April weather forecast
São Sebastião do Tocantins, Brazil

April, the same as March, is a moderately hot autumn month in São Sebastião do Tocantins, Brazil, with an average temperature ranging between max 29.5°C (85.1°F) and min 21.3°C (70.3°F).

Temperature

April's arrival is characterized by an average high-temperature of a still warm 29.5°C (85.1°F), identical to that of March. São Sebastião do Tocantins encounters a steady low-temperature average of 21.3°C (70.3°F) throughout the month of April.

Heat index

The heat index value for April is evaluated at a very hot 39°C (102.2°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. 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 essentially critical for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The months with the highest humidity are February through April, with an average relative humidity of 90%.

Rainfall

In São Sebastião do Tocantins, in April, during 28.8 rainfall days, 225mm (8.86") of precipitation is typically accumulated. In São Sebastião do Tocantins, during the entire year, the rain falls for 252.6 days and collects up to 1607mm (63.27") of precipitation.

Daylight

In São Sebastião do Tocantins, the average length of the day in April is 11h and 59min.
On the first day of the month, sunrise is at 06:14 and sunset at 18:18. On the last day of April, in São Sebastião do Tocantins, sunrise is at 06:12 and sunset at 18:07 -03.

Sunshine

In April, the average sunshine in São Sebastião do Tocantins, Brazil, is 6.1h.

UV index

The months with the lowest UV index are January through June, October through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum daily UV index of 6 during April morphs into the following directions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.