September weather forecast
Itapetim, Brazil

The first month of the spring, September, is also a hot month in Itapetim, Brazil, with temperature in the range of an average low of 20.3°C (68.5°F) and an average high of 32.8°C (91°F).

Temperature

The commencement of September brings an average high-temperature of a still hot 32.8°C (91°F), marking an inconsequential divergence from August. Itapetim experiences a dramatic descent in temperature during September, with the average nighttime reading settling at an agreeable 20.3°C (68.5°F).

Heat index

September's average heat index is calculated to be a sweltering 38°C (100.4°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The average relative humidity in September is 56%.

Rainfall

The months with the least rainfall are August and September Rain falls for 1.2 days and accumulates 1mm (0.04") of rain.

Daylight

In September, the average length of the day in Itapetim is 12h and 4min.
On the first day of the month, sunrise is at 05:29 and sunset at 17:27. On the last day of September, in Itapetim, sunrise is at 05:13 and sunset at 17:23 -03.

Sunshine

With an average of 9.9h of sunshine, September has the most sunshine of the year.

UV index

January through March, August through December, with an average maximum UV index of 7, are months with the highest UV index in Itapetim. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 7 in September translates into these instructions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.