September weather forecast
Ruskin, FL

The first month of the autumn, September, is still a tropical month in Ruskin, Florida, with an average temperature fluctuating between 74.8°F (23.8°C) and 88.3°F (31.3°C).

Temperature

Ruskin experiences a transition to a still hot 88.3°F (31.3°C) in average high-temperatures with the arrival of September, not greatly differing from August's 90°F (32.2°C). In Ruskin, the September nights cool down to an average low of 74.8°F (23.8°C).

Heat index

September's heat index is evaluated at a blisteringly hot 105.8°F (41°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool 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. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

With an average relative humidity of 77%, September is the most humid month.

Rainfall

In September, the rain falls for 20.1 days. Throughout September, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 159.5 rainfall days, and 15.16" (385mm) of precipitation is accumulated.

Ocean temperature

In Ruskin, the average seawater temperature in September is 84.4°F (29.1°C).
Note: In any water activity, temperatures between 77°F (25°C) and 84.2°F (29°C) are viewed as magnificent and exceptionally pleasant for prolonged enjoyment.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 7:08 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:16 pm EDT.

Sunshine

In September, the average sunshine is 9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Shun overexposure. Protection from sun ravages is indispensable. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Attention! UV strength is notably upped by the reflection of sand and water.