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
The average high-temperature drops in December, from November's frosty 45.5°F (7.5°C) to a cold 35.2°F (1.8°C). Boothbay Harbor witnesses an average low-temperature of 25.3°F (-3.7°C) throughout the month of December.Humidity
The average relative humidity in December in Boothbay Harbor is 78%.Rainfall
The month with the most rainfall is December, when the rain falls for 10.8 days and typically aggregates up to 3.5" (89mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In December, in Boothbay Harbor, it is snowing for 7 days. Throughout December, 3.39" (86mm) of snow is accumulated. In Boothbay Harbor, during the entire year, snow falls for 40 days and aggregates up to 20.08" (510mm) of snow.Ocean temperature
In Boothbay Harbor, in December, the average water temperature is 45.3°F (7.4°C).Note: It is risky to swim in 45.3°F (7.4°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation.
Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Boothbay Harbor.On the first day of December in Boothbay Harbor, sunrise is at 6:53 am and sunset at 4:02 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:11 pm EST.
Sunshine
February and December, with an average of 4.6h of sunshine, are months with the least sunshine.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 of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
How cold is December in Boothbay Harbor?
What is the average humidity in December in Boothbay Harbor?
What is the wettest month in Boothbay Harbor?
How many days does it rain in December in Boothbay Harbor?
How much does it snow in Boothbay Harbor in December?
What is the ocean temperature in December in Boothbay Harbor?
What is the month with the shortest days in Boothbay Harbor?
How many hours of daylight does Boothbay Harbor have in December?
When are sunrise and sunset in December in Boothbay Harbor?
What are the months with the least sunshine in Boothbay Harbor?
How many hours of sunshine does Boothbay Harbor have in December?
What are the months with the lowest UV index in Boothbay Harbor?
What is the UV index reading in December in Boothbay Harbor?
Average temperature in December
Boothbay Harbor, ME
- Average high temperature in December: 35.2°F
The warmest months (with the highest average high temperature) are July and August (74.1°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 25.3°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Boothbay Harbor, ME
- Average pressure in December: 30.01"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Boothbay Harbor, ME
- Average wind speed in December: 10mph
The windiest months (with the highest average wind speed) are January and March (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Boothbay Harbor, ME
- Average humidity in December: 78%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Boothbay Harbor, ME
- Average rainfall in December: 3.5"
The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in December
Boothbay Harbor, ME
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is April (15.1 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in December
Boothbay Harbor, ME
- Average snowfall in December: 3.39"
The month with the highest snowfall is January (5.28").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Boothbay Harbor, ME
- Average snowfall days in December: 7 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Boothbay Harbor, ME
- Average sea temperature in December: 45.4°F
The best month for swimming (with the highest average sea temperature) is August (62.2°F).
The coldest month (with the lowest average sea temperature) is March (37.9°F).
Average daylight in December /
Average sunshine in December
Boothbay Harbor, 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 4min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in December
Boothbay Harbor, ME
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is April (11.7 days).
Average UV index in December
Boothbay Harbor, ME
- Average UV index in December: 2
The month with the highest UV index is July (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
Boothbay Harbor, ME
- Average cloud cover in December: 51
The months with the most cloud cover are February and March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Boothbay Harbor, ME
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Boothbay Harbor, Maine, USA
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