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September Weather in San Nicolas, Mexico

Last updated: August 26, 2025

In San Nicolas, Mexico, the average temperature in September hovers around 24°C (76°F), with a minimum of 19°C (66°F) and a maximum reaching up to 32°C (90°F). Expect 255 mm (10.0 in) of precipitation spread over 27 days, contributing to an average humidity level of 80%. Prepare for a tropical vibe as you explore this vibrant locale!

September Temperature in San Nicolas

In September in San Nicolas, the average temperature is 24°C (76°F). Maximums can reach 32°C (90°F) and minimums can be as low as 19°C (66°F). This pleasant weather makes it an ideal time for outdoor activities and exploring the local attractions.

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 24°C (76°F), with highs reaching up to 32°C (90°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec717376787876777775747371
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 precipitation amount is 255 mm (10.0 in) occurring over the course of 27 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 255 mm (10.0 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec1559231302571041872552143716
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 80%. With an average temperature of 24°C (76°F), this humidity feels like a warm, sticky embrace that can make exploring outdoors quite draining, so it's essential to stay hydrated and take breaks in the shade while traveling.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%68%64%67%74%78%82%82%80%81%80%75%
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 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 Nicolas, you can check here.

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 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141415141413109
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 Weather22°C (71°F)15 mm (0.6 inches)70%very high
February Weather23°C (74°F)5 mm (0.2 inches)68%extreme
March Weather24°C (76°F)9 mm (0.4 inches)64%extreme
April Weather26°C (79°F)23 mm (0.9 inches)67%extreme
May Weather26°C (79°F)130 mm (5.1 inches)74%extreme
June Weather24°C (76°F)257 mm (10.1 inches)78%extreme
July Weather25°C (78°F)104 mm (4.1 inches)81%extreme
August Weather25°C (77°F)187 mm (7.4 inches)82%extreme
September Weather24°C (76°F)255 mm (10.0 inches)80%extreme
October Weather24°C (75°F)214 mm (8.4 inches)81%extreme
November Weather23°C (73°F)37 mm (1.4 inches)80%very high
December Weather22°C (72°F)16 mm (0.6 inches)75%very high

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