Last updated: June 18, 2025
In May, the average temperature in Greater Sudbury, Canada is a mild 11°C (53°F), but temperatures can vary widely, dipping to a frigid -7°C (20°F) and soaring up to a warm 32°C (89°F). Expect 82 mm (3.2 in) of precipitation spread over about 11 days, contributing to an average humidity of 73%. Whether you're braving the chill or enjoying the warmth, be prepared for a dynamic climate!
In May in Greater Sudbury, the average temperature is 11°C (53°F). The maximum can reach 32°C (89°F), while the minimum can drop as low as -7°C (20°F). Be prepared for a wide range of temperatures when traveling during this time.
In Greater Sudbury in May, the precipitation amount is 82 mm (3.2 in) over the course of 11 days.
In Greater Sudbury in May humidity is 73%. With an average temperature of 11°C (53°F), this humidity feels like a damp chill that can make outdoor activities less enjoyable, so travelers should dress in layers to stay comfortable while exploring.
In Greater Sudbury 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 Greater Sudbury.
UV Risk Categories
Weather in Greater Sudbury varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Greater Sudbury, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -11°C (13°F) | 45 mm (1.8 inches) | 96% | low |
| February Weather | -10°C (14°F) | 60 mm (2.4 inches) | 95% | moderate |
| March Weather | -5°C (24°F) | 51 mm (2.0 inches) | 89% | moderate |
| April Weather | 3°C (38°F) | 83 mm (3.3 inches) | 87% | high |
| May Weather | 11°C (53°F) | 82 mm (3.2 inches) | 73% | very high |
| June Weather | 17°C (62°F) | 96 mm (3.8 inches) | 69% | very high |
| July Weather | 20°C (68°F) | 94 mm (3.7 inches) | 66% | very high |
| August Weather | 18°C (65°F) | 96 mm (3.8 inches) | 71% | very high |
| September Weather | 14°C (57°F) | 90 mm (3.6 inches) | 76% | high |
| October Weather | 7°C (45°F) | 124 mm (4.9 inches) | 85% | moderate |
| November Weather | -2°C (29°F) | 81 mm (3.2 inches) | 89% | moderate |
| December Weather | -8°C (18°F) | 65 mm (2.5 inches) | 93% | low |