Ontario weather in March 2020

  • 39°F maximum daytime temperature in March in Ontario (Toronto)39
    39°F max day temperature
  • 5 hours of sunshine per day
  • 10 days with some rainfall in March in Ontario (Toronto)10
    10 days with some rainfall
  • 25°F minimum night-time temperature in March in Ontario (Toronto)25
    25°F min night temperature
  • 12 hours of daylight per day in March in Ontario (Toronto)12
    12 hours of daylight per day
  • No heat & humidity in March in Ontario (Toronto)0
    No heat & humidity
  • 2.4 inches monthly rainfall in March in Ontario (Toronto)2.4
    2.4 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in March in Ontario (Toronto)3
    3 (Moderate) UV index
  • 36°F sea temperature in March in Ontario (Toronto)36
    36°F sea temperature

Going to Ontario? Find the best month to visit Ontario based on the weather.

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Expect 39°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Ontario in March. Check more long-term weather averages for Ontario in March before you book your next holiday to Ontario in 2020/2021. The March weather averages shown above are for Toronto.

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The March 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)  |  Imperial (°F)

Guide to Ontario weather in March

The average maximum daytime temperature in Ontario in March is a cold 4°C (39°F). The average night-time temperature is usually a very cold -4°C (25°F). There are usually 5 hours of bright sunshine each day, which represents 40% of the 12 hours of daylight.

Expect 60mm (2.4 inches) of rainfall across the whole of March with 10 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 March is 2°C (36°F).

The weather in Ontario in March is represented by Toronto.

Ontario sunrise & sunset times for March 2020

Browse the sunrise & sunset times for Ontario in March 2020. 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
Sunday, 1st March 2020 06:53 18:07
Monday, 2nd March 2020 06:52 18:08
Tuesday, 3rd March 2020 06:50 18:09
Wednesday, 4th March 2020 06:48 18:11
Thursday, 5th March 2020 06:46 18:12
Friday, 6th March 2020 06:45 18:13
Saturday, 7th March 2020 06:43 18:15
Sunday, 8th March 2020 07:41* 19:16*
Monday, 9th March 2020 07:39 19:17
Tuesday, 10th March 2020 07:38 19:18
Wednesday, 11th March 2020 07:36 19:20
Thursday, 12th March 2020 07:34 19:21
Friday, 13th March 2020 07:32 19:22
Saturday, 14th March 2020 07:31 19:23
Sunday, 15th March 2020 07:29 19:24
Monday, 16th March 2020 07:27 19:26
Tuesday, 17th March 2020 07:25 19:27
Wednesday, 18th March 2020 07:23 19:28
Thursday, 19th March 2020 07:22 19:29
Friday, 20th March 2020 07:20 19:31
Saturday, 21st March 2020 07:18 19:32
Sunday, 22nd March 2020 07:16 19:33
Monday, 23rd March 2020 07:14 19:34
Tuesday, 24th March 2020 07:13 19:35
Wednesday, 25th March 2020 07:11 19:37
Thursday, 26th March 2020 07:09 19:38
Friday, 27th March 2020 07:07 19:39
Saturday, 28th March 2020 07:05 19:40
Sunday, 29th March 2020 07:04 19:41
Monday, 30th March 2020 07:02 19:43
Tuesday, 31st March 2020 07:00 19:44

*Daylight saving starts - Eastern Daylight Time (EDT)

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Popular Ontario destinations

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

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