Ontario weather in May 2021

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

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The May weather guide for 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 hot is it in Ontario in May?

Daytime temperatures usually reach 18°C in Toronto, Ontario in May, falling to 8°C at night.

How sunny is it in Ontario in May?

There are normally 7 hours of bright sunshine each day in Toronto, Ontario in May - that's 50% of daylight hours.

Is the sea cold around Ontario in May?

The average sea temperature around Toronto, Ontario in May is 7°C.

Does it rain in Ontario in May?

There are usually 11 days with some rain in Toronto, Ontario in May and the average monthly rainfall is 69mm.

Ontario sunrise & sunset times for May 2021

Browse the sunrise & sunset times for Ontario in May 2021. 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
Saturday, 1st May 2021 06:09 20:20
Sunday, 16th May 2021 05:51 20:38
Monday, 31st May 2021 05:39 20:52
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Metric (°C / mm)  |  Imperial (°F / inches)

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