December weather forecastEmerald Isle, NC
December
Weather in December
As December takes over, winter firmly establishes its regime in Emerald Isle. Low temperatures stiffen to an average around 46.6°F (8.1°C), creating a consistently cool atmosphere. Also, the sun retreats considerably, often hiding behind clouds lending the sky a permanently gray outlook. However, the considerably colder sea water deters any thoughts of beach visits. Amid the chilly days, rainfall persists, setting the mood for a quiet indoor holiday season.Temperature
The beginning of December brings a minor change in the average high-temperature, shifting from an enjoyable 63.3°F (17.4°C) in November to a moderate 57.6°F (14.2°C). Emerald Isle records an average low-temperature of 46.6°F (8.1°C) throughout the month of December.Humidity
In Emerald Isle, the average relative humidity in December is 77%.Rainfall
In December, the rain falls for 10.9 days. Throughout December, 1.42" (36mm) of precipitation is accumulated. In Emerald Isle, during the entire year, the rain falls for 156.1 days and collects up to 21.61" (549mm) of precipitation.Snowfall
April through December are months without snowfall.Ocean temperature
In Emerald Isle, in December, the average water temperature is 66°F (18.9°C).Note: In 66°F (18.9°C), swimming is not an enjoyable activity for most. As the temperature decreases from 69.8°F (21°C) to 59°F (15°C), it becomes harder to control breathing.
Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 4:56 pm. On the last day of December, sunrise is at 7:14 am and sunset at 5:07 pm EST.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 3 during December morphs into the following directions:
Guard yourself - Avoiding sunburn is suggested. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Emerald Isle, NC
- Average high temperature in December: 57.6°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 December: 46.6°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 December
Emerald Isle, NC
- Average pressure in December: 30.12"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 December
Emerald Isle, NC
- Average wind speed in December: 10.3mph
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 December
Emerald Isle, NC
- Average humidity in December: 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 December
Emerald Isle, NC
- Average rainfall in December: 1.42"
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 December
Emerald Isle, NC
- Average rainfall days in December: 10.9 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 December
Emerald Isle, NC
- Average snowfall in December: 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 December
Emerald Isle, NC
- Average snowfall days in December: 0.3 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 December
Emerald Isle, NC
- Average sea temperature in December: 65.9°F
The best month for swimming (with the highest average sea temperature) is August (83.2°F).
The coldest month (with the lowest average sea temperature) is February (61.3°F).
Average daylight in December /
Average sunshine in December
Emerald Isle, NC
- Average daylight in December: 9h and 54min
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 December: 5h and 30min
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 December
Emerald Isle, NC
- Average sunshine days in December: 18.5 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 December
Emerald Isle, NC
- Average UV index in December: 3
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 December
Emerald Isle, NC
- Average cloud cover in December: 40
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 December
Emerald Isle, 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).
