Ontario weather in June 2025

Expect 24°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Ontario in June. Check more long-term weather averages for Ontario in June before you book your next holiday to Ontario in 2025/2026.

  • 24°C maximum daytime temperature in June in Ontario (Toronto)24
    24°C max day temperature
  • 9 hours of sunshine per day
  • 10 days with some rainfall in June in Ontario (Toronto)10
    10 days with some rainfall
  • 13°C minimum night-time temperature in June in Ontario (Toronto)13
    13°C min night temperature
  • 15 hours of daylight per day in June in Ontario (Toronto)15
    15 hours of daylight per day
  • No heat & humidity in June in Ontario (Toronto)0
    No heat & humidity
  • 69 mm monthly rainfall in June in Ontario (Toronto)69
    69 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in June in Ontario (Toronto)8
    8 (Very High) UV index
  • 13°C sea temperature in June in Ontario (Toronto)13
    13°C sea temperature

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The June 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 June. 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 hot is it in Ontario in June?

Daytime temperatures usually reach 24°C in Toronto, Ontario in June, falling to 13°C at night.

How sunny is it in Ontario in June?

There are normally 9 hours of bright sunshine each day in Toronto, Ontario in June - that's 55% of daylight hours.

How warm is the sea around Ontario in June?

The average sea temperature around Toronto, Ontario in June is 13°C.

Does it rain in Ontario in June?

There are usually 10 days with some rain in Toronto, Ontario in June and the average monthly rainfall is 69mm.

Ontario June sunrise & sunset times

Browse the sunrise and sunset times for Ontario in June 2025. 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 June 2025 04:39 19:53
Sunday, 15th June 2025 04:35 20:01
Monday, 30th June 2025 04:40 20:03

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