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
Hewlett Bay Park's progression into December involves a minor drop in the average high-temperature, slightly receding from a fresh 51.6°F (10.9°C) in November to a chilly 43.5°F (6.4°C). In Hewlett Bay Park, the nighttime temperature in December descends gently to an average of 36°F (2.2°C).Humidity
In December, the average relative humidity is 75%.Rainfall
In Hewlett Bay Park, in December, during 10.7 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. Throughout the year, there are 135.3 rainfall days, and 18.62" (473mm) of precipitation is accumulated.Snowfall
January through March, October through December are months with snowfall in Hewlett Bay Park. In Hewlett Bay Park, in December, snow falls for 2.8 days, with typically accumulated 0.59" (15mm) of snow. In Hewlett Bay Park, during the entire year, snow falls for 15.8 days and aggregates up to 2.95" (75mm) of snow.Ocean temperature
In December, the average ocean temperature is 48°F (8.9°C).Note: Swimming in 48°F (8.9°C) is deemed hazardous. Exposure to temperatures below 50°F (10°C) leads to immediate severe cold shock and hyperventilation.
Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Hewlett Bay Park.On the first day of December in Hewlett Bay Park, sunrise is at 6:59 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:37 pm EST.
Sunshine
In Hewlett Bay Park, the average sunshine in December is 5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. When the Sun is at its strongest around midday, find shade and limit exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in Hewlett Bay Park?
What is the average humidity in December in Hewlett Bay Park?
How much does it rain in Hewlett Bay Park in December?
How much does it snow in Hewlett Bay Park in December?
What is the water temperature in December in Hewlett Bay Park?
What is the month with the shortest days in Hewlett Bay Park?
How many hours of daylight does Hewlett Bay Park have in December?
When is the sunrise / sunset in December in Hewlett Bay Park?
How long on average sun shines in December in Hewlett Bay Park?
What is the month with the lowest UV index in Hewlett Bay Park?
What is the UV index intensity in December in Hewlett Bay Park?
Average temperature in December
Hewlett Bay Park, NY
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 36°F
The month with the highest average low temperature is August (71.1°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).
Average pressure in December
Hewlett Bay Park, 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
Hewlett Bay Park, NY
- Average wind speed in December: 11.9mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in December
Hewlett Bay Park, NY
- Average humidity in December: 75%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (72%).
Average rainfall in December
Hewlett Bay Park, NY
- Average rainfall in December: 1.65"
The wettest months (with the highest rainfall) are July and August (2.32").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in December
Hewlett Bay Park, NY
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Hewlett Bay Park, NY
- Average snowfall in December: 0.59"
The month with the highest snowfall is March (1.02").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in December
Hewlett Bay Park, NY
- Average snowfall days in December: 2.8 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in December
Hewlett Bay Park, 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
Hewlett Bay Park, 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: 5h and 0min
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
Hewlett Bay Park, NY
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in December
Hewlett Bay Park, 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
Hewlett Bay Park, NY
- Average cloud cover in December: 47
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Hewlett Bay Park, 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).
Hewlett Bay Park, New York, USA
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