September weather forecastHarkers Island, NC
September
Weather in September
September, the first month of the autumn in Harkers Island, is also a moderately hot month, with an average temperature ranging between max 79.7°F (26.5°C) and min 74.3°F (23.5°C).Temperature
Harkers Island experiences an average high-temperature of a still warm 79.7°F (26.5°C) in September, marking an insignificant shift from 82.9°F (28.3°C) in August. Harkers Island welcomes an average low temperature of 74.3°F (23.5°C) in September, a gentle shift from the day's high.Humidity
The average relative humidity in September is 77%.Rainfall
In Harkers Island, during September, the rain falls for 17.5 days and regularly aggregates up to 4.49" (114mm) of precipitation. In Harkers Island, during the entire year, the rain falls for 181.4 days and collects up to 34.76" (883mm) of precipitation.Snowfall
In Harkers Island, snow does not fall in March through December.Ocean temperature
In Harkers Island, the average seawater temperature in September is 80.8°F (27.1°C).Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.
Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:39 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:51 pm EDT.
Sunshine
In Harkers Island, 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 health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 6 during September translates into the following guidance:
Guard against overexposure. Protection from sun-induced harm is essential. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended. Warning! The reflection of sand and water increases the UV dose.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Harkers Island, NC
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in September: 74.3°F
The month with the highest average low temperature is July (78.3°F).
The coldest month (with the lowest average low temperature) is January (44.6°F).
Average pressure in September
Harkers Island, NC
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is December (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Harkers Island, NC
- Average wind speed in September: 11.6mph
The windiest months (with the highest average wind speed) are February and March (14mph).
The calmest month (with the lowest average wind speed) is August (10.4mph).
Average humidity in September
Harkers Island, NC
- Average humidity in September: 77%
The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are February, March and October (74%).
Average rainfall in September
Harkers Island, NC
- Average rainfall in September: 4.49"
The wettest month (with the highest rainfall) is August (4.84").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days in September
Harkers Island, NC
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is August (22.3 days).
The months with the least rainy days are February and November (11.1 days).
Average snowfall in September
Harkers Island, NC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Harkers Island, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Harkers Island, NC
- Average sea temperature in September: 80.9°F
The best month for swimming (with the highest average sea temperature) is August (83.2°F).
The coldest month (with the lowest average sea temperature) is February (61.3°F).
Average daylight in September /
Average sunshine in September
Harkers Island, NC
- 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: 9h and 54min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Harkers Island, NC
- Average sunshine days in September: 9.7 days
The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is August (5.9 days).
Average UV index in September
Harkers Island, NC
- 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
Harkers Island, NC
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in September
Harkers Island, 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).
