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April Weather in Rialma, Brazil

Last updated: August 22, 2025

In April, the average temperature in Rialma, Brazil is a pleasant 25°C (77°F). However, be prepared for a range, as temperatures can drop to a minimum of 15°C (59°F) and soar to a maximum of 33°C (92°F). Expect 66 mm (2.6 in) of precipitation over about 11 days, contributing to an average humidity of 82%.

April Temperature in Rialma

In April in Rialma, the average temperature is 25°C (77°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 15°C (59°F). This pleasant range of temperatures makes Rialma an ideal destination for travelers looking to enjoy mild weather and a variety of outdoor activities.

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

The chart illustrates April temperature patterns in Rialma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rialma, April typically has an average temperature of 25°C (77°F), with highs reaching up to 33°C (92°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec777676767473727781807776
Data source: Temperature data for Rialma 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 Rialma

In Rialma in April, the precipitation amount is 66 mm (2.6 in) spread over 11 days.

April Precipitation Trends in Rialma

The chart displays monthly precipitation patterns in Rialma, 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 Rialma, April typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec130184134669001488166234
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Rialma

In Rialma in April, humidity is 82%. With an average temperature of 25°C (77°F), this humidity feels like a warm, oppressive blanket enveloping you as you explore, making every step feel more laborious and prompting the need for frequent hydration breaks.

April Average Humidity in Rialma

This chart illustrates the average monthly humidity levels in Rialma, 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 Rialma is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%90%90%82%65%59%53%44%34%26%50%70%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Rialma

In Rialma in April, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Rialma.

Maximum UV Index Levels in Rialma for April

The chart shows the monthly maximum UV Index (UVI) for Rialma 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 Rialma typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16161413119101213151516
Data source: Rialma 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 Rialma Compares to Other Months

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

This table compares monthly weather conditions in Rialma, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)130 mm (5.1 inches)86%extreme
February Weather24°C (76°F)184 mm (7.2 inches)89%extreme
March Weather25°C (77°F)133 mm (5.3 inches)90%extreme
April Weather25°C (77°F)66 mm (2.6 inches)82%extreme
May Weather24°C (75°F)9 mm (0.3 inches)65%extreme
June Weather23°C (73°F)0 mm (0.0 inches)59%very high
July Weather22°C (72°F)0 mm (0.0 inches)53%very high
August Weather25°C (77°F)0 mm (0.0 inches)44%extreme
September Weather27°C (81°F)4 mm (0.1 inches)34%extreme
October Weather27°C (80°F)88 mm (3.5 inches)26%extreme
November Weather25°C (77°F)166 mm (6.5 inches)50%extreme
December Weather25°C (77°F)234 mm (9.2 inches)70%extreme

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