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
December's onset introduces a mild reduction in the average high-temperature, from a fresh 10.9°C (51.6°F) in November to a chilly 6.5°C (43.7°F). Barnum Island's nights in December maintain a consistent average of 2.6°C (36.7°F), demonstrating a minimal differential from its daytime temperature.Humidity
In Barnum Island, New York, the average relative humidity in December is 74%.Rainfall
In Barnum Island, during December, the rain falls for 11.5 days and regularly aggregates up to 95mm (3.74") of precipitation. Throughout the year, in Barnum Island, there are 159.2 rainfall days, and 944mm (37.17") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Barnum Island, in December, during 2.1 snowfall days, 25mm (0.98") of snow is typically accumulated. In Barnum Island, during the entire year, snow falls for 15.3 days and aggregates up to 128mm (5.04") of snow.Ocean temperature
In December, the average ocean temperature in Barnum Island is 8.9°C (48°F).Note: Dipping into 8.9°C (48°F) below 10°C (50°F) needs protective wear, or you'd face cold shock and breathing issues swiftly. Meanwhile, a slight swim around 13°C (55.4°F) feels cold to the bone.
Daylight
The month with the shortest days in Barnum Island is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 6:59 am and sunset at 4:28 pm. On the last day of December, in Barnum Island, New York, sunrise is at 7:18 am and sunset at 4:37 pm EST.
Sunshine
The average sunshine in December in Barnum Island is 4.9h.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 estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 2 during December translates into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Boost your sun resistance with garments that are densely woven yet spacious. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
Is December cold in Barnum Island?
What is the average humidity in December in Barnum Island?
How much does it rain in Barnum Island in December?
How many days does it snow in December in Barnum Island?
What is the ocean temperature in December in Barnum Island?
What is the month with the shortest days in Barnum Island?
What is the average length of the day in December in Barnum Island?
What time are sunrise and sunset in December in Barnum Island?
How long on average sun shines in December in Barnum Island?
What are the months with the lowest UV index in Barnum Island?
What is the UV index intensity in December in Barnum Island?
Average temperature in December
Barnum Island, NY
- Average high temperature in December: 6.5°C
The warmest month (with the highest average high temperature) is July (26.1°C).
The month with the lowest average high temperature is January (3.2°C).
- Average low temperature in December: 2.6°C
The month with the highest average low temperature is August (22.1°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in December
Barnum Island, NY
- Average pressure in December: 1018.2mbar
The month with the highest atmospheric pressure is November (1019.2mbar).
The month with the lowest atmospheric pressure is June (1013.6mbar).
Average wind speed in December
Barnum Island, NY
- Average wind speed in December: 21.1km/h
The windiest month (with the highest average wind speed) is January (21.9km/h).
The calmest month (with the lowest average wind speed) is July (14.4km/h).
Average humidity in December
Barnum Island, NY
- Average humidity in December: 74%
The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is November (71%).
Average rainfall in December
Barnum Island, NY
- Average rainfall in December: 95mm
The wettest month (with the highest rainfall) is July (106mm).
The driest month (with the least rainfall) is January (55mm).
Average rainfall days in December
Barnum Island, NY
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Barnum Island, NY
- Average snowfall in December: 25mm
The month with the highest snowfall is March (38mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Barnum Island, NY
- Average snowfall days in December: 2.1 days
The months with the highest number of snowfall days are January and February (4.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in December
Barnum Island, NY
- Average sea temperature in December: 8.9°C
The best month for swimming (with the highest average sea temperature) is August (23.4°C).
The coldest month (with the lowest average sea temperature) is February (4.4°C).
Average daylight in December /
Average sunshine in December
Barnum Island, 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
Barnum Island, NY
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in December
Barnum Island, 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
Barnum Island, 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
Barnum Island, NY
- Average visibility in December: 9km
The months with the highest visibility are June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February, March, April, May and December (9km).
Barnum Island, New York, USA
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