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 arrival comes with a mild decrease in the average high-temperature, moving subtly from a fresh 52.7°F (11.5°C) in November to a frosty 45.3°F (7.4°C). A slight dip in temperature to a cold 38.1°F (3.4°C) marks the average nights during December.Humidity
In December, the average relative humidity is 74%.Rainfall
In Westhampton Beach, in December, it is raining for 11 days, with typically 2.95" (75mm) of accumulated precipitation. Throughout the year, there are 148 rainfall days, and 29.76" (756mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, May and December. December is the first month it typically snows. Throughout December, in the average 2.3 snowfall days, it receives 0.79" (20mm) of snow. In Westhampton Beach, during the entire year, snow falls for 12.9 days and aggregates up to 4.45" (113mm) of snow.Ocean temperature
In Westhampton Beach, in December, the average water temperature is 48.9°F (9.4°C).Note: Taking a dip in 48.9°F (9.4°C) can be perilous. Submersion in temperatures under 50°F (10°C) triggers severe cold shock accompanied by hyperventilation.
Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 6:56 am and sunset at 4:23 pm. On the last day of December, sunrise is at 7:14 am and sunset at 4:33 pm EST.
Sunshine
February and December, with an average of 4.8h of sunshine, are months with the least sunshine.UV index
January through March and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Westhampton Beach in December?
What is the average humidity in December?
How much does it rain in December?
When does it start to snow?
How cold is the water in December?
What is the month with the shortest days?
How many hours of daylight does Westhampton Beach have in December?
What time are sunrise and sunset in December in Westhampton Beach?
What are the months with the least sunshine?
How long on average sun shines in December in Westhampton Beach?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Westhampton Beach, NY
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 38.1°F
The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).
Average pressure in December
Westhampton Beach, 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
Westhampton Beach, NY
- Average wind speed in December: 15mph
The windiest month (with the highest average wind speed) is January (15.4mph).
The calmest month (with the lowest average wind speed) is July (10.2mph).
Average humidity in December
Westhampton Beach, NY
- Average humidity in December: 74%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (72%).
Average rainfall in December
Westhampton Beach, NY
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is October (3.07").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in December
Westhampton Beach, NY
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Westhampton Beach, NY
- Average snowfall in December: 0.79"
The month with the highest snowfall is March (1.54").
The months with the least snowfall are April, June, July, August, September, October and November (0").
Average snowfall days in December
Westhampton Beach, NY
- Average snowfall days in December: 2.3 days
The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in December
Westhampton Beach, NY
- Average sea temperature in December: 48.9°F
The best month for swimming (with the highest average sea temperature) is August (73.7°F).
The coldest month (with the lowest average sea temperature) is February (38°F).
Average daylight in December /
Average sunshine in December
Westhampton Beach, 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 months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Westhampton Beach, NY
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (12.6 days).
Average UV index in December
Westhampton Beach, 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
Westhampton Beach, NY
- Average cloud cover in December: 50
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in December
Westhampton Beach, 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).
Westhampton Beach, New York, USA
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