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September Weather in Plan de San Luis, Mexico

Last updated: August 27, 2025

In September, the average temperature in Plan de San Luis, Mexico hovers around 30°C (86°F). Expect a comfortable minimum of 22°C (72°F), while highs can reach an impressive 39°C (103°F). The month sees approximately 100 mm (3.9 in) of precipitation spread across 14 days, contributing to a notably high average humidity of 78%. Prepare for a mix of sun and occasional rain!

September Temperature in Plan de San Luis

In September in Plan de San Luis, the average temperature is 30°C (86°F), with maximums reaching up to 39°C (103°F) and minimums dropping as low as 22°C (72°F). This warm climate makes Plan de San Luis an ideal destination for travelers seeking sun and outdoor activities.

September Weather in Plan de San Luis: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Plan de San Luis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Plan de San Luis, September typically has an average temperature of 30°C (86°F), with highs reaching up to 39°C (103°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec656669747984888886847568
Data source: Temperature data for Plan de San Luis 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 Plan de San Luis

In Plan de San Luis in September, the total precipitation amount is 100 mm (3.9 in) spread over 14 days.

September Precipitation Trends in Plan de San Luis

The chart displays monthly precipitation patterns in Plan de San Luis, 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 Plan de San Luis, September typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec81440013329110017259
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Plan de San Luis

In Plan de San Luis in September, humidity is 78%. With an average temperature of 30°C (86°F), this humidity feels like a thick, warm blanket enveloping you, making travel feel more strenuous and leaving you yearning for cool relief.

September Average Humidity in Plan de San Luis

This chart illustrates the average monthly humidity levels in Plan de San Luis, 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 Plan de San Luis is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%67%62%58%59%64%74%78%78%75%74%72%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Plan de San Luis

In Plan de San Luis 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 Plan de San Luis.

Maximum UV Index Levels in Plan de San Luis for September

The chart shows the monthly maximum UV Index (UVI) for Plan de San Luis 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 Plan de San Luis typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec69101212121212121076
Data source: Plan de San Luis 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 Plan de San Luis Compares to Other Months

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

This table compares monthly weather conditions in Plan de San Luis, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)8 mm (0.3 inches)70%high
February Weather19°C (66°F)14 mm (0.6 inches)67%very high
March Weather20°C (69°F)4 mm (0.2 inches)62%very high
April Weather23°C (74°F)0 mm (0.0 inches)58%extreme
May Weather26°C (79°F)0 mm (0.0 inches)59%extreme
June Weather29°C (85°F)13 mm (0.5 inches)64%extreme
July Weather31°C (88°F)32 mm (1.3 inches)74%extreme
August Weather31°C (88°F)90 mm (3.6 inches)78%extreme
September Weather30°C (86°F)100 mm (3.9 inches)78%extreme
October Weather29°C (84°F)17 mm (0.7 inches)75%very high
November Weather24°C (76°F)25 mm (1.0 inches)74%high
December Weather20°C (68°F)9 mm (0.4 inches)72%high

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