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

December's advent presents an average high-temperature of a mild 59°F (15°C), indicating a slight variation from the conditions of the previous month. A mild drop to an average of 52.2°F (11.2°C) marks the nights during December.

Humidity

In December, the average relative humidity is 76%.

Rainfall

In December, the rain falls for 6.5 days. Throughout December, 0.75" (19mm) of precipitation is accumulated. Throughout the year, there are 100.9 rainfall days, and 8.58" (218mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March and December. The months with the most snowfall days 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: The majority of individuals find swimming in 66.2°F (19°C) to be unenjoyable. The difficulty in controlling breathing rises as the temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

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

Sunshine

In December, the average sunshine is 5.5h.

UV index

In Hatteras, the average daily maximum UV index in December is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: In December, a daily maximum UV index of 4 leads to the following instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in December?

In Hatteras, in December, the average high-temperature is 59°F (15°C), and the average low-temperature is 52.2°F (11.2°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 86°F (30°C).

What is the average humidity in December?

In December, the average relative humidity is 76%.

How many days does it rain in December?

In Hatteras, during December, the rain falls for 6.5 days and regularly aggregates up to 0.75" (19mm) of precipitation.

When does it snow the most?

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

When does it start to snow?

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

How cold is the water in December?

In Hatteras, the average seawater temperature in December is 66.2°F (19°C). Swimming in 66.2°F (19°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface 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.

What is the average length of the day in December?

In Hatteras, the average day length in December is 9h and 50min.

When are sunrise and sunset in December?

In December, on the first day of the month, 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 is 5.5h.

What is the UV index intensity in December?

In Hatteras, the average daily maximum UV index in December is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe 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).

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).

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).

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%).

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").

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).

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).

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).

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).

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).

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).

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).

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).

Hatteras, North Carolina, USA

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