nomadseason

September Weather in Santa Rosa, Mexico

Last updated: August 27, 2025

In September, the average temperature in Santa Rosa, Mexico is a warm 28°C (83°F), with lows dipping to 25°C (77°F) and highs reaching up to 34°C (94°F). Expect 219 mm (8.6 in) of precipitation over approximately 17 days, contributing to a high average humidity of 84%. Prepare for a tropical experience!

September Temperature in Santa Rosa

In September in Santa Rosa, the average temperature is 28°C (83°F). Maximum temperatures can reach 34°C (94°F), while minimums may drop to as low as 25°C (77°F). Overall, it's a warm and pleasant destination, perfect for travelers seeking a sunny getaway.

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

The chart illustrates September temperature patterns in Santa Rosa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Rosa, September typically has an average temperature of 28°C (83°F), with highs reaching up to 34°C (94°F) and lows dropping to around 25°C (77°F).
JanFebMarAprMayJunJulAugSepOctNovDec777880828483848483828078
Data source: Temperature data for Santa Rosa generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Santa Rosa

In Santa Rosa, in September, the precipitation amount is 219 mm (8.6 in) over a span of 17 days.

September Precipitation Trends in Santa Rosa

The chart displays monthly precipitation patterns in Santa Rosa, 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 Rosa, September typically receives around 219 mm (8.6 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec4739863428020921914247
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Santa Rosa

In Santa Rosa in September, humidity is 84%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and the air almost stifling for traveling.

September Average Humidity in Santa Rosa

This chart illustrates the average monthly humidity levels in Santa Rosa, 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 Rosa is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%80%73%67%72%73%76%80%84%89%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santa Rosa

In Santa Rosa 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 Santa Rosa.

Maximum UV Index Levels in Santa Rosa for September

The chart shows the monthly maximum UV Index (UVI) for Santa Rosa 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 Rosa typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121313141314131312109
Data source: Santa Rosa 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 Rosa Compares to Other Months

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

This table compares monthly weather conditions in Santa Rosa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)4 mm (0.2 inches)84%very high
February Weather26°C (79°F)7 mm (0.3 inches)80%extreme
March Weather27°C (80°F)3 mm (0.1 inches)73%extreme
April Weather28°C (83°F)9 mm (0.4 inches)67%extreme
May Weather29°C (84°F)86 mm (3.4 inches)72%extreme
June Weather28°C (83°F)342 mm (13.5 inches)73%extreme
July Weather29°C (85°F)80 mm (3.2 inches)76%extreme
August Weather29°C (84°F)209 mm (8.2 inches)80%extreme
September Weather28°C (83°F)219 mm (8.6 inches)84%extreme
October Weather28°C (82°F)142 mm (5.6 inches)89%extreme
November Weather26°C (80°F)4 mm (0.2 inches)88%very high
December Weather25°C (78°F)7 mm (0.3 inches)88%very high

Compare Santa Rosa's Climate with Cities Worldwide