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
Manorhaven's progression into December involves a minor drop in the average high-temperature, slightly receding from a fresh 50.9°F (10.5°C) in November to a cold 42.1°F (5.6°C). In Manorhaven, a slight decrease from the daytime peak is noted during the month of December, with an average low-temperature of 33.8°F (1°C).Humidity
The months with the highest humidity are February, May and December, with an average relative humidity of 75%.Rainfall
December is the month with the most rainfall in Manorhaven. Rain falls for 13 days and accumulates 3.98" (101mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Manorhaven, New York, in December, snow falls for 3.9 days, with typically accumulated 1.69" (43mm) of snow. Throughout the year, in Manorhaven, there are 23 snowfall days, and 8.23" (209mm) of snow is accumulated.Ocean temperature
In December, the average ocean temperature is 48°F (8.9°C).Note: Dipping into 48°F (8.9°C) below 50°F (10°C) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 55.4°F (13°C) can be jarring.
Daylight
December has the shortest days of the year in Manorhaven, with an average of 9h and 18min of daylight.On the first day of December in Manorhaven, New York, sunrise is at 7:00 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:37 pm EST.
Sunshine
The average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Manorhaven in December?
What is the most humid month in Manorhaven?
What is the average humidity in December in Manorhaven?
What is the rainiest month in Manorhaven?
How much does it rain in Manorhaven in December?
How many days does it snow in December in Manorhaven?
What is the water temperature in December in Manorhaven?
What is the month with the shortest days in Manorhaven?
How many hours of daylight does Manorhaven have in December?
What time are sunrise and sunset in December in Manorhaven?
How many hours of sunshine does Manorhaven have in December?
What is the month with the lowest UV index in Manorhaven?
How high is the UV index in December in Manorhaven?
Average temperature in December
Manorhaven, NY
- Average high temperature in December: 42.1°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in December: 33.8°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in December
Manorhaven, NY
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Manorhaven, NY
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
Manorhaven, NY
- Average humidity in December: 75%
The months with the highest relative humidity are February, May and December (75%).
The month with the lowest relative humidity is August (70%).
Average rainfall in December
Manorhaven, NY
- Average rainfall in December: 3.98"
The wettest month (with the highest rainfall) is December (3.98").
The driest month (with the least rainfall) is February (2.36").
Average rainfall days in December
Manorhaven, NY
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in December
Manorhaven, NY
- Average snowfall in December: 1.69"
The month with the highest snowfall is March (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Manorhaven, NY
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Manorhaven, 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
Manorhaven, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Manorhaven, NY
- Average sunshine days in December: 14.9 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in December
Manorhaven, 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, November and December (UV index 2).
Average cloud cover in December
Manorhaven, NY
- Average cloud cover in December: 48
The month with the most cloud cover is December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in December
Manorhaven, 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).
Manorhaven, New York, USA
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