January weather forecast
Atlantic City, NJ

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YearJanuaryFMAMJJASOND
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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 January

Atlantic City experiences a chilly start to the year, as January brings a wintry mix of snow and rain. Typically, the mercury fluctuates from 31.1°F (-0.5°C) to a high of 39.9°F (4.4°C). An average UV index of 2 indicates minimal solar radiation, making it safe for outdoor activities without the risk of sunburn. However, the Atlantic sea remains icy cold, discouraging water sports. The weather gradually warms up towards the end of the month, opening the way for occasional glimpses of spring.

Temperature

January tends to be the coldest month in Atlantic City, New Jersey, with temperatures averaging a daily high of 39.9°F (4.4°C) and a low of 31.1°F (-0.5°C).

Humidity

The average relative humidity in January in Atlantic City, New Jersey, is 74%.

Rainfall

January is the month with the least rainfall in Atlantic City. Rain falls for 7.4 days and accumulates 0.71" (18mm) of precipitation.

Snowfall

January through March and December are months with snowfall in Atlantic City, New Jersey. January is the month with the most snowfall. Snow falls for 3.7 days and accumulates 0.63" (16mm) of snow.

Ocean temperature

In January, the average ocean temperature is 42.4°F (5.8°C).
Note: Navigating the 42.4°F (5.8°C) at 55.4°F (13°C) is no joy, and temperatures less than 50°F (10°C) can threaten breathing and cause a chilling shock, gauging personal stamina.

Daylight

The average length of the day in January in Atlantic City is 9h and 46min.
On the first day of January, sunrise is at 7:17 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:16 pm EST.

Sunshine

In January, the average sunshine is 5.4h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 2 during January leads to these instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

What is the coldest time of year in Atlantic City?

In Atlantic City, January is the month with the lowest recorded average temperatures, measuring a high of 39.9°F (4.4°C) and a low of 31.1°F (-0.5°C).

Is it cold in Atlantic City during January?

Atlantic City in January has an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 31.1°F (-0.5°C).

What is the average humidity in January in Atlantic City?

In Atlantic City, the average relative humidity in January is 74%.

What is the driest month in Atlantic City?

January is the month with the least rainfall. Rain falls for 7.4 days and accumulates 0.71" (18mm) of precipitation.

How much does it rain in Atlantic City in January?

In Atlantic City, New Jersey, in January, during 7.4 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

What is the snowiest month in Atlantic City?

January is the month with the most snowfall in Atlantic City, New Jersey. Snow falls for 3.7 days and accumulates 0.63" (16mm) of snow.

How many days does it snow in January in Atlantic City?

In Atlantic City, New Jersey, in January, snow falls for 3.7 days, with typically accumulated 0.63" (16mm) of snow.

How cold is the water in January in Atlantic City?

In January, the average ocean temperature in Atlantic City, New Jersey, is 42.4°F (5.8°C). Swimming in 42.4°F (5.8°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.

How many hours of daylight does Atlantic City have in January?

The average day length in January in Atlantic City is 9h and 46min.

What time are sunrise and sunset in January in Atlantic City?

On the first day of January, sunrise is at 7:17 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:16 pm EST.

How long on average sun shines in January in Atlantic City?

The average sunshine duration in January in Atlantic City, New Jersey, is 5.4h.

When is the lowest UV index in Atlantic City?

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

What is the UV index intensity in January in Atlantic City?

In January, the average daily maximum UV index in Atlantic City is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
46.2°F 7.9°C
39.9°F 4.4°C
42.3°F 5.7°C
Average low temperature
38.3°F 3.5°C
31.1°F -0.5°C
32.7°F 0.4°C
Average pressure
30.09" 764mmHg
30.07" 764mmHg
30.05" 763mmHg
Average wind speed
12.3mph 19.8km/h
12.9mph 20.8km/h
12.6mph 20.3km/h
Average max. wind speed
13.2mph 21.2km/h
13.7mph 22km/h
13.4mph 21.6km/h
Average wind speed gusts
18.9mph 30.4km/h
19.6mph 31.5km/h
20mph 32.2km/h
Average humidity
75%
74%
75%
Average rainfall
1.1" 28mm
0.71" 18mm
0.91" 23mm
Average rainfall days
8.4
7.4
8.1
Average snowfall
0.35" 9mm
0.63" 16mm
0.35" 9mm
Average snowfall days
1.9
3.7
2.5
Average sea temperature
48.2°F 9°C
42.5°F 5.8°C
40.5°F 4.7°C
Average daylight
9h 2min
9h 5min
10h 4min
Average sunshine
5h 1min
5h 2min
5h 0min
Average sunshine days
20.5
20.3
17.3
Average UV index
2
2
2
Average cloud cover
44%
42%
46%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Atlantic City, NJ

Average temperature in January - Atlantic City, NJ
  • Average high temperature in January: 39.9°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 January: 31.1°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 January
Atlantic City, NJ

Average pressure in January - Atlantic City, NJ
  • Average pressure in January: 30.07"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 January
Atlantic City, NJ

Average wind speed in January - Atlantic City, NJ
  • Average wind speed in January: 12.9mph

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 January
Atlantic City, NJ

Average humidity in January - Atlantic City, NJ
  • Average humidity in January: 74%

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 January
Atlantic City, NJ

Average rainfall in January - Atlantic City, NJ
  • Average rainfall in January: 0.71"

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 January
Atlantic City, NJ

Average rainfall days in January - Atlantic City, NJ
  • Average rainfall days in January: 7.4 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 January
Atlantic City, NJ

Average snowfall in January - Atlantic City, NJ
  • Average snowfall in January: 0.63"

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 January
Atlantic City, NJ

Average snowfall days in January - Atlantic City, NJ
  • Average snowfall days in January: 3.7 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 January
Atlantic City, NJ

Average sea temperature in January - Atlantic City, NJ
  • Average sea temperature in January: 42.5°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 January /
Average sunshine in January
Atlantic City, NJ

Average daylight in January / Average sunshine in January - Atlantic City, NJ
  • Average daylight in January: 9h and 5min

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 January: 5h and 2min

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 January
Atlantic City, NJ

Average sunshine days in January - Atlantic City, NJ
  • Average sunshine days in January: 20.3 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 January
Atlantic City, NJ

Average UV index in January - Atlantic City, NJ
  • Average UV index in January: 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 January
Atlantic City, NJ

Average cloud cover in January - Atlantic City, NJ
  • Average cloud cover in January: 42

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 January
Atlantic City, NJ

Average visibility in January - Atlantic City, NJ
  • Average visibility in January: 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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