September weather forecast
Urbano Santos, Brazil

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

Temperature

Urbano Santos's weather in September indicates an average high-temperature of a sweltering 35.3°C (95.5°F), nearly consistent with the 33.5°C (92.3°F) of August. Urbano Santos's average low-temperature of 21.9°C (71.4°F) in September reflects a significant disparity from the daytime highs.

Heat index

During September, the heat index is evaluated at a burning hot 48°C (118.4°F). Warning: Heat cramps and heat exhaustion are anticipated. Heatstroke is a risk with ongoing activity.
Observations indicate that the heat index values are for shady locations with light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. 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 response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

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

Rainfall

September is the month with the least rainfall. Rain falls for 7.9 days and accumulates 10mm (0.39") of precipitation.

Daylight

In Urbano Santos, Brazil, the average length of the day in September is 12h and 5min.
On the first day of September in Urbano Santos, Brazil, sunrise is at 05:51 and sunset at 17:54. On the last day of the month, sunrise is at 05:39 and sunset at 17:47 -03.

Sunshine

September has the most sunshine of the year in Urbano Santos, 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 Urbano Santos. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.