Ottawa weather in October 2021

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  • 13°C maximum daytime temperature in October in Ottawa13
    13°C max day temperature
  • 4 hours of sunshine per day
  • 12 days with some rainfall in October in Ottawa12
    12 days with some rainfall
  • 4°C minimum night-time temperature in October in Ottawa4
    4°C min night temperature
  • 11 hours of daylight per day in October in Ottawa11
    11 hours of daylight per day
  • No heat & humidity in October in Ottawa0
    No heat & humidity
  • 71 mm monthly rainfall in October in Ottawa71
    71 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in October in Ottawa3
    3 (Moderate) UV index

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The October weather guide for Ottawa, Ontario 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 warm is it in Ottawa in October?

Daytime temperatures usually reach 13°C in Ottawa in October, falling to 4°C at night.

How sunny is it in Ottawa in October?

There are normally 4 hours of bright sunshine each day in Ottawa in October - that's 40% of daylight hours.

Does it rain in Ottawa in October?

There are usually 12 days with some rain in Ottawa in October and the average monthly rainfall is 71mm.

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

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Ottawa sunrise & sunset times for October 2021

Browse the sunrise & sunset times for Ottawa in October 2021. Select a month to view Ottawa sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Friday, 1st October 2021 07:01 18:43
Saturday, 16th October 2021 07:21 18:15
Sunday, 31st October 2021 07:41 17:51
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Where is warm in Ontario in October for 2021/2022?

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

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