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September Weather in San Juan Bautista, Mexico

Last updated: August 27, 2025

In September, the average temperature in San Juan Bautista, Mexico hovers around 24°C (76°F), offering a pleasant climate. Temperatures can vary, with a cool minimum of 19°C (66°F) at night and a warm maximum of 32°C (91°F) during the day. Be prepared for some rain, as precipitation totals 306 mm (12.0 in) over 28 days, and expect a high average humidity of 83%.

September Temperature in San Juan Bautista

In September in San Juan Bautista, the average temperature is 24°C (76°F), with maximums reaching up to 32°C (91°F) and minimums dipping as low as 19°C (66°F). This mild and pleasant climate makes it an ideal destination for travelers seeking a comfortable escape.

September Weather in San Juan Bautista: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Juan Bautista, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan Bautista, September typically has an average temperature of 24°C (76°F), with highs reaching up to 32°C (91°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec656770727577767675757166
Data source: Temperature data for San Juan Bautista 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 Juan Bautista

In San Juan Bautista in September, the precipitation amount is 306 mm (12.0 in) spread out over 28 days.

September Precipitation Trends in San Juan Bautista

The chart displays monthly precipitation patterns in San Juan Bautista, 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 Juan Bautista, September typically receives around 306 mm (12.0 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec363842131453233393061572823
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Juan Bautista

In San Juan Bautista in September, humidity is 83%. With an average temperature of 24°C (76°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and possibly causing travelers to sweat more quickly, prompting frequent breaks in shaded areas or the search for refreshing beverages.

September Average Humidity in San Juan Bautista

This chart illustrates the average monthly humidity levels in San Juan Bautista, 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 Juan Bautista is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%66%61%56%61%73%82%83%83%79%77%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Juan Bautista

In San Juan Bautista 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 San Juan Bautista.

Maximum UV Index Levels in San Juan Bautista for September

The chart shows the monthly maximum UV Index (UVI) for San Juan Bautista 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 Juan Bautista typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810121313131312121197
Data source: San Juan Bautista 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 Juan Bautista Compares to Other Months

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

This table compares monthly weather conditions in San Juan Bautista, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)36 mm (1.4 inches)74%very high
February Weather19°C (67°F)37 mm (1.5 inches)66%very high
March Weather21°C (70°F)4 mm (0.2 inches)61%extreme
April Weather22°C (72°F)2 mm (0.1 inches)56%extreme
May Weather24°C (75°F)13 mm (0.5 inches)61%extreme
June Weather25°C (77°F)145 mm (5.7 inches)73%extreme
July Weather24°C (76°F)323 mm (12.7 inches)82%extreme
August Weather25°C (76°F)339 mm (13.3 inches)83%extreme
September Weather24°C (76°F)306 mm (12.0 inches)83%extreme
October Weather24°C (75°F)157 mm (6.2 inches)78%extreme
November Weather21°C (71°F)28 mm (1.1 inches)77%very high
December Weather19°C (66°F)23 mm (0.9 inches)78%high

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