September weather forecast
Madeira Beach, FL

The weather at Madeira Beach, Florida, begins to transition in September, with daily high temperatures registering slightly lower at 86.2°F (30.1°C). Despite the marginal temperature shift, the month remains warm and inviting. The amount of rainfall drops notably, signaling the end of the rainy season. Nights become gradually cooler, and daytime humidity lessens, marking the welcoming stages of autumn. Sea temperatures remain high, keeping water activities attractive before the onset of the cooler fall weather.

Temperature

The transition from August to September brings an average high-temperature of a still tropical 86.2°F (30.1°C), barely different from August's 87.6°F (30.9°C). September nighttime temperatures in Madeira Beach, Florida, hover close to the daytime peak with an average of 77.9°F (25.5°C).

Heat index

The heat index in September is estimated at a fiery hot 96.8°F (36°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Madeira Beach, Florida, in September, during 21.2 rainfall days, 3.5" (89mm) of precipitation is typically accumulated. Throughout the year, there are 165.3 rainfall days, and 26.93" (684mm) of precipitation is accumulated.

Ocean temperature

In Madeira Beach, Florida, 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 regarded as highly pleasant, making all water activities enjoyable without any discomfort over long durations.

Daylight

In Madeira Beach, the average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 7:10 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:18 pm EDT.

Sunshine

The average sunshine in September in Madeira Beach 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 value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Note! Reflective surfaces like sand and water heighten the UV radiation levels.