December weather forecastProvincetown, MA
December
Weather in December
December in Provincetown, Massachusetts, is marked by the arrival of winter, with temperatures dropping to 43.2°F (6.2°C). Cold winds combined with shorter days give a proper start to the winter season. The rainfall amount increases from November, turning the city damp and cold. The sea is at its coldest compared to the rest of the year, making any water activity unimaginable. Despite these chilly conditions, the holiday season brings a unique charm to the city, adorned with festive decorations and lights.Temperature
Provincetown in December undergoes a slight reduction in the average high-temperature, shifting from November's fresh 50.4°F (10.2°C) to a chilly 43.2°F (6.2°C). Provincetown's nocturnal readings in December exhibit minimal variation from the daytime temperatures, averaging at a cold 35.8°F (2.1°C).Humidity
The average relative humidity in December in Provincetown is 76%.Rainfall
The month with the most rainfall is December, when the rain falls for 12.1 days and typically aggregates up to 3.39" (86mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Provincetown. In Provincetown, in December, snow falls for 3.4 days, with typically accumulated 0.71" (18mm) of snow. In Provincetown, during the entire year, snow falls for 20.3 days and aggregates up to 5.39" (137mm) of snow.Ocean temperature
In December, the average ocean temperature is 46°F (7.8°C).Note: You can swim in 46°F (7.8°C) below 50°F (10°C) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 55.4°F (13°C) without it is tough.
Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 6:49 am and sunset at 4:10 pm. On the last day of December, sunrise is at 7:08 am and sunset at 4:19 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 4.4h of sunshine.UV index
The months with the lowest UV index in Provincetown are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 2 translates into these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Provincetown, MA
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is August (71.8°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in December: 35.8°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).
Average pressure in December
Provincetown, MA
- Average pressure in December: 30.02"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
Provincetown, MA
- Average wind speed in December: 17.1mph
The windiest month (with the highest average wind speed) is January (17.8mph).
The calmest month (with the lowest average wind speed) is August (10.9mph).
Average humidity in December
Provincetown, MA
- Average humidity in December: 76%
The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (74%).
Average rainfall in December
Provincetown, MA
- Average rainfall in December: 3.39"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in December
Provincetown, MA
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (8.6 days).
Average snowfall in December
Provincetown, MA
- Average snowfall in December: 0.71"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Provincetown, MA
- Average snowfall days in December: 3.4 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Provincetown, MA
- Average sea temperature in December: 46°F
The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (39°F).
Average daylight in December /
Average sunshine in December
Provincetown, MA
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 24min
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 24min).
Average sunshine days in December
Provincetown, MA
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is July (12.6 days).
Average UV index in December
Provincetown, MA
- 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
Provincetown, MA
- Average cloud cover in December: 53
The month with the most cloud cover is December (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Provincetown, 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).
