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September Weather in Santa Rosa, Uruguay

Last updated: August 28, 2025

In Santa Rosa, Uruguay, the average temperature in September hovers around 14°C (58°F), with a minimum reaching as low as 2°C (36°F) and a maximum soaring to 29°C (85°F). Expect to see approximately 86 mm (3.4 in) of precipitation over about 7 days, accompanied by a moderate average humidity of 76%.

September Temperature in Santa Rosa

In September in Santa Rosa, the average temperature is 14°C (58°F), with maximums reaching up to 29°C (85°F) and minimums dipping as low as 2°C (36°F). This mild climate makes Santa Rosa an ideal destination for outdoor activities and exploration during this time of year.

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 14°C (58°F), with highs reaching up to 29°C (85°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec747369655854525457616771
Data source: Temperature data for Santa Rosa 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 Rosa

In Santa Rosa in September, the total precipitation amount is 86 mm (3.4 in) over a span of 7 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 86 mm (3.4 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec699775751091061019086926765
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Rosa

In Santa Rosa in September humidity is 76%. With an average temperature of 14°C (58°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel sticky and draining, and prompting travelers to seek shade and stay hydrated often.

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 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec63%69%73%79%83%80%72%72%76%71%68%65%
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 is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311754468111314
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 Weather24°C (75°F)69 mm (2.7 inches)63%extreme
February Weather23°C (73°F)97 mm (3.8 inches)69%extreme
March Weather21°C (70°F)75 mm (2.9 inches)73%extreme
April Weather18°C (65°F)75 mm (3.0 inches)79%high
May Weather14°C (58°F)109 mm (4.3 inches)82%moderate
June Weather12°C (54°F)106 mm (4.2 inches)80%moderate
July Weather11°C (52°F)101 mm (4.0 inches)72%moderate
August Weather12°C (54°F)90 mm (3.5 inches)72%high
September Weather14°C (58°F)86 mm (3.4 inches)76%very high
October Weather16°C (61°F)91 mm (3.6 inches)71%extreme
November Weather19°C (67°F)67 mm (2.6 inches)68%extreme
December Weather22°C (72°F)65 mm (2.5 inches)65%extreme

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