Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In Sea Isle City, the average high-temperature in December gently drops from a fresh 54.3°F (12.4°C) in November to a chilly 46.8°F (8.2°C). Sea Isle City records a slight downturn to an average an icy 39.4°F (4.1°C) during the nights of December.Humidity
In December, the average relative humidity is 75%.Rainfall
In December, in Sea Isle City, the rain falls for 7.2 days. Throughout December, 0.75" (19mm) of precipitation is accumulated. Throughout the year, there are 112.7 rainfall days, and 8.94" (227mm) of precipitation is accumulated.Snowfall
Months with snowfall in Sea Isle City are January through March and December. December is the first month it typically snows. Throughout December, in the average 1.6 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, in Sea Isle City, there are 8.3 snowfall days, and 0.67" (17mm) of snow is accumulated.Daylight
The month with the shortest days in Sea Isle City is December, with an average of 9h and 30min of daylight.On the first day of December, 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
In Sea Isle City, the average sunshine in December is 5.2h.UV index
The months with the lowest UV index in Sea Isle City are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 during December translates into the following guidance:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Sea Isle City?
What is the average humidity in December in Sea Isle City?
How much does it rain in Sea Isle City in December?
When does it start snowing in Sea Isle City?
What is the month with the shortest days in Sea Isle City?
How many hours of daylight does Sea Isle City have in December?
When are sunrise and sunset in December in Sea Isle City?
How long on average sun shines in December in Sea Isle City?
What is the month with the lowest UV index in Sea Isle City?
How high is the UV index in December in Sea Isle City?
Average temperature in December
Sea Isle City, 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
Sea Isle City, 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
Sea Isle City, 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
Sea Isle City, 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
Sea Isle City, 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
Sea Isle City, 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
Sea Isle City, 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
Sea Isle City, 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 daylight in December /
Average sunshine in December
Sea Isle City, NJ
- Average daylight in December: 9h and 3min
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 1min
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
Sea Isle City, 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
Sea Isle City, 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
Sea Isle City, 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
Sea Isle City, 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).
Sea Isle City, New Jersey, USA
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