September weather forecast
Luís Gomes, Brazil

September, the first month of the spring in Luís Gomes, is also a hot month, with an average temperature varying between 20.9°C (69.6°F) and 33.8°C (92.8°F).

Temperature

In September, the average high-temperature registers at a still tropical 33.8°C (92.8°F), nearly identical to August's 32.8°C (91°F). A striking departure from daytime highs to an average low-temperature of 20.9°C (69.6°F) is witnessed during September.

Heat index

For September, the heat index is estimated at a very hot 38°C (100.4°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Luís Gomes, the average relative humidity in September is 50%.

Rainfall

The month with the least rainfall is September, when the rain falls for 2.7 days and typically collects 2mm (0.08") of precipitation.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:33 and sunset at 17:33. On the last day of September, sunrise is at 05:18 and sunset at 17:28 -03.

Sunshine

With an average of 9.8h of sunshine, September has the most sunshine of the year in Luís Gomes.

UV index

January through March, August through December, with an average maximum UV index of 7, are months with the highest UV index in Luís Gomes. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: An average maximum UV index of 7 in September leads to these recommendations:
Ward off overexposure. Defence against solar harm is crucial. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.