December weather forecast
Hatteras, NC

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Weather in December

Lastly, HatterasDecember weather marks the year-end with the coldest temperatures and carries these on into the new year. The city experiences the shortest daylight hours of the year, equivalent to 9.8 hours. The sea temperature plummets further to 66°F (18.9°C), chasing away even the bravest swimmers. With the UV index dropping to 4, avoiding the sun's rays becomes less of a concern. Adding on, this month records an average rainfall of 0.75" (19mm) over 6.5 rainy days.

Temperature

The arrival of December is marked by an average high-temperature of a mild 59°F (15°C), bearing a close resemblance to November. The nights of December in Hatteras cool down to an average low of 52.2°F (11.2°C), subtly lower than daytime highs.

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Hatteras, North Carolina, in December, it is raining for 6.5 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, in Hatteras, North Carolina, there are 100.9 rainfall days, and 8.58" (218mm) of precipitation is accumulated.

Snowfall

January through March and December are months with snowfall in Hatteras, North Carolina. The months with the most snowfall days in Hatteras are January through March and December, with an average of 0.1 snowfall days.

Ocean temperature

In Hatteras, the average seawater temperature in December is 66.2°F (19°C).
Note: In water with a temperature of 66.2°F (19°C), most individuals do not find swimming enjoyable. As the temperature falls from 69.8°F (21°C) to 59°F (15°C), breathing control becomes more difficult.

Daylight

The month with the shortest days in Hatteras is December, with an average of 9h and 48min of daylight.
On the first day of December in Hatteras, sunrise is at 6:53 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:01 pm EST.

Sunshine

In Hatteras, the average sunshine in December is 5.5h.

UV index

The average daily maximum UV index in December in Hatteras, North Carolina, is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, a daily UV index of 4 turns into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Stay sun-safe with clothing that is both closely woven and worn loosely. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

What is the average December temperature in Hatteras?

During December, Hatteras experiences an average high-temperature of 59°F (15°C) and a low-temperature of 52.2°F (11.2°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in August is appraised at 86°F (30°C).

What is the average humidity in December in Hatteras?

In Hatteras, North Carolina, the average relative humidity in December is 76%.

How many days does it rain in December in Hatteras?

In Hatteras, North Carolina, in December, during 6.5 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

When does it snow the most in Hatteras?

The months with the most snowfall days in Hatteras are January through March and December, with an average of 0.1 snowfall days.

When does it start snowing in Hatteras?

December is the first month it typically snows in Hatteras. Throughout December, there are 0.1 snowfall days.

What is the ocean temperature in December in Hatteras?

In Hatteras, North Carolina, in December, the average water temperature is 66.2°F (19°C). For swimming, a surface water temperature of 66.2°F (19°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

What is the month with the shortest days in Hatteras?

With an average of 9h and 48min of daylight, December has the shortest days of the year.

How many hours of daylight does Hatteras have in December?

The average day length in December in Hatteras, North Carolina, is 9h and 50min.

What time are sunrise and sunset in December in Hatteras?

On the first day of December in Hatteras, North Carolina, sunrise is at 6:53 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:01 pm EST.

How many hours of sunshine does Hatteras have in December?

In December, the average sunshine duration in Hatteras, North Carolina, is 5.5h.

What is the UV index reading in December in Hatteras?

In December, the average daily maximum UV index in Hatteras is 4. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Hatteras, NC

Average temperature in December - Hatteras, NC
  • Average high temperature in December: 59°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (54.5°F).

  • Average low temperature in December: 52.2°F

The month with the highest average low temperature is July (78.4°F).
The coldest month (with the lowest average low temperature) is January (46°F).

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Average pressure in December
Hatteras, NC

Average pressure in December - Hatteras, NC
  • Average pressure in December: 30.11"Hg

The months with the highest atmospheric pressure are January, November and December (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed in December
Hatteras, NC

Average wind speed in December - Hatteras, NC
  • Average wind speed in December: 15.8mph

The windiest month (with the highest average wind speed) is March (17mph).
The calmest month (with the lowest average wind speed) is August (12mph).

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Average humidity in December
Hatteras, NC

Average humidity in December - Hatteras, NC
  • Average humidity in December: 76%

The months with the highest relative humidity are May, June and July (79%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in December
Hatteras, NC

Average rainfall in December - Hatteras, NC
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is August (1.06").
The driest month (with the least rainfall) is January (0.31").

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Average rainfall days in December
Hatteras, NC

Average rainfall days in December - Hatteras, NC
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is February (5.6 days).

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Average snowfall days in December
Hatteras, NC

Average snowfall days in December - Hatteras, NC
  • Average snowfall days in December: 0.1 days

The months with the highest number of snowfall days are January, February, March and December (0.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in December
Hatteras, NC

Average sea temperature in December - Hatteras, NC
  • Average sea temperature in December: 66°F

The best months for swimming (with the highest average sea temperature) are July and August (81°F).
The coldest month (with the lowest average sea temperature) is February (61°F).

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Average daylight in December /
Average sunshine in December
Hatteras, NC

Average daylight in December / Average sunshine in December - Hatteras, NC
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 5h and 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

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Average sunshine days in December
Hatteras, NC

Average sunshine days in December - Hatteras, NC
  • Average sunshine days in December: 21.6 days

The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (11.3 days).

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Average UV index in December
Hatteras, NC

Average UV index in December - Hatteras, NC
  • Average UV index in December: 4

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).

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Average cloud cover in December
Hatteras, NC

Average cloud cover in December - Hatteras, NC
  • Average cloud cover in December: 41

The month with the most cloud cover is March (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 26).

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Average visibility in December
Hatteras, NC

Average visibility in December - Hatteras, NC
  • Average visibility in December: 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).

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Hatteras, North Carolina, USA

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