April weather forecast
Santarém, Brazil

April, like March, in Santarém, Brazil, is a moderately hot autumn month, with an average temperature fluctuating between 29.3°C (84.7°F) and 24°C (75.2°F).

Temperature

Santarém's April weather, marked by an average high temperature of 29.3°C (84.7°F) and an average low temperature of 24°C (75.2°F), is the coldest in the year.

Heat index

April's mean heat index is evaluated at a torrid 37°C (98.6°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

April is the most humid month, with an average relative humidity of 86%.

Rainfall

The month with the most rainfall is April, when the rain falls for 28.7 days and typically aggregates up to 372mm (14.65") of precipitation.

Daylight

The average length of the day in April is 12h and 4min.
On the first day of April in Santarém, sunrise is at 06:39 and sunset at 18:45. On the last day of the month, sunrise is at 06:35 and sunset at 18:36 -03.

Sunshine

In Santarém, Brazil, the average sunshine in April is 6.9h.

UV index

The months with the highest UV index are January, April through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 7 in April, converts into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.