September weather forecastFrecheirinha, Brazil

Weather in September

The first month of the spring, September, is still a tropical month in Frecheirinha, Brazil, with an average temperature ranging between min 20.6°C (69.1°F) and max 33.8°C (92.8°F).

Temperature

Frecheirinha marks the onset of September with an average high-temperature of a still hot 33.8°C (92.8°F), subtly divergent from August's 32.8°C (91°F). Frecheirinha sees a large disparity in day to night temperatures in September, with the night temperature dropping to an average of 20.6°C (69.1°F).

Heat index

The heat index value during September is calculated to be a blistering 41°C (105.8°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to 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.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

September is the least humid month in Frecheirinha, with an average relative humidity of 59%.

Rainfall

September is the month with the least rainfall. Rain falls for 3.4 days and accumulates 3mm (0.12") of precipitation.

Daylight

In September, the average length of the day in Frecheirinha is 12h and 5min.
On the first day of September in Frecheirinha, sunrise is at 05:41 and sunset at 17:44. On the last day of the month, sunrise is at 05:28 and sunset at 17:37 -03.

Sunshine

September has the most sunshine of the year, with an average of 9.6h of sunshine.

UV index

The months with the highest UV index are August through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, an average UV index of 7 transforms into the following instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.