September Weather in Ahuatlan, Mexico

Last updated: August 27, 2025

In Ahuatlan, Mexico, the average temperature in September is a pleasant 22°C (73°F), with minimums dipping to 14°C (58°F) and highs reaching up to 32°C (90°F). Expect heavy precipitation with an average of 279 mm (11.0 in) spread over 23 days, making the air quite humid at 82%. Plan accordingly to enjoy all that this vibrant location has to offer!

September Temperature in Ahuatlan

In September in Ahuatlan, the average temperature is 22°C (73°F). Maximums can reach 32°C (90°F) and minimums can be as low as 14°C (58°F). This makes it a perfect time for travelers to enjoy outdoor activities while experiencing comfortable weather.

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

The chart illustrates September temperature patterns in Ahuatlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ahuatlan, September typically has an average temperature of 22°C (73°F), with highs reaching up to 32°C (90°F) and lows dropping to around 14°C (58°F).

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

September Precipitation in Ahuatlan

In Ahuatlan in September, the total precipitation amount is 279 mm (11.0 in) recorded over the course of 23 days.

September Precipitation Trends in Ahuatlan

The chart displays monthly precipitation patterns in Ahuatlan, 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 Ahuatlan, September typically receives around 279 mm (11.0 inches) of precipitation spread over approximately 23 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 Ahuatlan

In Ahuatlan in September, humidity is 82%. With an average temperature of 22°C (73°F), this humidity feels like a warm, heavy embrace, making traveling feel sticky and draining, but the tropical atmosphere also brings a lush vibrancy to the surroundings.

September Average Humidity in Ahuatlan

This chart illustrates the average monthly humidity levels in Ahuatlan, 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 Ahuatlan is approximately 82%, 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 Ahuatlan

In Ahuatlan 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 Ahuatlan.

Maximum UV Index Levels in Ahuatlan for September

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

Data source: Ahuatlan 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 Ahuatlan Compares to Other Months

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

This table compares monthly weather conditions in Ahuatlan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	2 mm (0.1 inches)	84%	very high
February Weather	21°C (71°F)	3 mm (0.1 inches)	78%	extreme
March Weather	23°C (74°F)	5 mm (0.2 inches)	75%	extreme
April Weather	25°C (78°F)	16 mm (0.6 inches)	70%	extreme
May Weather	26°C (78°F)	78 mm (3.1 inches)	77%	extreme
June Weather	24°C (75°F)	204 mm (8.0 inches)	76%	extreme
July Weather	23°C (74°F)	145 mm (5.7 inches)	68%	extreme
August Weather	23°C (74°F)	211 mm (8.3 inches)	70%	extreme
September Weather	22°C (73°F)	279 mm (11.0 inches)	82%	extreme
October Weather	22°C (72°F)	95 mm (3.7 inches)	91%	extreme
November Weather	21°C (70°F)	19 mm (0.8 inches)	89%	very high
December Weather	20°C (68°F)	2 mm (0.1 inches)	88%	very high