January weather forecast
Cape May, NJ

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The superior design on the city of Cape May, New Jersey, with deep road veins and city buildings near the vast, blue sea in a far view
The superior design on the city of Cape May, New Jersey, with deep road veins and city buildings near the vast, blue sea in a far view

Weather in January

The weather in Cape May sets a chilly tone, indicative of a quintessential midwinter. January is characterized by frosty days, often manifesting in the month's coldest temperature: a high of 40.5°F (4.7°C) and a plummeting low of 32.2°F (0.1°C). As compared to December, January offers less rainfall and less daylight hours. This month also happens to be one of the coldest in the year with a moderate risk of snow. Moving into February, warmer conditions are not to be expected abruptly.

Temperature

In Cape May, New Jersey, January records the lowest average temperatures, peaking at 40.5°F (4.7°C) and reaching a low of 32.2°F (0.1°C).

Humidity

In Cape May, New Jersey, the average relative humidity in January is 74%.

Rainfall

January is the month with the least rainfall. Rain falls for 8.7 days and accumulates 2.13" (54mm) of precipitation.

Snowfall

Months with snowfall are January through March and December. In Cape May, during January, snow falls for 2.4 days and regularly aggregates up to 0.67" (17mm) of snow. Throughout the year, there are 8.3 snowfall days, and 3.11" (79mm) of snow is accumulated.

Ocean temperature

In Cape May, the average seawater temperature in January is 46.4°F (8°C).
Note: It is risky to swim in 46.4°F (8°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation.

Daylight

In January, the average length of the day is 9h and 49min.
On the first day of January, sunrise is at 7:18 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:19 pm EST.

Sunshine

In January, the average sunshine is 5.3h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, a regular UV index of 2 translates into these guidelines:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.

Frequently asked questions

What is the coldest time of year?

The coldest time of the year is January, with temperatures averaging a high of 40.5°F (4.7°C) and a low of 32.2°F (0.1°C).

Is January cold?

The high-temperature, in January, in Cape May, records 40.5°F (4.7°C), while the low-temperature is 32.2°F (0.1°C).

What is the average humidity in January?

In Cape May, the average relative humidity in January is 74%.

What is the driest month?

The month with the least rainfall in Cape May is January, when the rain falls for 8.7 days and typically collects 2.13" (54mm) of precipitation.

How much does it rain in January?

In January, the rain falls for 8.7 days. Throughout January, 2.13" (54mm) of precipitation is accumulated.

How many days does it snow in January?

In Cape May, in January, snow falls for 2.4 days, with typically accumulated 0.67" (17mm) of snow.

What is the ocean temperature in January?

In Cape May, the average seawater temperature in January is 46.4°F (8°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 average length of the day in January?

The average day length in January is 9h and 49min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:18 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:19 pm EST.

How long on average sun shines in January?

In January, the average sunshine duration is 5.3h.

What is the month with the lowest UV index?

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?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk 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 January
Cape May, NJ

Average temperature in January - Cape May, NJ
  • Average high temperature in January: 40.5°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (40.5°F).

  • Average low temperature in January: 32.2°F

The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).

Average pressure in January
Cape May, NJ

Average pressure in January - Cape May, NJ
  • Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in January
Cape May, NJ

Average wind speed in January - Cape May, NJ
  • Average wind speed in January: 13.5mph

The windiest month (with the highest average wind speed) is January (13.5mph).
The calmest month (with the lowest average wind speed) is July (9.2mph).

Average humidity in January
Cape May, NJ

Average humidity in January - Cape May, NJ
  • Average humidity in January: 74%

The month with the highest relative humidity is May (82%).
The month with the lowest relative humidity is November (73%).

Average rainfall in January
Cape May, NJ

Average rainfall in January - Cape May, NJ
  • Average rainfall in January: 2.13"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.13").

Average rainfall days in January
Cape May, NJ

Average rainfall days in January - Cape May, NJ
  • Average rainfall days in January: 8.7 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.7 days).

Average snowfall in January
Cape May, NJ

Average snowfall in January - Cape May, NJ
  • Average snowfall in January: 0.67"

The month with the highest snowfall is December (1.06").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in January
Cape May, NJ

Average snowfall days in January - Cape May, NJ
  • Average snowfall days in January: 2.4 days

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average sea temperature in January
Cape May, NJ

Average sea temperature in January - Cape May, NJ
  • Average sea temperature in January: 46°F

The best month for swimming (with the highest average sea temperature) is August (75°F).
The coldest months (with the lowest average sea temperature) are February and March (43°F).

Average daylight in January /
Average sunshine in January
Cape May, NJ

Average daylight in January / Average sunshine in January - Cape May, 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 30min).

  • 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: 4h and 54min).

Average sunshine days in January
Cape May, NJ

Average sunshine days in January - Cape May, NJ
  • Average sunshine days in January: 18.6 days

The month with the most sunshine days is November (18.9 days).
The months with the least sunshine days are May and June (12.5 days).

Average UV index in January
Cape May, NJ

Average UV index in January - Cape May, NJ
  • Average UV index in January: 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 and December (UV index 2).

Average cloud cover in January
Cape May, NJ

Average cloud cover in January - Cape May, NJ
  • Average cloud cover in January: 43

The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in January
Cape May, NJ

Average visibility in January - Cape May, 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).

Cape May, New Jersey, USA

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