December weather forecast and climate
Westhampton Beach, NY

Weather in December

December, the first month of the winter, in Westhampton Beach, is still a chilly month, with average temperature varying between 38.1°F (3.4°C) and 45.3°F (7.4°C).

Temperature

In Westhampton Beach, the average high-temperature marginally drops, from a cool 52.7°F (11.5°C) in November, to a frosty 45.3°F (7.4°C). In December, the average low-temperature is 38.1°F (3.4°C).

Humidity

The average relative humidity in Westhampton Beach is 74%.

Rainfall

In Westhampton Beach, 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 in Westhampton Beach. Throughout December, in the average 2.3 snowfall days, it receives 0.79" (20mm) of snow. Throughout the year, there are 12.9 snowfall days, and 4.45" (113mm) of snow is accumulated.

Ocean temperature

In Westhampton Beach, the average seawater temperature is 48.9°F (9.4°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

December has the shortest days of the year in Westhampton Beach, New York, with an average of 9.3h of daylight.

Sunshine

February and December, with an average of 4.8h of sunshine, are months with the least sunshine.

UV index

Months with the lowest UV index in Westhampton Beach are January through March and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Westhampton Beach?

In Westhampton Beach, New York, in December, the average high-temperature is 45.3°F (7.4°C), and the average low-temperature is 38.1°F (3.4°C).

What is the average humidity in December in Westhampton Beach?

In Westhampton Beach, New York, the average relative humidity in December is 74%.

How many days does it rain in December in Westhampton Beach?

In December, the rain falls for 11 days. Throughout December, 2.95" (75mm) of precipitation is accumulated.

When does it start to snow in Westhampton Beach?

December is the first month it typically snows in Westhampton Beach, New York. Throughout December, in the average 2.3 snowfall days, it receives 0.79" (20mm) of snow.

What is the ocean temperature in December in Westhampton Beach?

In Westhampton Beach, in December, the average water temperature is 48.9°F (9.4°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the month with the shortest days in Westhampton Beach?

The month with the shortest days in Westhampton Beach, New York, is December, with an average of 9.3h of daylight.

What is the average length of the day in December in Westhampton Beach?

The average length of the day in December is 9.3h.

What is the month with the least sunshine in Westhampton Beach?

Months with the least sunshine in Westhampton Beach are February and December, with an average of 4.8h of sunshine.

How many hours of sunshine does Westhampton Beach have in December?

The average sunshine in December in Westhampton Beach, New York, is 4.8h.

What are the months with the lowest UV index in Westhampton Beach?

January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in Westhampton Beach.

What is the UV index reading in December in Westhampton Beach?

In December, the average daily maximum UV index in Westhampton Beach, New York, is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the UV radiation.

Average temperature in December
Westhampton Beach, NY

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

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).

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Average pressure in December
Westhampton Beach, NY

Average pressure in December - Westhampton Beach, NY
  • Average pressure in December: 30.06"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in December
Westhampton Beach, NY

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).

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Average humidity in December
Westhampton Beach, NY

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%).

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Average rainfall in December
Westhampton Beach, NY

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").

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Average rainfall days in December
Westhampton Beach, NY

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).

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Average snowfall in December
Westhampton Beach, NY

Average snowfall in December - Westhampton Beach, NY
  • Average snowfall in December: 0.79"

The month with the highest snowfall is March (1.54").
Months with the least snowfall are April, June, July, August, September, October and November (0").

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Average snowfall days in December
Westhampton Beach, NY

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).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in December
Westhampton Beach, NY

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).

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Average daylight in December /
Average sunshine in December
Westhampton Beach, NY

Average daylight in December / Average sunshine in December - Westhampton Beach, NY
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 4.8h

Months with the most sunshine are July and August (Average sunshine: 10.8h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

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Average sunshine days in December
Westhampton Beach, NY

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).

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Average UV index in December
Westhampton Beach, NY

Average UV index in December - Westhampton Beach, NY
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March and December (UV index 2).

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Average cloud cover in December
Westhampton Beach, NY

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).

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Average visibility in December
Westhampton Beach, NY

Average visibility in December - Westhampton Beach, NY
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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