September weather forecast
Potiretama, Brazil

The first month of the spring, September, is a torrid month in Potiretama, Brazil, with temperature in the range of an average high of 35.6°C (96.1°F) and an average low of 22.5°C (72.5°F).

Temperature

September is marked by an average high-temperature of a sweltering 35.6°C (96.1°F), almost identical to the preceding month. Potiretama's September nights see a large temperature deviation, with temperatures resting at a low of 22.5°C (72.5°F).

Heat index

The average heat index in September is calculated to be a blistering 44°C (111.2°F). Eyes open: Heat cramps and heat exhaustion are expected. Prolonged exertion could lead to heatstroke.
Note that heat index values are valued for light wind and location in the shade. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. 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. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

With an average relative humidity of 55%, September is the least humid month.

Rainfall

The months with the least rainfall are September and October Rain falls for 1.9 days and accumulates 1mm (0.04") of rain.

Daylight

In Potiretama, Brazil, the average length of the day in September is 12h and 5min.
On the first day of September in Potiretama, sunrise is at 05:32 and sunset at 17:32. On the last day of the month, sunrise is at 05:17 and sunset at 17:27 -03.

Sunshine

September has the most sunshine of the year, with an average of 9.7h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index in Potiretama are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.