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September Weather in San Nicolas, Mexico

Last updated: August 27, 2025

In September, the average temperature in San Nicolas, Mexico is a comfortable 24°C (75°F), with a minimum of 16°C (62°F) and a maximum reaching 32°C (91°F). This month also brings significant precipitation, totaling 258 mm (10.2 in) over 26 days, contributing to an average humidity of 86%. Prepare for a mixture of warmth and moisture during your stay!

September Temperature in San Nicolas

In September, in San Nicolas, the average temperature is 24°C (75°F). The maximum can reach 32°C (91°F) and the minimum can be as low as 16°C (62°F). This climate makes it an ideal destination for travelers looking to enjoy mild and pleasant weather.

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 (75°F), with highs reaching up to 32°C (91°F) and lows dropping to around 16°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec646770747675757574736865
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 reaches 258 mm (10.2 in) over the course of 26 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 258 mm (10.2 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec493654651392151622122581416728
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 86%. With an average temperature of 24°C (75°F), this humidity feels like a warm, sticky embrace, making outdoor activities somewhat uncomfortable and requiring travelers to stay hydrated and take breaks in the shade.

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 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%86%84%81%82%81%81%82%86%90%91%91%
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.
JanFebMarAprMayJunJulAugSepOctNovDec811121313141413131198
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 Weather18°C (64°F)49 mm (1.9 inches)88%very high
February Weather19°C (67°F)36 mm (1.4 inches)86%extreme
March Weather21°C (70°F)54 mm (2.1 inches)84%extreme
April Weather23°C (75°F)65 mm (2.6 inches)81%extreme
May Weather25°C (76°F)139 mm (5.5 inches)82%extreme
June Weather24°C (76°F)215 mm (8.5 inches)81%extreme
July Weather24°C (75°F)161 mm (6.4 inches)81%extreme
August Weather24°C (75°F)212 mm (8.3 inches)82%extreme
September Weather24°C (75°F)258 mm (10.2 inches)86%extreme
October Weather23°C (73°F)141 mm (5.5 inches)90%extreme
November Weather20°C (68°F)67 mm (2.6 inches)91%very high
December Weather18°C (65°F)28 mm (1.1 inches)91%very high

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