April weather forecast
Rio Uaçá, Brazil

April, like March, in Rio Uaçá, Brazil, is another warm spring month, with an average temperature varying between 28.7°C (83.7°F) and 22.5°C (72.5°F).

Temperature

Upon the onset of April, Rio Uaçá witnesses an average high-temperature of a still moderately hot 28.7°C (83.7°F), showing a close resemblance to the prior month. Throughout April, Rio Uaçá witnesses a nighttime temperature average of 22.5°C (72.5°F).

Heat index

The heat index value for April is calculated to be a sweltering 36°C (96.8°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Note that heat index values are valued for light wind and location in the shade. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Rio Uaçá, the average relative humidity in April is 90%.

Rainfall

In Rio Uaçá, in April, during 28.7 rainfall days, 168mm (6.61") of precipitation is typically accumulated. In Rio Uaçá, during the entire year, the rain falls for 280.4 days and collects up to 1281mm (50.43") of precipitation.

Daylight

The average length of the day in April is 12h and 12min.
On the first day of the month, sunrise is at 06:24 and sunset at 18:33. On the last day of April, sunrise is at 06:15 and sunset at 18:30 -03.

Sunshine

The average sunshine in April is 4.9h.

UV index

January through June and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 6 in April translates into this advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.