Boston weather in December 2019

  • 4°C maximum daytime temperature in December in Boston4
    4°C max day temperature
  • 5 hours of sunshine per day (49% of daylight hours) in December in Boston5
    5 hours of sunshine per day
  • 12 days with some rainfall in December in Boston12
    12 days with some rainfall
  • -5°C minimum night-time temperature in December in Boston-5
    -5°C min night temperature
  • 9 hours of daylight per day in December in Boston9
    9 hours of daylight per day
  • No heat & humidity in December in Boston0
    No heat & humidity
  • 105 mm monthly rainfall in December in Boston105
    105 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Boston1
    1 (Low) UV index
  • 7°C sea temperature in December in Boston7
    7°C sea temperature

Going to Boston? Find the best month to visit Boston based on the weather.

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Expect 4°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Boston in December. Check more long-term weather averages for Boston in December before you book your next holiday to Massachusetts in 2019/2020.

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More about Boston

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The December weather guide for Boston, Massachusetts shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Boston weather in December

The average maximum daytime temperature in Boston in December is a cold 4°C (39°F). The average night-time temperature is usually a very cold -5°C (23°F). There are usually 5 hours of bright sunshine each day, which represents 49% of the 9 hours of daylight.

Expect 105mm (4.1 inches) of rainfall across the whole of December with 12 days with some rain falling. Maximum UV levels will be low (1 UV index) at midday when the skies are clear.

The average sea temperature in and around Boston in December is 7°C (45°F).

Boston sunrise & sunset times for December 2019

Browse the sunrise & sunset times for Boston in December 2019. Select a month to view Boston sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2019 06:54 16:13
Monday, 2nd December 2019 06:55 16:12
Tuesday, 3rd December 2019 06:56 16:12
Wednesday, 4th December 2019 06:57 16:12
Thursday, 5th December 2019 06:58 16:12
Friday, 6th December 2019 06:59 16:12
Saturday, 7th December 2019 07:00 16:12
Sunday, 8th December 2019 07:00 16:12
Monday, 9th December 2019 07:01 16:12
Tuesday, 10th December 2019 07:02 16:12
Wednesday, 11th December 2019 07:03 16:12
Thursday, 12th December 2019 07:04 16:12
Friday, 13th December 2019 07:05 16:12
Saturday, 14th December 2019 07:05 16:12
Sunday, 15th December 2019 07:06 16:12
Monday, 16th December 2019 07:07 16:13
Tuesday, 17th December 2019 07:08 16:13
Wednesday, 18th December 2019 07:08 16:13
Thursday, 19th December 2019 07:09 16:14
Friday, 20th December 2019 07:09 16:14
Saturday, 21st December 2019 07:10 16:15
Sunday, 22nd December 2019 07:10 16:15
Monday, 23rd December 2019 07:11 16:16
Tuesday, 24th December 2019 07:11 16:16
Wednesday, 25th December 2019 07:12 16:17
Thursday, 26th December 2019 07:12 16:17
Friday, 27th December 2019 07:12 16:18
Saturday, 28th December 2019 07:13 16:19
Sunday, 29th December 2019 07:13 16:20
Monday, 30th December 2019 07:13 16:20
Tuesday, 31st December 2019 07:13 16:21
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