September weather forecast
Cucui, Brazil

The first month of the autumn, September, is still a hot month in Cucui, Brazil, with temperature in the range of an average low of 21.7°C (71.1°F) and an average high of 32.5°C (90.5°F).

Temperature

The warmest period tends to be September, when average temperatures fluctuate between a high of 32.5°C (90.5°F) and a low of 21.7°C (71.1°F).

Heat index

In September, the average heat index is computed to be a life-threatening hot 47°C (116.6°F). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

September is the least humid month, with an average relative humidity of 81%.

Rainfall

The month with the least rainfall is September, when the rain falls for 25.4 days and typically collects 105mm (4.13") of precipitation.

Daylight

The average length of the day in September is 12h and 7min.
On the first day of the month, sunrise is at 06:23 and sunset at 18:31. On the last day of September, sunrise is at 06:13 and sunset at 18:20 -04.

Sunshine

September has the most sunshine of the year in Cucui, with an average of 8h of sunshine.

UV index

July, September and December, with an average maximum UV index of 7, are months with the highest UV index in Cucui. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.