September weather forecast
Cape Carteret, NC

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Weather in September

September, the first month of the autumn in Cape Carteret, is also a moderately hot month, with an average temperature ranging between max 81.3°F (27.4°C) and min 71.6°F (22°C).

Temperature

Cape Carteret transitions into September recording an average high-temperature of a still moderately hot 81.3°F (27.4°C), closely aligning with the preceding month's temperature. Nighttime temperature in Cape Carteret lowers to an average of 71.6°F (22°C) in September.

Heat index

The heat index value during September is calculated to be a tropical 86°F (30°C). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.
Data suggests that the heat index is set for environments in shade and with a light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in September is 77%.

Rainfall

In Cape Carteret, during September, the rain falls for 15 days and regularly aggregates up to 3.03" (77mm) of precipitation. Throughout the year, there are 156.1 rainfall days, and 21.61" (549mm) of precipitation is accumulated.

Snowfall

In Cape Carteret, snow does not fall in April through December.

Ocean temperature

In September, the average ocean temperature is 80.2°F (26.8°C).
Note: For any water activity, surface water temperatures from 77°F (25°C) to 84.2°F (29°C) are deemed perfect and extremely pleasing for enduring enjoyment.

Daylight

In September, the average length of the day 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, in Cape Carteret, sunrise is at 7:02 am and sunset at 6:53 pm EDT.

Sunshine

In Cape Carteret, North Carolina, the average sunshine in September is 9.5h.

UV index

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A typical high UV index of 6 in September suggests the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Attention! UV strength is notably upped by the reflection of sand and water.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature in Cape Carteret?

The average high-temperature and low-temperature during September are 81.3°F (27.4°C) and 71.6°F (22°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is calculated to be 86°F (30°C).

What is the average humidity in September in Cape Carteret?

In Cape Carteret, North Carolina, the average relative humidity in September is 77%.

How much does it rain in Cape Carteret in September?

In Cape Carteret, North Carolina, in September, during 15 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

When it does not snow in Cape Carteret?

In Cape Carteret, North Carolina, snow does not fall in April through December.

What is the ocean temperature in September in Cape Carteret?

In September, the average ocean temperature in Cape Carteret, North Carolina, is 80.2°F (26.8°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Cape Carteret have in September?

In September, the average day length in Cape Carteret, North Carolina, is 12h and 23min.

What time are sunrise and sunset in September in Cape Carteret?

On the first day of September in Cape Carteret, North Carolina, sunrise is at 6:41 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:53 pm EDT.

How many hours of sunshine does Cape Carteret have in September?

In September, the average sunshine duration in Cape Carteret, North Carolina, is 9.5h.

What is the UV index reading in September in Cape Carteret?

The average daily maximum UV index in September in Cape Carteret, North Carolina, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Cape Carteret, NC

Average temperature in September - Cape Carteret, 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
Cape Carteret, NC

Average pressure in September - Cape Carteret, 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
Cape Carteret, NC

Average wind speed in September - Cape Carteret, 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
Cape Carteret, NC

Average humidity in September - Cape Carteret, 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
Cape Carteret, NC

Average rainfall in September - Cape Carteret, 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
Cape Carteret, NC

Average rainfall days in September - Cape Carteret, 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
Cape Carteret, NC

Average snowfall in September - Cape Carteret, 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
Cape Carteret, NC

Average snowfall days in September - Cape Carteret, 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
Cape Carteret, NC

Average sea temperature in September - Cape Carteret, 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
Cape Carteret, NC

Average daylight in September / Average sunshine in September - Cape Carteret, 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
Cape Carteret, NC

Average sunshine days in September - Cape Carteret, 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
Cape Carteret, NC

Average UV index in September - Cape Carteret, 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
Cape Carteret, NC

Average cloud cover in September - Cape Carteret, 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
Cape Carteret, NC

Average visibility in September - Cape Carteret, 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).

Cape Carteret, North Carolina, USA

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