September weather forecast
Porto da Folha, Brazil

The first month of the spring, September, is still a warm month in Porto da Folha, Brazil, with an average temperature varying between 29.9°C (85.8°F) and 18.7°C (65.7°F).

Temperature

As Porto da Folha steps into September, the average high-temperature holds at a still warm 29.9°C (85.8°F), hinting at a minor fluctuation from the prior month. During the nights in September, Porto da Folha experiences a consistent average temperature of 18.7°C (65.7°F).

Heat index

The heat index value during September is computed to be a very hot 35°C (95°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Porto da Folha, the average relative humidity in September is 72%.

Rainfall

September is the month with the least rainfall. Rain falls for 8.2 days and accumulates 7mm (0.28") of precipitation.

Daylight

In Porto da Folha, the average length of the day in September is 12h and 3min.
On the first day of the month, sunrise is at 05:31 and sunset at 17:26. On the last day of September, in Porto da Folha, sunrise is at 05:13 and sunset at 17:24 -03.

Sunshine

In September, the average sunshine in Porto da Folha is 7.6h.

UV index

The months with the lowest UV index in Porto da Folha are April through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.