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May Weather in Tres Rios, Brazil

Last updated: August 22, 2025

In May, the average temperature in Tres Rios, Brazil is a pleasant 20°C (68°F). Visitors can expect a minimum of 7°C (45°F) and a maximum of 31°C (88°F), making it a versatile month for various activities. Precipitation is moderate, with around 36 mm (1.4 in) falling over 6 days. With an average humidity level of 81%, the climate feels refreshing, perfect for exploring the beauty of Tres Rios!

May Temperature in Tres Rios

In May in Tres Rios, the average temperature is 20°C (68°F). The maximum can reach 31°C (88°F) and the minimum can be as low as 7°C (45°F). This makes it an ideal time to explore the sights while enjoying comfortable weather.

May Weather in Tres Rios: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Tres Rios, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tres Rios, May typically has an average temperature of 20°C (68°F), with highs reaching up to 31°C (88°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec767575716766646571727274
Data source: Temperature data for Tres Rios 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 Tres Rios

In Tres Rios in May, the total precipitation amount is 36 mm (1.4 in), which falls over the course of 6 days.

May Precipitation Trends in Tres Rios

The chart displays monthly precipitation patterns in Tres Rios, 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 Tres Rios, May typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec120211143483619113745107204202
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Tres Rios

In Tres Rios in May humidity is 81%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace that can make outdoor activities feel steamy and exhausting, potentially leading travelers to seek shade or a refreshing drink more often.

May Average Humidity in Tres Rios

This chart illustrates the average monthly humidity levels in Tres Rios, 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 Tres Rios is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%83%81%80%76%73%68%61%72%75%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Tres Rios

In Tres Rios in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Tres Rios.

Maximum UV Index Levels in Tres Rios for May

The chart shows the monthly maximum UV Index (UVI) for Tres Rios 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 Tres Rios typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161513118681012131415
Data source: Tres Rios 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 Tres Rios Compares to Other Months

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

This table compares monthly weather conditions in Tres Rios, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)120 mm (4.7 inches)85%extreme
February Weather24°C (75°F)211 mm (8.3 inches)85%extreme
March Weather24°C (75°F)143 mm (5.6 inches)86%extreme
April Weather22°C (72°F)48 mm (1.9 inches)83%extreme
May Weather20°C (68°F)36 mm (1.4 inches)81%very high
June Weather19°C (67°F)19 mm (0.7 inches)80%high
July Weather18°C (64°F)11 mm (0.4 inches)76%very high
August Weather18°C (66°F)37 mm (1.4 inches)73%very high
September Weather22°C (71°F)45 mm (1.8 inches)68%extreme
October Weather22°C (72°F)107 mm (4.2 inches)61%extreme
November Weather22°C (72°F)203 mm (8.0 inches)72%extreme
December Weather23°C (74°F)202 mm (7.9 inches)75%extreme

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