September Weather in Ribera la Union (Castano), Mexico

Last updated: August 27, 2025

In September, the average temperature in Ribera la Union (Castano), Mexico hovers around 25°C (78°F), with a minimum temperature of 19°C (67°F) and a maximum reaching 34°C (94°F). Expect 210 mm (8.3 in) of precipitation spread over 26 days, coupled with high humidity at an average of 87%.

September Temperature in Ribera la Union (Castano)

In September in Ribera la Union (Castano), the average temperature is 25°C (78°F). The maximum can reach 34°C (94°F), and the minimum can be as low as 19°C (67°F). This pleasant climate makes it an ideal destination for travelers seeking a warm getaway.

September Weather in Ribera la Union (Castano): Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ribera la Union (Castano), showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ribera la Union (Castano), September typically has an average temperature of 25°C (78°F), with highs reaching up to 34°C (94°F) and lows dropping to around 19°C (67°F).

Data source: Temperature data for Ribera la Union (Castano) generated using information from the Copernicus Climate Change Service.

September Precipitation in Ribera la Union (Castano)

In Ribera la Union (Castano) in September, the precipitation amount is 210 mm (8.3 in) spread over 26 days.

September Precipitation Trends in Ribera la Union (Castano)

The chart displays monthly precipitation patterns in Ribera la Union (Castano), 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 Ribera la Union (Castano), September typically receives around 210 mm (8.3 inches) of precipitation spread over approximately 26 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Ribera la Union (Castano)

In Ribera la Union (Castano) in September, humidity is 87%. With an average temperature of 25°C (78°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities particularly strenuous and requiring frequent breaks for hydration and shade.

September Average Humidity in Ribera la Union (Castano)

This chart illustrates the average monthly humidity levels in Ribera la Union (Castano), 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 Ribera la Union (Castano) is approximately 87%, 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 Ribera la Union (Castano)

In Ribera la Union (Castano) 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 Ribera la Union (Castano).

Maximum UV Index Levels in Ribera la Union (Castano) for September

The chart shows the monthly maximum UV Index (UVI) for Ribera la Union (Castano) 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 Ribera la Union (Castano) typically reaches 13, which falls under the extreme exposure category.

Data source: Ribera la Union (Castano) 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 Ribera la Union (Castano) Compares to Other Months

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

This table compares monthly weather conditions in Ribera la Union (Castano), showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (72°F)	4 mm (0.2 inches)	83%	very high
February Weather	24°C (75°F)	2 mm (0.1 inches)	76%	extreme
March Weather	25°C (78°F)	4 mm (0.1 inches)	66%	extreme
April Weather	27°C (81°F)	19 mm (0.7 inches)	59%	extreme
May Weather	27°C (81°F)	94 mm (3.7 inches)	64%	extreme
June Weather	26°C (78°F)	193 mm (7.6 inches)	69%	extreme
July Weather	26°C (79°F)	113 mm (4.5 inches)	82%	extreme
August Weather	26°C (79°F)	163 mm (6.4 inches)	87%	extreme
September Weather	25°C (78°F)	210 mm (8.3 inches)	87%	extreme
October Weather	25°C (77°F)	172 mm (6.8 inches)	88%	extreme
November Weather	23°C (74°F)	18 mm (0.7 inches)	88%	very high
December Weather	22°C (73°F)	10 mm (0.4 inches)	88%	very high