September Weather in Santa Catarina, Mexico

Last updated: August 26, 2025

In Santa Catarina, Mexico, the average temperature in September hovers around 19°C (67°F), making it a pleasant time to visit. Expect minimums of 10°C (50°F) and maximums reaching up to 30°C (85°F). However, don't forget to pack an umbrella, as the region experiences about 179 mm (7.0 in) of precipitation spread over 22 days. With an average humidity of 81%, the air adds a bit of tropical flair to your adventures!

September Temperature in Santa Catarina

In September in Santa Catarina, the average temperature is 19°C (67°F). Maximums can reach 30°C (85°F), and minimums can be as low as 10°C (50°F). This mild climate makes Santa Catarina an ideal destination for outdoor activities and sightseeing during this time of year.

September Weather in Santa Catarina: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Catarina, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Catarina, September typically has an average temperature of 19°C (67°F), with highs reaching up to 30°C (85°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Santa Catarina

In Santa Catarina in September, the total precipitation amount is 179 mm (7.0 in) spread over 22 days.

September Precipitation Trends in Santa Catarina

The chart displays monthly precipitation patterns in Santa Catarina, 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 Santa Catarina, September typically receives around 179 mm (7.0 inches) of precipitation spread over approximately 22 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 Santa Catarina

In Santa Catarina in September humidity is 81%. With an average temperature of 19°C (67°F), this humidity feels like a heavy blanket enveloping you, making travel somewhat uncomfortable as sweat clings to your skin and the air feels thick, prompting you to seek shade and hydration frequently.

September Average Humidity in Santa Catarina

This chart illustrates the average monthly humidity levels in Santa Catarina, 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 Santa Catarina is approximately 81%, 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 Santa Catarina

In Santa Catarina 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 Santa Catarina, you can check here.

Maximum UV Index Levels in Santa Catarina for September

The chart shows the monthly maximum UV Index (UVI) for Santa Catarina 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 Santa Catarina typically reaches 14, which falls under the extreme exposure category.

Data source: Santa Catarina 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 Santa Catarina Compares to Other Months

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

This table compares monthly weather conditions in Santa Catarina, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	15 mm (0.6 inches)	74%	very high
February Weather	16°C (61°F)	19 mm (0.8 inches)	65%	extreme
March Weather	18°C (65°F)	27 mm (1.1 inches)	58%	extreme
April Weather	21°C (69°F)	29 mm (1.2 inches)	58%	extreme
May Weather	22°C (72°F)	60 mm (2.4 inches)	67%	extreme
June Weather	21°C (70°F)	162 mm (6.4 inches)	76%	extreme
July Weather	20°C (68°F)	136 mm (5.4 inches)	67%	extreme
August Weather	20°C (68°F)	114 mm (4.5 inches)	68%	extreme
September Weather	19°C (67°F)	179 mm (7.0 inches)	81%	extreme
October Weather	18°C (64°F)	123 mm (4.9 inches)	83%	extreme
November Weather	15°C (59°F)	41 mm (1.6 inches)	84%	very high
December Weather	14°C (57°F)	12 mm (0.5 inches)	81%	very high