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 gentle decline in Vinalhaven's average high-temperature, easing from a chilly 47.3°F (8.5°C) in November to a cold 39.7°F (4.3°C). Recording a slight decline in temperature during the nights, Vinalhaven's December temperatures average at 32.4°F (0.2°C).Humidity
The average relative humidity in December in Vinalhaven is 77%.Rainfall
In Vinalhaven, in December, during 9 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Vinalhaven, during the entire year, the rain falls for 109.9 days and collects up to 9.72" (247mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Vinalhaven. In Vinalhaven, in December, snow falls for 7.3 days, with typically accumulated 0.67" (17mm) of snow. In Vinalhaven, during the entire year, snow falls for 30.9 days and aggregates up to 2.91" (74mm) of snow.Ocean temperature
In December, the average ocean temperature is 45.5°F (7.5°C).Note: Swimming in 45.5°F (7.5°C) at temperatures under 50°F (10°C) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 55.4°F (13°C) feels frosty.
Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:50 am and sunset at 3:58 pm. On the last day of December, sunrise is at 7:10 am and sunset at 4:07 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 4.3h 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. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in Vinalhaven?
What is the average humidity in December in Vinalhaven?
How many days does it rain in December in Vinalhaven?
How many days does it snow in December in Vinalhaven?
What is the ocean temperature in December in Vinalhaven?
What is the month with the shortest days in Vinalhaven?
What is the average length of the day in December in Vinalhaven?
When are sunrise and sunset in December in Vinalhaven?
What is the month with the least sunshine in Vinalhaven?
How long on average sun shines in December in Vinalhaven?
What are the months with the lowest UV index in Vinalhaven?
How high is the UV index in December in Vinalhaven?
Average temperature in December
Vinalhaven, ME
- Average high temperature in December: 39.7°F
The warmest month (with the highest average high temperature) is August (65.7°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is August (61.7°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Vinalhaven, ME
- Average pressure in December: 29.99"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Vinalhaven, ME
- Average wind speed in December: 18.8mph
The windiest month (with the highest average wind speed) is January (19.4mph).
The calmest months (with the lowest average wind speed) are July and August (10.3mph).
Average humidity in December
Vinalhaven, ME
- Average humidity in December: 77%
The months with the highest relative humidity are June, July and August (86%).
The month with the lowest relative humidity is November (74%).
Average rainfall in December
Vinalhaven, ME
- Average rainfall in December: 0.91"
The wettest months (with the highest rainfall) are October and November (1.02").
The driest months (with the least rainfall) are August and September (0.55").
Average rainfall days in December
Vinalhaven, ME
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is July (11.6 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in December
Vinalhaven, ME
- Average snowfall in December: 0.67"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Vinalhaven, ME
- Average snowfall days in December: 7.3 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in December
Vinalhaven, ME
- Average sea temperature in December: 45.6°F
The best month for swimming (with the highest average sea temperature) is August (58.6°F).
The coldest month (with the lowest average sea temperature) is March (38.2°F).
Average daylight in December /
Average sunshine in December
Vinalhaven, ME
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in December
Vinalhaven, ME
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is August (21.2 days).
The month with the least sunshine days is February (13.5 days).
Average UV index in December
Vinalhaven, ME
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Vinalhaven, ME
- Average cloud cover in December: 54
The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Vinalhaven, ME
- 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).
Vinalhaven, Maine, USA
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