Cool
Average highs are around 13°C, so pack for cooler days.
Weather Guide
Ottawa, Ontario, Canada Average Monthly Weather
Weather score39Poor annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 11°C, sunshine averages 5.5h per day, and rainfall totals about 892mm.
Annual weather
Annual averages
Temp
11°C
Rain
892mm
Annual total
Sun
5.5h
Weather score
39
Poor avg
Seasonal climate calendar
Trip feel
Drier
Rainfall averages 71mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 4.3h per day, so this is not one of the brighter months.
Map
Weather map
Compare Ottawa, Ontario, Canada with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
October13°C average high
October is close to Ottawa's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
October71mm average rain
October sits near Ottawa's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsAll year
Rainfall stays comparatively low through the year.
Sun
October4.3 hours average sun
October is below Ottawa's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
October28 weather score
October scores below Ottawa's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
