St John's weather in December 2025

Expect daytime maximum temperatures of 2°C in St John's in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 20 days with some rainfall and typically 150 mm of rainfall in the month, which might fall as snow.

  • 2°C maximum daytime temperature in December in St John's2
    2°C max day temperature
  • 2 hours of sunshine per day
  • 20 days with some rainfall in December in St John's20
    20 days with some rainfall
  • -5°C minimum night-time temperature in December in St John's-5
    -5°C min night temperature
  • 9 hours of daylight per day in December in St John's9
    9 hours of daylight per day
  • No heat & humidity in December in St John's0
    No heat & humidity
  • 150 mm monthly rainfall in December in St John's150
    150 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in St John's1
    1 (Low) UV index
  • 2°C sea temperature in December in St John's2
    2°C sea temperature

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The December weather guide for Newfoundland & Labrador (St John's) 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)

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More about Canada

How cold is it in St John's in December?

Daytime temperatures usually reach 2°C in St John's in December, falling to -5°C at night.

How sunny is it in St John's in December?

There are normally 2 hours of bright sunshine each day in St John's in December - that's 24% of daylight hours.

Is the sea cold around St John's in December?

The average sea temperature around St John's in December is 2°C.

Does it rain in St John's in December?

There are usually 20 days with some rain in St John's in December and the average monthly rainfall is 150mm. Rain may fall as snow in this month.

St John's December sunrise & sunset times

Browse the sunrise and sunset times for St John's in December 2025. Select a month to view St John's sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:28 16:12
Tuesday, 16th December 2025 07:43 16:10
Wednesday, 31st December 2025 07:49 16:19

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