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September Weather in Rio Casca, Brazil

Last updated: August 22, 2025

In Rio Casca, Brazil, the average temperature in September hovers around 23°C (74°F), with minimums dropping to 13°C (55°F) and maximums soaring to 37°C (99°F). Expect some moisture, as precipitation averages 21 mm (0.8 in) over a span of 3 days. The average humidity stays at a comfortable 63%, making this month pleasantly warm and inviting.

September Temperature in Rio Casca

In September in Rio Casca, the average temperature is 23°C (74°F), with maximums reaching 37°C (99°F) and minimums dropping as low as 13°C (55°F). This pleasant climate makes it an ideal destination for travelers looking to enjoy a warm getaway.

September Weather in Rio Casca: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rio Casca, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Casca, September typically has an average temperature of 23°C (74°F), with highs reaching up to 37°C (99°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec787777747069676873757576
Data source: Temperature data for Rio Casca 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 Rio Casca

In Rio Casca in September, the precipitation amount is 21 mm (0.8 in) over a period of 3 days.

September Precipitation Trends in Rio Casca

The chart displays monthly precipitation patterns in Rio Casca, 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 Rio Casca, September typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec981901215739741821117155163
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rio Casca

In Rio Casca in September, humidity is 63%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making it quite comfortable for traveling, yet reminding you to stay hydrated as you explore.

September Average Humidity in Rio Casca

This chart illustrates the average monthly humidity levels in Rio Casca, 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 Rio Casca is approximately 63%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%85%88%86%82%82%77%72%63%48%61%68%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rio Casca

In Rio Casca 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 Rio Casca.

Maximum UV Index Levels in Rio Casca for September

The chart shows the monthly maximum UV Index (UVI) for Rio Casca 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 Rio Casca typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161514129781012131416
Data source: Rio Casca 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 Rio Casca Compares to Other Months

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

This table compares monthly weather conditions in Rio Casca, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)98 mm (3.9 inches)83%extreme
February Weather25°C (77°F)190 mm (7.5 inches)85%extreme
March Weather25°C (77°F)121 mm (4.8 inches)87%extreme
April Weather23°C (74°F)57 mm (2.3 inches)86%extreme
May Weather21°C (70°F)39 mm (1.5 inches)82%very high
June Weather20°C (69°F)7 mm (0.3 inches)82%high
July Weather19°C (67°F)4 mm (0.1 inches)77%very high
August Weather20°C (69°F)18 mm (0.7 inches)72%very high
September Weather23°C (74°F)21 mm (0.8 inches)63%extreme
October Weather24°C (76°F)116 mm (4.6 inches)48%extreme
November Weather24°C (75°F)155 mm (6.1 inches)61%extreme
December Weather25°C (76°F)163 mm (6.4 inches)68%extreme

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