September weather forecastAlva, FL

Weather in September

The first month of the autumn, September, is still a tropical month in Alva, Florida, with an average temperature ranging between min 74.3°F (23.5°C) and max 88.3°F (31.3°C).

Temperature

Alva records an average high-temperature of a still tropical 88.3°F (31.3°C) as September arrives, nearly mirroring the previous month's climate. The average temperature drops to a moderately hot 74.3°F (23.5°C) during the night in the month of September.

Heat index

The heat index for September is computed to be a scorching 107.6°F (42°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

With an average relative humidity of 80%, September is the most humid month in Alva.

Rainfall

In Alva, in September, during 19.7 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. In Alva, during the entire year, the rain falls for 161.1 days and collects up to 17.6" (447mm) of precipitation.

Daylight

The average length of the day in September is 12h and 18min.
On the first day of the month, sunrise is at 7:06 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:13 pm EDT.

Sunshine

The average sunshine in September is 8.8h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high UV index of 7 in September translates into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.