December weather forecastSeaside Heights, NJ
December
Weather in December
In December, Seaside Heights embraces the winter season. Temperatures dip considerably, driving locals and visitors towards thick coats and warm fireplaces. One of the notable weather aspects is significant rainfall, with accumulations reaching 3.7" (94mm). While the days become shorter and colder, providing only limited hours of sunshine, there's a particular charm associated with December's chilly gusts and festive air. A white Christmas might occasionally grace this seaside town, ending the year on a beautiful and serene note.Temperature
Start of December brings a slight shift in the average high-temperature, dipping a bit from November's cool 53.2°F (11.8°C) to a chilly 45.1°F (7.3°C). Seaside Heights's evenings during December maintain an average temperature of 37.8°F (3.2°C), aligning closely with the daytime temperatures.Humidity
The average relative humidity in December in Seaside Heights is 76%.Rainfall
December is the month with the most rainfall. Rain falls for 11.8 days and accumulates 3.7" (94mm) of precipitation.Snowfall
Months with snowfall in Seaside Heights are January through April, November and December. In Seaside Heights, in December, snow falls for 1.9 days, with typically accumulated 1.1" (28mm) of snow. In Seaside Heights, during the entire year, snow falls for 13.1 days and aggregates up to 4.65" (118mm) of snow.Ocean temperature
In Seaside Heights, New Jersey, the average seawater temperature in December is 48.6°F (9.2°C).Note: In 48.6°F (9.2°C), cold shock and rapid breathing can occur when swimming at temperatures below 50°F (10°C).
Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Seaside Heights.On the first day of December, sunrise is at 6:59 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:41 pm EST.
Sunshine
In Seaside Heights, New Jersey, the average sunshine in December is 5.1h.UV index
January through March and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Seaside Heights, NJ
- Average high temperature in December: 45.1°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 December: 37.8°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).
Average pressure in December
Seaside Heights, 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).
Average wind speed in December
Seaside Heights, NJ
- Average wind speed in December: 12.9mph
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).
Average humidity in December
Seaside Heights, NJ
- Average humidity in December: 76%
The months with the highest relative humidity are May and June (81%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in December
Seaside Heights, NJ
- Average rainfall in December: 3.7"
The wettest month (with the highest rainfall) is December (3.7").
The driest month (with the least rainfall) is January (2.01").
Average rainfall days in December
Seaside Heights, NJ
- Average rainfall days in December: 11.8 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).
Average snowfall in December
Seaside Heights, NJ
- Average snowfall in December: 1.1"
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").
Average snowfall days in December
Seaside Heights, NJ
- Average snowfall days in December: 1.9 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).
Average sea temperature in December
Seaside Heights, NJ
- Average sea temperature in December: 48.5°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).
Average daylight in December /
Average sunshine in December
Seaside Heights, NJ
- Average daylight in December: 9h and 24min
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 December: 5h and 6min
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).
Average sunshine days in December
Seaside Heights, NJ
- Average sunshine days in December: 15.9 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).
Average UV index in December
Seaside Heights, 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 and December (UV index 2).
Average cloud cover in December
Seaside Heights, NJ
- Average cloud cover in December: 47
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).
Average visibility in December
Seaside Heights, 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).
