Warm
Average highs sit around 26°C, giving warm days by monthly-average standards.
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
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 88mm, so some wet days are possible.
Bright
Sunshine averages 8.9h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Ottawa, Ontario, Canada with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July26°C average high
July is one of Ottawa's warmest months, with daytime heat above the yearly average.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
July88mm average rain
July is one of Ottawa's wettest months, so rain is likely to be a major planning factor.
Driest monthsAll year
Rainfall stays comparatively low through the year.
Sun
July8.9 hours average sun
July is one of Ottawa's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
July71 weather score
July is one of Ottawa's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
