September weather forecast
Venice, FL

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

Temperature

September's arrival brings an average high-temperature of a still tropical 86.7°F (30.4°C), slightly deviating from August's 87.8°F (31°C). Venice notes a consistent average low-temperature of 77.9°F (25.5°C) during September nights.

Heat index

In September, the heat index is evaluated at a very hot 100.4°F (38°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

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

Rainfall

In September, in Venice, the rain falls for 19.2 days. Throughout September, 1.85" (47mm) of precipitation is accumulated. Throughout the year, in Venice, there are 150.8 rainfall days, and 17.13" (435mm) of precipitation is accumulated.

Ocean temperature

In Venice, the average seawater temperature in September is 84.7°F (29.3°C).
Note: For swimming, diving, or other water activities, the temperature range of 77°F (25°C) to 84.2°F (29°C) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

In Venice, the average length of the day in September 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, in Venice, sunrise is at 7:22 am and sunset at 7:16 pm EDT.

Sunshine

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

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Stay sun-safe with clothing that is both closely woven and worn loosely. Note! Reflective surfaces like sand and water heighten the UV radiation levels.