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September Weather in Santa Catarina, Mexico

Last updated: August 27, 2025

In September, the average temperature in Santa Catarina, Mexico hovers around 25°C (77°F), creating a warm and inviting atmosphere. Expect a minimum of 16°C (61°F) and occasional peaks reaching up to 34°C (94°F). However, with 229 mm (9.0 in) of precipitation spread over 23 days, be prepared for some wet spells. The air carries an average humidity of 84%, adding to the tropical feel of this vibrant locale.

September Temperature in Santa Catarina

In September in Santa Catarina, the average temperature is 25°C (77°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 16°C (61°F). This mild climate makes it an ideal time for travelers to explore and enjoy outdoor activities in Santa Catarina.

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 25°C (77°F), with highs reaching up to 34°C (94°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec626670757878777876736763
Data source: Temperature data for Santa Catarina generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Santa Catarina

In Santa Catarina in September, the total precipitation amount is 229 mm (9.0 in), which falls over the course of 23 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 229 mm (9.0 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec6958721031522081491582292939846
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Catarina

In Santa Catarina in September, humidity is 84%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities challenging and prompting travelers to seek shade and stay hydrated.

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 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%86%83%80%82%79%72%74%84%92%91%91%
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 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Santa Catarina.

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 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710121212131312121187
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.
 TemperaturePrecipitationHumidityUV
January Weather17°C (62°F)68 mm (2.7 inches)88%high
February Weather19°C (66°F)57 mm (2.3 inches)86%very high
March Weather21°C (70°F)72 mm (2.8 inches)83%extreme
April Weather24°C (75°F)103 mm (4.0 inches)80%extreme
May Weather26°C (79°F)152 mm (6.0 inches)82%extreme
June Weather25°C (78°F)208 mm (8.2 inches)79%extreme
July Weather25°C (78°F)149 mm (5.9 inches)72%extreme
August Weather25°C (78°F)158 mm (6.2 inches)74%extreme
September Weather25°C (77°F)229 mm (9.0 inches)84%extreme
October Weather23°C (73°F)293 mm (11.5 inches)92%extreme
November Weather20°C (68°F)98 mm (3.9 inches)91%very high
December Weather17°C (64°F)46 mm (1.8 inches)91%high

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