January weather forecast
East Hampton, NY

The very tall Montauk Point Lighthouse stands high on a hilly spot overlooking the rocky and pebbly shores of East Hampton in Long Island, New York
The very tall Montauk Point Lighthouse stands high on a hilly spot overlooking the rocky and pebbly shores of East Hampton in Long Island, New York

Weather in January

January, like December, in East Hampton, New York, is a wintry winter month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 38.8°F (3.8°C).

Temperature

With an average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 31.1°F (-0.5°C), January is the coldest month.

Humidity

The average relative humidity in January in East Hampton is 73%.

Rainfall

In East Hampton, during January, the rain falls for 8.3 days and regularly aggregates up to 2.28" (58mm) of precipitation. Throughout the year, in East Hampton, New York, there are 148 rainfall days, and 33.07" (840mm) of precipitation is accumulated.

Snowfall

Months with snowfall in East Hampton are January through May, November and December. In East Hampton, during January, snow falls for 3.9 days and regularly aggregates up to 1.54" (39mm) of snow. In East Hampton, New York, during the entire year, snow falls for 12.6 days and aggregates up to 5.94" (151mm) of snow.

Ocean temperature

In East Hampton, the average seawater temperature in January is 44.6°F (7°C).
Note: Swimming in 44.6°F (7°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in January is 9h and 38min.
On the first day of the month, sunrise is at 7:13 am and sunset at 4:31 pm. On the last day of January, in East Hampton, sunrise is at 6:59 am and sunset at 5:04 pm EST.

Sunshine

In East Hampton, the average sunshine in January is 4.9h.

UV index

January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in East Hampton. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in East Hampton?

January is the coldest month in East Hampton, New York, with an average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 31.1°F (-0.5°C).

What is the average humidity in January in East Hampton?

In January, the average relative humidity in East Hampton, New York, is 73%.

How much does it rain in East Hampton in January?

In January, in East Hampton, the rain falls for 8.3 days. Throughout January, 2.28" (58mm) of precipitation is accumulated.

How much does it snow in East Hampton in January?

In East Hampton, in January, snow falls for 3.9 days, with typically accumulated 1.54" (39mm) of snow.

What is the ocean temperature in January in East Hampton?

In East Hampton, New York, in January, the average water temperature is 44.6°F (7°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.

How many hours of daylight does East Hampton have in January?

In January, the average day length in East Hampton, New York, is 9h and 38min.

When are sunrise and sunset in January in East Hampton?

On the first day of January, sunrise is at 7:13 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 5:04 pm EST.

How long on average sun shines in January in East Hampton?

In East Hampton, New York, the average sunshine duration in January is 4.9h.

What are the months with the lowest UV index in East Hampton?

January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in East Hampton, New York.

What is the UV index intensity in January in East Hampton?

In East Hampton, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sea temperature
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
East Hampton, NY

Average temperature in January - East Hampton, NY
  • Average high temperature in January: 38.8°F

The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in January: 31.1°F

The month with the highest average low temperature is 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 January
East Hampton, NY

Average pressure in January - East Hampton, NY
  • Average pressure in January: 30.03"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
East Hampton, NY

Average wind speed in January - East Hampton, NY
  • Average wind speed in January: 16.4mph

The windiest month (with the highest average wind speed) is January (16.4mph).
The calmest month (with the lowest average wind speed) is July (10.8mph).

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Average humidity in January
East Hampton, NY

Average humidity in January - East Hampton, NY
  • Average humidity in January: 73%

The months with the highest relative humidity are May and June (82%).
The month with the lowest relative humidity is November (72%).

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Average rainfall in January
East Hampton, NY

Average rainfall in January - East Hampton, NY
  • Average rainfall in January: 2.28"

The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is September (2.09").

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Average rainfall days in January
East Hampton, NY

Average rainfall days in January - East Hampton, NY
  • Average rainfall days in January: 8.3 days

The months with the highest number of rainy days are July and August (15.5 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in January
East Hampton, NY

Average snowfall in January - East Hampton, NY
  • Average snowfall in January: 1.54"

The month with the highest snowfall is March (1.97").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
East Hampton, NY

Average snowfall days in January - East Hampton, NY
  • Average snowfall days in January: 3.9 days

The month with the highest number of snowfall days is January (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 January
East Hampton, NY

Average sea temperature in January - East Hampton, NY
  • Average sea temperature in January: 45°F

The best month for swimming (with the highest average sea temperature) is August (72°F).
The coldest months (with the lowest average sea temperature) are February and March (41°F).

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Average daylight in January /
Average sunshine in January
East Hampton, NY

Average daylight in January / Average sunshine in January - East Hampton, NY
  • Average daylight in January: 9h and 38min

The month with the longest days is June (Average daylight: 15h and 4min).
The month with the shortest days is December (Average daylight: 9h and 17min).

  • Average sunshine in January: 4h and 54min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

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Average sunshine days in January
East Hampton, NY

Average sunshine days in January - East Hampton, NY
  • Average sunshine days in January: 16.8 days

The month with the most sunshine days is November (18.4 days).
The months with the least sunshine days are July and August (13.3 days).

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Average UV index in January
East Hampton, NY

Average UV index in January - East Hampton, NY
  • Average UV index in January: 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 January
East Hampton, NY

Average cloud cover in January - East Hampton, NY
  • Average cloud cover in January: 48

The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in January
East Hampton, NY

Average visibility in January - East Hampton, NY
  • Average visibility in January: 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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