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September Weather in Cidreira, Brazil

Last updated: August 22, 2025

In September, the average temperature in Cidreira, Brazil is a pleasant 18°C (64°F), with a minimum of 9°C (48°F) and a maximum reaching 27°C (82°F). Expect a fair amount of rain, with precipitation totaling around 151 mm (5.9 in) over 12 days. Additionally, the average humidity hovers around a high 84%, making for a typically moist and mild climate.

September Temperature in Cidreira

In September in Cidreira, the average temperature is 18°C (64°F). Maximum can reach 27°C (82°F) and minimum can be as low as 9°C (48°F). This pleasant weather makes it an ideal time for outdoor activities and exploring the attractions in Cidreira.

September Weather in Cidreira: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cidreira, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cidreira, September typically has an average temperature of 18°C (64°F), with highs reaching up to 27°C (82°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec777675716662596164677073
Data source: Temperature data for Cidreira 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 Cidreira

In Cidreira in September, the precipitation amount is 151 mm (5.9 in) over the course of 12 days.

September Precipitation Trends in Cidreira

The chart displays monthly precipitation patterns in Cidreira, 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 Cidreira, September typically receives around 151 mm (5.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec74879579148100108641511219470
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cidreira

In Cidreira in September humidity is 84%. With an average temperature of 18°C (64°F), this humidity feels like there's a heavy blanket wrapping around you, making travel feel a bit sticky and muggy, potentially leading to fatigue if you're not prepared.

September Average Humidity in Cidreira

This chart illustrates the average monthly humidity levels in Cidreira, 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 Cidreira is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%79%79%82%87%85%82%81%84%85%82%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cidreira

In Cidreira in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Cidreira.

Maximum UV Index Levels in Cidreira for September

The chart shows the monthly maximum UV Index (UVI) for Cidreira 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 Cidreira typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312964569121315
Data source: Cidreira 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 Cidreira Compares to Other Months

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

This table compares monthly weather conditions in Cidreira, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)74 mm (2.9 inches)77%extreme
February Weather25°C (77°F)87 mm (3.4 inches)79%extreme
March Weather24°C (75°F)95 mm (3.7 inches)79%extreme
April Weather22°C (72°F)79 mm (3.1 inches)82%very high
May Weather19°C (66°F)148 mm (5.8 inches)87%high
June Weather17°C (62°F)100 mm (3.9 inches)85%moderate
July Weather15°C (60°F)108 mm (4.3 inches)82%moderate
August Weather16°C (61°F)64 mm (2.5 inches)81%high
September Weather18°C (64°F)151 mm (5.9 inches)84%very high
October Weather20°C (68°F)121 mm (4.8 inches)85%extreme
November Weather21°C (70°F)94 mm (3.7 inches)82%extreme
December Weather23°C (74°F)70 mm (2.7 inches)84%extreme

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