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September Weather in Guacui, Brazil

Last updated: August 22, 2025

In September, the average temperature in Guacui, Brazil is a pleasant 21°C (70°F). Expect a range with minimum temperatures dipping to 9°C (49°F) and soaring to a maximum of 34°C (94°F). During this time, precipitation averages 49 mm (1.9 in) over 7 days, and the average humidity hovers around 72%, making for a warm and occasionally wet atmosphere.

September Temperature in Guacui

In September in Guacui, the average temperature is 21°C (70°F), with maximums reaching 34°C (94°F) and minimums dipping as low as 9°C (49°F). This pleasant climate makes it an ideal time for travelers to explore the area and enjoy outdoor activities.

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

The chart illustrates September temperature patterns in Guacui, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guacui, September typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (94°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec757473706665636469717073
Data source: Temperature data for Guacui 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 Guacui

In Guacui in September, the precipitation amount is 49 mm (1.9 in) over the course of 7 days.

September Precipitation Trends in Guacui

The chart displays monthly precipitation patterns in Guacui, 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 Guacui, September typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec1252531731035827173549141200239
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Guacui

In Guacui in September, humidity is 72%. With an average temperature of 21°C (70°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities a bit sticky and sweaty, but still manageable for traveling if you stay hydrated and take regular breaks in the shade.

September Average Humidity in Guacui

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

In Guacui in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Guacui.

Maximum UV Index Levels in Guacui for September

The chart shows the monthly maximum UV Index (UVI) for Guacui 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 Guacui typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161514129781012141515
Data source: Guacui 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 Guacui Compares to Other Months

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

This table compares monthly weather conditions in Guacui, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)125 mm (4.9 inches)80%extreme
February Weather23°C (74°F)253 mm (9.9 inches)85%extreme
March Weather23°C (73°F)173 mm (6.8 inches)86%extreme
April Weather21°C (70°F)103 mm (4.1 inches)85%extreme
May Weather19°C (67°F)58 mm (2.3 inches)82%very high
June Weather19°C (66°F)27 mm (1.1 inches)81%high
July Weather17°C (64°F)17 mm (0.7 inches)79%very high
August Weather18°C (64°F)35 mm (1.4 inches)75%very high
September Weather21°C (70°F)49 mm (1.9 inches)72%extreme
October Weather21°C (71°F)141 mm (5.5 inches)66%extreme
November Weather21°C (70°F)200 mm (7.9 inches)69%extreme
December Weather23°C (73°F)239 mm (9.4 inches)72%extreme

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