Last updated: June 18, 2025
In May, the average temperature in Montreal-Ouest, Canada hovers around 13°C (56°F). Temperatures can vary significantly, with a minimum of 0°C (33°F) and a maximum reaching 30°C (87°F). Expect 96 mm (3.8 in) of precipitation spread across 11 days, contributing to an average humidity of 80%. Enjoy the mild, yet sometimes unpredictable, climate!
In May in Montreal-Ouest, the average temperature is 13°C (56°F). The maximum can reach 30°C (87°F), while the minimum can drop as low as 0°C (33°F). Be sure to pack for a wide range of temperatures during your travels!
In Montreal-Ouest in May, the precipitation amount is 96 mm (3.8 in) spread over 11 days, resulting in a significant accumulation of rainfall.
In Montreal-Ouest in May humidity is 80%. With average temperature 13°C (56°F) this humidity feels like a damp chill that seeps into your bones, making outdoor exploration more challenging and necessitating layered clothing for comfort.
In Montreal-Ouest in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Montreal-Ouest.
UV Risk Categories
Weather in Montreal-Ouest varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Montreal-Ouest, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 84 mm (3.3 inches) | 93% | low |
| February Weather | -7°C (20°F) | 85 mm (3.3 inches) | 92% | moderate |
| March Weather | -2°C (29°F) | 85 mm (3.3 inches) | 86% | moderate |
| April Weather | 6°C (42°F) | 120 mm (4.7 inches) | 85% | high |
| May Weather | 13°C (56°F) | 96 mm (3.8 inches) | 80% | very high |
| June Weather | 19°C (67°F) | 97 mm (3.8 inches) | 74% | very high |
| July Weather | 22°C (73°F) | 89 mm (3.5 inches) | 76% | very high |
| August Weather | 21°C (71°F) | 98 mm (3.9 inches) | 75% | very high |
| September Weather | 17°C (62°F) | 69 mm (2.7 inches) | 78% | high |
| October Weather | 10°C (51°F) | 132 mm (5.2 inches) | 86% | moderate |
| November Weather | 2°C (36°F) | 115 mm (4.5 inches) | 88% | moderate |
| December Weather | -4°C (24°F) | 89 mm (3.5 inches) | 89% | low |