Last updated: June 18, 2025
In May, the average temperature in Amherst, Canada hovers around 10°C (49°F), offering a mild climate. Expect fluctuations, with minimums dipping to -4°C (25°F) and maximums reaching a comfortable 27°C (80°F). Prepare for a bit of wet weather, as the month brings about 97 mm (3.8 in) of precipitation over 14 days, coupled with an average humidity of 82%.
In May, in Amherst, the average temperature is 10°C (49°F). The maximum can reach 27°C (80°F), and the minimum can be as low as -4°C (25°F). Be prepared for a wide range of temperatures and pack accordingly for your travels!
In Amherst in May, the total precipitation amount is 97 mm (3.8 in) spread over 14 days.
In Amherst in May, humidity is 82%. With an average temperature of 10°C (49°F), this humidity feels like a damp chill that clings to your skin, making every step heavy and every breath feel cooler than the air itself, which can dampen the thrill of exploring but also lends a unique atmosphere to your travels.
In Amherst 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 Amherst.
UV Risk Categories
Weather in Amherst varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Amherst, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 86 mm (3.4 inches) | 82% | low |
| February Weather | -5°C (24°F) | 101 mm (4.0 inches) | 83% | moderate |
| March Weather | -2°C (29°F) | 78 mm (3.1 inches) | 82% | moderate |
| April Weather | 5°C (41°F) | 94 mm (3.7 inches) | 82% | high |
| May Weather | 10°C (49°F) | 97 mm (3.8 inches) | 82% | very high |
| June Weather | 15°C (60°F) | 94 mm (3.7 inches) | 84% | very high |
| July Weather | 19°C (66°F) | 78 mm (3.1 inches) | 86% | very high |
| August Weather | 19°C (67°F) | 78 mm (3.1 inches) | 85% | very high |
| September Weather | 15°C (60°F) | 98 mm (3.9 inches) | 83% | high |
| October Weather | 9°C (49°F) | 80 mm (3.2 inches) | 83% | moderate |
| November Weather | 3°C (38°F) | 143 mm (5.6 inches) | 85% | moderate |
| December Weather | -3°C (28°F) | 105 mm (4.1 inches) | 83% | low |