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September Weather in Viamao, Brazil

Last updated: August 22, 2025

In September, the average temperature in Viamao, Brazil hovers around 18°C (65°F). However, be prepared for a swing in temperatures; it can dip as low as 4°C (40°F) and soar up to a sizzling 36°C (96°F). Expect 157 mm (6.2 in) of precipitation spread over 11 days, contributing to an average humidity level of 84%.

September Temperature in Viamao

In September in Viamao, the average temperature is 18°C (65°F). Maximums can reach 36°C (96°F) and minimums can be as low as 4°C (40°F). This variety in temperatures makes it essential for travelers to pack accordingly, ensuring they are prepared for both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Viamao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Viamao, September typically has an average temperature of 18°C (65°F), with highs reaching up to 36°C (96°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec787674706360586064687175
Data source: Temperature data for Viamao 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 Viamao

In Viamao in September, the precipitation amount is 157 mm (6.2 in) over a span of 11 days.

September Precipitation Trends in Viamao

The chart displays monthly precipitation patterns in Viamao, 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 Viamao, September typically receives around 157 mm (6.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec107117112731491051187215713611186
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Viamao

In Viamao in September, humidity is 84%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and slightly uncomfortable as the air clings to your skin and limits your breath.

September Average Humidity in Viamao

This chart illustrates the average monthly humidity levels in Viamao, 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 Viamao 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 Viamao

In Viamao 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 Viamao.

Maximum UV Index Levels in Viamao for September

The chart shows the monthly maximum UV Index (UVI) for Viamao 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 Viamao typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312964579121314
Data source: Viamao 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 Viamao Compares to Other Months

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

This table compares monthly weather conditions in Viamao, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)107 mm (4.2 inches)77%extreme
February Weather25°C (77°F)117 mm (4.6 inches)79%extreme
March Weather23°C (74°F)112 mm (4.4 inches)79%extreme
April Weather21°C (70°F)73 mm (2.9 inches)82%very high
May Weather17°C (63°F)149 mm (5.9 inches)87%high
June Weather15°C (60°F)105 mm (4.1 inches)85%moderate
July Weather14°C (58°F)118 mm (4.6 inches)82%moderate
August Weather16°C (60°F)72 mm (2.8 inches)81%high
September Weather18°C (65°F)157 mm (6.2 inches)84%very high
October Weather20°C (68°F)136 mm (5.3 inches)85%extreme
November Weather21°C (71°F)111 mm (4.4 inches)82%extreme
December Weather24°C (75°F)86 mm (3.4 inches)84%extreme

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