September weather forecast
Muaná, Brazil

The first month of the spring, September, is also a hot month in Muaná, Brazil, with an average temperature fluctuating between 23.1°C (73.6°F) and 33.5°C (92.3°F).

Temperature

The shift into September records an average high-temperature of a still hot 33.5°C (92.3°F), subtly varied from August's 33.2°C (91.8°F). Muaná's nighttime temperature in September falls to an average of 23.1°C (73.6°F).

Heat index

The average heat index in September is evaluated at a blazing hot 47°C (116.6°F). Be cautious: Heat exhaustion along with heat cramps are predicted. Heatstroke is a possible consequence of continuous physical effort.
In reference to the heat index, it's for places in shade and with a slight wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The average relative humidity in September is 73%.

Rainfall

The month with the least rainfall is September, when the rain falls for 18.6 days and typically collects 37mm (1.46") of precipitation.

Daylight

In Muaná, Brazil, the average length of the day in September is 12h and 6min.
On the first day of September in Muaná, Brazil, sunrise is at 06:14 and sunset at 18:19. On the last day of the month, sunrise is at 06:02 and sunset at 18:10 -03.

Sunshine

The average sunshine in September in Muaná is 8.9h.

UV index

January through March, May through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the UV index of 7 transforms into the following advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.