September weather forecastSouth Bay, FL
September
Weather in September
The first month of the autumn, September, is also a hot month in South Bay, Florida, with temperature in the range of an average low of 74.8°F (23.8°C) and an average high of 87.1°F (30.6°C).Temperature
South Bay's average high-temperature in September sits at a still hot 87.1°F (30.6°C), showing little difference from the previous month. In South Bay, an average nighttime temperature of 74.8°F (23.8°C) is expected during September.Heat index
The average heat index in September is estimated at a scorching 104°F (40°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.Metrics for the heat index primarily focus on shaded spots and light wind conditions. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
The most humid month is September, with an average relative humidity of 81%.Rainfall
In South Bay, Florida, during September, the rain falls for 22.4 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, in South Bay, there are 178.9 rainfall days, and 20.51" (521mm) of precipitation is accumulated.Daylight
The average length of the day in September in South Bay, Florida, is 12h and 18min.On the first day of the month, sunrise is at 7:02 am and sunset at 7:42 pm. On the last day of September, sunrise is at 7:15 am and sunset at 7:10 pm EDT.
Sunshine
In South Bay, 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 estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 7 during September translates into the following directions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
South Bay, FL
- Average high temperature in September: 87.1°F
The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is January (72.9°F).
- Average low temperature in September: 74.8°F
The month with the highest average low temperature is August (76.3°F).
The coldest month (with the lowest average low temperature) is January (57.2°F).
Average pressure in September
South Bay, FL
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).
Average wind speed in September
South Bay, FL
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in September
South Bay, FL
- Average humidity in September: 81%
The month with the highest relative humidity is September (81%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
South Bay, FL
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is August (4.02").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
South Bay, FL
- Average rainfall days in September: 22.4 days
The month with the highest number of rainy days is July (25.1 days).
The month with the least rainy days is January (6.7 days).
Average daylight in September /
Average sunshine in September
South Bay, FL
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
South Bay, FL
- Average sunshine days in September: 6 days
The month with the most sunshine days is January (21.6 days).
The month with the least sunshine days is July (3.6 days).
Average UV index in September
South Bay, FL
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February and December (UV index 5).
Average cloud cover in September
South Bay, FL
- Average cloud cover in September: 30
The months with the most cloud cover are January and December (Cloud cover 33).
The months with the least cloud cover are March, April, May and July (Cloud cover 28).
Average visibility in September
South Bay, FL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
