September weather forecast
Anastácio, Brazil

The first month of the spring, September, is also a hot month in Anastácio, Brazil, with temperature in the range of an average high of 34°C (93.2°F) and an average low of 20.2°C (68.4°F).

Temperature

In September, Anastácio experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 31.4°C (88.5°F) in August to a still hot 34°C (93.2°F). Anastácio anticipates a considerable drop in temperature at night in September, with an average low of 20.2°C (68.4°F).

Heat index

The heat index for September is computed to be a fiery hot 39°C (102.2°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. 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 'feels like' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

September is the least humid month, with an average relative humidity of 51%.

Rainfall

In Anastácio, Brazil, in September, during 8.4 rainfall days, 33mm (1.3") of precipitation is typically accumulated. Throughout the year, there are 182.2 rainfall days, and 939mm (36.97") of precipitation is accumulated.

Daylight

In September, the average length of the day in Anastácio is 11h and 59min.
On the first day of the month, sunrise is at 05:51 and sunset at 17:34. On the last day of September, sunrise is at 05:24 and sunset at 17:41 -04.

Sunshine

In Anastácio, the average sunshine in September is 9.3h.

UV index

March, August through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.