December weather forecast and climate
Halesite, NY

The first month of the winter, December, is still a chilly month in Halesite, New York, with average temperature varying between 35.4°F (1.9°C) and 43.3°F (6.3°C).

Temperature

In Halesite, the average high-temperature in December slightly decreases, from a cool 51.4°F (10.8°C) in November, to a frosty 43.3°F (6.3°C). The average low-temperature, in December, is 35.4°F (1.9°C).

Humidity

In Halesite, New York, the average relative humidity is 74%.

Rainfall

In December, in Halesite, the rain falls for 11.5 days. Throughout December, 3.62" (92mm) of precipitation is accumulated. Throughout the year, there are 152.5 rainfall days, and 35.04" (890mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Halesite. In Halesite, during December, snow falls for 2.8 days and regularly aggregates up to 1.46" (37mm) of snow. In Halesite, during the entire year, snow falls for 15.5 days, and aggregates up to 5.71" (145mm) of snow.

Ocean temperature

In December, the average ocean 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

With an average of 9.3h of daylight, December has the shortest days of the year.

Sunshine

In December, the average sunshine is 4.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Halesite. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to the UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Halesite?

In Halesite, in December, the average high-temperature is 43.3°F (6.3°C), and the average low-temperature is 35.4°F (1.9°C).

What is the average humidity in December in Halesite?

The average relative humidity in December is 74%.

How many days does it rain in December in Halesite?

In Halesite, New York, in December, during 11.5 rainfall days, 3.62" (92mm) of precipitation is typically accumulated.

How much does it snow in Halesite in December?

In Halesite, in December, snow falls for 2.8 days, with typically accumulated 1.46" (37mm) of snow.

What is the ocean temperature in December in Halesite?

In December, the average ocean temperature in Halesite, New York, is 48.9°F (9.4°C). Swimming in 48.9°F (9.4°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the month with the shortest days in Halesite?

December has the shortest days of the year, with an average of 9.3h of daylight.

How many hours of daylight does Halesite have in December?

In December, the average length of the day in Halesite, New York, is 9.3h.

How long on average sun shines in December in Halesite?

In December, the average sunshine in Halesite is 4.9h.

What is the month with the lowest UV index in Halesite?

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

What is the UV index intensity in December in Halesite?

In Halesite, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from the exposure to the Sun's UV rays.
Average temperature in December - Halesite, NY
  • Average high temperature in December: 6.3°C

The warmest month (with the highest average high temperature) is July (26.7°C).
The month with the lowest average high temperature is January (2.8°C).

  • Average low temperature in December: 1.9°C

The month with the highest average low temperature is July (21.8°C).
The coldest month (with the lowest average low temperature) is January (-1.9°C).

Average pressure in December - Halesite, NY
  • Average pressure in December: 1018.1mbar

The month with the highest atmospheric pressure is November (1019.1mbar).
The month with the lowest atmospheric pressure is June (1013.6mbar).

Average wind speed in December - Halesite, NY
  • Average wind speed in December: 18.9km/h

The windiest month (with the highest average wind speed) is January (19.6km/h).
The calmest month (with the lowest average wind speed) is July (12.5km/h).

Average humidity in December - Halesite, NY
  • Average humidity in December: 74%

Months with the highest relative humidity are May and June (76%).
The month with the lowest relative humidity is November (71%).

Average rainfall in December - Halesite, NY
  • Average rainfall in December: 92mm

The wettest month (with the highest rainfall) is July (104mm).
The driest month (with the least rainfall) is January (53mm).

Average rainfall days in December - Halesite, NY
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.1 days).

Average snowfall in December - Halesite, NY
  • Average snowfall in December: 37mm

The month with the highest snowfall is March (45mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in December - Halesite, NY
  • Average snowfall days in December: 2.8 days

The month with the highest number of snowfall days is February (4.9 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in December - Halesite, NY
  • Average sea temperature in December: 9.4°C

The best month for swimming (with the highest average sea temperature) is August (23.3°C).
The coldest month (with the lowest average sea temperature) is February (4.3°C).

Average daylight in December / Average sunshine in December - Halesite, 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: 4.9h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average sunshine days in December - Halesite, NY
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.4 days).

Average UV index in December - Halesite, 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, November and December (UV index 2).

Average cloud cover in December - Halesite, NY
  • Average cloud cover in December: 48

The month with the most cloud cover is December (Cloud cover 48).
Months with the least cloud cover are July and August (Cloud cover 29).

Average visibility in December - Halesite, NY
  • Average visibility in December: 9km

Months with the highest visibility are June, July, August, September, October and November (10km).
Months with the lowest visibility are January, February, March, April, May and December (9km).