December weather forecast and climate
Brooklyn, NY

Weather in December

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

Temperature

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

Humidity

The average relative humidity in December is 75%.

Rainfall

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

Snowfall

January through April and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 2.3 snowfall days, it receives 0.2" (5mm) of snow. In Brooklyn, during the entire year, snow falls for 13 days, and aggregates up to 1.3" (33mm) of snow.

Ocean temperature

In Brooklyn, the average seawater temperature in December is 48°F (8.9°C).
Note: 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.

Daylight

December has the shortest days of the year in Brooklyn, New York, with an average of 9.3h of daylight.

Sunshine

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

UV index

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
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 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 temperature in December in Brooklyn?

In December, the average high-temperature is 43.2°F (6.2°C), and the average low-temperature is 34.7°F (1.5°C).

What is the average humidity in December in Brooklyn?

The average relative humidity in December in Brooklyn, New York, is 75%.

How much does it rain in Brooklyn in December?

In Brooklyn, New York, in December, it is raining for 8.2 days, with typically 0.94" (24mm) of accumulated precipitation.

When does it start snowing 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, New York, in December, the average water temperature 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 9.3h of daylight, December has the shortest days of the year.

What is the average length of the day in December in Brooklyn?

The average length of the day in December in Brooklyn is 9.3h.

How many hours of sunshine does Brooklyn have in December?

The average sunshine in December is 5h.

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

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

What is the UV index intensity in December in Brooklyn?

In Brooklyn, New York, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the UV radiation.

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"

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

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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%

Months with the highest relative humidity are February, May and June (76%).
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").
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

Months with the highest number of snowfall days are January and February (3.6 days).
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: 9.3h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 5h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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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

Months with the highest UV index are June, July and August (UV index 6).
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

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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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