Ottawa · October
Run in the morning.
Cool month: average high 57°F, low 44°F. Humidity averages 77% — the limiting factor on most runs. Expect 15 rain days — plan around the radar. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
Avg high / low
57° / 44°F
Humidity
77%
Rain days
15/mo
Wind
10 mph
What October feels like in Ottawa
Sunrise
07:21
Mid-month average
Sunset
18:16
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Ottawa in October
The kit for October in Ottawa: a long-sleeve or light jacket for the first mile, a water-resistant cap or jacket on standby.
October vs the surrounding months
vs September
-13° avg high
+3 rain days
Ottawa in September →
October
57°F avg high
15 rain days
Best: morning
vs November
+15° avg high
0 rain days
Ottawa in November →
Frequently Asked Questions
What is the best time of day to run in Ottawa in October?+
Morning. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
What's the average temperature in Ottawa in October?+
Average high 57°F, average low 44°F.
How does October compare to surrounding months in Ottawa?+
Compared to September (avg high 71°F), October is cooler. Compared to November (avg high 42°F), October is warmer.
Does it rain often in Ottawa in October?+
Expect about 15 measurable rain days in October, on average.