September weather forecast
Mansidão, Brazil

The first month of the spring, September, is still a hot month in Mansidão, Brazil, with an average temperature fluctuating between 34.9°C (94.8°F) and 20.5°C (68.9°F).

Temperature

During September, Mansidão records an average high-temperature of a still tropical 34.9°C (94.8°F), marking a slight divergence from August's 32.9°C (91.2°F). In September, the recorded average low-temperature, of 20.5°C (68.9°F), exhibits a significant fall from the daytime highs.

Heat index

The heat index value during September is evaluated at a fiery hot 37°C (98.6°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', determines the feeling of heat when you account for the relative humidity. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

September is the least humid month in Mansidão, with an average relative humidity of 40%.

Rainfall

January through July, September through December are months with rainfall. September is the first month it rains in Mansidão. Throughout September, in the average 1.3 rainfall days, it receives 5mm (0.2") of precipitation. Throughout the year, in Mansidão, Brazil, there are 134.3 rainfall days, and 578mm (22.76") of precipitation is accumulated.

Daylight

In September, the average length of the day in Mansidão is 12h and 3min.
On the first day of the month, sunrise is at 05:58 and sunset at 17:53. On the last day of September, sunrise is at 05:40 and sunset at 17:51 -03.

Sunshine

The average sunshine in September in Mansidão is 9.6h.

UV index

August through October, with an average maximum UV index of 7, are months with the highest UV index in Mansidão. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.