Ontario weather in December 2024

Expect 0°C daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Ontario in December. Check more long-term weather averages for Ontario in December before you book your next holiday to Ontario in 2024/2025.

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

Top Ontario destinations

Below are average maximum temperatures at popular countries, regions and places in Ontario in December. Select a holiday destination to see more weather parameters.

All Ontario destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Canada

How cold is it in Ontario in December?

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

How sunny is it in Ontario in December?

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

Is the sea cold around Ontario in December?

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

Does it rain in Ontario in December?

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

Ontario December sunrise & sunset times

Browse the sunrise and sunset times for Ontario in December 2024. Select a month to view Ontario sunrise and sunset times for the next 12 months. The Ontario sunrise and sunset times shown below are for Toronto.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2024 07:32 16:42
Monday, 16th December 2024 07:45 16:42
Tuesday, 31st December 2024 07:51 16:51

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