Weather in Ottawa in May
Ottawa, Canada averages a high of 18.6°C (65.5°F) and low of 7.9°C (46.2°F) in May, with 11 rain days and 10.1 hours of daily sunshine. Travel score: 74.8/100 (Good). The best time to visit Ottawa is August.
High
19°C65°F
Low
8°C46°F
🌧️
11
rain days
☀️
10.1
hrs/day sunshine
💧
66%
humidity
75— Good
May in Ottawa is mild and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Ottawa?
How much does it rain in Ottawa in May?
Ottawa receives an average of 85.5mm of rainfall across 11 rainy days in May. The annual total is 1003.6mm.
What should I pack for Ottawa in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 19°C
Recommended
🧥
Light rain jacket
Some rainy days expected (11 days)
☔
Umbrella
Be prepared for occasional showers
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
🎉Visiting Canada in May?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31