January weather forecast
Seaside Heights, NJ

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Seaside homes and boats docked along numerous piers and a long and endless road along the town of Seaside Heights in New Jersey
Seaside homes and boats docked along numerous piers and a long and endless road along the town of Seaside Heights in New Jersey

Weather in January

A new year in Seaside Heights, New Jersey, commences with weather conditions that are mostly cold and humid. The days are often overcast, with sunlight only gracing the township for an average of 5.2 hours per day. Notably, snowfall occurs for about four days, with a peak accumulation of 1.34" (34mm). January leans toward being blustery with northerly winds that underscore the chilly conditions. Experienced locals know this is a time when bundling up becomes second nature.

Temperature

In Seaside Heights, the month of January is known for its lowest average temperatures, reaching a high of 39°F (3.9°C) and a low of 30.2°F (-1°C).

Humidity

The months with the lowest humidity are January and November, with an average relative humidity of 74%.

Rainfall

The month with the least rainfall is January, when the rain falls for 9 days and typically collects 2.01" (51mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Seaside Heights. The month with the most snowfall is January, when snow falls for 4.4 days and typically aggregates up to 1.34" (34mm) of snow.

Ocean temperature

In Seaside Heights, the average seawater temperature in January is 43.3°F (6.3°C).
Note: Beware of 43.3°F (6.3°C) waters at 55.4°F (13°C), they're uninviting, and a dip below 50°F (10°C) has risks of breath loss and cold shock, contingent on health.

Daylight

In Seaside Heights, the average length of the day in January is 9h and 43min.
On the first day of January, sunrise is at 7:17 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:13 pm EST.

Sunshine

The average sunshine in January is 5.2h.

UV index

The months with the lowest UV index in Seaside Heights are January through March and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 2 during January leads to these advisories:
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. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Frequently asked questions

What time of the year is the coldest in Seaside Heights?

Seaside Heights's coldest temperatures are experienced in January, with average high temperatures of 39°F (3.9°C) and lows of 30.2°F (-1°C).

How cold is it in Seaside Heights in January?

During January, Seaside Heights experiences an average high-temperature of 39°F (3.9°C) and a low-temperature of 30.2°F (-1°C).

What are the least humid months in Seaside Heights?

January and November, with an average relative humidity of 74%, are the least humid months.

What is the average humidity in January in Seaside Heights?

In January, the average relative humidity in Seaside Heights, New Jersey, is 74%.

What is the driest month in Seaside Heights?

January is the month with the least rainfall in Seaside Heights. Rain falls for 9 days and accumulates 2.01" (51mm) of precipitation.

How much does it rain in Seaside Heights in January?

In Seaside Heights, in January, during 9 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.

What is the snowiest month in Seaside Heights?

January is the month with the most snowfall. Snow falls for 4.4 days and accumulates 1.34" (34mm) of snow.

How much does it snow in Seaside Heights in January?

In Seaside Heights, in January, during 4.4 snowfall days, 1.34" (34mm) of snow is typically accumulated.

What is the ocean temperature in January in Seaside Heights?

In Seaside Heights, in January, the average water temperature is 43.3°F (6.3°C). Swimming in 43.3°F (6.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Seaside Heights have in January?

The average day length in January in Seaside Heights is 9h and 43min.

When are sunrise and sunset in January in Seaside Heights?

In January, on the first day of the month, sunrise is at 7:17 am and sunset at 4:41 pm. On the last day of the month, in Seaside Heights, sunrise is at 7:05 am and sunset at 5:13 pm EST.

How many hours of sunshine does Seaside Heights have in January?

In January, the average sunshine duration in Seaside Heights, New Jersey, is 5.2h.

What are the months with the lowest UV index in Seaside Heights?

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

What is the UV index intensity in January in Seaside Heights?

In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
45.1°F 7.3°C
39°F 3.9°C
41°F 5°C
Average low temperature
37.8°F 3.2°C
30.2°F -1°C
31.8°F -0.1°C
Average pressure
30.08" 764mmHg
30.07" 764mmHg
30.04" 763mmHg
Average wind speed
12.9mph 20.8km/h
13.5mph 21.7km/h
13.2mph 21.2km/h
Average max. wind speed
13.7mph 22km/h
14.3mph 23km/h
13.9mph 22.4km/h
Average wind speed gusts
19.3mph 31.1km/h
20mph 32.2km/h
20.5mph 33km/h
Average humidity
76%
74%
76%
Average rainfall
3.7" 94mm
2.01" 51mm
2.52" 64mm
Average rainfall days
11.8
9
10.1
Average snowfall
1.1" 28mm
1.34" 34mm
0.94" 24mm
Average snowfall days
1.9
4.4
3.9
Average sea temperature
48.5°F 9.2°C
43.3°F 6.3°C
40.8°F 4.9°C
Average daylight
9h 2min
9h 4min
10h 4min
Average sunshine
5h 1min
5h 1min
4h 5min
Average sunshine days
15.9
17.8
13.5
Average UV index
2
2
2
Average cloud cover
47%
43%
48%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Seaside Heights, NJ

Average temperature in January - Seaside Heights, NJ
  • Average high temperature in January: 39°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in January: 30.2°F

The month with the highest average low temperature is August (71.6°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

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Average pressure in January
Seaside Heights, NJ

Average pressure in January - Seaside Heights, 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 (29.93"Hg).

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Average wind speed in January
Seaside Heights, NJ

Average wind speed in January - Seaside Heights, 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 (8.8mph).

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Average humidity in January
Seaside Heights, NJ

Average humidity in January - Seaside Heights, NJ
  • Average humidity in January: 74%

The months with the highest relative humidity are May and June (81%).
The months with the lowest relative humidity are January and November (74%).

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Average rainfall in January
Seaside Heights, NJ

Average rainfall in January - Seaside Heights, NJ
  • Average rainfall in January: 2.01"

The wettest month (with the highest rainfall) is December (3.7").
The driest month (with the least rainfall) is January (2.01").

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Average rainfall days in January
Seaside Heights, NJ

Average rainfall days in January - Seaside Heights, NJ
  • Average rainfall days in January: 9 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (9 days).

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Average snowfall in January
Seaside Heights, NJ

Average snowfall in January - Seaside Heights, NJ
  • Average snowfall in January: 1.34"

The month with the highest snowfall is January (1.34").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Seaside Heights, NJ

Average snowfall days in January - Seaside Heights, NJ
  • Average snowfall days in January: 4.4 days

The month with the highest number of snowfall days is January (4.4 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
Seaside Heights, NJ

Average sea temperature in January - Seaside Heights, NJ
  • Average sea temperature in January: 43.3°F

The best month for swimming (with the highest average sea temperature) is August (75.8°F).
The coldest month (with the lowest average sea temperature) is February (40.8°F).

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Average daylight in January /
Average sunshine in January
Seaside Heights, NJ

Average daylight in January / Average sunshine in January - Seaside Heights, NJ
  • Average daylight in January: 9h and 4min

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 24min).

  • Average sunshine in January: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in January
Seaside Heights, NJ

Average sunshine days in January - Seaside Heights, NJ
  • Average sunshine days in January: 17.8 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (13.1 days).

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Average UV index in January
Seaside Heights, NJ

Average UV index in January - Seaside Heights, 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, March and December (UV index 2).

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Average cloud cover in January
Seaside Heights, NJ

Average cloud cover in January - Seaside Heights, NJ
  • Average cloud cover in January: 43

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in January
Seaside Heights, NJ

Average visibility in January - Seaside Heights, 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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Seaside Heights, New Jersey, USA

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