September Weather in Castanos, Mexico

Last updated: August 26, 2025

In September, the average temperature in Castanos, Mexico hovers around 24°C (75°F), with a comfortable average humidity of 77%. Prepare for a range as the temperatures can dip to a chilly 13°C (55°F) or soar to a sweltering 37°C (99°F). Don't forget your umbrella, as the area sees an average of 139 mm (5.5 in) of precipitation over 14 days that month. Stay cool and dry!

September Temperature in Castanos

In September in Castanos, the average temperature is 24°C (75°F). The maximum can reach 37°C (99°F) and the minimum can be as low as 13°C (55°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities while comfortably experiencing the warm climate.

September Weather in Castanos: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Castanos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castanos, September typically has an average temperature of 24°C (75°F), with highs reaching up to 37°C (99°F) and lows dropping to around 13°C (55°F).

Data source: Temperature data for Castanos generated using information from the Copernicus Climate Change Service.

September Precipitation in Castanos

In Castanos, in September, the precipitation amount is 139 mm (5.5 in) over the course of 14 days.

September Precipitation Trends in Castanos

The chart displays monthly precipitation patterns in Castanos, 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 Castanos, September typically receives around 139 mm (5.5 inches) of precipitation spread over approximately 14 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Castanos

In Castanos in September humidity is 77%. With an average temperature of 24°C (75°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities feel stifling and may require frequent breaks to stay hydrated while exploring.

September Average Humidity in Castanos

This chart illustrates the average monthly humidity levels in Castanos, 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 Castanos 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 Castanos

In Castanos 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 Castanos.

Maximum UV Index Levels in Castanos for September

The chart shows the monthly maximum UV Index (UVI) for Castanos 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 Castanos typically reaches 12, which falls under the extreme exposure category.

Data source: Castanos 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 Castanos Compares to Other Months

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

This table compares monthly weather conditions in Castanos, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (55°F)	9 mm (0.4 inches)	83%	high
February Weather	15°C (60°F)	7 mm (0.3 inches)	74%	very high
March Weather	19°C (67°F)	22 mm (0.9 inches)	75%	extreme
April Weather	23°C (73°F)	19 mm (0.8 inches)	74%	extreme
May Weather	26°C (79°F)	49 mm (1.9 inches)	79%	extreme
June Weather	27°C (81°F)	44 mm (1.7 inches)	77%	extreme
July Weather	27°C (81°F)	84 mm (3.3 inches)	64%	extreme
August Weather	27°C (81°F)	49 mm (1.9 inches)	61%	extreme
September Weather	24°C (75°F)	139 mm (5.5 inches)	77%	extreme
October Weather	21°C (70°F)	44 mm (1.7 inches)	83%	very high
November Weather	17°C (62°F)	15 mm (0.6 inches)	85%	high
December Weather	14°C (58°F)	21 mm (0.8 inches)	89%	high