Portsmouth weather in December 2020

  • 3°C maximum daytime temperature in December in Portsmouth3
    3°C max day temperature
  • 5 hours of sunshine per day
  • 12 days with some rainfall in December in Portsmouth12
    12 days with some rainfall
  • -7°C minimum night-time temperature in December in Portsmouth-7
    -7°C min night temperature
  • 9 hours of daylight per day in December in Portsmouth9
    9 hours of daylight per day
  • No heat & humidity in December in Portsmouth0
    No heat & humidity
  • 107 mm monthly rainfall in December in Portsmouth107
    107 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Portsmouth1
    1 (Low) UV index
  • 7°C sea temperature in December in Portsmouth7
    7°C sea temperature
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The December weather guide for Portsmouth, New Hampshire 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 Portsmouth in December?

Daytime temperatures usually reach 3°C in Portsmouth in December, falling to -7°C at night.

How sunny is it in Portsmouth in December?

There are normally 5 hours of bright sunshine each day in Portsmouth in December - that's 50% of daylight hours.

Is the sea cold around Portsmouth in December?

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

Does it rain in Portsmouth in December?

There are usually 12 days with some rain in Portsmouth in December and the average monthly rainfall is 107mm.

Portsmouth sunrise & sunset times for December 2020

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


Date Sunrise times Sunset times
Tuesday, 1st December 2020 06:55 16:09
Wednesday, 16th December 2020 07:09 16:09
Thursday, 31st December 2020 07:15 16:18
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where's warm in New Hampshire in December?

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

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