September weather forecastAtlantic Beach, SC
September
Weather in September
September, the first month of the autumn in Atlantic Beach, is still a warm month, with an average temperature fluctuating between 70.7°F (21.5°C) and 81.7°F (27.6°C).Temperature
The advent of September brings an average high-temperature of a still warm 81.7°F (27.6°C), exhibiting minor difference from the previous month. The average nighttime temperature lowers to a pleasant 70.7°F (21.5°C) throughout September.Heat index
The heat index value for September is computed to be a hot 87.8°F (31°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. 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 'real feel' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
The average relative humidity in September is 77%.Rainfall
In September, the rain falls for 10.5 days. Throughout September, 1.02" (26mm) of precipitation is accumulated. Throughout the year, there are 115.4 rainfall days, and 10.75" (273mm) of precipitation is accumulated.Snowfall
In Atlantic Beach, snow does not fall in April through November.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:09 am and sunset at 7:00 pm EDT.
Sunshine
In Atlantic Beach, the average sunshine in September is 9.6h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 6 during September leads to these instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Atlantic Beach, SC
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in September: 70.7°F
The month with the highest average low temperature is July (75.9°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in September
Atlantic Beach, SC
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Atlantic Beach, SC
- Average wind speed in September: 8.8mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in September
Atlantic Beach, SC
- Average humidity in September: 77%
The months with the highest relative humidity are May, June, August and December (78%).
The month with the lowest relative humidity is January (74%).
Average rainfall in September
Atlantic Beach, SC
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is August (1.81").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Atlantic Beach, SC
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is August (16 days).
The month with the least rainy days is January (6.3 days).
Average snowfall days in September
Atlantic Beach, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Atlantic Beach, SC
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 36min
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 36min).
Average sunshine days in September
Atlantic Beach, SC
- Average sunshine days in September: 14 days
The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is August (10.8 days).
Average UV index in September
Atlantic Beach, SC
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Atlantic Beach, SC
- Average cloud cover in September: 29
The month with the most cloud cover is December (Cloud cover 40).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Atlantic Beach, SC
- 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).
