Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Temperature records mark January as the coldest month, with highs averaging 38.5°F (3.6°C) and lows at 30.6°F (-0.8°C).Humidity
In January, the average relative humidity in East Dennis is 75%.Rainfall
In East Dennis, during January, the rain falls for 8.4 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, there are 129 rainfall days, and 14.21" (361mm) of precipitation is accumulated.Snowfall
January through April and December are months with snowfall. The month with the most snowfall is January, when snow falls for 6.4 days and typically aggregates up to 0.87" (22mm) of snow.Ocean temperature
In East Dennis, the average seawater temperature in January is 41.5°F (5.3°C).Note: Swimming in 41.5°F (5.3°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.
Daylight
In January, the average length of the day is 9h and 34min.On the first day of the month, sunrise is at 7:07 am and sunset at 4:20 pm. On the last day of January, in East Dennis, sunrise is at 6:53 am and sunset at 4:54 pm EST.
Sunshine
In East Dennis, Massachusetts, the average sunshine in January is 4.8h.UV index
The months with the lowest UV index in East Dennis, Massachusetts, are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In January, the maximum UV index of 2 transforms into these 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. To protect against the Sun's most potent rays, avoid direct exposure around midday. Boost your sun resistance with garments that are densely woven yet spacious. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
What month is the coldest in East Dennis?
How cold is January in East Dennis?
What is the average humidity in January in East Dennis?
How many days does it rain in January in East Dennis?
When does it snow the most in East Dennis?
How many days does it snow in January in East Dennis?
How cold is the water in January in East Dennis?
How many hours of daylight does East Dennis have in January?
When are sunrise and sunset in January in East Dennis?
How long on average sun shines in January in East Dennis?
What are the months with the lowest UV index in East Dennis?
How high is the UV index in January in East Dennis?
Average temperature in January
East Dennis, MA
- Average high temperature in January: 38.5°F
The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in January: 30.6°F
The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in January
East Dennis, 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 (29.93"Hg).
Average wind speed in January
East Dennis, MA
- Average wind speed in January: 16.8mph
The windiest month (with the highest average wind speed) is January (16.8mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).
Average humidity in January
East Dennis, MA
- Average humidity in January: 75%
The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (74%).
Average rainfall in January
East Dennis, MA
- Average rainfall in January: 1.06"
The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is August (0.94").
Average rainfall days in January
East Dennis, MA
- Average rainfall days in January: 8.4 days
The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in January
East Dennis, MA
- Average snowfall in January: 0.87"
The month with the highest snowfall is January (0.87").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in January
East Dennis, MA
- Average snowfall days in January: 6.4 days
The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in January
East Dennis, 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).
Average daylight in January /
Average sunshine in January
East Dennis, MA
- Average daylight in January: 9h and 4min
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 5min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in January
East Dennis, MA
- Average sunshine days in January: 15.4 days
The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (14.3 days).
Average UV index in January
East Dennis, 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).
Average cloud cover in January
East Dennis, MA
- 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).
Average visibility in January
East Dennis, 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).
East Dennis, Massachusetts, USA
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