Ottawa Weather in October

October in Ottawa brings pleasant temperatures, with daytime highs of 20°C (68°F) and nights around 7°C (45°F). Quite a bit of rainfall is expected, around 82 mm (3.2 in), so pack an umbrella.

Rainfall in Ottawa in October

Historically, approximately 8 days this month are expected to have rain, averaging 82 mm (3.2 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Ottawa in October

October is a perfect month in Ottawa, with 20°C (68°F) during the day and 7°C (45°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Ottawa in October

With approximately 212 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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• January
• February
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• May
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• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Ottawa's climate page.

Ottawa Temperature in October

Min Temperature 7°C (45°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 28%  

Precipitation 82 mm (3.2 in)  

Rainy days 8 days  

Humidity 68% *  

Sunshine 212 hours *  

Percentage Sunshine 61% *  

* Data from: Topeka, the United States of America (59 KM, 37 Miles).

What to Wear in Ottawa in October

Pleasant temperatures in October mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Ottawa in October

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

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Ottawa's climate page.

More climate data for Ottawa

Temperature Rainfall Sunshine Humidity

See the full Ottawa climate overview or explore weather in the United States of America.