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 snowfall days in September
- Average sea temperature 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
The shift into September records an average high-temperature of a warm 85.8°F (29.9°C), subtly varied from August's 89.2°F (31.8°C). Atlantic Beach's average low-temperature during September nights is observed to be 75.4°F (24.1°C).Heat index
The heat index for September is evaluated at a fiery hot 96.8°F (36°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.Heat index specifics point out values are for conditions of shade and a slight breeze. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. 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 particularly relevant to children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.
Humidity
In Atlantic Beach, the average relative humidity in September is 75%.Rainfall
In Atlantic Beach, during September, the rain falls for 20 days and regularly aggregates up to 4.09" (104mm) of precipitation. Throughout the year, there are 185.5 rainfall days, and 31.54" (801mm) of precipitation is accumulated.Snowfall
February through November are months without snowfall in Atlantic Beach.Ocean temperature
In September, the average ocean temperature is 82.4°F (28°C).Note: Water activities including swimming and diving at temperatures from 77°F (25°C) to 84.2°F (29°C) are deemed very pleasurable and enjoyable for extended periods, devoid of discomfort.
Daylight
The average length of the day in September in Atlantic Beach is 12h and 20min.On the first day of September in Atlantic Beach, sunrise is at 7:02 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:11 pm EDT.
Sunshine
The average sunshine in September in Atlantic Beach, Florida, is 8.7h.UV index
The months with the highest UV index in Atlantic Beach are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 7 in September translates into the following instructions:
Deter overexposure. Protecting against the sun's effects is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be attentive! The UV exposure is heightened with reflections from sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Atlantic Beach?
What is the average humidity in September in Atlantic Beach?
How many days does it rain in September in Atlantic Beach?
When it does not snow in Atlantic Beach?
What is the ocean temperature in September in Atlantic Beach?
What is the average length of the day in September in Atlantic Beach?
What time are sunrise and sunset in September in Atlantic Beach?
How long on average sun shines in September in Atlantic Beach?
What are the months with the highest UV index in Atlantic Beach?
How high is the UV index in September in Atlantic Beach?
Average temperature in September
Atlantic Beach, FL
- Average high temperature in September: 85.8°F
The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (63.3°F).
- Average low temperature in September: 75.4°F
The months with the highest average low temperature are July and August (77.5°F).
The coldest month (with the lowest average low temperature) is January (50.4°F).
Average pressure in September
Atlantic Beach, FL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are August and September (29.98"Hg).
Average wind speed in September
Atlantic Beach, FL
- Average wind speed in September: 7.2mph
The windiest months (with the highest average wind speed) are January, March, April, October and November (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Atlantic Beach, FL
- Average humidity in September: 75%
The months with the highest relative humidity are August and December (76%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Atlantic Beach, FL
- Average rainfall in September: 4.09"
The wettest month (with the highest rainfall) is August (4.8").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days in September
Atlantic Beach, FL
- Average rainfall days in September: 20 days
The month with the highest number of rainy days is August (25.3 days).
The month with the least rainy days is February (9.8 days).
Average snowfall days in September
Atlantic Beach, FL
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Atlantic Beach, FL
- Average sea temperature in September: 82°F
The best month for swimming (with the highest average sea temperature) is August (84°F).
The coldest months (with the lowest average sea temperature) are January, February and March (70°F).
Average daylight in September /
Average sunshine in September
Atlantic Beach, 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: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).
Average sunshine days in September
Atlantic Beach, FL
- Average sunshine days in September: 7.2 days
The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is August (4.2 days).
Average UV index in September
Atlantic Beach, 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 and December (UV index 4).
Average cloud cover in September
Atlantic Beach, FL
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is May (Cloud cover 26).
Average visibility in September
Atlantic Beach, 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).
Atlantic Beach, Florida, USA
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