Ontario weather in October 2019

  • 14°C maximum daytime temperature in October in Ontario (Toronto)14
    14°C max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in October in Ontario (Toronto)11
    11 days with some rainfall
  • 6°C minimum night-time temperature in October in Ontario (Toronto)6
    6°C min night temperature
  • 11 hours of daylight per day in October in Ontario (Toronto)11
    11 hours of daylight per day
  • No heat & humidity in October in Ontario (Toronto)0
    No heat & humidity
  • 63 mm monthly rainfall in October in Ontario (Toronto)63
    63 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in October in Ontario (Toronto)3
    3 (Moderate) UV index
  • 14°C sea temperature in October in Ontario (Toronto)14
    14°C sea temperature

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Expect 14°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Ontario in October. Check more long-term weather averages for Ontario in October before you book your next holiday to Ontario in 2019/2020. The October weather averages shown above are for Toronto.

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More about Ontario

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The October weather guide for Ontario, represented by 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)

Guide to Ontario weather in October

The average maximum daytime temperature in Ontario in October is a comfortable 14°C (57°F). The average night-time temperature is usually a cold 6°C (43°F). There are usually 5 hours of bright sunshine each day, which represents 42% of the 11 hours of daylight.

Expect 63mm (2.5 inches) of rainfall across the whole of October with 11 days with some rain falling. Maximum UV levels will be moderate (3 UV index) at midday when the skies are clear.

The average sea temperature in and around Ontario in October is 14°C (57°F).

The weather in Ontario in October is represented by Toronto.

Ontario sunrise & sunset times for October 2019

Browse the sunrise & sunset times for Ontario in October 2019. Select a month to view Ontario sunrise & sunset times for the next twelve months. The Ontario sunrise & sunset times shown below are for Toronto.


Date Sunrise times Sunset times
Tuesday, 1st October 2019 07:15 18:59
Wednesday, 2nd October 2019 07:16 18:57
Thursday, 3rd October 2019 07:17 18:55
Friday, 4th October 2019 07:18 18:54
Saturday, 5th October 2019 07:19 18:52
Sunday, 6th October 2019 07:21 18:50
Monday, 7th October 2019 07:22 18:48
Tuesday, 8th October 2019 07:23 18:47
Wednesday, 9th October 2019 07:24 18:45
Thursday, 10th October 2019 07:25 18:43
Friday, 11th October 2019 07:27 18:41
Saturday, 12th October 2019 07:28 18:40
Sunday, 13th October 2019 07:29 18:38
Monday, 14th October 2019 07:30 18:36
Tuesday, 15th October 2019 07:32 18:35
Wednesday, 16th October 2019 07:33 18:33
Thursday, 17th October 2019 07:34 18:31
Friday, 18th October 2019 07:35 18:30
Saturday, 19th October 2019 07:37 18:28
Sunday, 20th October 2019 07:38 18:26
Monday, 21st October 2019 07:39 18:25
Tuesday, 22nd October 2019 07:40 18:23
Wednesday, 23rd October 2019 07:42 18:22
Thursday, 24th October 2019 07:43 18:20
Friday, 25th October 2019 07:44 18:19
Saturday, 26th October 2019 07:45 18:17
Sunday, 27th October 2019 07:47 18:16
Monday, 28th October 2019 07:48 18:14
Tuesday, 29th October 2019 07:49 18:13
Wednesday, 30th October 2019 07:51 18:11
Thursday, 31st October 2019 07:52 18:10
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Popular Ontario destinations

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

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