Weather for Toronto in September is typically good with an average maximum temperature of +70°F during the day, and approximately 9 sunny days monthly. Typically, there are about 12 rainy days with the total average precipitation that falls in September around 81 mm. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+70°F
Avg. max. temperature
+37°F
Min.
+91°F
Max.
81 mm
Total precipitation
74%
Avg. humidity
3 m/s
Avg. wind
9 ☀️
Sunny Days
7 ⛅️
Cloudy
12 🌦
Rainy
Our opinion: Toronto has good weather in September.
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Average temperature in Toronto in September
Here are the expected maximum, average and minimum temperatures in Toronto for September based on the historical data.
Last Year
Historical Data
The expected average maximum temperature in September is +73°F with a maximum of +91°F and a minimum of +46°F.
The average maximum temperature goes down 4% by the end of the month, compared with the beginning of the month, from +75°F to +73°F.
Is Toronto warm or cold in September?
Toronto is typically mild in September.
Maximum temperatures go down compared to the previous month from +77°F to +70°F. The minimum temperature also goes down from +64°F to +57°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Toronto:
Water temperature in Toronto in September
Water in Toronto in September is Fresh. It varies from +64°F to +73°F, with an average of +68°F.This is almost similar to the air temperature, which averages +70°F.
The water temperature in September is one of the warmest of the entire year:
The warmest water temperatures in Toronto are reached in August, when the average sea temperature rises to +72°F. The coldest water temperatures are in February, with an average of +35°F.
Can you swim in Toronto in September?
Water temperature (+68°F) in Toronto in September might be suited for short swims and acclimatized swimmers might find it refreshing.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Think of bringing a full-body or shorty wetsuit (3mm-5mm thickness) to provide insulation and maintain body heat.
Travel to Toronto
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Flights per week
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Min. Price
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Climate in Toronto in September
Toronto weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+77°F
+70°F
+57°F
Min. temperature
+48°F
+37°F
+27°F
Max. temperature
+95°F
+91°F
+86°F
Rainfall
68 mm
81 mm
93 mm
Wind
3 m/s
3 m/s
4 m/s
Avg. water temperature
+72°F
+68°F
+58°F
Humidity
73%
74%
75%
Air pressure
1015 HPa
1016 HPa
1016 HPa
Sunny days
9
9
6
Cloudy days
7
7
8
Rainy days
11
12
16
Snowy days
0
0
0
September weather is still as good as in August.It’s getting colder in September. From +77°F in the day, the average maximum temperature lowers to +70°F.Prepare for more rain. Average rainfall goes from 68 mm to 81 mm.Humidity rises from 73% to 74%.The average wind speed doesn’t change much during September, staying around 3 m/s.The amount of sunny days stay about the same, averaging 9 sunny days during the month.
Next month (October) brings a further decline in the weather.
Wind speed in Toronto in September based on historical data.
Last Year
Historical Data
The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Toronto is gradually increasing during September, going from 2 m/s to 3 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Toronto based on historical data.
Last Year
Historical Data
Total precipitation in September is about 32 mm, with a 30% chance of rain on a typical day. The maximum amount of rainfall per day is around 10 mm, which is considered light rain.On average, there are about 9 rainy days during September, so prepare to bring an umbrella.
September is one of the rainiest months in Toronto, here is a comparison with other months, total mm:
Toronto wettest month is October, where a typical day has a 52% chance of precipitation and 93 mm of rainfall per day. February, on the other hand, is the driest month with a mere 10% chance of precipitation and 24 mm of rainfall per day.
How was the weather last September in Toronto?
This is the weather in Toronto in September 2023:
1 September
☀️
+75°F
2 September
☀️
+80°F
3 September
☀️
+84°F
4 September
☀️
+91°F
5 September
☀️
+89°F
6 September
☀️
+88°F
7 September
🌧️
+81°F
8 September
☁️
+71°F
9 September
☁️
+68°F
10 September
☁️
+72°F
11 September
☀️
+74°F
12 September
☁️
+74°F
13 September
☁️
+69°F
14 September
☀️
+67°F
15 September
☀️
+70°F
16 September
☀️
+72°F
17 September
☁️
+72°F
18 September
🌧️
+69°F
19 September
☀️
+70°F
20 September
☀️
+67°F
21 September
☀️
+71°F
22 September
☀️
+70°F
23 September
☀️
+70°F
24 September
☀️
+71°F
25 September
☀️
+73°F
26 September
☀️
+66°F
27 September
☀️
+67°F
28 September
☀️
+64°F
29 September
☀️
+68°F
30 September
☀️
+74°F
In September 2023 Toronto had 22 sunny days, 6 cloudy days, and 2 rainy days. The average maximum temperature was +73°F, with an absolute maximum of +91°F and a minimum of +64°F. The average humidity was 78%, with a maximum of 100% and a minimum of 39%. The average wind speed was 4 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change Over the Years
This is how Toronto climate has changed over the last 43 years.
The climate in Toronto in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1979 (+51°F) and the highest in 2012 (+59°F). The driest year was 1994 with only 432 mm of rainfall, and the wettest year was 2023 with 1271 mm.
FAQ
Frequently asked questions about the weather in Toronto in September:
Is September a good time to visit Toronto?
September is a really good time to go to Toronto. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Toronto.
Can you sunbathe in Toronto in September?
September has mild temperatures in Toronto. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Can you swim in Toronto in September?
In general, you can swim in Toronto in September, if you want to, at an average water temperature of +68°F. But it will feel quite cool, and some precautions are necessary to ensure your comfort and safety.
Is Toronto rainy in September?
Toronto is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Toronto in September?
Usually, it’s not very sunny in Toronto in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
How much does it cost to fly to Toronto in September?
The normal prices to fly to Toronto is $537 - $537. It means that the majority of our users have picked flights in this range. To find the best price we recommend you search early, using our flexible dates feature.
For this page, we’ve looked at the typical weather in Toronto, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
