April weather forecast
Belém, Brazil

As the city moves into April, a minor reduction in rainfall signals the start of a less wet season. Transitioning into drier months after March, April still encounters substantial rainfall in the city, keeping up with the tropical monsoon climate. Despite the reduced amount of rainfall, the heat and humidity persist, reflecting Belém's uniformly tropical climate. With a gradual increase in daylight hours, outdoor activities become more appealing. April's weather in Belém serves as an invitation for nature enthusiasts who can marvel at and explore the city's rich biodiversity.

Temperature

With April's advent, Belém, Brazil, sees an average high-temperature of a still tropical 30.8°C (87.4°F), subtly shifted from March's 30.4°C (86.7°F). Belém in April experiences a low-temperature average of 22.6°C (72.7°F).

Heat index

The heat index value for April is estimated at a blisteringly hot 44°C (111.2°F). Caution: Heat cramps along with heat exhaustion are expected. Sustained activity could lead to heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The months with the highest humidity are February through April, with an average relative humidity of 91%.

Rainfall

In Belém, in April, during 24 rainfall days, 353mm (13.9") of precipitation is typically accumulated. Throughout the year, in Belém, there are 221 rainfall days, and 2922mm (115.04") of precipitation is accumulated.

Sea temperature

In Belém, Brazil, in April, the average water temperature is 28.3°C (82.9°F).
Note: Between 25°C (77°F) and 29°C (84.2°F), water temperature is typically considered very warm and pleasurable by everyone. Water activities at these temperatures are enjoyable for extended periods without discomfort.

Daylight

The average length of the day in April is 12h and 5min.
On the first day of April in Belém, sunrise is at 06:14 and sunset at 18:20. On the last day of the month, sunrise is at 06:09 and sunset at 18:13 -03.

Sunshine

In Belém, the average sunshine in April is 4.1h.

UV index

The months with the highest UV index are January through May, August through December, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 12 in April interprets into the following advice:
Implement every essential safety step. Individuals with fair skin might receive burns in less than 5 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. After a swim or outdoor exercise, one should liberally reapply broad-spectrum sunscreen with a sun protection factor of 30 or higher. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.