September weather forecast
Cassilândia, Brazil

The first month of the spring, September, is still a hot month in Cassilândia, Brazil, with an average temperature fluctuating between 33.5°C (92.3°F) and 20.4°C (68.7°F).

Temperature

Cassilândia experiences its highest average temperatures in September, reaching a peak of 33.5°C (92.3°F) and a minimum of 20.4°C (68.7°F).

Heat index

During September, the heat index is calculated to be a very hot 36°C (96.8°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In Cassilândia, the average relative humidity in September is 47%.

Rainfall

In Cassilândia, in September, during 8.4 rainfall days, 41mm (1.61") of precipitation is typically accumulated. Throughout the year, in Cassilândia, there are 200.6 rainfall days, and 1186mm (46.69") of precipitation is accumulated.

Daylight

In September, the average length of the day in Cassilândia is 12h and 0min.
On the first day of the month, sunrise is at 05:34 and sunset at 17:19. On the last day of September, sunrise is at 05:08 and sunset at 17:24 -04.

Sunshine

In Cassilândia, the average sunshine in September is 9.5h.

UV index

The average daily maximum UV index in September in Cassilândia is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.