September weather forecast
Chapadinha, Brazil

The first month of the spring, September, is a torrid month in Chapadinha, Brazil, with an average temperature ranging between max 35.3°C (95.5°F) and min 21.9°C (71.4°F).

Temperature

The shift into September finds Chapadinha at an average high-temperature of a fiery hot 35.3°C (95.5°F), closely comparable to August's conditions. The nighttime temperature in Chapadinha shows a significant divergence from the daytime highs, averaging at a pleasant 21.9°C (71.4°F) in September.

Heat index

Throughout September, the heat index is estimated at a burning hot 48°C (118.4°F). Take note: Heat exhaustion and heat cramps are expected. Heatstroke can occur with prolonged effort.
In the scope of the heat index, its values resonate with shade and light wind conditions. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

September and October, with an average relative humidity of 64%, are the least humid months.

Rainfall

The month with the least rainfall is September, when the rain falls for 7.9 days and typically collects 10mm (0.39") of precipitation.

Daylight

In September, the average length of the day in Chapadinha is 12h and 5min.
On the first day of the month, sunrise is at 05:51 and sunset at 17:54. On the last day of September, sunrise is at 05:38 and sunset at 17:47 -03.

Sunshine

The month with the most sunshine is September, with an average of 9.1h of sunshine.

UV index

July through November, with an average maximum UV index of 7, are months with the highest UV index in Chapadinha. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.