Ottawa Weather in May
With daytime temperatures of 23°C (73°F) and nighttime lows of 10°C (50°F), May in Ottawa brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 113 mm (4.4 in) falls on average.
Rainfall in Ottawa in May
This month experiences about 14 days of rain according to historical data, averaging 113 mm (4.4 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Ottawa in May
In May, Ottawa gets high temperatures, with highs of 23°C (73°F). Nights cool to around 10°C (50°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.If you prefer enjoying temperate temperatures and rain-free days, July and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Ottawa's climate page.
Ottawa Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
23°C (73°F)
Chance of Rain
47%
Precipitation
113 mm (4.4 in)
Rainy days
14 days
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Ottawa in May
For Ottawa in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.What To Do in Ottawa in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Ottawa's climate page.
See the full Ottawa climate overview or explore weather in the United States of America.
