September Weather in Petapa, Mexico

Last updated: August 27, 2025

In September, the average temperature in Petapa, Mexico is a warm 27°C (80°F). Visitors can expect a minimum of 21°C (71°F) and a comfortable maximum of 36°C (97°F). However, with an average humidity of 84%, be prepared for a moist climate. Rainfall is also notable, with 171 mm (6.7 in) of precipitation over 20 days, making it essential to carry an umbrella during your stay!

September Temperature in Petapa

In September in Petapa, the average temperature is 27°C (80°F). The maximum can reach 36°C (97°F) while the minimum can drop to as low as 21°C (71°F). This pleasant climate makes it an ideal time for travelers to explore the region and enjoy outdoor activities.

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

The chart illustrates September temperature patterns in Petapa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Petapa, September typically has an average temperature of 27°C (80°F), with highs reaching up to 36°C (97°F) and lows dropping to around 21°C (71°F).

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

September Precipitation in Petapa

In Petapa in September, the total precipitation amount is 171 mm (6.7 in), occurring over the course of 20 days.

September Precipitation Trends in Petapa

The chart displays monthly precipitation patterns in Petapa, 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 Petapa, September typically receives around 171 mm (6.7 inches) of precipitation spread over approximately 20 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 Petapa

In Petapa in September, humidity is 84%. With an average temperature of 27°C (80°F), this humidity feels like a thick, warm blanket enveloping you, making travel feel sluggish and exhausting.

September Average Humidity in Petapa

This chart illustrates the average monthly humidity levels in Petapa, 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 Petapa is approximately 84%, 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 Petapa

In Petapa 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 Petapa.

Maximum UV Index Levels in Petapa for September

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

Data source: Petapa 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 Petapa Compares to Other Months

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

This table compares monthly weather conditions in Petapa, 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 (73°F)	11 mm (0.4 inches)	84%	very high
February Weather	24°C (75°F)	13 mm (0.5 inches)	80%	extreme
March Weather	25°C (78°F)	8 mm (0.3 inches)	73%	extreme
April Weather	27°C (81°F)	17 mm (0.7 inches)	67%	extreme
May Weather	28°C (83°F)	47 mm (1.9 inches)	72%	extreme
June Weather	27°C (81°F)	248 mm (9.8 inches)	73%	extreme
July Weather	27°C (81°F)	89 mm (3.5 inches)	76%	extreme
August Weather	27°C (80°F)	171 mm (6.7 inches)	80%	extreme
September Weather	27°C (80°F)	171 mm (6.7 inches)	84%	extreme
October Weather	26°C (78°F)	138 mm (5.4 inches)	89%	extreme
November Weather	24°C (75°F)	19 mm (0.7 inches)	88%	very high
December Weather	23°C (74°F)	11 mm (0.4 inches)	88%	very high