Last updated: June 24, 2025
In May, the average temperature in Plymouth, United States hovers around 15°C (60°F). However, be prepared for a range of temperatures, with a minimum dipping to -2°C (29°F) and a maximum soaring up to 33°C (91°F). During this month, you can expect about 117 mm (4.6 in) of precipitation over 15 days, contributing to an average humidity level of 80%. Stay ready for both sunny days and unexpected showers!
In May in Plymouth, the average temperature is 15°C (60°F). Maximums can reach 33°C (91°F), while minimums can dip as low as -2°C (29°F). This range makes it ideal for travelers who enjoy experiencing both mild and extreme temperatures.
In Plymouth in May, the total precipitation amount is 117 mm (4.6 in), occurring over the course of 15 days.
In Plymouth in May humidity is 80%. With an average temperature of 15°C (60°F), this humidity feels like a warm, sticky embrace that can make even the simplest stroll feel like a workout, leaving travelers yearning for a refreshing breeze or shade to escape the weight of the air.
In Plymouth 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 Plymouth.
UV Risk Categories
Weather in Plymouth varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Plymouth, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 64 mm (2.5 inches) | 88% | low |
| February Weather | -2°C (29°F) | 66 mm (2.6 inches) | 87% | moderate |
| March Weather | 3°C (38°F) | 73 mm (2.9 inches) | 85% | moderate |
| April Weather | 8°C (47°F) | 86 mm (3.4 inches) | 86% | very high |
| May Weather | 15°C (60°F) | 117 mm (4.6 inches) | 80% | very high |
| June Weather | 21°C (71°F) | 85 mm (3.3 inches) | 80% | very high |
| July Weather | 24°C (75°F) | 91 mm (3.6 inches) | 80% | very high |
| August Weather | 23°C (73°F) | 74 mm (2.9 inches) | 80% | very high |
| September Weather | 19°C (66°F) | 62 mm (2.4 inches) | 80% | high |
| October Weather | 12°C (55°F) | 98 mm (3.9 inches) | 84% | moderate |
| November Weather | 4°C (40°F) | 77 mm (3.0 inches) | 89% | moderate |
| December Weather | 0°C (33°F) | 54 mm (2.1 inches) | 86% | low |