nomadseason

September Weather in Tonantins, Brazil

Last updated: August 22, 2025

In September, the average temperature in Tonantins, Brazil hovers around 27°C (80°F), offering a pleasant climate for outdoor activities. However, temperatures can vary, with minimums dipping to 22°C (71°F) and maximums soaring to 35°C (96°F). Visitors should also be prepared for some rainfall, as precipitation can reach 131 mm (5.1 in) over approximately 22 days. With an average humidity of 38%, you can expect a comfortable atmosphere for your adventures!

September Temperature in Tonantins

In September in Tonantins, the average temperature is 27°C (80°F). Maximum temperatures can reach 35°C (96°F), while minimums can drop to as low as 22°C (71°F). This makes it an ideal time to enjoy outdoor activities and sightseeing in a warm, pleasant climate.

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

The chart illustrates September temperature patterns in Tonantins, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tonantins, September typically has an average temperature of 27°C (80°F), with highs reaching up to 35°C (96°F) and lows dropping to around 22°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec797979797878787980808079
Data source: Temperature data for Tonantins 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 Tonantins

In Tonantins in September, the precipitation amount is 131 mm (5.1 in) spread over 22 days.

September Precipitation Trends in Tonantins

The chart displays monthly precipitation patterns in Tonantins, 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 Tonantins, September typically receives around 131 mm (5.1 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec286282340344322206158107131198252328
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Tonantins

In Tonantins in September humidity is 38%. With an average temperature of 27°C (80°F), this humidity feels like a comfortable, dry warmth that is pleasant for traveling, allowing you to explore without feeling excessively sticky or overheated.

September Average Humidity in Tonantins

This chart illustrates the average monthly humidity levels in Tonantins, 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 Tonantins is approximately 38%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%74%76%86%90%85%71%48%38%43%66%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Tonantins

In Tonantins 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 Tonantins.

Maximum UV Index Levels in Tonantins for September

The chart shows the monthly maximum UV Index (UVI) for Tonantins 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 Tonantins typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616161312111213141314
Data source: Tonantins 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 Tonantins Compares to Other Months

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

This table compares monthly weather conditions in Tonantins, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)286 mm (11.3 inches)83%extreme
February Weather26°C (79°F)282 mm (11.1 inches)74%extreme
March Weather26°C (79°F)340 mm (13.4 inches)76%extreme
April Weather26°C (79°F)344 mm (13.5 inches)86%extreme
May Weather26°C (78°F)322 mm (12.7 inches)90%extreme
June Weather25°C (78°F)206 mm (8.1 inches)85%extreme
July Weather25°C (78°F)158 mm (6.2 inches)71%extreme
August Weather26°C (79°F)107 mm (4.2 inches)48%extreme
September Weather27°C (80°F)131 mm (5.1 inches)38%extreme
October Weather27°C (80°F)198 mm (7.8 inches)43%extreme
November Weather26°C (80°F)252 mm (9.9 inches)66%extreme
December Weather26°C (79°F)328 mm (12.9 inches)87%extreme

Compare Tonantins's Climate with Cities Worldwide