September weather forecast
Lake Harbor, FL

The first month of the autumn, September, is still a tropical month in Lake Harbor, Florida, with an average temperature varying between 74.7°F (23.7°C) and 87.4°F (30.8°C).

Temperature

With the advent of September, Lake Harbor experiences an average high-temperature of a still tropical 87.4°F (30.8°C), mirroring a close resemblance to the previous month. Lake Harbor, in September, experiences an average temperature of 74.7°F (23.7°C) at night.

Heat index

September's heat index is evaluated at a scorching 105.8°F (41°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Note that heat index values are valued for light wind and location in the shade. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

The most humid month in Lake Harbor is September, with an average relative humidity of 81%.

Rainfall

In September, in Lake Harbor, Florida, the rain falls for 19.9 days. Throughout September, 1.54" (39mm) of precipitation is accumulated. In Lake Harbor, during the entire year, the rain falls for 166.9 days and collects up to 16.06" (408mm) of precipitation.

Daylight

The average length of the day in September in Lake Harbor is 12h and 18min.
On the first day of September in Lake Harbor, sunrise is at 7:03 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:10 pm EDT.

Sunshine

The average sunshine in September is 8.8h.

UV index

The months with the highest UV index in Lake Harbor, Florida, are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.