September weather forecastLagoa do Sítio, Brazil

Weather in September

The first month of the spring, September, is a sweltering month in Lagoa do Sítio, Brazil, with an average temperature varying between 21.8°C (71.2°F) and 35.5°C (95.9°F).

Temperature

As September takes hold, the average high-temperature is a torrid 35.5°C (95.9°F), nearly mirroring that of the previous month. A considerable shift from the daytime highs is observed during September nights, with an average low of 21.8°C (71.2°F).

Heat index

For most parts of September, the heat index is computed to be a torrid 39°C (102.2°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

September is the least humid month, with an average relative humidity of 42%.

Rainfall

January through July, September through December are months with rainfall. September is the first month it rains. Throughout September, in the average 1.5 rainfall days, it receives 2mm (0.08") of precipitation. Throughout the year, there are 152.5 rainfall days, and 872mm (34.33") of precipitation is accumulated.

Daylight

In Lagoa do Sítio, the average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:46 and sunset at 17:45. On the last day of September, in Lagoa do Sítio, sunrise is at 05:31 and sunset at 17:40 -03.

Sunshine

August and September, with an average of 9.9h of sunshine, are months with the most sunshine.

UV index

September and October, with an average maximum UV index of 8, are months with the highest UV index. A UV Index value of 8 to 10 symbolizes a very high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, a regular UV index of 8 translates into these guidelines:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.