September weather forecastBald Head Island, NC
September
Weather in September
As summer begins its retreat, September introduces the first hints of Autumn to the weather in Bald Head Island. While days remain relatively hot, nights see a noticeable dip in temperature. A receding pattern is also visible in daylight hours, carving a marked downtrend from the mid-year peak. Moreover, the month is characterized by a decrease in rainfall, coming down significantly from August to 3.27" (83mm). Despite the climatic dip, humidity remains consistently high.Temperature
The beginning of September reveals an average high-temperature of a still moderately hot 81.9°F (27.7°C), showing minimal deviation from the previous month. An average low-temperature of 72.5°F (22.5°C) marks the nights throughout September.Heat index
During September, the heat index is computed to be a hot 87.8°F (31°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. 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 especially vital to children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
In September, the average relative humidity is 76%.Rainfall
In Bald Head Island, in September, during 15.5 rainfall days, 3.27" (83mm) of precipitation is typically accumulated. Throughout the year, there are 157.9 rainfall days, and 24.69" (627mm) of precipitation is accumulated.Snowfall
February through December are months without snowfall.Daylight
In Bald Head Island, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:46 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:57 pm EDT.
Sunshine
In September, the average sunshine is 9.5h.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 unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 6 in September suggests the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bald Head Island, NC
- Average high temperature in September: 81.9°F
The warmest months (with the highest average high temperature) are July and August (85.6°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in September: 72.5°F
The month with the highest average low temperature is July (77.4°F).
The coldest month (with the lowest average low temperature) is January (43.7°F).
Average pressure in September
Bald Head Island, NC
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Bald Head Island, NC
- Average wind speed in September: 9.9mph
The windiest month (with the highest average wind speed) is February (11.6mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in September
Bald Head Island, NC
- Average humidity in September: 76%
The month with the highest relative humidity is June (78%).
The months with the lowest relative humidity are January, March, October and November (74%).
Average rainfall in September
Bald Head Island, NC
- Average rainfall in September: 3.27"
The wettest month (with the highest rainfall) is August (3.7").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in September
Bald Head Island, NC
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is August (19.1 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in September
Bald Head Island, NC
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Bald Head Island, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Bald Head 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 30min
The months with the most sunshine are June and July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Bald Head Island, NC
- Average sunshine days in September: 11.6 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is August (7.8 days).
Average UV index in September
Bald Head 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
Bald Head Island, NC
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in September
Bald Head 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).
