April weather forecast
Barreirinha, Brazil

April, like March, in Barreirinha, Brazil, is another warm autumn month, with an average temperature fluctuating between 22.8°C (73°F) and 29.9°C (85.8°F).

Temperature

With an average high-temperature of 29.9°C (85.8°F) and an average low-temperature of 22.8°C (73°F), April is the coldest month.

Heat index

The heat index value during April is estimated at an extremely hot 40°C (104°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

With an average relative humidity of 89%, April is the most humid month.

Rainfall

In Barreirinha, during April, the rain falls for 21.6 days and regularly aggregates up to 91mm (3.58") of precipitation. Throughout the year, in Barreirinha, there are 201.8 rainfall days, and 607mm (23.9") of precipitation is accumulated.

Daylight

In April, the average length of the day in Barreirinha is 12h and 3min.
On the first day of the month, sunrise is at 05:49 and sunset at 17:54. On the last day of April, sunrise is at 05:44 and sunset at 17:45 -04.

Sunshine

April has the least sunshine of the year in Barreirinha, with an average of 6.1h of sunshine.

UV index

In Barreirinha, Brazil, the average daily maximum UV index in April is 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 7 in April translates into these instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Employ a wide-brim hat for potent defense against up to 50% of UV rays.