Carolina Beach
North Carolina, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Carolina Beach, NC

The first month of the autumn, September, is still a warm month in Carolina Beach, North Carolina, with average temperature fluctuating between 81.7°F (27.6°C) and 73°F (22.8°C).

Temperature

In Carolina Beach, the average high-temperature is almost the same as in August - a still warm 81.7°F (27.6°C). In Carolina Beach, the average low-temperature is 73°F (22.8°C).

Heat index

The average heat index in September is evaluated at a hot 87.1°F (30.6°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, pregnancy, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Carolina Beach, the average relative humidity is 76%.

Rainfall

In September, in Carolina Beach, the rain falls for 11.3 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. In Carolina Beach, North Carolina, during the entire year, the rain falls for 122.3 days and collects up to 11.14" (283mm) of precipitation.

Snowfall

March through December are months without snowfall.

Ocean temperature

In September, the average ocean temperature in Carolina Beach is 80.4°F (26.9°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Carolina Beach, the average length of the day is 12.4h.

Sunshine

In September, the average sunshine in Carolina Beach is 9.4h.

UV index

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Carolina Beach?

In Carolina Beach, North Carolina, in September, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 73°F (22.8°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that factores the actual air temperature with the relative humidity, is evaluated at 87.1°F (30.6°C).

What is the average humidity in September in Carolina Beach?

In September, the average relative humidity in Carolina Beach, North Carolina, is 76%.

How many days does it rain in September in Carolina Beach?

In Carolina Beach, in September, it is raining for 11.3 days, with typically 1.18" (30mm) of accumulated precipitation.

When it does not snow in Carolina Beach?

In Carolina Beach, North Carolina, snow does not fall in March through December.

How warm is the water in September in Carolina Beach?

In Carolina Beach, North Carolina, the average seawater temperature in September is 80.4°F (26.9°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Carolina Beach have in September?

In September, the average length of the day is 12.4h.

How long on average sun shines in September in Carolina Beach?

The average sunshine in September in Carolina Beach is 9.4h.

What is the UV index intensity in September in Carolina Beach?

In Carolina Beach, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in September - Carolina Beach, NC
  • Average high temperature in September: 81.7°F

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: 73°F

The month with the highest average low temperature is July (77.5°F).
The coldest month (with the lowest average low temperature) is January (43.5°F).

Average humidity in September - Carolina Beach, NC
  • Average humidity in September: 76%

Months with the highest relative humidity are May, June, July, August and December (77%).
Months with the lowest relative humidity are January, March, October and November (74%).

Average rainfall in September - Carolina Beach, NC
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is August (1.73").
The driest month (with the lowest rainfall) is January (0.35").

Average rainfall days in September - Carolina Beach, NC
  • Average rainfall days in September: 11.3 days

The month with the highest number of rainy days is August (16 days).
The month with the lowest number of rainy days is November (6.3 days).

Average snowfall days in September - Carolina Beach, NC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.2 days).
Months with the lowest number of snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

Average sea temperature in September - Carolina Beach, NC
  • Average sea temperature in September: 80.4°F

The best month for swimming (with the highest average sea temperature) is August (82.8°F).
The coldest month (with the lowest average sea temperature) is February (57.5°F).

Average daylight in September / Average sunshine in September - Carolina Beach, NC
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 9.4h

The month with most sunshine is July (Average sunshine: 10.8h).
Months with least sunshine are January and December (Average sunshine: 5.5).

Average UV index in September - Carolina Beach, NC
  • Average UV index in September: 6

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).