December weather forecast
Atlantic City, NJ

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Clear blue waters approaching the sandy beach of the distant Atlantic City in New Jersey
Clear blue waters approaching the sandy beach of the distant Atlantic City in New Jersey

Weather in December

Atlantic City experiences the full force of winter in December, with the average temperature dropping to the year's lowest 38.3°F (3.5°C). The sea temperature also tumbles down to 48.2°F (9°C), signifying the coldest month for the Atlantic waters. Yet, despite the cold, the city enjoys 20.5 days of sunshine, offering clear skies and bright winter days. A weather highlight of December is the return of the snowfall, with an average of 0.35" (9mm), converting the city into a scenic winter wonderland. This seasonally appropriate weather rounds off the year, paving the way for another weather cycle in the New Year.

Temperature

December in Atlantic City sees a slight reduction in average high-temperature, with a shift from a fresh 54.1°F (12.3°C) in November to a frosty 46.2°F (7.9°C). In Atlantic City, December's low temperatures hover around an icy 38.3°F (3.5°C), reflecting a minor decrease from the daytime highs.

Humidity

The average relative humidity in December in Atlantic City is 75%.

Rainfall

In Atlantic City, in December, during 8.4 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 121.6 rainfall days, and 12.09" (307mm) of precipitation is accumulated.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 1.9 snowfall days, it receives 0.35" (9mm) of snow. In Atlantic City, New Jersey, during the entire year, snow falls for 10.6 days and aggregates up to 1.69" (43mm) of snow.

Ocean temperature

In Atlantic City, in December, the average water temperature is 48.2°F (9°C).
Note: To swim in 48.2°F (9°C) at less than 50°F (10°C), ensure you're well-protected. Without it, be prepared for a sudden jolt of cold and breathing issues. Remember, even 55.4°F (13°C) is not welcoming.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 6:59 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:44 pm EST.

Sunshine

In December, the average sunshine in Atlantic City is 5.2h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Atlantic City. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In December, an average UV index of 2 transforms into the following instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Frequently asked questions

What is the temperature in December in Atlantic City?

Atlantic City in December has an average high-temperature of 46.2°F (7.9°C) and an average low-temperature of 38.3°F (3.5°C).

What is the average humidity in December in Atlantic City?

In Atlantic City, New Jersey, the average relative humidity in December is 75%.

How much does it rain in Atlantic City in December?

In December, the rain falls for 8.4 days. Throughout December, 1.1" (28mm) of precipitation is accumulated.

When does it start snowing in Atlantic City?

December is the first month it typically snows in Atlantic City, New Jersey. Throughout December, in the average 1.9 snowfall days, it receives 0.35" (9mm) of snow.

How cold is the water in December in Atlantic City?

In Atlantic City, New Jersey, the average seawater temperature in December is 48.2°F (9°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the month with the shortest days in Atlantic City?

December has the shortest days of the year in Atlantic City, with an average of 9h and 24min of daylight.

What is the average length of the day in December in Atlantic City?

In December, the average day length in Atlantic City is 9h and 27min.

When is the sunrise / sunset in December in Atlantic City?

In December, on the first day of the month, sunrise is at 6:59 am and sunset at 4:34 pm. On the last day of the month, in Atlantic City, sunrise is at 7:17 am and sunset at 4:44 pm EST.

How many hours of sunshine does Atlantic City have in December?

In Atlantic City, New Jersey, the average sunshine duration in December is 5.2h.

What is the month with the lowest UV index in Atlantic City?

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Atlantic City, New Jersey.

What is the UV index reading in December in Atlantic City?

In December, the average daily maximum UV index in Atlantic City is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
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
Atlantic City, NJ

Average temperature in December - Atlantic City, NJ
  • Average high temperature in December: 46.2°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in December: 38.3°F

The month with the highest average low temperature is August (72°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).

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Average pressure in December
Atlantic City, NJ

Average pressure in December - Atlantic City, NJ
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Atlantic City, NJ

Average wind speed in December - Atlantic City, NJ
  • Average wind speed in December: 12.3mph

The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).

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Average humidity in December
Atlantic City, NJ

Average humidity in December - Atlantic City, NJ
  • Average humidity in December: 75%

The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).

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Average rainfall in December
Atlantic City, NJ

Average rainfall in December - Atlantic City, NJ
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is October (1.26").
The driest month (with the least rainfall) is January (0.71").

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Average rainfall days in December
Atlantic City, NJ

Average rainfall days in December - Atlantic City, NJ
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is November (6.9 days).

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Average snowfall in December
Atlantic City, NJ

Average snowfall in December - Atlantic City, NJ
  • Average snowfall in December: 0.35"

The month with the highest snowfall is January (0.63").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in December
Atlantic City, NJ

Average snowfall days in December - Atlantic City, NJ
  • Average snowfall days in December: 1.9 days

The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in December
Atlantic City, NJ

Average sea temperature in December - Atlantic City, NJ
  • Average sea temperature in December: 48.2°F

The best month for swimming (with the highest average sea temperature) is August (76.6°F).
The coldest month (with the lowest average sea temperature) is February (40.5°F).

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Average daylight in December /
Average sunshine in December
Atlantic City, NJ

Average daylight in December / Average sunshine in December - Atlantic City, NJ
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in December
Atlantic City, NJ

Average sunshine days in December - Atlantic City, NJ
  • Average sunshine days in December: 20.5 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (14.6 days).

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Average UV index in December
Atlantic City, NJ

Average UV index in December - Atlantic City, NJ
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in December
Atlantic City, NJ

Average cloud cover in December - Atlantic City, NJ
  • Average cloud cover in December: 44

The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 26).

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Average visibility in December
Atlantic City, NJ

Average visibility in December - Atlantic City, NJ
  • 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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Atlantic City, New Jersey, USA

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