Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Bay Harbor marks the start of September with an average high-temperature of a warm 85.1°F (29.5°C), hinting at a slight fluctuation from August's 87.4°F (30.8°C). Nighttime temperature in Bay Harbor experiences an average drop to 75.4°F (24.1°C) in September.Heat index
For most parts of September, the heat index is computed to be a very hot 95°F (35°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.For clarity, heat index numbers account for light winds and areas under shade. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.
Humidity
In Bay Harbor, the average relative humidity in September is 74%.Rainfall
In Bay Harbor, Florida, in September, it is raining for 18 days, with typically 3.15" (80mm) of accumulated precipitation. In Bay Harbor, 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 September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How much does it rain in Bay Harbor in September?
What is the average length of the day in September?
What time are sunrise and sunset in September in Bay Harbor?
How many hours of sunshine does Bay Harbor have in September?
How high is the UV index in September?
Average temperature in September
Bay Harbor, FL
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is January (60.3°F).
- Average low temperature in September: 75.4°F
The months with the highest average low temperature are July and August (79.9°F).
The coldest month (with the lowest average low temperature) is January (48.7°F).
Average pressure in September
Bay Harbor, FL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in September
Bay Harbor, FL
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are August and September (7.5mph).
Average humidity in September
Bay Harbor, FL
- Average humidity in September: 74%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Bay Harbor, FL
- Average rainfall in September: 3.15"
The wettest month (with the highest rainfall) is August (5.47").
The driest month (with the least rainfall) is November (1.61").
Average rainfall days in September
Bay Harbor, FL
- Average rainfall days in September: 18 days
The month with the highest number of rainy days is August (24 days).
The month with the least rainy days is November (8.5 days).
Average daylight in September /
Average sunshine in September
Bay Harbor, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are May and June (Average sunshine: 11h and 6min).
The months with the least sunshine are February and December (Average sunshine: 5h and 42min).
Average sunshine days in September
Bay Harbor, FL
- Average sunshine days in September: 10.1 days
The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is August (5.6 days).
Average UV index in September
Bay Harbor, FL
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).
Average cloud cover in September
Bay Harbor, FL
- Average cloud cover in September: 25
The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is May (Cloud cover 21).
Average visibility in September
Bay Harbor, 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).
Bay Harbor, Florida, USA
Weather forecast for your location
2. Allow the app to use your location