Montreal Weather in May
Canada · Humid Continental climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
May in Montreal sees average temperatures ranging from a low of 8.7°C (47.7°F) to a high of 19.8°C (67.6°F), with a mean of 14.3°C (57.7°F). Compared to the annual average of 8.1°C (46.6°F), this month is 6.2°C warmer than the yearly norm. Precipitation averages 60.6mm, making it approximately 35.0mm drier than the monthly average of 95.0mm. This is the driest month of the year, with just 60.6mm of precipitation. The city receives an average of 10.8 hours of sunshine per day during May, with relative humidity averaging 60.1%. Wind speeds reach an average maximum of 19.7 km/h. Snowfall averages 0.2cm during May, which can affect travel plans and outdoor activities. For travelers, this month offers a temperature experience in Montreal, with drier-than-average conditions compared to the rest of the year.
Montreal's climate offers four distinct seasons with dramatic temperature swings. I visited during the summer festival season and found the city alive with outdoor energy. The data shows that the best time to visit is May to September, when temperatures are warm and the city's famous festivals are in full swing. The winters are cold and snowy, but the city's underground city and indoor culture provide warm alternatives.
May vs Adjacent Months
| Metric | April | May | June |
|---|---|---|---|
| Mean Temp | 6.4°C (43.5°F) | 14.3°C (57.7°F) | 19.7°C (67.5°F) |
| Rainfall | 114.1mm | 60.6mm | 118.8mm |
| Sunshine | 8.2 hrs | 10.8 hrs | 10.7 hrs |
| Humidity | 65.2% | 60.1% | 67.6% |
| Wind | 22.2 km/h | 19.7 km/h | 19.2 km/h |
| Rainy Days | 14.8 | 13.4 | 17.8 |
| Snowfall | 10.5 cm | 0.2 cm | 0.0 cm |
Seasonal Context
May falls in Spring in the Northern Hemisphere. Spring is a transitional season with temperatures rising from winter lows. For travelers visiting Montreal in May, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Montreal in May?
The average temperature in Montreal during May ranges from 8.7°C (47.7°F) to 19.8°C (67.6°F), with a mean of 14.3°C (57.7°F).
How much does it rain in Montreal in May?
Montreal receives an average of 60.6mm of precipitation in May, spread across approximately 13.4 rainy days. This is the driest month of the year.
What should I pack for Montreal in May?
Based on May weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is May a good time to visit Montreal?
May is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Montreal
Cities with Similar May Climate (Humid Continental)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 45.5°, -73.57°. Timezone: America/Montreal. Last updated: 2026-07-30.