September weather forecastAlcântaras, Brazil

Weather in September

September, the first month of the spring in Alcântaras, is a very hot month, with an average temperature fluctuating between 35.4°C (95.7°F) and 22.7°C (72.9°F).

Temperature

With the onset of September, the average high-temperature registers at a very hot 35.4°C (95.7°F), subtly different from August's 34.5°C (94.1°F). A marked difference from the daytime temperatures, Alcântaras's nighttime temperature falls to an average low of 22.7°C (72.9°F) in September.

Heat index

Throughout September, the heat index is computed to be a blazing hot 45°C (113°F). Heed: Expect heat cramps and heat exhaustion. Continued action may cause heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The months with the lowest humidity in Alcântaras, Brazil, are September and October, with an average relative humidity of 57%.

Rainfall

September is the month with the least rainfall in Alcântaras. Rain falls for 5.1 days and accumulates 3mm (0.12") of precipitation.

Daylight

In September, the average length of the day in Alcântaras, Brazil, is 12h and 5min.
On the first day of the month, sunrise is at 05:40 and sunset at 17:43. On the last day of September, sunrise is at 05:27 and sunset at 17:36 -03.

Sunshine

In September, the average sunshine in Alcântaras is 9.1h.

UV index

The months with the highest UV index are July through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.