May · Canada
Best time to visit Montreal in May Weather, crowds & prices
Weather in Montreal in May
Average temperature 15°C, 65 mm of rain, about 27 days with 6+ hours of sunshine and 77% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
8.7/10
Ranked #1 of 12 months
- Avg temp
- 15°C
- Rainfall
- 65 mm
- Humidity
- 77%
- Days with 6h+ sun
- 27
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
May in Montreal scores 8.7/10 for sightseeing and cultural travel - the single best month of the year. Expect around 15°C, 65 mm of rain, and roughly 27 days with 6+ hours of sunshine this month.
Montréal sets Old Montréal's stone streets below Mount Royal, with Plateau cafés and bagels nearby.
May in Montreal — the year's strongest window
May averages 15°C (58°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 65 mm, so plan one flexible day in three; you still get about 27 days with 6+ hours of sunshine and 14.7 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Montreal at 8.7/10 — the reference point every other month on this page is measured against.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Plan for peak pricing, with crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Montreal in May?
- In May, Montreal averages 15°C, 65 mm of rain, and about 27 days with 6+ hours of sunshine. Its climate-comfort score is 8.7/10.
- Is May a good time to visit Montreal?
- May earns a 8.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Montreal in May?
- Expect about 65 mm of rain in May. Average humidity is 77% and there are about 27 days with 6+ hours of sunshine.
Curated in Montreal
Tickets & experiences
Things to do in Montreal
Montreal, Canada. Live activities and tours from GetYourGuide, matched to this destination.