September weather forecast
Ipu, Brazil

The first month of the spring, September, is still a hot month in Ipu, Brazil, with temperature in the range of an average low of 21.5°C (70.7°F) and an average high of 34.7°C (94.5°F).

Temperature

The advent of September observes an average high-temperature of a still hot 34.7°C (94.5°F), nearly identical to August's 33.9°C (93°F). In Ipu, the nighttime temperature registers a significant drop from daytime peaks to an average of 21.5°C (70.7°F) in September.

Heat index

The average heat index in September is estimated at a blistering 41°C (105.8°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The least humid month is September, with an average relative humidity of 52%.

Rainfall

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

Daylight

In Ipu, the average length of the day in September is 12h and 5min.
On the first day of September in Ipu, Brazil, sunrise is at 05:41 and sunset at 17:43. On the last day of the month, 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 in Ipu.

UV index

The months with the highest UV index in Ipu are July through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.