December weather forecast
Westhampton Beach, NY

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Weather in December

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

Temperature

As November shifts into December, a minor alteration in temperatures is observed, with average highs reducing from a cool 52.7°F (11.5°C) to a chilly 45.3°F (7.4°C). Night temperatures during December experience a slight downturn, averaging a cold 38.1°F (3.4°C).

Humidity

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

Rainfall

In Westhampton Beach, New York, in December, during 11 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. In Westhampton Beach, during the entire year, the rain falls for 148 days and collects up to 29.76" (756mm) of precipitation.

Snowfall

Months with snowfall in Westhampton Beach 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, the average seawater temperature in December 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

With an average of 9h and 18min of daylight, December has the shortest days of the year in Westhampton Beach.
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

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

UV index

The 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 minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high daily UV index of 2 during December translates into the following directions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Enhance your sun protection with tightly woven, yet airy clothing. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

What are December temperatures in Westhampton Beach?

The average high-temperature, in December, in Westhampton Beach, is 45.3°F (7.4°C), while the average low-temperature is 38.1°F (3.4°C).

What is the average humidity in December in Westhampton Beach?

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

How much does it rain in Westhampton Beach in December?

In Westhampton Beach, New York, during December, the rain falls for 11 days and regularly aggregates up to 2.95" (75mm) of precipitation.

When does it start to snow in Westhampton Beach?

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.

How cold is the water in December in Westhampton Beach?

In Westhampton Beach, New York, the average seawater temperature in December 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 is December, with an average of 9h and 18min of daylight.

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

In Westhampton Beach, the average day length in December is 9h and 18min.

When is the sunrise / sunset in December in Westhampton Beach?

On the first day of December in Westhampton Beach, sunrise is at 6:56 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:33 pm EST.

What are the months with the least sunshine in Westhampton Beach?

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

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

In Westhampton Beach, New York, the average sunshine duration in December is 4.8h.

When is the lowest UV index in Westhampton Beach?

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

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

In Westhampton Beach, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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

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).

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Average pressure in December
Westhampton Beach, NY

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).

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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").
The 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).
The 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: 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).

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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

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).

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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

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).

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Westhampton Beach, New York, USA

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