London weather in September (Ontario, Canada)

How is the weather in London in September? This guide provides all the details you need.

In London the weather in September is generally perfect, characterized by high temperatures and moderate rainfall. Anticipate daytime temperatures around 23°C, while night temperatures can drop to 11°C.

London in September usually receives moderate rainfall, averaging around 92 mm for the month. Typically around 11 days of rainfall is expected.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit. August and September generally stand out with the best circumstances. While January, February, March, April, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized London climate page with graphs.

 

London, monthly averages in September

Min Temperature 11°C  

Max Temperature 23°C  

Chance of Rain 37%  

Precipitation 92 mm  

Rainy days 11 days  

Where to go in Canada in September

Find out more about the weather in Canada in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to London, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in London.

Our site offers climate and forecast data for every country in the world. Are you going to Canada? On this website you can find historical weather averages for many cities in Canada. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.