September weather forecast
Ubajara, Brazil

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

Temperature

The transition into September marks the average high-temperature at a still hot 33.8°C (92.8°F), differing minimally from August's 32.8°C (91°F). During September, Ubajara's temperature records a considerable difference from its daily highs to an average low of 20.6°C (69.1°F).

Heat index

The heat index for September is calculated to be a scorching 41°C (105.8°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

With an average relative humidity of 59%, September is the least humid month.

Rainfall

The month with the least rainfall is September, when the rain falls for 3.4 days and typically collects 3mm (0.12") of precipitation.

Daylight

In Ubajara, the average length of the day in September is 12h and 5min.
On the first day of September, sunrise is at 05:42 and sunset at 17:44. On the last day of the month, sunrise is at 05:29 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

August through December, with an average maximum UV index of 7, are months with the highest UV index in Ubajara. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Shun overexposure. Protection from sun ravages is indispensable. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.