nomadseason

September Weather in Sao Joao da Barra, Brazil

Last updated: August 22, 2025

In September, the average temperature in Sao Joao da Barra, Brazil hovers around 23°C (74°F), offering a pleasant climate for outdoor activities. Expect minimum temperatures of 19°C (66°F), while maximums can reach as high as 29°C (85°F). With an average humidity of 72% and 48 mm (1.9 in) of precipitation spread over 7 days, be prepared for the occasional shower amidst the warmth!

September Temperature in Sao Joao da Barra

In September in Sao Joao da Barra, the average temperature is 23°C (74°F), with maximums reaching 29°C (85°F) and minimums dropping as low as 19°C (66°F). This pleasant climate makes it an ideal time for traveling, allowing for enjoyable outdoor activities and exploration.

September Weather in Sao Joao da Barra: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sao Joao da Barra, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Joao da Barra, September typically has an average temperature of 23°C (74°F), with highs reaching up to 29°C (85°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec797979777573727173757577
Data source: Temperature data for Sao Joao da Barra 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 Sao Joao da Barra

In Sao Joao da Barra in September, the total precipitation amount is 48 mm (1.9 in) over a span of 7 days.

September Precipitation Trends in Sao Joao da Barra

The chart displays monthly precipitation patterns in Sao Joao da Barra, 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 Sao Joao da Barra, September typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec681229682643026454889145112
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Sao Joao da Barra

In Sao Joao da Barra in September humidity is 72%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket that clings to the skin, making outdoor activities a challenge but offering a refreshing atmosphere for leisurely strolls in the shade.

September Average Humidity in Sao Joao da Barra

This chart illustrates the average monthly humidity levels in Sao Joao da Barra, 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 Sao Joao da Barra is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%85%86%85%82%81%79%75%72%67%69%72%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sao Joao da Barra

In Sao Joao da Barra in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Sao Joao da Barra.

Maximum UV Index Levels in Sao Joao da Barra for September

The chart shows the monthly maximum UV Index (UVI) for Sao Joao da Barra 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 Sao Joao da Barra typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16141311868911131415
Data source: Sao Joao da Barra 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 Sao Joao da Barra Compares to Other Months

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

This table compares monthly weather conditions in Sao Joao da Barra, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)68 mm (2.7 inches)80%extreme
February Weather26°C (79°F)122 mm (4.8 inches)85%extreme
March Weather26°C (79°F)96 mm (3.8 inches)86%extreme
April Weather25°C (78°F)81 mm (3.2 inches)85%extreme
May Weather24°C (75°F)64 mm (2.5 inches)82%very high
June Weather23°C (74°F)30 mm (1.2 inches)81%high
July Weather22°C (72°F)26 mm (1.0 inches)79%very high
August Weather22°C (72°F)45 mm (1.8 inches)75%very high
September Weather23°C (74°F)48 mm (1.9 inches)72%extreme
October Weather24°C (75°F)89 mm (3.5 inches)66%extreme
November Weather24°C (75°F)145 mm (5.7 inches)69%extreme
December Weather25°C (77°F)112 mm (4.4 inches)72%extreme

Compare Sao Joao da Barra's Climate with Cities Worldwide