Last updated: June 18, 2025
In May, the average temperature in Montreal-Est, Canada hovers around 14°C (57°F). However, temperatures can vary significantly, with minimums dipping to -2°C (28°F) and maximums soaring up to 35°C (95°F). This month also sees an average precipitation of 96 mm (3.8 in) spread over 11 days, contributing to a humidity level of around 80%.
In May in Montreal-Est, the average temperature is 14°C (57°F). Maximum temperatures can reach 35°C (95°F), while minimums can drop as low as -2°C (28°F). Be prepared for a wide range of temperatures during your travels, from warm days to chilly nights.
In Montreal-Est in May, the precipitation amount is 96 mm (3.8 in) spread over 11 days, resulting in a significant accumulation of rainfall.
In Montreal-Est in May, humidity is 80%. With an average temperature of 14°C (57°F), this humidity feels like a warm, damp blanket wrapping around you, making travel uncomfortable and sticky, as sweat clings to your skin and the air feels heavy with moisture.
In Montreal-Est 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-Est.
UV Risk Categories
Weather in Montreal-Est varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Montreal-Est, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 83 mm (3.3 inches) | 93% | low |
| February Weather | -7°C (19°F) | 82 mm (3.2 inches) | 92% | moderate |
| March Weather | -2°C (28°F) | 84 mm (3.3 inches) | 86% | moderate |
| April Weather | 6°C (43°F) | 122 mm (4.8 inches) | 85% | high |
| May Weather | 14°C (57°F) | 96 mm (3.8 inches) | 80% | very high |
| June Weather | 19°C (66°F) | 96 mm (3.8 inches) | 74% | very high |
| July Weather | 22°C (72°F) | 91 mm (3.6 inches) | 76% | very high |
| August Weather | 21°C (70°F) | 101 mm (4.0 inches) | 75% | very high |
| September Weather | 16°C (61°F) | 69 mm (2.7 inches) | 78% | high |
| October Weather | 10°C (49°F) | 129 mm (5.1 inches) | 86% | moderate |
| November Weather | 1°C (34°F) | 115 mm (4.5 inches) | 88% | moderate |
| December Weather | -5°C (22°F) | 89 mm (3.5 inches) | 89% | low |