September weather forecast
Acopiara, Brazil

The first month of the spring, September, is also a hot month in Acopiara, Brazil, with an average temperature fluctuating between 21.4°C (70.5°F) and 34°C (93.2°F).

Temperature

The advent of September signifies a minor shift to an average high-temperature of a still tropical 34°C (93.2°F), aligning closely with August. September nights are characterized by a significant departure from the daytime highs, dropping to an average temperature of 21.4°C (70.5°F).

Heat index

September's average heat index is computed to be a sweltering 38°C (100.4°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

September and October, with an average relative humidity of 50%, are the least humid months in Acopiara.

Rainfall

September is the month with the least rainfall in Acopiara. Rain falls for 6.5 days and accumulates 7mm (0.28") of precipitation.

Daylight

The average length of the day in September in Acopiara is 12h and 5min.
On the first day of September, sunrise is at 05:37 and sunset at 17:37. On the last day of the month, sunrise is at 05:22 and sunset at 17:32 -03.

Sunshine

With an average of 9.4h of sunshine, September has the most sunshine of the year in Acopiara, Brazil.

UV index

The months with the highest UV index are August through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.