Toronto Weather in September
In Toronto, September brings high daytime temperatures around 22°C (72°F), with nights cooling to 15°C (59°F). Expect quite a bit of rainfall this month.
Rainfall in Toronto in September
You can typically expect 10 days of rain this month, averaging around 83 mm (3.3 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Toronto in September
September is a perfect month in Toronto, with 22°C (72°F) during the day and 15°C (59°F) at night. September marks the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 15°C (59°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Toronto in September
The days are predominantly sunny, with an estimated total of around 195 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Toronto.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Toronto's climate page.
Toronto Temperature in September
Min Temperature
15°C (59°F)
Max Temperature
22°C (72°F)
Chance of Rain
32%
Precipitation
83 mm (3.3 in)
Rainy days
10 days
Humidity
87%
Sunshine
195 hours
Percentage Sunshine
52%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Toronto typically drop from around 24°C (75°F) at the start of September to approximately 18°C (64°F) by the end. Nights are cool, with lows typically ranging from 10°C (50°F) to 16°C (61°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Toronto in September
Browse day-by-day weather records for Toronto spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Toronto historical weather extremes in September
The extremes listed below come from historical weather data collected in Toronto from 1976 through 2025.
- On September 10, 1983, temperatures climbed to 33°C (91°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 9°C (48°F), recorded on September 28, 2000.
- Toronto registered its coldest September night on September 27, 1989, with temperatures dropping to 0°C (32°F).
Best Places in Canada in September
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in September →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Toronto in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Toronto in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Toronto's climate page.
Temperature Rainfall Sunshine Humidity
See the full Toronto climate overview or explore weather in Canada.
