September weather forecast
Bay Harbor, FL

September, the first month of the autumn in Bay Harbor, is also a moderately hot month, with temperature in the range of an average high of 85.1°F (29.5°C) and an average low of 75.4°F (24.1°C).

Temperature

The introduction of September sees an average high-temperature of a moderately hot 85.1°F (29.5°C), hardly deviating from August. In Bay Harbor, an average low-temperature of 75.4°F (24.1°C) is recorded during September nights.

Heat index

September's average heat index is calculated to be a torrid 95°F (35°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The average relative humidity in September is 74%.

Rainfall

In September, in Bay Harbor, the rain falls for 18 days. Throughout September, 3.15" (80mm) of precipitation is accumulated. In Bay Harbor, Florida, during the entire year, the rain falls for 164.8 days and collects up to 36.77" (934mm) of precipitation.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of September, sunrise is at 6:19 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:28 pm CDT.

Sunshine

In Bay Harbor, the average sunshine in September is 9.2h.

UV index

In Bay Harbor, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.