December weather forecastAvalon, NJ
December
Weather in December
December marks the arrival of winter, plunging the temperature further in Avalon. Snowfall occurs again, after absent during the warm seasons, amounting to 0.2" (5mm). Christmas celebrations light up the town, embracing the winter chill with festive warmth. The near-freezing sea temperature makes water activities far less appealing. Additionally, this month experiences some of the shortest daylight hours, amounting to just 9.5 hours a day.Temperature
The commencement of December includes a gentle temperature shift, with the average high-temperature dropping a bit from a cool 54.3°F (12.4°C) in November to a chilly 46.8°F (8.2°C). Avalon's nocturnal average in December closely mirrors its daytime temperatures, settling at a cold 39.4°F (4.1°C).Humidity
In Avalon, the average relative humidity in December is 75%.Rainfall
In Avalon, in December, during 7.2 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Avalon, during the entire year, the rain falls for 112.7 days and collects up to 8.94" (227mm) of precipitation.Snowfall
January through March and December are months with snowfall. December is the first month it typically snows in Avalon. Throughout December, in the average 1.6 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, in Avalon, there are 8.3 snowfall days, and 0.67" (17mm) of snow is accumulated.Ocean temperature
In Avalon, New Jersey, in December, the average water temperature is 48°F (8.9°C).Note: Dipping into 48°F (8.9°C) below 50°F (10°C) needs protective wear, or you'd face cold shock and breathing issues swiftly. Meanwhile, a slight swim around 55.4°F (13°C) feels cold to the bone.
Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December in Avalon, sunrise is at 6:59 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:46 pm EST.
Sunshine
The average sunshine in December in Avalon is 5.2h.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 value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Avalon, NJ
- Average high temperature in December: 46.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in December: 39.4°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 (32.7°F).
Average pressure in December
Avalon, NJ
- Average pressure in December: 30.09"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).
Average wind speed in December
Avalon, NJ
- Average wind speed in December: 13mph
The windiest month (with the highest average wind speed) is January (13.5mph).
The calmest months (with the lowest average wind speed) are July and August (9.1mph).
Average humidity in December
Avalon, NJ
- Average humidity in December: 75%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall in December
Avalon, NJ
- Average rainfall in December: 0.75"
The wettest months (with the highest rainfall) are May and June (0.98").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Avalon, NJ
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is July (12.7 days).
The month with the least rainy days is November (5.9 days).
Average snowfall in December
Avalon, NJ
- Average snowfall in December: 0.2"
The month with the highest snowfall is February (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Avalon, NJ
- Average snowfall days in December: 1.6 days
The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in December
Avalon, NJ
- Average sea temperature in December: 48°F
The best month for swimming (with the highest average sea temperature) is August (76.5°F).
The coldest month (with the lowest average sea temperature) is February (40.3°F).
Average daylight in December /
Average sunshine in December
Avalon, NJ
- Average daylight in December: 9h and 30min
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 December: 5h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in December
Avalon, NJ
- Average sunshine days in December: 21 days
The months with the most sunshine days are January and November (22.3 days).
The month with the least sunshine days is July (15.6 days).
Average UV index in December
Avalon, 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 and December (UV index 2).
Average cloud cover in December
Avalon, NJ
- Average cloud cover in December: 44
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in December
Avalon, 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).
