September weather forecast
Nurmi Isles, FL

The first month of the autumn, September, is also a moderately hot month in Nurmi Isles, Florida, with an average temperature fluctuating between 80.8°F (27.1°C) and 85.8°F (29.9°C).

Temperature

The average high-temperature is a moderately hot 85.8°F (29.9°C) in September, hardly different from the 87.4°F (30.8°C) recorded in August. Nurmi Isles encounters a small divergence from daytime high temperatures, averaging a low-temperature of 80.8°F (27.1°C) during September nights.

Heat index

September's mean heat index is calculated to be a fiery hot 96.8°F (36°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. One's perception of temperature can vary depending on physical 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 highly critical to babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In Nurmi Isles, the average relative humidity in September is 73%.

Rainfall

In September, in Nurmi Isles, Florida, the rain falls for 23.6 days. Throughout September, 1.73" (44mm) of precipitation is accumulated. In Nurmi Isles, Florida, during the entire year, the rain falls for 179 days and collects up to 15.55" (395mm) of precipitation.

Daylight

In Nurmi Isles, the average length of the day in September is 12h and 18min.
On the first day of September, sunrise is at 7:00 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:07 pm EDT.

Sunshine

In Nurmi Isles, the average sunshine in September is 9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.