Toronto weather in September

Long-run climate averages for Toronto, Ontario in September, plus what the forecast models say for the days ahead.

September at a glance

In September, Toronto averages 22°C by day and 15°C at night. The wettest month is usually April.

September in Toronto averages a daytime high of 22°C and an overnight low of 15°C, which reads as warm for this part of the world. Across the whole year Toronto sees roughly 969 mm of precipitation.

Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Toronto forecast with every model compared and how much they currently agree.

Toronto weather by month

what to expect in Toronto through the year

Here is Toronto's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Toronto by season.

Jan

1°

-4°

Cold

Feb

4°

-5°

Cold

Mar

6°

-2°

Cold

Apr

12°

3°

Cool

Wettest

May

18°

9°

Mild

Jun

23°

15°

Warm

Jul

26°

17°

Warm

Aug

24°

16°

Warm

Sep

22°

15°

Warm

Oct

16°

9°

Mild

Nov

9°

2°

Cool

Dec

4°

-1°

Cold

Common questions

How warm is Toronto in September?

Toronto averages a daytime high of 22°C in September, with overnight lows around 15°C. These are long-run climate averages, not a forecast — for the actual days ahead see the live model comparison.

Is September a good time to visit Toronto?

The most comfortable time to visit Toronto is usually May, June, July and August, when daytime highs sit in the pleasant 16-26°C range and the heaviest April rain is behind you.

Does it rain a lot in Toronto in September?

The wettest month in Toronto is usually April. Across the year the city sees roughly 969 mm of precipitation.

Toronto in other months

January February March April May June July August October November December

More about Toronto

Toronto live forecast Best time to visit Toronto Which forecast is most accurate in Canada?