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Weather in Toronto for September 2025

Your guide to Toronto weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Toronto is cooler than usual, with temperatures averaging 22 °C, this is -2.3 °C below the typical seasonal average.

  • Expect cooler weather in the next days in Toronto with the forecast suggesting a temperature of 21.4 °C, lower than the historical average.

  • In general, the average temperature in Toronto at the beginning of September is 24.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.3 °C by the end of September.

    • Rain 🌧️

  • The climate of Toronto in September is notably wet, with an average of 12 rainy days, and a total of 57.3 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
18
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/15°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
67 %
Avg humidity

Toronto Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
25°
2
Sunny
24°
3
Partly cloudy
27°
4
Partly cloudy
26°
5
Overcast
26°
6
Partly cloudy
25°
7
Patchy rain possible
21°
8
Cloudy
23°
9
Sunny
23°
10
Partly cloudy
23°
11
Overcast
24°
12
Partly cloudy
24°
13
Patchy rain possible
23°
14
Sunny
27°
15
Partly cloudy
23°
16
Sunny
24°
17
Mist
25°
18
Sunny
28°
19
Sunny
20°
20
Sunny
17°
21
Sunny
22°
22
Patchy rain possible
20°
23
Patchy rain possible
20°
24
Patchy rain possible
22°
25
Moderate rain
21°
26
Sunny
15°
27
Sunny
15°
28
Overcast
17°
29
Overcast
19°
30
Sunny
19°

Temperatures trend during September in Toronto

See the weather trend as well as the moving average line

September weather in Toronto day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 25° /15° 0 mm 6
2 Sept. Sunny
Sunny
 24° /15° 0.3 mm 6
3 Sept. Partly cloudy
Partly cloudy
 27° /16° 0.2 mm 6
4 Sept. Partly cloudy
Partly cloudy
 26° /16° 3.6 mm 6
5 Sept. Overcast
Overcast
 26° /17° 0.9 mm 6
6 Sept. Partly cloudy
Partly cloudy
 25° /17° 2.4 mm 5
7 Sept. Patchy rain possible
Patchy rain possible
 21° /15° 2.3 mm 5
8 Sept. Cloudy
Cloudy
 23° /13° 1.6 mm 5
9 Sept. Sunny
Sunny
 23° /13° 0.7 mm 6
10 Sept. Partly cloudy
Partly cloudy
 23° /14° 0 mm 6
11 Sept. Overcast
Overcast
 24° /16° 0 mm 6
12 Sept. Partly cloudy
Partly cloudy
 24° /16° 1.1 mm 6
13 Sept. Patchy rain possible
Patchy rain possible
 23° /14° 0.3 mm 5
14 Sept. Sunny
Sunny
 27° /16° 0 mm 1.1
15 Sept. Partly cloudy
Partly cloudy
 23° /17° 0 mm 1.3
16 Sept. Sunny
Sunny
 24° /15° 0 mm 1.3
17 Sept. Mist
Mist
 25° /17° 0 mm 1.3
18 Sept. Sunny
Sunny
 28° /18° 0 mm 0
19 Sept. Sunny
Sunny
 20° /15° 0 mm 5
20 Sept. Sunny
Sunny
 17° /12° 0 mm 4
21 Sept. Sunny
Sunny
 22° /13° 0 mm 5
22 Sept. Patchy rain possible
Patchy rain possible
 20° /16° 0.4 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 20° /17° 3.5 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 22° /17° 1 mm 4
25 Sept. Moderate rain
Moderate rain
 21° /15° 6.7 mm 4
26 Sept. Sunny
Sunny
 15° /9° 0 mm 4
27 Sept. Sunny
Sunny
 15° /8° 0 mm 4
28 Sept. Overcast
Overcast
 17° /12° 0 mm 4
29 Sept. Overcast
Overcast
 19° /13° 0 mm 5
30 Sept. Sunny
Sunny
 19° /11° 0 mm 5
Next
Important Notice
Our weather forecast for Toronto in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Toronto forecast closer to your planned date for the most up-to-date weather information.
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Toronto in September - FAQ

What are the expected maximum and minimum temperatures in Toronto during September?
During September, expect a variety of temperatures with highs around 22° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Toronto during September?
Moderate rainfall is anticipated in Toronto during September, with a total of 57.3 mm spread over approximately 12 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Toronto during September?
The average wind speed in Toronto during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Toronto

Explore the daily rainfall trends and prepare for Torontos September weather 💧

UV exposure in Toronto during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Toronto, located at latitude 43.706 and longitude -79.399. Stay updated with localized weather information tailored for Toronto.

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