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May Weather in Rio Grande da Serra, Brazil

Last updated: August 22, 2025

In Rio Grande da Serra, Brazil, the average temperature in May hovers around 18°C (65°F), creating a pleasant atmosphere for outdoor activities. However, temperatures can fluctuate, with a minimum of 7°C (45°F) and a maximum reaching 29°C (85°F). Expect a moderate amount of rain, with about 86 mm (3.4 in) spread over 11 days. The average humidity sits at a comfortable 79%, adding to the overall charm of the season.

May Temperature in Rio Grande da Serra

In May in Rio Grande da Serra, the average temperature is 18°C (65°F). Maximums can reach 29°C (85°F) and minimums can be as low as 7°C (45°F). This makes Rio Grande da Serra an ideal destination for travelers seeking a pleasant climate and comfortable weather.

May Weather in Rio Grande da Serra: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Rio Grande da Serra, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Grande da Serra, May typically has an average temperature of 18°C (65°F), with highs reaching up to 29°C (85°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec747373686564626367686872
Data source: Temperature data for Rio Grande da Serra 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 Rio Grande da Serra

In Rio Grande da Serra in May, the precipitation amount is 86 mm (3.4 in), spread over 11 days.

May Precipitation Trends in Rio Grande da Serra

The chart displays monthly precipitation patterns in Rio Grande da Serra, 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 Rio Grande da Serra, May typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec2802562491178681539569182169216
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Rio Grande da Serra

In Rio Grande da Serra in May, humidity is 79%. With an average temperature of 18°C (65°F), this humidity feels like walking through a warm mist, making traveling slightly uncomfortable and sticky, but offering a refreshing escape when you find moments of shade or a breeze.

May Average Humidity in Rio Grande da Serra

This chart illustrates the average monthly humidity levels in Rio Grande da Serra, 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 Rio Grande da Serra is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%84%79%77%72%65%58%50%75%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Rio Grande da Serra

In Rio Grande da Serra 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 Rio Grande da Serra.

Maximum UV Index Levels in Rio Grande da Serra for May

The chart shows the monthly maximum UV Index (UVI) for Rio Grande da Serra 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 Rio Grande da Serra typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151211867911131415
Data source: Rio Grande da Serra 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 Rio Grande da Serra Compares to Other Months

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

This table compares monthly weather conditions in Rio Grande da Serra, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)280 mm (11.0 inches)88%extreme
February Weather23°C (73°F)256 mm (10.1 inches)88%extreme
March Weather23°C (73°F)249 mm (9.8 inches)87%extreme
April Weather20°C (69°F)117 mm (4.6 inches)84%extreme
May Weather18°C (65°F)86 mm (3.4 inches)79%very high
June Weather18°C (65°F)81 mm (3.2 inches)77%high
July Weather17°C (62°F)53 mm (2.1 inches)72%high
August Weather17°C (63°F)95 mm (3.8 inches)65%very high
September Weather20°C (68°F)69 mm (2.7 inches)58%extreme
October Weather20°C (69°F)182 mm (7.2 inches)50%extreme
November Weather20°C (69°F)169 mm (6.6 inches)75%extreme
December Weather22°C (72°F)216 mm (8.5 inches)80%extreme

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