September weather forecast
Várzea Grande, Brazil

September, the first month of the spring in Várzea Grande, is also a sweltering month, with temperature in the range of an average high of 37.2°C (99°F) and an average low of 24°C (75.2°F).

Temperature

With average temperatures fluctuating between a high of 37.2°C (99°F) and a low of 24°C (75.2°F), September stands out as the warmest month.

Heat index

For most parts of September, the heat index is calculated to be a scorching 42°C (107.6°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
For clarity, heat index numbers account for light winds and areas under shade. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
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. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

The average relative humidity in September is 40%.

Rainfall

In Várzea Grande, during September, the rain falls for 7.1 days and regularly aggregates up to 17mm (0.67") of precipitation. In Várzea Grande, Brazil, during the entire year, the rain falls for 160.7 days and collects up to 655mm (25.79") of precipitation.

Daylight

The average length of the day in September in Várzea Grande is 12h and 1min.
On the first day of the month, sunrise is at 05:49 and sunset at 17:38. On the last day of September, sunrise is at 05:27 and sunset at 17:41 -04.

Sunshine

August and September, with an average of 9.6h of sunshine, are months with the most sunshine.

UV index

In Várzea Grande, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Enhance your sun protection with tightly woven, yet airy clothing.