April weather forecast
Santa Isabel do Rio Negro, Brazil

April, the same as March, is another warm autumn month in Santa Isabel do Rio Negro, Brazil, with an average temperature varying between 29.8°C (85.6°F) and 22.6°C (72.7°F).

Temperature

The advent of April brings an average high-temperature of a moderately hot 29.8°C (85.6°F), almost identical to the preceding month. April in Santa Isabel do Rio Negro, Brazil, witnesses an average low-temperature hovering around an agreeable 22.6°C (72.7°F).

Heat index

The heat index in April is calculated to be a blisteringly hot 40°C (104°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In April, the average relative humidity in Santa Isabel do Rio Negro is 90%.

Rainfall

In Santa Isabel do Rio Negro, during April, the rain falls for 28.2 days and regularly aggregates up to 237mm (9.33") of precipitation. In Santa Isabel do Rio Negro, during the entire year, the rain falls for 308 days and collects up to 1836mm (72.28") of precipitation.

Daylight

The average length of the day in April is 12h and 7min.
On the first day of April in Santa Isabel do Rio Negro, Brazil, sunrise is at 06:20 and sunset at 18:26. On the last day of the month, sunrise is at 06:14 and sunset at 18:20 -04.

Sunshine

The average sunshine in April is 5.2h.

UV index

The months with the lowest UV index are January through June, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 6 during April translates into the following directions:
Resist extreme sun exposure. Guarding against solar damage is essential. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.