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Ontario weather in September 2023
- 2121°C max day temperature
- 1010 days with some rainfall
- 1111°C min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 7575 mm of monthly rainfall
- 55 (Moderate) UV index
- 1919°C sea temperature
Below are average maximum temperatures at popular destinations in Ontario in September. Select a destination to see more weather parameters.
Recommended for Ontario
The September 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.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Metric (°C / mm) | Imperial (°F / inches)
More about Canada
How hot is it in Ontario in September?
Daytime temperatures usually reach 21°C in Toronto, Ontario in September, falling to 11°C at night.
How sunny is it in Ontario in September?
There are normally 6 hours of bright sunshine each day in Toronto, Ontario in September - that's 48% of daylight hours.
How warm is the sea around Ontario in September?
The average sea temperature around Toronto, Ontario in September is 19°C.
Does it rain in Ontario in September?
There are usually 10 days with some rain in Toronto, Ontario in September and the average monthly rainfall is 75mm.
Ontario September sunrise & sunset times
Browse the sunrise and sunset times for Ontario in September 2023. 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.
|Date||Sunrise times||Sunset times|
|Friday, 1st September 2023||06:41||19:53|
|Friday, 15th September 2023||06:57||19:28|
|Saturday, 30th September 2023||07:14||19:01|
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