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September Weather in San Diego de Alcala, Mexico

Last updated: August 27, 2025

In September, the average temperature in San Diego de Alcala, Mexico is a pleasant 18°C (65°F). You can expect temperatures to range from a minimum of 9°C (48°F) to a maximum of 27°C (81°F). However, be prepared for frequent showers, as precipitation averages 227 mm (9.0 in) over 22 days, with humidity levels soaring to a comfortable 85%.

September Temperature in San Diego de Alcala

In September in San Diego de Alcala, the average temperature is 18°C (65°F). Maximum can reach 27°C (81°F) and minimum can be as low as 9°C (48°F). This mild climate makes San Diego de Alcala an ideal destination for travelers looking to enjoy pleasant weather and outdoor activities.

September Weather in San Diego de Alcala: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Diego de Alcala, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Diego de Alcala, September typically has an average temperature of 18°C (65°F), with highs reaching up to 27°C (81°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec576065687068656564636057
Data source: Temperature data for San Diego de Alcala 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 San Diego de Alcala

In San Diego de Alcala in September, the total precipitation amount is 227 mm (9.0 in) spread over 22 days.

September Precipitation Trends in San Diego de Alcala

The chart displays monthly precipitation patterns in San Diego de Alcala, 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 San Diego de Alcala, September typically receives around 227 mm (9.0 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec111217105418028626222779357
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Diego de Alcala

In San Diego de Alcala in September humidity is 85%. With an average temperature of 18°C (65°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities challenging but creating a lush, vibrant atmosphere that invites exploration.

September Average Humidity in San Diego de Alcala

This chart illustrates the average monthly humidity levels in San Diego de Alcala, 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 San Diego de Alcala is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%64%54%61%75%83%83%85%85%79%76%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Diego de Alcala

In San Diego de Alcala 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 San Diego de Alcala, you can check here.

Maximum UV Index Levels in San Diego de Alcala for September

The chart shows the monthly maximum UV Index (UVI) for San Diego de Alcala 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 San Diego de Alcala typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911141514141413141298
Data source: San Diego de Alcala 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 San Diego de Alcala Compares to Other Months

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

This table compares monthly weather conditions in San Diego de Alcala, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (57°F)11 mm (0.4 inches)70%very high
February Weather16°C (61°F)12 mm (0.5 inches)64%extreme
March Weather18°C (65°F)17 mm (0.7 inches)54%extreme
April Weather20°C (68°F)10 mm (0.4 inches)61%extreme
May Weather21°C (70°F)54 mm (2.1 inches)75%extreme
June Weather20°C (68°F)180 mm (7.1 inches)83%extreme
July Weather18°C (65°F)285 mm (11.2 inches)83%extreme
August Weather18°C (65°F)262 mm (10.3 inches)85%extreme
September Weather18°C (65°F)227 mm (9.0 inches)85%extreme
October Weather17°C (64°F)78 mm (3.1 inches)79%extreme
November Weather16°C (60°F)35 mm (1.4 inches)76%very high
December Weather14°C (57°F)6 mm (0.3 inches)74%very high

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