September weather forecast
Nokomis, FL

The first month of the autumn, September, is still a hot month in Nokomis, Florida, with an average temperature varying between 86.7°F (30.4°C) and 77.9°F (25.5°C).

Temperature

Nokomis starts September with an average high-temperature of a still hot 86.7°F (30.4°C), a minor shift from August's 87.8°F (31°C). Recording a slight decline in temperature during the nights, Nokomis's September temperatures average at a warm 77.9°F (25.5°C).

Heat index

September's average heat index is computed to be a fiery hot 100.4°F (38°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index 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.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

In Nokomis, the average relative humidity in September is 76%.

Rainfall

In Nokomis, in September, it is raining for 19.2 days, with typically 1.85" (47mm) of accumulated precipitation. In Nokomis, during the entire year, the rain falls for 150.8 days and collects up to 17.13" (435mm) of precipitation.

Ocean temperature

In Nokomis, the average seawater temperature in September is 84.7°F (29.3°C).
Note: Swimming, diving, and other water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are highly enjoyable and provide prolonged comfort without unease.

Daylight

In September, the average length of the day in Nokomis is 12h and 19min.
On the first day of the month, sunrise is at 7:09 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:16 pm EDT.

Sunshine

In September, the average sunshine in Nokomis is 9.1h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.