Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
West Dennis experiences a moderate temperature shift at the start of December, with average high-temperatures adjusting a bit from a cool 51.3°F (10.7°C) in November to a frosty 43.7°F (6.5°C). The nighttime temperature in West Dennis demonstrates a marginal decline, averaging at a wintry 36.9°F (2.7°C) during December.Humidity
In December, the average relative humidity is 75%.Rainfall
In West Dennis, in December, it is raining for 10.8 days, with typically 1.38" (35mm) of accumulated precipitation. In West Dennis, during the entire year, the rain falls for 129 days and collects up to 14.21" (361mm) of precipitation.Snowfall
Months with snowfall are January through April and December. December is the first month it typically snows. Throughout December, in the average 4.5 snowfall days, it receives 0.39" (10mm) of snow. In West Dennis, during the entire year, snow falls for 20.8 days and aggregates up to 2.6" (66mm) of snow.Ocean temperature
In December, the average ocean temperature in West Dennis is 46°F (7.8°C).Note: Beware when you're in 46°F (7.8°C) waters; 55.4°F (13°C) is chilling and anything below 50°F (10°C) could cause breathing hindrance and a sudden cold shock, given your physical condition.
Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 6:48 am and sunset at 4:11 pm. On the last day of December, in West Dennis, Massachusetts, sunrise is at 7:07 am and sunset at 4:20 pm EST.
Sunshine
February and December, with an average of 4.6h of sunshine, are months with the least sunshine in West Dennis, Massachusetts.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
Is it cold in West Dennis during December?
What is the average humidity in December in West Dennis?
How much does it rain in West Dennis in December?
When does it start to snow in West Dennis?
What is the ocean temperature in December in West Dennis?
What is the month with the shortest days in West Dennis?
What is the average length of the day in December in West Dennis?
When is the sunrise / sunset in December in West Dennis?
What is the month with the least sunshine in West Dennis?
How long on average sun shines in December in West Dennis?
What is the month with the lowest UV index in West Dennis?
What is the UV index reading in December in West Dennis?
Average temperature in December
West Dennis, MA
- Average high temperature in December: 43.7°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 December: 36.9°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 December
West Dennis, MA
- Average pressure in December: 30.03"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 December
West Dennis, MA
- Average wind speed in December: 16.4mph
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 December
West Dennis, MA
- Average humidity in December: 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 December
West Dennis, MA
- Average rainfall in December: 1.38"
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 December
West Dennis, MA
- Average rainfall days in December: 10.8 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 December
West Dennis, MA
- Average snowfall in December: 0.39"
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 December
West Dennis, MA
- Average snowfall days in December: 4.5 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 December
West Dennis, MA
- Average sea temperature in December: 46.1°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 December /
Average sunshine in December
West Dennis, MA
- Average daylight in December: 9h and 1min
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 December: 4h and 4min
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 December
West Dennis, MA
- Average sunshine days in December: 15.3 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 December
West Dennis, MA
- Average UV index in December: 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 December
West Dennis, MA
- Average cloud cover in December: 51
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 December
West Dennis, MA
- Average visibility in December: 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).
West Dennis, Massachusetts, USA
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