September weather forecast
Lely Resort, FL

The first month of the autumn, September, is also a hot month in Lely Resort, Florida, with an average temperature fluctuating between 87.1°F (30.6°C) and 78.4°F (25.8°C).

Temperature

September's arrival shows an average high-temperature of a still tropical 87.1°F (30.6°C), hardly different from the previous month. Throughout September, a modest shift from daytime highs is anticipated, with an average low-temperature of 78.4°F (25.8°C).

Heat index

In September, the heat index is evaluated at a fiery hot 100.4°F (38°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In Lely Resort, the average relative humidity in September is 75%.

Rainfall

In September, in Lely Resort, the rain falls for 21.5 days. Throughout September, 2.4" (61mm) of precipitation is accumulated. In Lely Resort, during the entire year, the rain falls for 162.1 days and collects up to 21.69" (551mm) of precipitation.

Daylight

In September, the average length of the day in Lely Resort is 12h and 18min.
On the first day of September in Lely Resort, sunrise is at 7:07 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:14 pm EDT.

Sunshine

The average sunshine in September in Lely Resort, Florida, is 9.2h.

UV index

The months with the highest UV index in Lely Resort are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: In September, the UV index of 7 transforms into the following advice:
Shield from overexposure. Defense against sun-related harm is required. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.