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May Weather in Brazil, United States

Last updated: June 24, 2025

In May, the average temperature in Brazil, United States hovers around 18°C (66°F). Be prepared for a range, as temperatures can dip to a brisk 0°C (33°F) or soar to a sweltering 35°C (94°F). Expect about 134 mm (5.3 in) of precipitation over 14 days, accompanied by an average humidity of 79%.

May Temperature in Brazil

In May in Brazil, the average temperature is 18°C (66°F). Maximums can reach 35°C (94°F), and minimums can be as low as 0°C (33°F). It's advisable to pack layers and be prepared for both warm days and chilly nights when traveling to Brazil during this time.

May Weather in Brazil: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Brazil, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brazil, May typically has an average temperature of 18°C (66°F), with highs reaching up to 35°C (94°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec313444536574777470584237
Data source: Temperature data for Brazil 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.

May Precipitation in Brazil

In Brazil in May, the total precipitation amount is 134 mm (5.3 in) over the course of 14 days.

May Precipitation Trends in Brazil

The chart displays monthly precipitation patterns in Brazil, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Brazil, May typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec8698130105134115106108691129790
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Brazil

In Brazil in May, humidity is 79%. With an average temperature of 18°C (66°F), this humidity feels like a warm, enveloping blanket, making outdoor activities slightly uncomfortable and sticky, but also offering a vibrant atmosphere perfect for exploring local cafes and shaded parks.

May Average Humidity in Brazil

This chart illustrates the average monthly humidity levels in Brazil, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Brazil is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Brazil

In Brazil in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Brazil.

Maximum UV Index Levels in Brazil for May

The chart shows the monthly maximum UV Index (UVI) for Brazil in May, 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 May, the maximum UV index in Brazil typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Brazil May 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 May Weather in Brazil Compares to Other Months

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

This table compares monthly weather conditions in Brazil, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)85 mm (3.4 inches)87%moderate
February Weather1°C (34°F)98 mm (3.9 inches)85%moderate
March Weather6°C (44°F)130 mm (5.1 inches)86%high
April Weather12°C (53°F)105 mm (4.1 inches)84%very high
May Weather18°C (66°F)134 mm (5.3 inches)79%very high
June Weather23°C (75°F)115 mm (4.5 inches)82%extreme
July Weather25°C (78°F)106 mm (4.2 inches)79%very high
August Weather24°C (75°F)108 mm (4.3 inches)70%very high
September Weather21°C (71°F)68 mm (2.7 inches)69%very high
October Weather15°C (58°F)112 mm (4.4 inches)76%high
November Weather6°C (42°F)97 mm (3.8 inches)88%moderate
December Weather3°C (37°F)90 mm (3.5 inches)87%moderate

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