What September feels like in Toronto
In Toronto, September brings early autumn. Afternoons are mild and comfortable for most people in light layers. Little changes after sunset — nights stay mild, only slightly below the daytime level. Moist air is typical, yet it seldom feels heavy at this time of year.
Rain in Toronto in September
Showers are a regular feature, arriving about one day in 3. A rainy day brings about 7.2 mm (0.3 in) on average — steady rain rather than a passing shower. That is close to Toronto's typical rain per wet day for the whole year (about 7 mm).
Daylight and sunshine in September
Mid-month, Toronto gets 12 h 35 min of daylight, from sunrise near 6:55 am to sunset near 7:30 pm. Compared with mid-August, the day has lost 1 h 28 min. The sun is out for roughly 77% of those daylight hours, so there are plenty of bright spells.
How September compares to the rest of the year
In Toronto's temperature order, September sits as the 4th warmest month. Afternoons run 3.7°C (6.7°F) cooler than in August, with 2 mm more rain. Temperatures keep falling into October. October averages a high of 14.8°C (58.6°F).
Who September suits
- Sightseeing: a good fit — daytime temperatures are fine for walking around.
- Parks & outdoor: a good fit — good conditions for sitting outside.
- Beach: less ideal — too many rainy days.
Tips for visiting Toronto in September
Rain Protection
A compact umbrella and a light waterproof jacket.
Sunglasses
Frequent sunshine — sunglasses and a light hat.
Quick questions
How warm is Toronto in September?
Expect around 21.6°C (70.9°F) in the afternoon and 14.5°C (58.1°F) at night, which most visitors would call mild.
Does it rain a lot in Toronto in September?
Quite a lot — 65 mm spread over about 9 days.
What should I wear in Toronto in September?
Based on the averages: rain protection and sunglasses. Evenings feel similar to the day, so the same clothes work from morning to night.
Is September or October better for visiting Toronto?
On our 12-month climate ranking, September comes out ahead (#2 of 12 vs #6). October is cooler and has more rainy days.