April weather forecast
Alcântara, Brazil

April, like March, in Alcântara, Brazil, is a moderately hot autumn month, with an average temperature varying between 24.8°C (76.6°F) and 29.2°C (84.6°F).

Temperature

Alcântara ushers in April with an average high temperature of a still warm 29.2°C (84.6°F), nearly identical to March's temperature. Alcântara's nights throughout April are marked by an average low temperature of 24.8°C (76.6°F), a minor drop from the day's high.

Heat index

In April, the average heat index is estimated at a sweltering 36°C (96.8°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The months with the highest humidity in Alcântara are April and May, with an average relative humidity of 84%.

Rainfall

April is the month with the most rainfall in Alcântara. Rain falls for 29.8 days and accumulates 438mm (17.24") of precipitation.

Sea temperature

In Alcântara, the average seawater temperature in April is 28.7°C (83.7°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.

Daylight

In Alcântara, Brazil, the average length of the day in April is 12h and 4min.
On the first day of April, sunrise is at 05:58 and sunset at 18:03. On the last day of the month, sunrise is at 05:53 and sunset at 17:55 -03.

Sunshine

In April, the average sunshine in Alcântara is 7.7h.

UV index

The months with the highest UV index are April, June through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum high daily UV index of 7 during April translates into the following directions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take note! The UV strength of the Sun elevates when reflected off water and sand.