September weather forecast
Coronel João Pessoa, Brazil

The first month of the spring, September, is a torrid month in Coronel João Pessoa, Brazil, with an average temperature fluctuating between 35.1°C (95.2°F) and 22.3°C (72.1°F).

Temperature

As Coronel João Pessoa transitions from August to September, the average high-temperatures adjust to a sweltering 35.1°C (95.2°F), nearly the same as the previous 33.7°C (92.7°F). Coronel João Pessoa reports a sharp reduction in temperature during September, averaging at a pleasant 22.3°C (72.1°F) at night.

Heat index

Throughout September, the heat index is estimated at a sweltering 39°C (102.2°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Heat index details are generally centered around shaded locations and a mild breeze. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

With an average relative humidity of 46%, September is the least humid month in Coronel João Pessoa.

Rainfall

September is the month with the least rainfall in Coronel João Pessoa, Brazil. Rain falls for 3.9 days and accumulates 3mm (0.12") of precipitation.

Daylight

In September, the average length of the day is 12h and 5min.
On the first day of the month, sunrise is at 05:33 and sunset at 17:33. On the last day of September, in Coronel João Pessoa, sunrise is at 05:18 and sunset at 17:28 -03.

Sunshine

August and September, with an average of 9.7h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are January, March, April, July through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.