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's onset brings a negligible change in high-temperatures, falling from a cool 50.9°F (10.5°C) in November to a frosty 43.5°F (6.4°C). Throughout December nights, West Falmouth records a consistent low-temperature averaging an icy 35.4°F (1.9°C).Humidity
The average relative humidity in December is 75%.Rainfall
December is the month with the most rainfall. Rain falls for 12.8 days and accumulates 3.7" (94mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 3.3 days. Throughout December, 0.91" (23mm) of snow is accumulated. In West Falmouth, during the entire year, snow falls for 20.8 days and aggregates up to 6.93" (176mm) of snow.Ocean temperature
In West Falmouth, in December, the average water temperature is 46.9°F (8.3°C).Note: Being in 46.9°F (8.3°C) waters at 55.4°F (13°C) is discomforting, but anything below 50°F (10°C) can jeopardize breathing and induce cold shock, factoring in physical endurance.
Daylight
December has the shortest days of the year in West Falmouth, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 6:50 am and sunset at 4:13 pm. On the last day of December, sunrise is at 7:09 am and sunset at 4:22 pm EST.
Sunshine
In West Falmouth, Massachusetts, the average sunshine in December is 4.8h.UV index
The months with the lowest UV index in West Falmouth, Massachusetts, are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. 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 West Falmouth?
What is the average humidity in December in West Falmouth?
What is the rainiest month in West Falmouth?
How many days does it rain in December in West Falmouth?
How much does it snow in West Falmouth in December?
How cold is the water in December in West Falmouth?
What is the month with the shortest days in West Falmouth?
What is the average length of the day in December in West Falmouth?
When is the sunrise / sunset in December in West Falmouth?
How long on average sun shines in December in West Falmouth?
When is the lowest UV index in West Falmouth?
How high is the UV index in December in West Falmouth?
Average temperature in December
West Falmouth, MA
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is August (74.5°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in December: 35.4°F
The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in December
West Falmouth, 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
West Falmouth, MA
- Average wind speed in December: 14.5mph
The windiest month (with the highest average wind speed) is January (14.9mph).
The calmest months (with the lowest average wind speed) are July and August (9.9mph).
Average humidity in December
West Falmouth, MA
- Average humidity in December: 75%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (74%).
Average rainfall in December
West Falmouth, MA
- Average rainfall in December: 3.7"
The wettest month (with the highest rainfall) is December (3.7").
The driest months (with the least rainfall) are August and September (1.85").
Average rainfall days in December
West Falmouth, MA
- Average rainfall days in December: 12.8 days
The month with the highest number of rainy days is April (16.2 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in December
West Falmouth, MA
- Average snowfall in December: 0.91"
The month with the highest snowfall is March (2.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
West Falmouth, MA
- Average snowfall days in December: 3.3 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
West Falmouth, MA
- Average sea temperature in December: 46.9°F
The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).
Average daylight in December /
Average sunshine in December
West Falmouth, 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 5min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
West Falmouth, MA
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is August (16.4 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in December
West Falmouth, 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
West Falmouth, MA
- Average cloud cover in December: 49
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
West Falmouth, 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).
West Falmouth, Massachusetts, USA
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