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 sea temperature 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
Seaford in December experiences a gentle temperature dip, with average high-temperatures reducing from a fresh 52.2°F (11.2°C) in November to a chilly 44.1°F (6.7°C). Seaford's nights in December maintain a consistent average of 37°F (2.8°C), demonstrating a minimal differential from its daytime temperature.Humidity
The average relative humidity in December is 74%.Rainfall
In Seaford, in December, it is raining for 12.6 days, with typically 3.27" (83mm) of accumulated precipitation. Throughout the year, in Seaford, there are 158.8 rainfall days, and 31.38" (797mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Seaford. In Seaford, in December, during 2.7 snowfall days, 0.59" (15mm) of snow is typically accumulated. Throughout the year, there are 16.8 snowfall days, and 4.17" (106mm) of snow is accumulated.Ocean temperature
In Seaford, in December, the average water temperature is 48°F (8.9°C).Note: It is advised against swimming in 48°F (8.9°C) when it drops below 50°F (10°C). Such temperatures can cause extreme cold shock, leading to hyperventilation.
Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:59 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:36 pm EST.
Sunshine
In December, the average sunshine is 4.9h.UV index
The months with the lowest UV index in Seaford, New York, are January through March and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 2 in December leads to these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
Is December cold in Seaford?
What is the average humidity in December in Seaford?
How much does it rain in Seaford in December?
How much does it snow in Seaford in December?
What is the water temperature in December in Seaford?
What is the month with the shortest days in Seaford?
How many hours of daylight does Seaford have in December?
When is the sunrise / sunset in December in Seaford?
How long on average sun shines in December in Seaford?
When is the lowest UV index in Seaford?
What is the UV index intensity in December in Seaford?
Average temperature in December
Seaford, NY
- Average high temperature in December: 44.1°F
The warmest months (with the highest average high temperature) are July and August (78.4°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 37°F
The months with the highest average low temperature are July and August (72°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in December
Seaford, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Seaford, NY
- Average wind speed in December: 13.4mph
The windiest month (with the highest average wind speed) is January (13.9mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in December
Seaford, NY
- Average humidity in December: 74%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is November (71%).
Average rainfall in December
Seaford, NY
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in December
Seaford, NY
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in December
Seaford, NY
- Average snowfall in December: 0.59"
The month with the highest snowfall is March (1.34").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Seaford, NY
- Average snowfall days in December: 2.7 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in December
Seaford, NY
- Average sea temperature in December: 48.1°F
The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).
Average daylight in December /
Average sunshine in December
Seaford, NY
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 4h and 5min
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 48min).
Average sunshine days in December
Seaford, NY
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in December
Seaford, NY
- 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
Seaford, NY
- Average cloud cover in December: 48
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Seaford, NY
- 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).
Seaford, New York, USA
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