Month-by-month travel weather
Ottawa May weather
Ottawa, Canada · May
Evenings can still feel cool
Outdoor time becomes easier. Rain still happens, but overall comfort improves.
May averages at a glance
Average low
around 9–11°C
Average high
around 18–20°C
Average precipitation
around 55–85 mm
Precip days
about 9–12 days
What to wear in May in Ottawa
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Light clothing + thin jacket
- • Optional umbrella
Travel tips for visiting Ottawa in May
- • If you’ll be out after sunset, keep a thin layer handy.
May weather in Ottawa — FAQ
Q. Is May warm?
A. Often yes, though evenings can still feel cool.
Explore Ottawa
These pages are connected so you can compare conditions and decide for yourself.