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
The transition into December is accompanied by a slight temperature decrease, with the average high-temperature shifting from a cool 52.7°F (11.5°C) in November to a frosty 45°F (7.2°C). A consistent average low of 37.9°F (3.3°C) is noted throughout December, only a small step down from its daytime high.Humidity
In December, the average relative humidity is 74%.Rainfall
December is the month with the most rainfall in Sag Harbor, New York. Rain falls for 12.8 days and accumulates 3.82" (97mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In December, in Sag Harbor, it is snowing for 2.3 days. Throughout December, 0.91" (23mm) of snow is accumulated. Throughout the year, in Sag Harbor, there are 13.9 snowfall days, and 6.61" (168mm) of snow is accumulated.Ocean temperature
In December, the average ocean temperature in Sag Harbor, New York, is 49.8°F (9.9°C).Note: It is risky to swim in 49.8°F (9.9°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation.
Daylight
December has the shortest days of the year in Sag Harbor, with an average of 9h and 18min of daylight.On the first day of December in Sag Harbor, sunrise is at 6:55 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:31 pm EST.
Sunshine
With an average of 4.6h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 2 in December leads to these recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
What are December temperatures in Sag Harbor?
What is the average humidity in December in Sag Harbor?
What is the wettest month in Sag Harbor?
How much does it rain in Sag Harbor in December?
How many days does it snow in December in Sag Harbor?
What is the ocean temperature in December in Sag Harbor?
What is the month with the shortest days in Sag Harbor?
What is the average length of the day in December in Sag Harbor?
What time are sunrise and sunset in December in Sag Harbor?
What is the month with the least sunshine in Sag Harbor?
How many hours of sunshine does Sag Harbor have in December?
What are the months with the lowest UV index in Sag Harbor?
What is the UV index intensity in December in Sag Harbor?
Average temperature in December
Sag Harbor, NY
- Average high temperature in December: 45°F
The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 37.9°F
The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).
Average pressure in December
Sag Harbor, NY
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Sag Harbor, NY
- Average wind speed in December: 15.7mph
The windiest month (with the highest average wind speed) is January (16mph).
The calmest month (with the lowest average wind speed) is July (10.4mph).
Average humidity in December
Sag Harbor, NY
- Average humidity in December: 74%
The months with the highest relative humidity are May and June (81%).
The month with the lowest relative humidity is November (72%).
Average rainfall in December
Sag Harbor, NY
- Average rainfall in December: 3.82"
The wettest month (with the highest rainfall) is December (3.82").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in December
Sag Harbor, NY
- Average rainfall days in December: 12.8 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in December
Sag Harbor, NY
- Average snowfall in December: 0.91"
The month with the highest snowfall is March (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Sag Harbor, NY
- Average snowfall days in December: 2.3 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Sag Harbor, NY
- Average sea temperature in December: 49.8°F
The best month for swimming (with the highest average sea temperature) is August (73.3°F).
The coldest month (with the lowest average sea temperature) is February (39.8°F).
Average daylight in December /
Average sunshine in December
Sag Harbor, NY
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in December
Sag Harbor, NY
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is February (12.8 days).
Average UV index in December
Sag Harbor, 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
Sag Harbor, NY
- Average cloud cover in December: 52
The month with the most cloud cover is December (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Sag Harbor, 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).
Sag Harbor, New York, USA
Weather forecast for your location
2. Allow the app to use your location