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September Weather in San Rafael, Mexico

Last updated: August 27, 2025

In September, the average temperature in San Rafael, Mexico hovers around 19°C (66°F). Expect a cool minimum of 9°C (48°F) and a warm maximum reaching 30°C (86°F). During this period, the area experiences 108 mm (4.3 in) of precipitation over approximately 14 days, contributing to an average humidity level of 82%.

September Temperature in San Rafael

In September in San Rafael, the average temperature is 19°C (66°F). Maximums can reach 30°C (86°F) and minimums can drop to as low as 9°C (48°F). This makes it a great time for travelers to enjoy pleasant weather while exploring the area.

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

The chart illustrates September temperature patterns in San Rafael, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Rafael, September typically has an average temperature of 19°C (66°F), with highs reaching up to 30°C (86°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec474854606570676865615447
Data source: Temperature data for San Rafael 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 Rafael

In San Rafael in September, the total precipitation amount is 108 mm (4.3 in) spread over 14 days.

September Precipitation Trends in San Rafael

The chart displays monthly precipitation patterns in San Rafael, 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 Rafael, September typically receives around 108 mm (4.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec3550396980241167108454534
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Rafael

In San Rafael in September humidity is 82%. With an average temperature of 19°C (66°F), this humidity feels like a warm blanket wrapping around you, making it slightly uncomfortable for traveling as you might find yourself constantly seeking shade or a cool breeze.

September Average Humidity in San Rafael

This chart illustrates the average monthly humidity levels in San Rafael, 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 Rafael is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%67%60%51%47%50%70%82%82%78%78%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Rafael

In San Rafael 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 Rafael.

Maximum UV Index Levels in San Rafael for September

The chart shows the monthly maximum UV Index (UVI) for San Rafael 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 Rafael typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec79111414141313131186
Data source: San Rafael 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 Rafael Compares to Other Months

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

This table compares monthly weather conditions in San Rafael, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)35 mm (1.4 inches)74%high
February Weather9°C (49°F)50 mm (2.0 inches)67%very high
March Weather12°C (54°F)39 mm (1.5 inches)60%extreme
April Weather15°C (60°F)6 mm (0.2 inches)51%extreme
May Weather18°C (65°F)9 mm (0.3 inches)47%extreme
June Weather21°C (71°F)80 mm (3.2 inches)50%extreme
July Weather19°C (67°F)241 mm (9.5 inches)70%extreme
August Weather20°C (68°F)167 mm (6.6 inches)81%extreme
September Weather19°C (66°F)108 mm (4.3 inches)82%extreme
October Weather16°C (62°F)45 mm (1.8 inches)78%extreme
November Weather12°C (55°F)45 mm (1.8 inches)78%very high
December Weather9°C (48°F)34 mm (1.3 inches)80%high

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