Toronto weather in December 2025

Expect daytime maximum temperatures of 0°C in Toronto in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 13 days with some rainfall and typically 72 mm of rainfall in the month, which might fall as snow.

  • 0°C maximum daytime temperature in December in Toronto0
    0°C max day temperature
  • 2 hours of sunshine per day
  • 13 days with some rainfall in December in Toronto13
    13 days with some rainfall
  • -6°C minimum night-time temperature in December in Toronto-6
    -6°C min night temperature
  • 9 hours of daylight per day in December in Toronto9
    9 hours of daylight per day
  • No heat & humidity in December in Toronto0
    No heat & humidity
  • 72 mm monthly rainfall in December in Toronto72
    72 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Toronto1
    1 (Low) UV index
  • 5°C sea temperature in December in Toronto5
    5°C sea temperature

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The December weather guide for Ontario (Toronto) 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 Ontario

How cold is it in Toronto in December?

Daytime temperatures usually reach 0°C in Toronto in December, falling to -6°C at night.

How sunny is it in Toronto in December?

There are normally 2 hours of bright sunshine each day in Toronto in December - that's 26% of daylight hours.

Is the sea cold around Toronto in December?

The average sea temperature around Toronto in December is 5°C.

Does it rain in Toronto in December?

There are usually 13 days with some rain in Toronto in December and the average monthly rainfall is 72mm. Rain may fall as snow in this month.

Toronto December sunrise & sunset times

Browse the sunrise and sunset times for Toronto in December 2025. Select a month to view Toronto sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:32 16:42
Tuesday, 16th December 2025 07:45 16:42
Wednesday, 31st December 2025 07:51 16:51

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