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May Weather in Rio Grande, Brazil

Last updated: August 22, 2025

In May, the average temperature in Rio Grande, Brazil hovers around 18°C (64°F). Visitors can expect a minimum of 9°C (48°F) and a pleasant maximum of 25°C (77°F). With an average humidity of 82% and 97 mm (3.8 in) of precipitation spread over 10 days, be prepared for a mix of cozy and refreshing weather!

May Temperature in Rio Grande

In May in Rio Grande, the average temperature is 18°C (64°F), with maximums reaching up to 25°C (77°F) and minimums dropping as low as 9°C (48°F). This pleasant climate makes Rio Grande an ideal destination for travelers seeking comfortable weather and outdoor activities.

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

The chart illustrates May temperature patterns in Rio Grande, 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, May typically has an average temperature of 18°C (64°F), with highs reaching up to 25°C (77°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec757573706460575761646871
Data source: Temperature data for Rio Grande 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

In Rio Grande in May, the total precipitation amount is 97 mm (3.8 in) over a span of 10 days.

May Precipitation Trends in Rio Grande

The chart displays monthly precipitation patterns in Rio Grande, 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, May typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec8575876597991111001441317877
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Rio Grande

In Rio Grande in May humidity is 82%. With an average temperature of 18°C (64°F), this humidity feels like a warm, muggy embrace that can make exploring the area feel stifling, leaving travelers drenched in sweat and longing for respite in the shade.

May Average Humidity in Rio Grande

This chart illustrates the average monthly humidity levels in Rio Grande, 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 is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%81%81%81%82%81%78%80%84%84%82%82%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Rio Grande

In Rio Grande in May, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Rio Grande.

Maximum UV Index Levels in Rio Grande for May

The chart shows the monthly maximum UV Index (UVI) for Rio Grande 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 typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312854469111314
Data source: Rio Grande 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 Compares to Other Months

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

This table compares monthly weather conditions in Rio Grande, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)85 mm (3.3 inches)79%extreme
February Weather24°C (75°F)75 mm (2.9 inches)81%extreme
March Weather23°C (73°F)87 mm (3.4 inches)81%extreme
April Weather21°C (70°F)65 mm (2.6 inches)80%very high
May Weather18°C (64°F)97 mm (3.8 inches)82%moderate
June Weather15°C (60°F)99 mm (3.9 inches)81%moderate
July Weather14°C (57°F)111 mm (4.4 inches)78%moderate
August Weather14°C (58°F)100 mm (3.9 inches)80%high
September Weather16°C (61°F)144 mm (5.7 inches)84%very high
October Weather18°C (65°F)131 mm (5.2 inches)84%extreme
November Weather20°C (68°F)78 mm (3.1 inches)82%extreme
December Weather22°C (71°F)77 mm (3.0 inches)82%extreme

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