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
In Oak Bluffs, the beginning of December is marked by a marginally lowered average high-temperature, shifting from November's fresh 51.8°F (11°C) to a chilly 44.2°F (6.8°C). Oak Bluffs's December nights exhibit a subtle drop in temperature, averaging at a cold 36.9°F (2.7°C), closely aligned with the daytime highs.Humidity
In Oak Bluffs, the average relative humidity in December is 75%.Rainfall
In December, the rain falls for 7.9 days. Throughout December, 0.71" (18mm) of precipitation is accumulated. In Oak Bluffs, Massachusetts, during the entire year, the rain falls for 89.3 days and collects up to 6.14" (156mm) of precipitation.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, in the average 4.9 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 19.3 snowfall days, and 0.75" (19mm) of snow is accumulated.Ocean temperature
In Oak Bluffs, Massachusetts, in December, the average water temperature is 47.1°F (8.4°C).Note: Diving into 47.1°F (8.4°C) is practical below 50°F (10°C), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 55.4°F (13°C) feels ice-cold.
Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:49 am and sunset at 4:13 pm. On the last day of December, sunrise is at 7:08 am and sunset at 4:22 pm EST.
Sunshine
The average sunshine in December in Oak Bluffs, Massachusetts, is 4.7h.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 estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: In December, the UV index of 2 transforms into the following advice:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
How cold does it get in Oak Bluffs in December?
What is the average humidity in December in Oak Bluffs?
How many days does it rain in December in Oak Bluffs?
When does it start to snow in Oak Bluffs?
What is the water temperature in December in Oak Bluffs?
What is the month with the shortest days in Oak Bluffs?
What is the average length of the day in December in Oak Bluffs?
When are sunrise and sunset in December in Oak Bluffs?
How many hours of sunshine does Oak Bluffs have in December?
What are the months with the lowest UV index in Oak Bluffs?
What is the UV index reading in December in Oak Bluffs?
Average temperature in December
Oak Bluffs, MA
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is August (73.8°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in December: 36.9°F
The month with the highest average low temperature is August (68.9°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in December
Oak Bluffs, 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
Oak Bluffs, MA
- Average wind speed in December: 15.8mph
The windiest month (with the highest average wind speed) is January (16mph).
The calmest month (with the lowest average wind speed) is July (10.7mph).
Average humidity in December
Oak Bluffs, 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
Oak Bluffs, MA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is October (0.83").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in December
Oak Bluffs, MA
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is July (9.1 days).
The months with the least rainy days are September and November (5.9 days).
Average snowfall in December
Oak Bluffs, MA
- Average snowfall in December: 0.2"
The months with the highest snowfall are January and February (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Oak Bluffs, MA
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Oak Bluffs, MA
- Average sea temperature in December: 47.2°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).
Average daylight in December /
Average sunshine in December
Oak Bluffs, MA
- Average daylight in December: 9h and 1min
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 December: 4h and 4min
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 36min).
Average sunshine days in December
Oak Bluffs, MA
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is September (21.4 days).
The month with the least sunshine days is February (18.5 days).
Average UV index in December
Oak Bluffs, 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
Oak Bluffs, MA
- Average cloud cover in December: 50
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Oak Bluffs, 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).
Oak Bluffs, Massachusetts, USA
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