Portland weather in December 2020

  • 2°C maximum daytime temperature in December in Portland2
    2°C max day temperature
  • 4 hours of sunshine per day
  • 12 days with some rainfall in December in Portland12
    12 days with some rainfall
  • -8°C minimum night-time temperature in December in Portland-8
    -8°C min night temperature
  • 9 hours of daylight per day in December in Portland9
    9 hours of daylight per day
  • No heat & humidity in December in Portland0
    No heat & humidity
  • 117 mm monthly rainfall in December in Portland117
    117 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Portland1
    1 (Low) UV index
  • 7°C sea temperature in December in Portland7
    7°C sea temperature
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The December weather guide for Portland, Maine 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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How cold is it in Portland in December?

Daytime temperatures usually reach 2°C in Portland in December, falling to -8°C at night.

How sunny is it in Portland in December?

There are normally 4 hours of bright sunshine each day in Portland in December - that's 48% of daylight hours.

Is the sea cold around Portland in December?

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

Does it rain in Portland in December?

There are usually 12 days with some rain in Portland in December and the average monthly rainfall is 117mm.

Portland sunrise & sunset times for December 2020

Browse the sunrise & sunset times for Portland in December 2020. Select a month to view Portland sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Tuesday, 1st December 2020 06:55 16:05
Wednesday, 16th December 2020 07:09 16:05
Thursday, 31st December 2020 07:14 16:14
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where's warm in Maine in December?

Below are average maximum temperatures at popular destinations in Maine in December. Select a destination to see more weather parameters.

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