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September Weather in San Nicolas, Mexico

Last updated: August 26, 2025

In San Nicolas, Mexico, the average temperature in September is a warm 27°C (81°F), with minimums dropping to 22°C (72°F) and maximums climbing as high as 36°C (97°F). You can expect around 365 mm (14.4 in) of precipitation spread over 25 days, paired with an average humidity of 82%.

September Temperature in San Nicolas

In September in San Nicolas, the average temperature is 27°C (81°F), with maximums reaching up to 36°C (97°F) and minimums dropping as low as 22°C (72°F). This makes San Nicolas an ideal destination for those looking to enjoy warm and pleasant weather during their travels.

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

The chart illustrates September temperature patterns in San Nicolas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Nicolas, September typically has an average temperature of 27°C (81°F), with highs reaching up to 36°C (97°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec808081828481828180808179
Data source: Temperature data for San Nicolas 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 Nicolas

In San Nicolas in September, the total precipitation amount is 365 mm (14.4 in) spread over 25 days.

September Precipitation Trends in San Nicolas

The chart displays monthly precipitation patterns in San Nicolas, 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 Nicolas, September typically receives around 365 mm (14.4 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec2100333061542633662682718
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Nicolas

In San Nicolas in September humidity is 82%. With an average temperature of 27°C (81°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel more exhausting, and leaving you longing for the relief of air-conditioned spaces during your travels.

September Average Humidity in San Nicolas

This chart illustrates the average monthly humidity levels in San Nicolas, 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 Nicolas 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 San Nicolas

In San Nicolas 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 San Nicolas.

Maximum UV Index Levels in San Nicolas for September

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

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

This table compares monthly weather conditions in San Nicolas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)2 mm (0.1 inches)65%very high
February Weather27°C (80°F)0 mm (0.0 inches)61%extreme
March Weather27°C (82°F)0 mm (0.0 inches)59%extreme
April Weather28°C (83°F)0 mm (0.0 inches)62%extreme
May Weather29°C (84°F)33 mm (1.3 inches)73%extreme
June Weather27°C (82°F)306 mm (12.0 inches)78%extreme
July Weather28°C (82°F)153 mm (6.0 inches)79%extreme
August Weather27°C (81°F)263 mm (10.3 inches)82%extreme
September Weather27°C (81°F)365 mm (14.4 inches)82%extreme
October Weather27°C (81°F)268 mm (10.5 inches)79%extreme
November Weather27°C (81°F)27 mm (1.1 inches)72%very high
December Weather26°C (80°F)18 mm (0.7 inches)70%very high

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