December weather forecast
Brooklyn, NY

Weather in December

December, the first month of the winter in Brooklyn, is also a frosty month, with an average temperature varying between 34.7°F (1.5°C) and 43.2°F (6.2°C).

Temperature

In December, the average high-temperature slightly decreases from a cool 52°F (11.1°C) in November to a chilly 43.2°F (6.2°C). The average low-temperature, in Brooklyn, is 34.7°F (1.5°C).

Humidity

The average relative humidity in December in Brooklyn is 75%.

Rainfall

In Brooklyn, during December, the rain falls for 8.2 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Brooklyn, during the entire year, the rain falls for 110.8 days and collects up to 10.39" (264mm) of precipitation.

Snowfall

Months with snowfall in Brooklyn are January through April and December. December is the first month it typically snows in Brooklyn, New York. Throughout December, in the average 2.3 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 13 snowfall days, and 1.3" (33mm) of snow is accumulated.

Ocean temperature

In Brooklyn, the average water temperature is 48°F (8.9°C).
Note: Swimming in 48°F (8.9°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The month with the shortest days in Brooklyn, New York, is December, with an average of 9h and 19min of daylight.
On the first day of the month, sunrise is at 7:00 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:38 pm EST.

Sunshine

In Brooklyn, the average sunshine in December is 5h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 in December transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Brooklyn?

In Brooklyn, the average relative humidity in December is 75%.

How many days does it rain in December in Brooklyn?

In Brooklyn, during December, the rain falls for 8.2 days and regularly aggregates up to 0.94" (24mm) of precipitation.

When does it start to snow in Brooklyn?

December is the first month it typically snows. Throughout December, in the average 2.3 snowfall days, it receives 0.2" (5mm) of snow.

What is the water temperature in December in Brooklyn?

In Brooklyn, the average seawater temperature in December is 48°F (8.9°C). Swimming in 48°F (8.9°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Brooklyn?

With an average of 9h and 19min of daylight, December has the shortest days of the year.

How many hours of daylight does Brooklyn have in December?

The average day length in December in Brooklyn, New York, is 9h and 19min.

When is the sunrise / sunset in December in Brooklyn?

In December, on the first day of the month, sunrise is at 7:00 am and sunset at 4:29 pm. On the last day of the month, in Brooklyn, sunrise is at 7:19 am and sunset at 4:38 pm EST.

How many hours of sunshine does Brooklyn have in December?

In Brooklyn, New York, the average sunshine duration in December is 5h.

What is the month with the lowest UV index in Brooklyn?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Brooklyn.

How high is the UV index in December in Brooklyn?

The average daily maximum UV index in December in Brooklyn, New York, is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Brooklyn, NY

Average temperature in December - Brooklyn, NY
  • Average high temperature in December: 43.2°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 (37°F).

  • Average low temperature in December: 34.7°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

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Average pressure in December
Brooklyn, NY

Average pressure in December - Brooklyn, NY
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Brooklyn, NY

Average wind speed in December - Brooklyn, NY
  • Average wind speed in December: 10.7mph

The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).

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Average humidity in December
Brooklyn, NY

Average humidity in December - Brooklyn, NY
  • Average humidity in December: 75%

The months with the highest relative humidity are February, May and June (76%).
The months with the lowest relative humidity are August and November (72%).

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Average rainfall in December
Brooklyn, NY

Average rainfall in December - Brooklyn, NY
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is September (0.51").

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Average rainfall days in December
Brooklyn, NY

Average rainfall days in December - Brooklyn, NY
  • Average rainfall days in December: 8.2 days

The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is January (4.9 days).

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Average snowfall in December
Brooklyn, NY

Average snowfall in December - Brooklyn, NY
  • Average snowfall in December: 0.2"

The month with the highest snowfall is March (0.55").
The months with the least snowfall are May, June, July, August, September, October and November (0").

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Average snowfall days in December
Brooklyn, NY

Average snowfall days in December - Brooklyn, NY
  • Average snowfall days in December: 2.3 days

The months with the highest number of snowfall days are January and February (3.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in December
Brooklyn, NY

Average sea temperature in December - Brooklyn, NY
  • Average sea temperature in December: 48.1°F

The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).

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Average daylight in December /
Average sunshine in December
Brooklyn, NY

Average daylight in December / Average sunshine in December - Brooklyn, NY
  • Average daylight in December: 9h and 19min

The month with the longest days is June (Average daylight: 15h and 2min).
The month with the shortest days is December (Average daylight: 9h and 19min).

  • Average sunshine in December: 5h and 0min

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 48min).

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Average sunshine days in December
Brooklyn, NY

Average sunshine days in December - Brooklyn, NY
  • Average sunshine days in December: 20.6 days

The month with the most sunshine days is January (22 days).
The month with the least sunshine days is June (16 days).

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Average UV index in December
Brooklyn, NY

Average UV index in December - Brooklyn, NY
  • 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, March, November and December (UV index 2).

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Average cloud cover in December
Brooklyn, NY

Average cloud cover in December - Brooklyn, NY
  • Average cloud cover in December: 47

The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in December
Brooklyn, NY

Average visibility in December - Brooklyn, NY
  • 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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