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 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
Seal Harbor observes a minor decrease in the average high-temperature with the arrival of December, falling from November's chilly 44.8°F (7.1°C) to an icy 35.1°F (1.7°C). During December, Seal Harbor witnesses a consistent average low-temperature of 25.7°F (-3.5°C).Humidity
In December, the average relative humidity in Seal Harbor is 78%.Rainfall
December is the month with the most rainfall. Rain falls for 11.5 days and accumulates 3.94" (100mm) of precipitation.Snowfall
Months with snowfall in Seal Harbor are January through May, October through December. In December, in Seal Harbor, it is snowing for 7.9 days. Throughout December, 3.78" (96mm) of snow is accumulated. In Seal Harbor, during the entire year, snow falls for 48.1 days and aggregates up to 23.82" (605mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 6:49 am and sunset at 3:55 pm. On the last day of December, sunrise is at 7:08 am and sunset at 4:03 pm EST.
Sunshine
In Seal Harbor, the average sunshine in December is 4.4h.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 estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the UV index of 2 transforms into the following advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is it in Seal Harbor in December?
What is the average humidity in December in Seal Harbor?
What is the wettest month in Seal Harbor?
How much does it rain in Seal Harbor in December?
How much does it snow in Seal Harbor in December?
What is the month with the shortest days in Seal Harbor?
How many hours of daylight does Seal Harbor have in December?
When is the sunrise / sunset in December in Seal Harbor?
How long on average sun shines in December in Seal Harbor?
What are the months with the lowest UV index in Seal Harbor?
What is the UV index reading in December in Seal Harbor?
Average temperature in December
Seal Harbor, ME
- Average high temperature in December: 35.1°F
The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Seal Harbor, 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
Seal Harbor, ME
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in December
Seal Harbor, ME
- Average humidity in December: 78%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Seal Harbor, ME
- Average rainfall in December: 3.94"
The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (1.57").
Average rainfall days in December
Seal Harbor, ME
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is April (15.5 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in December
Seal Harbor, ME
- Average snowfall in December: 3.78"
The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Seal Harbor, ME
- Average snowfall days in December: 7.9 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Seal Harbor, ME
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in December
Seal Harbor, ME
- Average sunshine days in December: 14.1 days
The month with the most sunshine days is August (18.7 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in December
Seal Harbor, ME
- Average UV index in December: 2
The months with the highest UV index are June, 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
Seal Harbor, ME
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in December
Seal Harbor, ME
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Seal Harbor, Maine, USA
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