June weather forecast
São Mateus do Maranhão, Brazil

June, the first month of the winter in São Mateus do Maranhão, is also a hot month, with an average temperature varying between 30.3°C (86.5°F) and 21.2°C (70.2°F).

Temperature

With June's advent, São Mateus do Maranhão, Brazil, sees an average high-temperature of a still tropical 30.3°C (86.5°F), subtly shifted from May's 30.2°C (86.4°F). São Mateus do Maranhão in June anticipates an average nighttime temperature of 21.2°C (70.2°F).

Heat index

June's mean heat index is appraised at an extremely hot 40°C (104°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

The average relative humidity in June is 83%.

Rainfall

In São Mateus do Maranhão, during June, the rain falls for 19.2 days and regularly aggregates up to 44mm (1.73") of precipitation. Throughout the year, in São Mateus do Maranhão, there are 247.2 rainfall days, and 1281mm (50.43") of precipitation is accumulated.

Daylight

The month with the shortest days in São Mateus do Maranhão is June, with an average of 11h and 54min of daylight.
On the first day of the month, sunrise is at 05:58 and sunset at 17:52. On the last day of June, sunrise is at 06:04 and sunset at 17:58 -03.

Sunshine

In June, the average sunshine is 7h.

UV index

The months with the lowest UV index are February through June and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In June, the UV index of 6 transforms into the following advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.