Toronto weather

Our guide to the weather in Toronto during September

22

Average high

4

UV Index

71mm

Monthly rainfall

20

Sea temperature

Canada's largest city has a diverse climate with starkly contrasting summers and winters. We've looked at the most up-to-date weather data for Toronto, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Toronto weather in September.

How warm is it in Toronto during September?

The temperature reaches around 22℃ during the daytime in September, falling away to 15℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Toronto during September?

On average, there will be 5 rainy days during the month, amounting to 71.0mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Toronto during September?

You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during September. With warm air temperatures and high humidity, any breeze will feel warm but refreshing.

How warm is the sea in Toronto during September?

The water around Toronto is around 20℃ during September. It will feel a little on the cool when first entering, but you'll warm up quickly. Most kids will have no problem with this temperature, but those who feel the cold are unlikely to want to swim.

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Toronto Blog posts

From the UK's most popular travel bloggers

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How to Spend a Fantastic One Day in Toronto Itinerary

3rd February 2026 by The World in My Pocket

With just one day to explore Toronto before continuing on to Montreal, the opportunity to discover the city's highlights was too good to pass up. After an incredible trip to Nova Scotia, the prospect of a brief stop in this vibrant metropolis was exciting. This itinerary is designed for those who want to make the most of a single day in Toronto, ensuring you experience the best the city has to offer, even on a tight schedule....

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How to Get From Hamilton Airport to Downtown Toronto

13th June 2024 by The World in My Pocket

In April, our intrepid traveller journeyed from London to Toronto, only to find themselves landing at Hamilton Airport instead of the bustling Toronto Pearson. Despite the unexpected change in plans, the quieter experience turned out to be a pleasant surprise....

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Cheapest Way to Get From Toronto Pearson Airport to Downtown

27th September 2023 by The World in My Pocket

Once the flight was booked, the travel blogger found themselves pondering the most cost-effective means of transportation from Toronto Pearson Airport to the heart of the city. The flight was scheduled to touch down at midnight, but in reality, it ended up arriving at the ungodly hour of 2 am....

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Toronto vs New York City – Which Is Better To Visit In 2023?

21st September 2023 by I'm just a girl 16

Last Updated on 14th September 2023, this article comparing Toronto and New York City contains affiliate links. Are you considering a trip to either Toronto or New York City? Maybe you're even contemplating visiting both, but finding it difficult to decide which city to explore first! This comprehensive guide comparing Toronto and New York City will assist you in making that decision....

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Canada Travel Guide: Toronto, Montreal and Quebec City

10th February 2022 by Two Monkey's Travel

Located in North America is a country famous for ice hockey, the Maple leaf, two widely-celebrated Justins (Bieber and Trudeau), and poutine. If I were to describe it in one word, however, I would say that it’s diverse. The place is populated with people from all walks of life, from Asian and Middle-Eastern to European communities. This variety of cultural backgrounds is translated in their food ranging from Chinese takeaways, kebabs, to pizzas and pasta. That’s Canada, eh....

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25 things to do in Toronto, Canada

3rd January 2022 by Two Monkey's Travel

Found along Lake Ontario, is the capital of Ontario; Toronto. Though a metropolis full of towering skyscrapers, Toronto has natural attractions including luscious parks. It is considered one of the safest cities in the world even though the population is almost 3 million....

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The best places to visit on your first time in Canada

27th December 2020 by PommieTravels

If you’re a nature lover then you’ll love Canada, with its beautiful landscapes, glaciers, lakes and national parks. Canada is the second largest country in the world after Russia, so it can be difficult to know where to visit as a first-timer. Of course you’ll want to try the typical Canadian foods such as poutine and Canadian bacon, and you’ll definitely want to get out into nature and see the wildlife such as moose and bison. But where should you go? In the article below we’ll list...

Weather in Toronto

Our month-by-month guide to the weather and climate in Toronto

-2.4

Toronto weather in

January
-1.7

Toronto weather in

February
3.6

Toronto weather in

March
9.1

Toronto weather in

April
16.0

Toronto weather in

May
21.4

Toronto weather in

June
25.4

Toronto weather in

July
25.4

Toronto weather in

August
22.0

Toronto weather in

September
14.5

Toronto weather in

October
7.7

Toronto weather in

November
1.8

Toronto weather in

December