January weather forecast
Wellfleet, MA

Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
°Celsius°Fahrenheit
Share

Contents

Weather in January

Starting off the year, January in Wellfleet, Massachusetts features low temperatures and high humidity, setting a chilly stage for local inhabitants. High levels of cloud cover contribute to the cold sensation, making it one of the gloomiest months. In terms of wind speed, gusts can reach an average of 26.1mph (42km/h), making this the windiest period of the year. Additionally, with peak temperatures of 38.7°F (3.7°C), January proves to be a month of indoor activities for most residents. After January, one can expect a slight rise in temperatures in the coming month of February.

Temperature

With its high average temperature of 38.7°F (3.7°C) and a low of 31.6°F (-0.2°C), January is regarded as the coldest month in Wellfleet.

Humidity

In January, the average relative humidity is 75%.

Rainfall

In Wellfleet, during January, the rain falls for 8.9 days and regularly aggregates up to 1.26" (32mm) of precipitation. Throughout the year, there are 136.1 rainfall days, and 17.24" (438mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Wellfleet are January through April, November and December. In Wellfleet, during January, snow falls for 6.1 days and regularly aggregates up to 0.91" (23mm) of snow. Throughout the year, there are 22.1 snowfall days, and 2.95" (75mm) of snow is accumulated.

Ocean temperature

In Wellfleet, the average seawater temperature in January is 41.5°F (5.3°C).
Note: Swimming in 41.5°F (5.3°C) feels unbearing at 55.4°F (13°C) and can be life-risking below 50°F (10°C), causing breathing issues and cold shock, depending on a person's capacity.

Daylight

The average length of the day in January in Wellfleet, Massachusetts, is 9h and 32min.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:19 pm. On the last day of January, sunrise is at 6:53 am and sunset at 4:53 pm EST.

Sunshine

The average sunshine in January in Wellfleet is 4.5h.

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 value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.
Note: The UV index of 2 in January translates into these instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
[Resources]

Frequently asked questions

What is the coldest month in Wellfleet?

In Wellfleet, January is the month with the lowest recorded average temperatures, measuring a high of 38.7°F (3.7°C) and a low of 31.6°F (-0.2°C).

How cold is January in Wellfleet?

During January, Wellfleet experiences an average high-temperature of 38.7°F (3.7°C) and a low-temperature of 31.6°F (-0.2°C).

What is the average humidity in January in Wellfleet?

In Wellfleet, Massachusetts, the average relative humidity in January is 75%.

How much does it rain in Wellfleet in January?

In Wellfleet, Massachusetts, in January, during 8.9 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

How many days does it snow in January in Wellfleet?

In January, it is snowing for 6.1 days. Throughout January, 0.91" (23mm) of snow is accumulated.

What is the ocean temperature in January in Wellfleet?

In January, the average ocean temperature in Wellfleet is 41.5°F (5.3°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 Wellfleet?

The average day length in January in Wellfleet, Massachusetts, is 9h and 32min.

When is the sunrise / sunset in January in Wellfleet?

On the first day of January, sunrise is at 7:07 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 4:53 pm EST.

How many hours of sunshine does Wellfleet have in January?

In Wellfleet, the average sunshine duration in January is 4.5h.

When is the lowest UV index in Wellfleet?

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

What is the UV index reading in January in Wellfleet?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
43.9°F 6.6°C
38.7°F 3.7°C
38.8°F 3.8°C
Average low temperature
37.4°F 3°C
31.6°F -0.2°C
31.6°F -0.2°C
Average pressure
30.02" 763mmHg
29.99" 762mmHg
29.98" 761mmHg
Average wind speed
18mph 29km/h
18.5mph 29.8km/h
18mph 29km/h
Average max. wind speed
19.1mph 30.7km/h
19.4mph 31.2km/h
19mph 30.6km/h
Average wind speed gusts
25.5mph 41km/h
26.1mph 42km/h
26.3mph 42.3km/h
Average humidity
75%
75%
75%
Average rainfall
1.57" 40mm
1.26" 32mm
1.18" 30mm
Average rainfall days
11.7
8.9
7.3
Average snowfall
0.51" 13mm
0.91" 23mm
0.94" 24mm
Average snowfall days
4.7
6.1
5.2
Average sea temperature
46.1°F 7.8°C
41.5°F 5.3°C
39.1°F 3.9°C
Average daylight
9h 1min
9h 3min
10h 4min
Average sunshine
4h 1min
4h 3min
4h 3min
Average sunshine days
13.1
13.3
13.3
Average UV index
2
2
2
Average cloud cover
55%
53%
54%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Wellfleet, MA

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

The warmest month (with the highest average high temperature) is August (71.1°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in January: 31.6°F

The month with the highest average low temperature is August (67.6°F).
The coldest months (with the lowest average low temperature) are January and February (31.6°F).

[Resources]

Average pressure in January
Wellfleet, MA

Average pressure in January - Wellfleet, MA
  • Average pressure in January: 29.99"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

[Resources]

Average wind speed in January
Wellfleet, MA

Average wind speed in January - Wellfleet, MA
  • Average wind speed in January: 18.5mph

The windiest month (with the highest average wind speed) is January (18.5mph).
The calmest months (with the lowest average wind speed) are July and August (11.6mph).

[Resources]

Average humidity in January
Wellfleet, MA

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

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (74%).

[Resources]

Average rainfall in January
Wellfleet, MA

Average rainfall in January - Wellfleet, MA
  • Average rainfall in January: 1.26"

The wettest month (with the highest rainfall) is October (2.17").
The driest months (with the least rainfall) are February and November (1.18").

[Resources]

Average rainfall days in January
Wellfleet, MA

Average rainfall days in January - Wellfleet, MA
  • Average rainfall days in January: 8.9 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (7.3 days).

[Resources]

Average snowfall in January
Wellfleet, MA

Average snowfall in January - Wellfleet, MA
  • Average snowfall in January: 0.91"

The month with the highest snowfall is February (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in January
Wellfleet, MA

Average snowfall days in January - Wellfleet, MA
  • Average snowfall days in January: 6.1 days

The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average sea temperature in January
Wellfleet, MA

Average sea temperature in January - Wellfleet, MA
  • Average sea temperature in January: 41.5°F

The best month for swimming (with the highest average sea temperature) is August (67.5°F).
The coldest month (with the lowest average sea temperature) is March (39°F).

[Resources]

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

Average daylight in January / Average sunshine in January - Wellfleet, MA
  • Average daylight in January: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in January: 4h and 3min

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 12min).

[Resources]

Average sunshine days in January
Wellfleet, MA

Average sunshine days in January - Wellfleet, MA
  • Average sunshine days in January: 13.3 days

The month with the most sunshine days is August (18.2 days).
The month with the least sunshine days is December (13.1 days).

[Resources]

Average UV index in January
Wellfleet, MA

Average UV index in January - Wellfleet, 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).

[Resources]

Average cloud cover in January
Wellfleet, MA

Average cloud cover in January - Wellfleet, MA
  • Average cloud cover in January: 53

The month with the most cloud cover is December (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 28).

[Resources]

Average visibility in January
Wellfleet, MA

Average visibility in January - Wellfleet, 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).

[Resources]

Wellfleet, Massachusetts, USA

Weather forecast for today
Weather forecast for tomorrow
10 days weather forecast
Climate data
1January
2February
3March
4April
5May
6June
7July
8August
9September
10October
11November
12December

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location