December weather forecastHatteras, NC
December
Weather in December
Lastly, Hatteras’ December 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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 9h and 48min
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 30min
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: 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: 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: 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: 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).
