December weather forecast
Bayonne, NJ

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Weather in December

December in Bayonne sees a marked shift in weather as winter conditions firmly take hold. In terms of temperature, a sharp decline occurs, and the city experiences average lows of 33.4°F (0.8°C). A notable increase in rainfall to 3.35" (85mm) accompanies the colder temperatures, making it one of the high precipitation months. With the decrease in sunshine hours, snowfall commences, adding to the festive spirit decors. This period also enjoys the second-highest pressure, with a reading of 30.08in, ushering the town into a jovial and bright holiday season.

Temperature

December's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a cool 51.4°F (10.8°C) in November to a wintry 42.6°F (5.9°C). Nighttime temperature lowers to an average of 33.4°F (0.8°C) in December.

Humidity

The months with the highest humidity in Bayonne are February, May and December, with an average relative humidity of 76%.

Rainfall

The wettest months are July and December, with an average 3.35" (85mm) of rainfall.

Snowfall

January through April, November and December are months with snowfall. In Bayonne, in December, during 3.8 snowfall days, 1.38" (35mm) of snow is typically accumulated. In Bayonne, during the entire year, snow falls for 20.2 days and aggregates up to 7.6" (193mm) of snow.

Ocean temperature

In Bayonne, the average seawater temperature in December is 47.1°F (8.4°C).
Note: In 47.1°F (8.4°C), even brief exposure to 55.4°F (13°C) feels biting, and anything less than 50°F (10°C) risks cold shock and impaired breathing, considering one's health.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:01 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:39 pm EST.

Sunshine

The average sunshine in December in Bayonne is 5h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Bayonne, New Jersey. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.
Note: In December, the UV index of 2 transforms into the following advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

Is December cold in Bayonne?

In December, in Bayonne, the average high-temperature is 42.6°F (5.9°C), and the average low-temperature is 33.4°F (0.8°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 86°F (30°C).

What is the most humid month in Bayonne?

February, May and December, with an average relative humidity of 76%, are most humid months in Bayonne, New Jersey.

What is the average humidity in December in Bayonne?

The average relative humidity in December is 76%.

What is the rainiest month in Bayonne?

The months with the most rainfall are July and December, with an average 3.35" (85mm) of precipitation.

How many days does it rain in December in Bayonne?

In Bayonne, New Jersey, in December, during 12.6 rainfall days, 3.35" (85mm) of precipitation is typically accumulated.

How many days does it snow in December in Bayonne?

In Bayonne, New Jersey, in December, snow falls for 3.8 days, with typically accumulated 1.38" (35mm) of snow.

What is the water temperature in December in Bayonne?

In December, the average ocean temperature in Bayonne is 47.1°F (8.4°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 Bayonne?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

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

In December, the average day length in Bayonne is 9h and 19min.

When is the sunrise / sunset in December in Bayonne?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:29 pm. On the last day of the month, in Bayonne, sunrise is at 7:20 am and sunset at 4:39 pm EST.

How long on average sun shines in December in Bayonne?

In Bayonne, New Jersey, the average sunshine duration in December is 5h.

When is the lowest UV index in Bayonne?

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

What is the UV index reading in December in Bayonne?

In Bayonne, New Jersey, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat 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
Bayonne, NJ

Average temperature in December - Bayonne, NJ
  • Average high temperature in December: 42.6°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in December: 33.4°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in December
Bayonne, NJ

Average pressure in December - Bayonne, 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
Bayonne, NJ

Average wind speed in December - Bayonne, NJ
  • Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in December
Bayonne, NJ

Average humidity in December - Bayonne, NJ
  • Average humidity in December: 76%

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

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Average rainfall in December
Bayonne, NJ

Average rainfall in December - Bayonne, NJ
  • Average rainfall in December: 3.35"

The wettest months (with the highest rainfall) are July and December (3.35").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in December
Bayonne, NJ

Average rainfall days in December - Bayonne, NJ
  • Average rainfall days in December: 12.6 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is November (9.5 days).

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Average snowfall in December
Bayonne, NJ

Average snowfall in December - Bayonne, NJ
  • Average snowfall in December: 1.38"

The month with the highest snowfall is March (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Bayonne, NJ

Average snowfall days in December - Bayonne, NJ
  • Average snowfall days in December: 3.8 days

The month with the highest number of snowfall days is January (5.9 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
Bayonne, NJ

Average sea temperature in December - Bayonne, NJ
  • Average sea temperature in December: 47.2°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 (39.7°F).

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Average daylight in December /
Average sunshine in December
Bayonne, NJ

Average daylight in December / Average sunshine in December - Bayonne, 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 18min).

  • 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
Bayonne, NJ

Average sunshine days in December - Bayonne, NJ
  • Average sunshine days in December: 15 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (11.8 days).

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Average UV index in December
Bayonne, NJ

Average UV index in December - Bayonne, 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, March, November and December (UV index 2).

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Average cloud cover in December
Bayonne, NJ

Average cloud cover in December - Bayonne, NJ
  • 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 29).

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Average visibility in December
Bayonne, NJ

Average visibility in December - Bayonne, 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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Bayonne, New Jersey, USA

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