January weather forecast
Edgartown, MA

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Classy and luxurious houses right on the harbor in Edgartown, Massachusetts, with long piers onto the water
Classy and luxurious houses right on the harbor in Edgartown, Massachusetts, with long piers onto the water

Weather in January

The year kicks off in Edgartown with temperatures dipping to a low of 30.6°F (-0.8°C) and only as high as 38.7°F (3.7°C), making it a chilly start to the year. The town's landscape is typically white this month as it records snowfall of 0.94" (24mm) over an average of 5.3 days. The winds in January add to the cold atmosphere, blowing at a brisk pace. The sea temperature hovers in the low 40s°F, not conducive for any water-based activities. Despite the snow and cold, the scenery can often be stunning, especially on rare sunny days.

Temperature

January is the month that records the lowest temperatures, with averages ranging from a high of 38.7°F (3.7°C) to a low of 30.6°F (-0.8°C).

Humidity

The average relative humidity in January in Edgartown is 75%.

Rainfall

In Edgartown, during January, the rain falls for 9 days and regularly aggregates up to 2.09" (53mm) of precipitation. Throughout the year, there are 146.4 rainfall days, and 25.47" (647mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March and December. In Edgartown, during January, snow falls for 5.3 days and regularly aggregates up to 0.94" (24mm) of snow. Throughout the year, in Edgartown, there are 18.3 snowfall days, and 3.94" (100mm) of snow is accumulated.

Ocean temperature

In Edgartown, in January, the average water temperature is 41.4°F (5.2°C).
Note: Dipping into 41.4°F (5.2°C) below 50°F (10°C) needs protective wear, or you'd face cold shock and breathing issues swiftly. Meanwhile, a slight swim around 55.4°F (13°C) feels cold to the bone.

Daylight

In January, the average length of the day in Edgartown is 9h and 35min.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:22 pm. On the last day of January, in Edgartown, sunrise is at 6:54 am and sunset at 4:56 pm EST.

Sunshine

In January, the average sunshine in Edgartown is 5h.

UV index

The months with the lowest UV index in Edgartown are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index, 2 during January, leads to the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What is the coldest time of year in Edgartown?

In Edgartown, January is the month with the lowest recorded average temperatures, measuring a high of 38.7°F (3.7°C) and a low of 30.6°F (-0.8°C).

How cold does it get in Edgartown in January?

January temperatures in Edgartown, Massachusetts, vary between a high-temperature of 38.7°F (3.7°C) and a low-temperature of 30.6°F (-0.8°C).

What is the average humidity in January in Edgartown?

The average relative humidity in January in Edgartown, Massachusetts, is 75%.

How many days does it rain in January in Edgartown?

In January, in Edgartown, the rain falls for 9 days. Throughout January, 2.09" (53mm) of precipitation is accumulated.

How many days does it snow in January in Edgartown?

In January, it is snowing for 5.3 days. Throughout January, 0.94" (24mm) of snow is accumulated.

What is the ocean temperature in January in Edgartown?

In Edgartown, in January, the average water temperature is 41.4°F (5.2°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 average length of the day in January in Edgartown?

In Edgartown, the average day length in January is 9h and 35min.

When is the sunrise / sunset in January in Edgartown?

In January, on the first day of the month, sunrise is at 7:08 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 4:56 pm EST.

How many hours of sunshine does Edgartown have in January?

In January, the average sunshine duration in Edgartown, Massachusetts, is 5h.

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

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

What is the UV index intensity in January in Edgartown?

The average daily maximum UV index in January in Edgartown is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
44.4°F 6.9°C
38.7°F 3.7°C
39°F 3.9°C
Average low temperature
36.9°F 2.7°C
30.6°F -0.8°C
30.9°F -0.6°C
Average pressure
30.03" 763mmHg
30" 762mmHg
29.99" 762mmHg
Average wind speed
15.8mph 25.4km/h
16.2mph 26.1km/h
15.7mph 25.3km/h
Average max. wind speed
17mph 27.4km/h
17.1mph 27.5km/h
16.5mph 26.6km/h
Average wind speed gusts
22.9mph 36.9km/h
23.5mph 37.8km/h
23.7mph 38.1km/h
Average humidity
75%
75%
75%
Average rainfall
2.56" 65mm
2.09" 53mm
1.77" 45mm
Average rainfall days
11.7
9
8.6
Average snowfall
0.67" 17mm
0.94" 24mm
1.14" 29mm
Average snowfall days
4.6
5.3
3.8
Average sea temperature
47.2°F 8.4°C
41.2°F 5.1°C
37.9°F 3.3°C
Average daylight
9h 1min
9h 4min
10h 4min
Average sunshine
4h 5min
5h 0min
4h 4min
Average sunshine days
15.5
15.1
14.9
Average UV index
2
2
2
Average cloud cover
50%
47%
49%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Edgartown, MA

Average temperature in January - Edgartown, MA
  • Average high temperature in January: 38.7°F

The warmest month (with the highest average high temperature) is August (73.9°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in January: 30.6°F

The month with the highest average low temperature is August (69.4°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

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Average pressure in January
Edgartown, MA

Average pressure in January - Edgartown, MA
  • Average pressure in January: 30"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in January
Edgartown, MA

Average wind speed in January - Edgartown, MA
  • Average wind speed in January: 16.2mph

The windiest month (with the highest average wind speed) is January (16.2mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).

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Average humidity in January
Edgartown, MA

Average humidity in January - Edgartown, MA
  • Average humidity in January: 75%

The months with the highest relative humidity are May, June and July (83%).
The month with the lowest relative humidity is November (74%).

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Average rainfall in January
Edgartown, MA

Average rainfall in January - Edgartown, MA
  • Average rainfall in January: 2.09"

The wettest month (with the highest rainfall) is October (3.07").
The driest months (with the least rainfall) are August and November (1.73").

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Average rainfall days in January
Edgartown, MA

Average rainfall days in January - Edgartown, MA
  • Average rainfall days in January: 9 days

The month with the highest number of rainy days is April (14.5 days).
The month with the least rainy days is February (8.6 days).

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Average snowfall in January
Edgartown, MA

Average snowfall in January - Edgartown, MA
  • Average snowfall in January: 0.94"

The month with the highest snowfall is March (1.18").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in January
Edgartown, MA

Average snowfall days in January - Edgartown, MA
  • Average snowfall days in January: 5.3 days

The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in January
Edgartown, MA

Average sea temperature in January - Edgartown, MA
  • Average sea temperature in January: 41.2°F

The best month for swimming (with the highest average sea temperature) is August (68.5°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).

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Average daylight in January /
Average sunshine in January
Edgartown, MA

Average daylight in January / Average sunshine in January - Edgartown, MA
  • Average daylight in January: 9h and 4min

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 12min).

  • Average sunshine in January: 5h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in January
Edgartown, MA

Average sunshine days in January - Edgartown, MA
  • Average sunshine days in January: 15.1 days

The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is April (13.5 days).

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Average UV index in January
Edgartown, MA

Average UV index in January - Edgartown, MA
  • Average UV index in January: 2

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

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Average cloud cover in January
Edgartown, MA

Average cloud cover in January - Edgartown, MA
  • Average cloud cover in January: 47

The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in January
Edgartown, MA

Average visibility in January - Edgartown, MA
  • 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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Edgartown, Massachusetts, USA

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