September weather forecast
Riviera Lagoons, FL

The first month of the autumn, September, is also a hot month in Riviera Lagoons, Florida, with an average temperature ranging between min 75°F (23.9°C) and max 88.7°F (31.5°C).

Temperature

With the arrival of September, Riviera Lagoons's average high-temperature registers at a still tropical 88.7°F (31.5°C), indicating a subtle variation from the previous month. In September, the recorded average low-temperature is a moderately hot 75°F (23.9°C).

Heat index

The heat index value during September is appraised at a blisteringly hot 107.6°F (42°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The most humid month is September, with an average relative humidity of 78%.

Rainfall

In Riviera Lagoons, in September, it is raining for 22.6 days, with typically 3.5" (89mm) of accumulated precipitation. In Riviera Lagoons, Florida, during the entire year, the rain falls for 181.8 days and collects up to 29.37" (746mm) of precipitation.

Daylight

In Riviera Lagoons, the average length of the day in September is 12h and 18min.
On the first day of the month, sunrise is at 7:07 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:15 pm EDT.

Sunshine

In Riviera Lagoons, the average sunshine in September is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 7 in September transforms into the following instructions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.