September weather forecastPacujá, Brazil

Weather in September

The first month of the spring, September, is also a hot month in Pacujá, Brazil, with an average temperature ranging between min 20.7°C (69.3°F) and max 33.9°C (93°F).

Temperature

With the onset of September, Pacujá's average high-temperature clocks in at a still tropical 33.9°C (93°F), showing a minor fluctuation from the previous month. Despite the high peak temperatures, Pacujá witnesses an average nighttime cooling to an agreeable 20.7°C (69.3°F) in September.

Heat index

During September, the heat index is calculated to be a scorching 40°C (104°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

With an average relative humidity of 56%, September is the least humid month.

Rainfall

September is the month with the least rainfall. Rain falls for 4.4 days and accumulates 4mm (0.16") of precipitation.

Daylight

The average length of the day in September in Pacujá, Brazil, is 12h and 5min.
On the first day of the month, sunrise is at 05:41 and sunset at 17:43. On the last day of September, in Pacujá, sunrise is at 05:28 and sunset at 17:36 -03.

Sunshine

The month with the most sunshine in Pacujá is September, with an average of 9.5h of sunshine.

UV index

July through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Guard against overexposure. Protection from sun-induced harm is essential. 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.