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April Weather in Rio, United States

Last updated: August 27, 2025

In Rio, United States, the average temperature in April hovers around 7°C (45°F). Expect a chilly minimum of -12°C (10°F) and a warm maximum reaching up to 27°C (80°F). During this month, you'll encounter approximately 98 mm (3.9 in) of precipitation over 12 days, paired with an average humidity level of 85%. Be prepared for a varied climate that keeps you on your toes!

April Temperature in Rio

In April in Rio, the average temperature is 7°C (45°F). The maximum can reach 27°C (80°F), while the minimum can be as low as -12°C (10°F). Be prepared for a wide range of temperatures, so pack accordingly for your travels.

April Weather in Rio: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Rio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio, April typically has an average temperature of 7°C (45°F), with highs reaching up to 27°C (80°F) and lows dropping to around -12°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec212135455970747164513628
Data source: Temperature data for Rio 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.

April Precipitation in Rio

In Rio in April, the precipitation amount is 98 mm (3.9 in) over the course of 12 days.

April Precipitation Trends in Rio

The chart displays monthly precipitation patterns in Rio, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Rio, April typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec47525898127112103100981134446
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Rio

In Rio in April, humidity is 85%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

April Average Humidity in Rio

This chart illustrates the average monthly humidity levels in Rio, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Rio is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Rio

In Rio in April, 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.

Maximum UV Index Levels in Rio for April

The chart shows the monthly maximum UV Index (UVI) for Rio in April, 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 April, the maximum UV index in Rio typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Rio April 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 April Weather in Rio Compares to Other Months

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

This table compares monthly weather conditions in Rio, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)47 mm (1.9 inches)85%moderate
February Weather-6°C (21°F)52 mm (2.0 inches)85%moderate
March Weather2°C (35°F)58 mm (2.3 inches)85%moderate
April Weather7°C (45°F)98 mm (3.9 inches)85%very high
May Weather15°C (59°F)127 mm (5.0 inches)78%very high
June Weather21°C (70°F)112 mm (4.4 inches)80%very high
July Weather23°C (74°F)103 mm (4.1 inches)78%very high
August Weather22°C (71°F)100 mm (3.9 inches)76%very high
September Weather18°C (65°F)98 mm (3.8 inches)79%high
October Weather10°C (51°F)113 mm (4.5 inches)83%moderate
November Weather2°C (36°F)44 mm (1.7 inches)88%moderate
December Weather-2°C (28°F)46 mm (1.8 inches)81%low

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