September weather forecast
Indialantic, FL

September, the first month of the autumn in Indialantic, is still a warm month, with an average temperature varying between 77.7°F (25.4°C) and 84.7°F (29.3°C).

Temperature

The average high-temperature during September registers at a moderately hot 84.7°F (29.3°C), closely corresponding to the preceding month. Nights in September in Indialantic showcase an average temperature of 77.7°F (25.4°C), slightly cooler than the daytime.

Heat index

September's mean heat index is estimated at a very hot 95°F (35°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Records show heat index calculations are tailored for shaded regions and mild winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In Indialantic, the average relative humidity in September is 78%.

Rainfall

In Indialantic, in September, it is raining for 23.5 days, with typically 4.92" (125mm) of accumulated precipitation. Throughout the year, there are 197.1 rainfall days, and 35.98" (914mm) of precipitation is accumulated.

Ocean temperature

In September, the average ocean temperature is 84°F (28.9°C).
Note: For swimming, diving, and enjoying other water activities, the range of 77°F (25°C) to 84.2°F (29°C) in water temperature is considered ideal, offering pleasure for extended periods without discomfort.

Daylight

In September, the average length of the day in Indialantic is 12h and 19min.
On the first day of September, sunrise is at 7:01 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:09 pm EDT.

Sunshine

In September, the average sunshine in Indialantic is 9h.

UV index

The months with the highest UV index in Indialantic are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 7 in September translates into this advice:
Deter overexposure. Protecting against the sun's effects is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Stay aware! UV radiation is magnified when reflecting off sand and water.