September weather forecast
Bernardo Sayão, Brazil

September, the first month of the spring in Bernardo Sayão, is also a fiery hot month, with temperature in the range of an average high of 37.2°C (99°F) and an average low of 23.8°C (74.8°F).

Temperature

September is the month that records the highest temperatures, with averages ranging from a high of 37.2°C (99°F) to a low of 23.8°C (74.8°F).

Heat index

The average heat index in September is computed to be an extremely hot 42°C (107.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

August and September, with an average relative humidity of 40%, are the least humid months.

Rainfall

In Bernardo Sayão, during September, the rain falls for 4.6 days and regularly aggregates up to 8mm (0.31") of precipitation. In Bernardo Sayão, Brazil, during the entire year, the rain falls for 213.3 days and collects up to 1154mm (45.43") of precipitation.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of the month, sunrise is at 06:16 and sunset at 18:14. On the last day of September, sunrise is at 06:00 and sunset at 18:10 -03.

Sunshine

In Bernardo Sayão, the average sunshine in September is 9.6h.

UV index

The months with the highest UV index in Bernardo Sayão are May through September and November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.