September weather forecast
Firminópolis, Brazil

The first month of the spring, September, is also a hot month in Firminópolis, Brazil, with temperature in the range of an average low of 21°C (69.8°F) and an average high of 34.1°C (93.4°F).

Temperature

September is the warmest month, exhibiting average temperatures of 34.1°C (93.4°F) at the peak and 21°C (69.8°F) at the base.

Heat index

During September, the heat index is computed to be a fiery hot 36°C (96.8°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in September in Firminópolis is 40%.

Rainfall

In Firminópolis, in September, during 6.1 rainfall days, 16mm (0.63") of precipitation is typically accumulated. Throughout the year, there are 205.3 rainfall days, and 1139mm (44.84") of precipitation is accumulated.

Daylight

The average length of the day in September in Firminópolis, Brazil, is 12h and 1min.
On the first day of the month, sunrise is at 06:26 and sunset at 18:15. On the last day of September, in Firminópolis, sunrise is at 06:03 and sunset at 18:18 -03.

Sunshine

In September, the average sunshine in Firminópolis is 9.7h.

UV index

August and September, with an average maximum UV index of 7, are months with the highest UV index in Firminópolis. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 7 suggests this advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.