What to pack for Toronto in September
- t-shirts and light layers
- a light jacket for evenings
- a compact umbrella or rain shell — rain is frequent
Humidity averages 74%; max daily wind around 19 km/h.
How September compares
Best months in Toronto: May–September. See the full best time to visit Toronto guide.
Toronto in September: the details
In September, Toronto sees average daytime highs of 22°C (71°F) and overnight lows of 14°C (57°F). Rainfall totals roughly 67 mm across 9.8 rainy days, and the sun shines about 9.9 hours per day with 12.3 hours of daylight mid-month. Relative humidity averages 74%.
In context: September is the 4th-warmest month and the 9th-wettest in Toronto. The sunniest month is July (12.6 h/day).
| Metric | September average |
|---|---|
| Daytime high | 22°C / 71°F |
| Overnight low | 14°C / 57°F |
| Rainfall | 67 mm over 9.8 rainy days |
| Sunshine | 9.9 h/day (12.3 h daylight) |
| Humidity | 74% |
| Travel score | 9.3 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Toronto, Canada (43.71, -79.4) — see our methodology. Actual conditions vary year to year.
Not set on Toronto? Browse the best places to visit in September ranked by travel score.
Frequently asked questions
How hot is Toronto in September?
Daytime highs in Toronto in September average 22°C (71°F); nights drop to about 14°C.
Does it rain in Toronto in September?
Expect around 9.8 rainy days and 67 mm of rainfall in September.
Is September a good time to visit Toronto?
September is one of the best months to visit Toronto. Overall travel score: 9.3/10. The best months are May–September.
Also good in September, near Toronto
Where should you go next month?
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