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 arrival of December corresponds with a reduction in the average high-temperature, down from November's chilly 46.6°F (8.1°C) to a wintry 37°F (2.8°C). In York Harbor, the December nights cool down to an average low of 27.5°F (-2.5°C).Humidity
In December, the average relative humidity in York Harbor is 78%.Rainfall
The months with the most rainfall are June and December, with an average 2.13" (54mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In York Harbor, in December, snow falls for 5.4 days, with typically accumulated 3.27" (83mm) of snow. In York Harbor, during the entire year, snow falls for 28.5 days and aggregates up to 14.25" (362mm) of snow.Ocean temperature
In York Harbor, in December, the average water temperature is 45.9°F (7.7°C).Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.
Daylight
December has the shortest days of the year in York Harbor, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 6:55 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:17 pm EST.
Sunshine
February and December, with an average of 4.9h 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 threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in York Harbor in December?
What is the average humidity in December in York Harbor?
What is the rainiest month in York Harbor?
How many days does it rain in December in York Harbor?
How many days does it snow in December in York Harbor?
What is the water temperature in December in York Harbor?
What is the month with the shortest days in York Harbor?
How many hours of daylight does York Harbor have in December?
What time are sunrise and sunset in December in York Harbor?
What are the months with the least sunshine in York Harbor?
How many hours of sunshine does York Harbor have in December?
What is the month with the lowest UV index in York Harbor?
How high is the UV index in December in York Harbor?
Average temperature in December
York Harbor, ME
- Average high temperature in December: 37°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
York Harbor, ME
- 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 (29.92"Hg).
Average wind speed in December
York Harbor, ME
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is January (11.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in December
York Harbor, ME
- Average humidity in December: 78%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are April and November (75%).
Average rainfall in December
York Harbor, ME
- Average rainfall in December: 2.13"
The wettest months (with the highest rainfall) are June and December (2.13").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in December
York Harbor, ME
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (14.6 days).
The months with the least rainy days are January and February (6.3 days).
Average snowfall in December
York Harbor, ME
- Average snowfall in December: 3.27"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
York Harbor, ME
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in December
York Harbor, ME
- Average sea temperature in December: 45.8°F
The best month for swimming (with the highest average sea temperature) is August (65.6°F).
The coldest month (with the lowest average sea temperature) is March (38.5°F).
Average daylight in December /
Average sunshine in December
York Harbor, ME
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in December
York Harbor, ME
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is July (14.3 days).
Average UV index in December
York Harbor, ME
- 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
York Harbor, ME
- Average cloud cover in December: 47
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
York Harbor, 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).
York Harbor, Maine, USA
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