September Weather in Plan de Santo Tomas, Mexico

Last updated: August 27, 2025

In September, the average temperature in Plan de Santo Tomas, Mexico hovers around 23°C (73°F), with a minimum of 17°C (63°F) and a maximum reaching up to 31°C (87°F). Expect heavy precipitation, averaging 242 mm (9.5 in) throughout 27 rainy days. The average humidity during this time is a muggy 77%, making it a month to prepare for both warmth and wetness.

September Temperature in Plan de Santo Tomas

In September in Plan de Santo Tomas, the average temperature is 23°C (73°F). Maximums can reach 31°C (87°F) and minimums can be as low as 17°C (63°F). This mild climate makes Plan de Santo Tomas an ideal destination for outdoor activities and exploration during this month.

September Weather in Plan de Santo Tomas: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Plan de Santo Tomas, 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 Santo Tomas, September typically has an average temperature of 23°C (73°F), with highs reaching up to 31°C (87°F) and lows dropping to around 17°C (63°F).

Data source: Temperature data for Plan de Santo Tomas generated using information from the Copernicus Climate Change Service.

September Precipitation in Plan de Santo Tomas

In Plan de Santo Tomas in September, the total precipitation amount is 242 mm (9.5 in) spread over 27 days.

September Precipitation Trends in Plan de Santo Tomas

The chart displays monthly precipitation patterns in Plan de Santo Tomas, 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 Santo Tomas, September typically receives around 242 mm (9.5 inches) of precipitation spread over approximately 27 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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September Humidity in Plan de Santo Tomas

In Plan de Santo Tomas in September, humidity is 77%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable but bearable. It's essential to stay hydrated and take frequent breaks to enjoy the sights while avoiding overheating.

September Average Humidity in Plan de Santo Tomas

This chart illustrates the average monthly humidity levels in Plan de Santo Tomas, 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 Santo Tomas is approximately 77%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Plan de Santo Tomas

In Plan de Santo Tomas 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 Plan de Santo Tomas, you can check here.

Maximum UV Index Levels in Plan de Santo Tomas for September

The chart shows the monthly maximum UV Index (UVI) for Plan de Santo Tomas 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 Santo Tomas typically reaches 14, which falls under the extreme exposure category.

Data source: Plan de Santo Tomas 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 Santo Tomas Compares to Other Months

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

This table compares monthly weather conditions in Plan de Santo Tomas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (65°F)	85 mm (3.3 inches)	84%	very high
February Weather	19°C (67°F)	51 mm (2.0 inches)	73%	extreme
March Weather	20°C (69°F)	52 mm (2.0 inches)	59%	extreme
April Weather	23°C (74°F)	64 mm (2.5 inches)	52%	extreme
May Weather	24°C (76°F)	165 mm (6.5 inches)	53%	extreme
June Weather	23°C (74°F)	320 mm (12.6 inches)	55%	extreme
July Weather	22°C (73°F)	146 mm (5.8 inches)	61%	extreme
August Weather	23°C (73°F)	194 mm (7.6 inches)	71%	extreme
September Weather	23°C (73°F)	242 mm (9.5 inches)	77%	extreme
October Weather	22°C (72°F)	257 mm (10.1 inches)	78%	extreme
November Weather	20°C (69°F)	129 mm (5.1 inches)	82%	very high
December Weather	19°C (66°F)	69 mm (2.7 inches)	86%	very high