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 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 transition into September shows a subtle variation to a still moderately hot 81.3°F (27.4°C) from August's 85.1°F (29.5°C) in the average high-temperature. Nightly temperatures in Swansboro drop to an average low of 71.6°F (22°C) in September.Heat index
The average heat index in September is appraised at a tropical 86°F (30°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', 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, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
In Swansboro, the average relative humidity in September is 77%.Rainfall
In Swansboro, North Carolina, during September, the rain falls for 15 days and regularly aggregates up to 3.03" (77mm) of precipitation. In Swansboro, during the entire year, the rain falls for 156.1 days and collects up to 21.61" (549mm) of precipitation.Snowfall
April through December are months without snowfall in Swansboro.Ocean temperature
In Swansboro, North Carolina, the average seawater temperature in September is 80.2°F (26.8°C).Note: Temperatures between 77°F (25°C) and 84.2°F (29°C) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.
Daylight
In Swansboro, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:34 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:53 pm EDT.
Sunshine
The average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index in Swansboro is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 6 in September leads to these recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Swansboro?
What is the average humidity in September in Swansboro?
How many days does it rain in September in Swansboro?
When it does not snow in Swansboro?
What is the water temperature in September in Swansboro?
What is the average length of the day in September in Swansboro?
When is the sunrise / sunset in September in Swansboro?
How long on average sun shines in September in Swansboro?
What is the UV index intensity in September in Swansboro?
Average temperature in September
Swansboro, NC
- Average high temperature in September: 81.3°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (53.1°F).
- Average low temperature in September: 71.6°F
The month with the highest average low temperature is July (76.6°F).
The coldest month (with the lowest average low temperature) is January (41.2°F).
Average pressure in September
Swansboro, NC
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January, November and December (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Swansboro, NC
- Average wind speed in September: 9.6mph
The windiest months (with the highest average wind speed) are February, March and April (11.1mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in September
Swansboro, NC
- Average humidity in September: 77%
The month with the highest relative humidity is August (78%).
The months with the lowest relative humidity are January, February, March and April (74%).
Average rainfall in September
Swansboro, NC
- Average rainfall in September: 3.03"
The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in September
Swansboro, NC
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is August (20.1 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in September
Swansboro, NC
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.2").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Swansboro, NC
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January, February and December (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Swansboro, NC
- Average sea temperature in September: 80.2°F
The best month for swimming (with the highest average sea temperature) is August (82.6°F).
The coldest month (with the lowest average sea temperature) is February (57.7°F).
Average daylight in September /
Average sunshine in September
Swansboro, NC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Swansboro, NC
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is January (19.4 days).
The month with the least sunshine days is August (8.4 days).
Average UV index in September
Swansboro, NC
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Swansboro, NC
- Average cloud cover in September: 32
The months with the most cloud cover are February, March and December (Cloud cover 40).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in September
Swansboro, NC
- 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).
Swansboro, North Carolina, USA
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