September weather forecast
Sarasota, FL

Sarasota's September weather rings in slight changes as summer slowly starts to recede, paving the way for milder autumn. Daylight hours progressively shorten to 12.3 hours a day, indicating the near arrival of shorter autumn days. Despite declining temperatures, September remains predominantly warm, reminding of the recently receded summer. The rainfall received in September eases down to 4.61" (117mm), dispersed over 23.5 days, which shows a decline from the record August rainfall. The weather in Sarasota during September remains pleasantly mild, painting a perfect picture with a balance of warm temperatures and moderate rainfall.

Temperature

The transition from August to September brings an average high-temperature of a still hot 86.9°F (30.5°C), barely different from August's 88.5°F (31.4°C). Throughout September, the nighttime temperature averages to a moderately hot 77.4°F (25.2°C).

Heat index

September's heat index is calculated to be a fiery hot 100.4°F (38°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Sarasota, the average relative humidity in September is 75%.

Rainfall

In Sarasota, in September, it is raining for 23.5 days, with typically 4.61" (117mm) of accumulated precipitation. Throughout the year, in Sarasota, Florida, there are 183.1 rainfall days, and 34.92" (887mm) of precipitation is accumulated.

Ocean temperature

In Sarasota, the average seawater temperature in September is 84.7°F (29.3°C).
Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are ideal for swimming, diving, and other activities, ensuring comfort and enjoyment for lengthened periods.

Daylight

In Sarasota, 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 7:50 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:17 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 in Sarasota, Florida. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum UV index of 7 in September translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Attention! The reflection of both water and sand can increase the intensity of UV rays.