December weather forecast
South Mantoloking Beach, NJ

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Weather in December

The first month of the winter, December, is still a chilly month in South Mantoloking Beach, New Jersey, with temperature in the range of an average low of 37°F (2.8°C) and an average high of 45°F (7.2°C).

Temperature

South Mantoloking Beach's weather subtly changes with the onset of December, barely falling from a cool 52.9°F (11.6°C) in November to a frosty 45°F (7.2°C). December's average low temperature is a wintry 37°F (2.8°C), displaying a subtle drop from its daily peak.

Humidity

In South Mantoloking Beach, the average relative humidity in December is 76%.

Rainfall

In South Mantoloking Beach, in December, during 9.4 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, there are 132 rainfall days, and 17.17" (436mm) of precipitation is accumulated.

Snowfall

Months with snowfall in South Mantoloking Beach are January through March, November and December. December is the month with the most snowfall in South Mantoloking Beach. Snow falls for 2.1 days and accumulates 0.75" (19mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 6:59 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:17 am and sunset at 4:41 pm EST.

Sunshine

In South Mantoloking Beach, the average sunshine in December is 5.1h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 2 in December translates into this advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What is the temperature in December in South Mantoloking Beach?

In South Mantoloking Beach, in December, the average high-temperature is 45°F (7.2°C), and the average low-temperature is 37°F (2.8°C).

What is the average humidity in December in South Mantoloking Beach?

The average relative humidity in December is 76%.

How much does it rain in South Mantoloking Beach in December?

In South Mantoloking Beach, in December, it is raining for 9.4 days, with typically 1.57" (40mm) of accumulated precipitation.

When does it snow the most in South Mantoloking Beach?

The month with the most snowfall in South Mantoloking Beach is December, when snow falls for 2.1 days and typically aggregates up to 0.75" (19mm) of snow.

How many days does it snow in December in South Mantoloking Beach?

In South Mantoloking Beach, in December, snow falls for 2.1 days, with typically accumulated 0.75" (19mm) of snow.

What is the month with the shortest days in South Mantoloking Beach?

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

What is the average length of the day in December in South Mantoloking Beach?

The average day length in December is 9h and 23min.

When is the sunrise / sunset in December in South Mantoloking Beach?

In December, on the first day of the month, sunrise is at 6:59 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:41 pm EST.

How many hours of sunshine does South Mantoloking Beach have in December?

The average sunshine duration in December in South Mantoloking Beach, New Jersey, is 5.1h.

What are the months with the lowest UV index in South Mantoloking Beach?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December in South Mantoloking Beach?

The average daily maximum UV index in December in South Mantoloking Beach is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
South Mantoloking Beach, NJ

Average temperature in December - South Mantoloking Beach, NJ
  • Average high temperature in December: 45°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in December: 37°F

The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

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Average pressure in December
South Mantoloking Beach, NJ

Average pressure in December - South Mantoloking Beach, NJ
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
South Mantoloking Beach, NJ

Average wind speed in December - South Mantoloking Beach, NJ
  • Average wind speed in December: 12.4mph

The windiest month (with the highest average wind speed) is January (13.2mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).

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Average humidity in December
South Mantoloking Beach, NJ

Average humidity in December - South Mantoloking Beach, NJ
  • Average humidity in December: 76%

The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January and November (74%).

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Average rainfall in December
South Mantoloking Beach, NJ

Average rainfall in December - South Mantoloking Beach, NJ
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is July (2.24").
The driest month (with the least rainfall) is January (0.83").

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Average rainfall days in December
South Mantoloking Beach, NJ

Average rainfall days in December - South Mantoloking Beach, NJ
  • Average rainfall days in December: 9.4 days

The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in December
South Mantoloking Beach, NJ

Average snowfall in December - South Mantoloking Beach, NJ
  • Average snowfall in December: 0.75"

The month with the highest snowfall is December (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
South Mantoloking Beach, NJ

Average snowfall days in December - South Mantoloking Beach, NJ
  • Average snowfall days in December: 2.1 days

The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
South Mantoloking Beach, NJ

Average daylight in December / Average sunshine in December - South Mantoloking Beach, NJ
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
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 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in December
South Mantoloking Beach, NJ

Average sunshine days in December - South Mantoloking Beach, NJ
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (13.7 days).

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Average UV index in December
South Mantoloking Beach, NJ

Average UV index in December - South Mantoloking Beach, NJ
  • Average UV index in December: 2

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

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Average cloud cover in December
South Mantoloking Beach, NJ

Average cloud cover in December - South Mantoloking Beach, NJ
  • Average cloud cover in December: 47

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
South Mantoloking Beach, NJ

Average visibility in December - South Mantoloking Beach, 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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South Mantoloking Beach, New Jersey, USA

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