)83%extreme
November Weather14°C (58°F)15 mm (0.6 inches)80%very high
December Weather12°C (54°F)8 mm (0.3 inches)83%very high

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