Portland weather in December 2020

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  • 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. Rain may fall as snow in this month.

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 is warm in Maine in December for 2020/2021?

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

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