September weather forecast
Plantation Island, FL

The first month of the autumn, September, is still a hot month in Plantation Island, Florida, with an average temperature varying between 78.4°F (25.8°C) and 87.1°F (30.6°C).

Temperature

With the onset of September, the average high-temperature stands at a still hot 87.1°F (30.6°C), closely aligned with August's 88.3°F (31.3°C). Plantation Island registers a small shift from peak daytime temperatures, with a consistent average low-temperature of 78.4°F (25.8°C) during September.

Heat index

The heat index value during September is computed to be a torrid 100.4°F (38°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In Plantation Island, Florida, the average relative humidity in September is 75%.

Rainfall

In Plantation Island, during September, the rain falls for 21.5 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, in Plantation Island, there are 162.1 rainfall days, and 21.69" (551mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 18min.
On the first day of the month, sunrise is at 7:06 am and sunset at 7:44 pm. On the last day of September, in Plantation Island, sunrise is at 7:17 am and sunset at 7:12 pm EDT.

Sunshine

The average sunshine in September is 9.2h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 7 in September translates into these instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.