September Weather in San Jose del Carmen, Mexico

Last updated: August 27, 2025

In September, the average temperature in San Jose del Carmen, Mexico is a comfortable 21°C (70°F), with lows of 16°C (61°F) and highs reaching up to 29°C (85°F). However, this month sees 337 mm (13.3 in) of precipitation over 29 days, contributing to an average humidity of 83%. Ideal for those who enjoy a warm and slightly humid climate!

September Temperature in San Jose del Carmen

In September in San Jose del Carmen, the average temperature is 21°C (70°F). Maximums can reach 29°C (85°F), and minimums can be as low as 16°C (61°F). This mild climate makes San Jose del Carmen an ideal destination for travelers seeking comfortable weather conditions.

September Weather in San Jose del Carmen: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Jose del Carmen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Jose del Carmen, September typically has an average temperature of 21°C (70°F), with highs reaching up to 29°C (85°F) and lows dropping to around 16°C (61°F).

Data source: Temperature data for San Jose del Carmen generated using information from the Copernicus Climate Change Service.

September Precipitation in San Jose del Carmen

In San Jose del Carmen in September, the precipitation amount is 337 mm (13.3 in) spread over 29 days.

September Precipitation Trends in San Jose del Carmen

The chart displays monthly precipitation patterns in San Jose del Carmen, 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 San Jose del Carmen, September typically receives around 337 mm (13.3 inches) of precipitation spread over approximately 29 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 San Jose del Carmen

In San Jose del Carmen in September humidity is 83%. With an average temperature of 21°C (70°F), this humidity feels like you’re enveloped in a warm, tropical embrace, making it essential to stay hydrated and take breaks during your travels.

September Average Humidity in San Jose del Carmen

This chart illustrates the average monthly humidity levels in San Jose del Carmen, 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 San Jose del Carmen is approximately 83%, 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 San Jose del Carmen

In San Jose del Carmen 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 San Jose del Carmen, you can check here.

Maximum UV Index Levels in San Jose del Carmen for September

The chart shows the monthly maximum UV Index (UVI) for San Jose del Carmen 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 San Jose del Carmen typically reaches 14, which falls under the extreme exposure category.

Data source: San Jose del Carmen 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 San Jose del Carmen Compares to Other Months

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

This table compares monthly weather conditions in San Jose del Carmen, 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)	16 mm (0.6 inches)	70%	very high
February Weather	19°C (66°F)	26 mm (1.0 inches)	65%	extreme
March Weather	21°C (70°F)	7 mm (0.3 inches)	59%	extreme
April Weather	22°C (71°F)	2 mm (0.1 inches)	60%	extreme
May Weather	23°C (73°F)	54 mm (2.1 inches)	67%	extreme
June Weather	22°C (72°F)	287 mm (11.3 inches)	80%	extreme
July Weather	21°C (71°F)	296 mm (11.6 inches)	81%	extreme
August Weather	21°C (71°F)	399 mm (15.7 inches)	83%	extreme
September Weather	21°C (70°F)	337 mm (13.3 inches)	83%	extreme
October Weather	21°C (70°F)	234 mm (9.2 inches)	80%	extreme
November Weather	20°C (68°F)	45 mm (1.8 inches)	77%	very high
December Weather	18°C (65°F)	18 mm (0.7 inches)	76%	very high