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
December signifies a minor drop in average high-temperature, transitioning from a cool 51.1°F (10.6°C) in November to a chilly 43.5°F (6.4°C). Barnstable in December observes a slight diminution in temperature from daily highs, recording a low-temperature average of 36.7°F (2.6°C).Humidity
The average relative humidity in December is 75%.Rainfall
In Barnstable, during December, the rain falls for 11 days and regularly aggregates up to 1.38" (35mm) of precipitation. In Barnstable, during the entire year, the rain falls for 129.6 days and collects up to 13.94" (354mm) of precipitation.Snowfall
Months with snowfall in Barnstable, Massachusetts, are January through April and December. December is the first month it typically snows in Barnstable. Throughout December, in the average 4.2 snowfall days, it receives 0.43" (11mm) of snow. In Barnstable, during the entire year, snow falls for 21.6 days and aggregates up to 2.17" (55mm) of snow.Ocean temperature
In December, the average ocean temperature 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
The month with the shortest days in Barnstable is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:49 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:20 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 4.6h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Barnstable. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the UV index of 2 transforms into the following advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
How cold is December in Barnstable?
What is the average humidity in December in Barnstable?
How much does it rain in Barnstable in December?
When does it start to snow in Barnstable?
What is the water temperature in December in Barnstable?
What is the month with the shortest days in Barnstable?
What is the average length of the day in December in Barnstable?
When are sunrise and sunset in December in Barnstable?
What is the month with the least sunshine in Barnstable?
How many hours of sunshine does Barnstable have in December?
When is the lowest UV index in Barnstable?
What is the UV index intensity in December in Barnstable?
Average temperature in December
Barnstable, MA
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is August (72.5°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in December: 36.7°F
The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in December
Barnstable, 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
Barnstable, MA
- Average wind speed in December: 15.8mph
The windiest month (with the highest average wind speed) is January (16.4mph).
The calmest month (with the lowest average wind speed) is August (10.4mph).
Average humidity in December
Barnstable, MA
- Average humidity in December: 75%
The months with the highest relative humidity are May, June and July (83%).
The month with the lowest relative humidity is November (74%).
Average rainfall in December
Barnstable, MA
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is October (1.89").
The driest month (with the least rainfall) is August (0.94").
Average rainfall days in December
Barnstable, MA
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in December
Barnstable, MA
- Average snowfall in December: 0.43"
The months with the highest snowfall are January and February (0.63").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in December
Barnstable, MA
- Average snowfall days in December: 4.2 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in December
Barnstable, 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
Barnstable, 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 month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in December
Barnstable, MA
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is September (18.5 days).
The month with the least sunshine days is February (14.8 days).
Average UV index in December
Barnstable, 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
Barnstable, MA
- Average cloud cover in December: 50
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Barnstable, 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).
Barnstable, Massachusetts, USA
Weather forecast for your location
2. Allow the app to use your location
