September weather forecast
Pires Ferreira, Brazil

The first month of the spring, September, is also a hot month in Pires Ferreira, Brazil, with an average temperature fluctuating between 21.5°C (70.7°F) and 34.7°C (94.5°F).

Temperature

Pires Ferreira's shift into September is marked by a subtle change to a still tropical 34.7°C (94.5°F) from August's 33.9°C (93°F) in temperature. Pires Ferreira sees a major change from daytime highs, with the nighttime temperature dipping to an agreeable 21.5°C (70.7°F) on average during September.

Heat index

During September, the heat index is estimated at an extremely hot 41°C (105.8°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. 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 essentially critical for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

September is the least humid month in Pires Ferreira, with an average relative humidity of 52%.

Rainfall

September is the month with the least rainfall. Rain falls for 3.9 days and accumulates 3mm (0.12") of precipitation.

Daylight

The average length of the day in September is 12h and 5min.
On the first day of the month, sunrise is at 05:41 and sunset at 17:43. On the last day of September, in Pires Ferreira, sunrise is at 05:28 and sunset at 17:36 -03.

Sunshine

August and September, with an average of 9.4h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are July 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 unsafe exposure to UV radiation for average individuals.
Note: In September, an average UV index of 7 transforms into the following instructions:
Deflect overexposure. Sun protection is a necessity. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.