Blue Mountains weather in September (Ontario, Canada)

Will it be rainy or sunny in Blue Mountains this September? See what weather conditions to anticipate this month with our guide.

Temperatures

During September, Blue Mountains experiences perfect weather, with pleasant temperatures and moderate rainfall. Enjoy the summer season during this month. The temperature during the day can rise to approximately 21°C. At night, it falls to around 13°C.

Precipitation

Blue Mountains in September usually receives moderate rainfall, averaging around 99 mm for the month. Expect around 12 days of rain based on historical data.

So this is a great month to visit if you prefer dry days with pleasant temperatures. June, July, August and September typically offer the most optimal weather. In contrast, January, February, March, April, November and December tend to have less optimal conditions.

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

 

Blue Mountains, monthly averages in September

Min Temperature 13°C  

Max Temperature 21°C  

Chance of Rain 40%  

Precipitation 99 mm  

Rainy days 12 days  

Where to go in Canada in September

Find out more about the weather in Canada and which places have the best travel 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 Blue Mountains, 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.

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 Blue Mountains.

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 travel conditions. Find out where to go with our weather planner.