Boston weather in December 2023

  • 4°C maximum daytime temperature in December in Boston4
    4°C max day temperature
  • 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
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The December weather guide for Massachusetts (Boston) 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.

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

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How cold is it in Boston in December?

Daytime temperatures usually reach 4°C in Boston in December, falling to -5°C at night.

How sunny is it in Boston in December?

There are normally 5 hours of bright sunshine each day in Boston in December - that's 49% of daylight hours.

Is the sea cold around Boston in December?

The average sea temperature around Boston in December is 7°C.

Does it rain in Boston in December?

There are usually 12 days with some rain in Boston in December and the average monthly rainfall is 105mm. Rain may fall as snow in this month.

Boston December sunrise & sunset times

Browse the sunrise and sunset times for Boston in December 2023. Select a month to view Boston sunrise and sunset times for the next 12 months.


Date Sunrise times Sunset times
Friday, 1st December 2023 06:54 16:13
Saturday, 16th December 2023 07:07 16:13
Sunday, 31st December 2023 07:13 16:21

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