September weather forecast
El Portal, FL

The first month of the autumn, September, is still a hot month in El Portal, Florida, with an average temperature ranging between max 86.4°F (30.2°C) and min 80.6°F (27°C).

Temperature

September's arrival brings an average high-temperature of a still tropical 86.4°F (30.2°C), demonstrating subtle variation from the preceding month. El Portal, during the nights of September, averages a temperature close to its daytime high, at a moderately hot 80.6°F (27°C).

Heat index

September's mean heat index is estimated at a sweltering 96.8°F (36°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In El Portal, Florida, the average relative humidity in September is 73%.

Rainfall

In El Portal, Florida, in September, it is raining for 21.3 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, there are 166.7 rainfall days, and 12.91" (328mm) 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 7:01 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:08 pm EDT.

Sunshine

In El Portal, the average sunshine in September is 9h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 7 during September translates into the following guidance:
Shield from overexposure. Defense against sun-related harm is required. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.