September weather forecastBarbalha, Brazil

Weather in September

The first month of the spring, September, is still a tropical month in Barbalha, Brazil, with an average temperature ranging between max 31.8°C (89.2°F) and min 19°C (66.2°F).

Temperature

The introduction of September notes a subtle temperature variation to a still tropical 31.8°C (89.2°F) from August's 30°C (86°F). In September, the temperature in Barbalha sees a substantial plunge from daytime highs to a low average of 19°C (66.2°F).

Heat index

During September, the heat index is estimated at a fiery hot 35°C (95°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In Barbalha, the average relative humidity in September is 53%.

Rainfall

In Barbalha, in September, during 3.2 rainfall days, 3mm (0.12") of precipitation is typically accumulated. Throughout the year, there are 162.1 rainfall days, and 652mm (25.67") of precipitation is accumulated.

Daylight

In Barbalha, Brazil, the average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:37 and sunset at 17:36. On the last day of September, in Barbalha, sunrise is at 05:21 and sunset at 17:32 -03.

Sunshine

The month with the most sunshine in Barbalha is September, with an average of 9.6h of sunshine.

UV index

The months with the highest UV index are September through November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the UV index of 7 transforms into the following advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.