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 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
With the onset of September, the average high-temperature registers at a moderately hot 82.2°F (27.9°C), subtly different from August's 86.7°F (30.4°C). Throughout September nights, Castle Hayne experiences a consistent temperature average of 70.3°F (21.3°C).Heat index
The heat index value during September is appraised at a hot 87.8°F (31°C). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.Metrics for the heat index primarily focus on shaded spots and light wind conditions. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
The months with the highest humidity are August, September and December, with an average relative humidity of 77%.Rainfall
In September, in Castle Hayne, the rain falls for 17.7 days. Throughout September, 5.39" (137mm) of precipitation is accumulated. Throughout the year, there are 182.5 rainfall days, and 41.42" (1052mm) of precipitation is accumulated.Snowfall
In Castle Hayne, snow does not fall in April through December.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:45 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:56 pm EDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 6 during September translates into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What are the most humid months?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Castle Hayne have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Castle Hayne have in September?
What is the UV index intensity in September?
Average temperature in September
Castle Hayne, NC
- Average high temperature in September: 82.2°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in September: 70.3°F
The month with the highest average low temperature is July (75.4°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).
Average pressure in September
Castle Hayne, NC
- Average pressure in September: 30.01"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
Castle Hayne, NC
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Castle Hayne, NC
- Average humidity in September: 77%
The months with the highest relative humidity are August, September and December (77%).
The months with the lowest relative humidity are January and March (73%).
Average rainfall in September
Castle Hayne, NC
- Average rainfall in September: 5.39"
The wettest month (with the highest rainfall) is August (5.59").
The driest month (with the least rainfall) is January (1.93").
Average rainfall days in September
Castle Hayne, NC
- Average rainfall days in September: 17.7 days
The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (10.6 days).
Average snowfall in September
Castle Hayne, NC
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.75").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Castle Hayne, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.8 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
Castle Hayne, 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 2min
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
Castle Hayne, NC
- Average sunshine days in September: 9.8 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is August (6.3 days).
Average UV index in September
Castle Hayne, 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, February and December (UV index 3).
Average cloud cover in September
Castle Hayne, NC
- Average cloud cover in September: 31
The months with the most cloud cover are February and December (Cloud cover 40).
The months with the least cloud cover are June and July (Cloud cover 27).
Average visibility in September
Castle Hayne, 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).
Castle Hayne, North Carolina, USA
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