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Ontario weather in September 2023
- 21°C max day temperature
21 - 6 hours of sunshine per day
- 10 days with some rainfall
10 - 11°C min night temperature
11 - 12 hours of daylight per day
12 - No heat & humidity
0 - 75 mm of monthly rainfall
75 - 5 (Moderate) UV index
5 - 19°C sea temperature
19
Below are average maximum temperatures at popular destinations in Ontario in September. Select a destination to see more weather parameters.
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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.
JanFebMarAprMayJunJulAugSepOctNovDec
| 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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