September Weather in San Jose de Guaymas, Mexico

Last updated: August 27, 2025

In San Jose de Guaymas, Mexico, the average temperature in September reaches a warm 30°C (87°F), with extremes ranging from a comfortable 20°C (68°F) to a scorching 42°C (107°F). Expect about 53 mm (2.1 in) of precipitation over 6 days, contributing to a high average humidity of 76%. Whether you're seeking sunshine or a refreshing rain shower, San Jose de Guaymas has a dynamic climate waiting for you!

September Temperature in San Jose de Guaymas

In September in San Jose de Guaymas, the average temperature is 30°C (87°F). Maximum can reach 42°C (107°F) and minimum can be as low as 20°C (68°F). Be prepared for warm weather, and don't forget to stay hydrated while exploring the beautiful sights of San Jose de Guaymas.

September Weather in San Jose de Guaymas: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Jose de Guaymas, 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 de Guaymas, September typically has an average temperature of 30°C (87°F), with highs reaching up to 42°C (107°F) and lows dropping to around 20°C (68°F).

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

September Precipitation in San Jose de Guaymas

In San Jose de Guaymas in September, the precipitation amount is 53 mm (2.1 in) over a span of 6 days.

September Precipitation Trends in San Jose de Guaymas

The chart displays monthly precipitation patterns in San Jose de Guaymas, 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 de Guaymas, September typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 6 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 de Guaymas

In San Jose de Guaymas in September, humidity is 76%. With an average temperature of 30°C (87°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and leaving a sheen of sweat on your skin, which can be quite taxing for traveling.

September Average Humidity in San Jose de Guaymas

This chart illustrates the average monthly humidity levels in San Jose de Guaymas, 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 de Guaymas is approximately 76%, 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 de Guaymas

In San Jose de Guaymas in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in San Jose de Guaymas.

Maximum UV Index Levels in San Jose de Guaymas for September

The chart shows the monthly maximum UV Index (UVI) for San Jose de Guaymas 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 de Guaymas typically reaches 11, which falls under the extreme exposure category.

Data source: San Jose de Guaymas 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 de Guaymas Compares to Other Months

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

This table compares monthly weather conditions in San Jose de Guaymas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	17°C (64°F)	12 mm (0.5 inches)	71%	moderate
February Weather	18°C (65°F)	8 mm (0.3 inches)	66%	very high
March Weather	20°C (68°F)	12 mm (0.5 inches)	58%	very high
April Weather	23°C (74°F)	0 mm (0.0 inches)	52%	extreme
May Weather	26°C (79°F)	0 mm (0.0 inches)	51%	extreme
June Weather	30°C (86°F)	5 mm (0.2 inches)	51%	extreme
July Weather	32°C (90°F)	7 mm (0.3 inches)	60%	extreme
August Weather	32°C (90°F)	19 mm (0.7 inches)	73%	extreme
September Weather	30°C (87°F)	53 mm (2.1 inches)	76%	extreme
October Weather	27°C (82°F)	17 mm (0.7 inches)	72%	very high
November Weather	23°C (73°F)	10 mm (0.4 inches)	72%	high
December Weather	18°C (66°F)	8 mm (0.3 inches)	72%	moderate