Weather in October 2025

Ottawa weather in October 2025

The temperatures in Ottawa in October are quite cold with temperatures between 5°C and 13°C, warm clothes are a must.

You can expect rain for roughly half of the month of October in Ottawa. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.

Please note that Ottawa can expect a few days of snow in October.

Our weather forecast can give you a great sense of what weather to expect in Ottawa in October 2025.

If you’re planning to visit Ottawa in the near future, we highly recommend that you review the 14 day weather forecast for Ottawa before you arrive.

Temperatures
Temperatures
13° / 5°
Rainy Days
Rainy Days
9
Snowy Days
Snowy Days
1
Dry Days
Dry Days
21
Rainfall
Rainfall
134
mm
8.4
Sun Hours
8.4
Hrs

Ottawa annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January -7° / -14° 5 5 22 89 mm
Awful
February -5° / -13° 5 3 21 85 mm
Awful
March 1° / -6° 8 8 16 85 mm
Awful
April 9° / 1° 11 13 7 122 mm
Awful
May 18° / 8° 8 23 1 116 mm
Ok
June 22° / 12° 7 23 0 129 mm
Ok
July 25° / 15° 6 25 0 129 mm
Perfect
August 25° / 15° 7 24 0 137 mm
Good
September 21° / 10° 5 25 0 102 mm
Good
October 13° / 5° 9 21 1 134 mm
Bad
November 5° / -2° 7 14 8 80 mm
Awful
December -2° / -8° 7 6 18 101 mm
Awful
Temperatures in Ottawa in October
Rain in Ottawa in October

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Weather in Ottawa in October - FAQ

What is the average temperature in Ottawa in October?
The average temperature in Ottawa in October is 5/13° C.
What is the chance of rain in Ottawa in October?
On average, there are 9 rainy days in Ottawa during October.
Weather wise, is October a good time to visit Ottawa?
The weather in Ottawa in October is bad.
Can it snow in Ottawa in October?
On average, there are 1 snowy days in Ottawa in October.
More about the weather in Ottawa