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September Weather in Porto Walter, Brazil

Last updated: August 22, 2025

In Porto Walter, Brazil, the average temperature in September hovers around 27°C (80°F). The climate can swing dramatically, with minimum temperatures dipping to 18°C (65°F) and soaring to a maximum of 36°C (97°F). Expect about 103 mm (4.1 in) of precipitation spread over 15 days, complemented by an average humidity level of 40%. Stay prepared for varying weather while enjoying the warm atmosphere!

September Temperature in Porto Walter

In September in Porto Walter, the average temperature is 27°C (80°F), with maximums reaching 36°C (97°F) and minimums dipping as low as 18°C (65°F). This pleasant climate makes it an ideal time to explore the area and enjoy outdoor activities.

September Weather in Porto Walter: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Porto Walter, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porto Walter, September typically has an average temperature of 27°C (80°F), with highs reaching up to 36°C (97°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec787878787777777980797979
Data source: Temperature data for Porto Walter 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 Porto Walter

In Porto Walter in September, the precipitation amount is 103 mm (4.1 in) during a span of 15 days.

September Precipitation Trends in Porto Walter

The chart displays monthly precipitation patterns in Porto Walter, 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 Porto Walter, September typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec250294308214118825075103190240242
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Porto Walter

In Porto Walter in September, humidity is 40%. With an average temperature of 27°C (80°F), this humidity feels like a comfortable embrace, making it ideal for leisurely strolls and exploring the local attractions without feeling overly sticky or weighed down by heat.

September Average Humidity in Porto Walter

This chart illustrates the average monthly humidity levels in Porto Walter, 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 Porto Walter is approximately 40%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%86%88%82%67%48%39%40%51%74%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Porto Walter

In Porto Walter in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Porto Walter.

Maximum UV Index Levels in Porto Walter for September

The chart shows the monthly maximum UV Index (UVI) for Porto Walter 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 Porto Walter typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616151211111213151514
Data source: Porto Walter 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 Porto Walter Compares to Other Months

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

This table compares monthly weather conditions in Porto Walter, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)250 mm (9.9 inches)85%extreme
February Weather26°C (79°F)294 mm (11.6 inches)82%extreme
March Weather26°C (78°F)308 mm (12.1 inches)86%extreme
April Weather26°C (78°F)214 mm (8.4 inches)88%extreme
May Weather25°C (78°F)118 mm (4.7 inches)82%extreme
June Weather25°C (77°F)82 mm (3.2 inches)67%extreme
July Weather25°C (77°F)50 mm (1.9 inches)48%extreme
August Weather26°C (79°F)74 mm (2.9 inches)39%extreme
September Weather27°C (80°F)103 mm (4.1 inches)40%extreme
October Weather26°C (80°F)190 mm (7.5 inches)51%extreme
November Weather26°C (79°F)240 mm (9.5 inches)74%extreme
December Weather26°C (79°F)242 mm (9.5 inches)89%extreme

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