Last updated: June 24, 2025
In San Luis, United States, the average temperature in May hovers around 10°C (51°F), with a possible minimum of -8°C (18°F) and a maximum reaching 26°C (79°F). Expect about 42 mm (1.6 in) of precipitation spread over 8 days, contributing to an average humidity level of 62%. Stay prepared for a range of weather conditions!
In May in San Luis, the average temperature is 10°C (51°F). Maximums can reach 26°C (79°F), while minimums can drop as low as -8°C (18°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In San Luis in May, the precipitation amount is 42 mm (1.6 in) over a span of 8 days.
In San Luis in May humidity is 62%. With an average temperature of 10°C (51°F), this humidity feels like a cool, damp embrace, making it essential for travelers to dress in layers to stay comfortable while exploring.
In San Luis in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in San Luis.
UV Risk Categories
Weather in San Luis varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in San Luis, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 23 mm (0.9 inches) | 84% | moderate |
| February Weather | -4°C (25°F) | 25 mm (1.0 inches) | 84% | high |
| March Weather | 1°C (34°F) | 37 mm (1.5 inches) | 74% | very high |
| April Weather | 5°C (42°F) | 35 mm (1.4 inches) | 68% | extreme |
| May Weather | 10°C (51°F) | 42 mm (1.6 inches) | 62% | extreme |
| June Weather | 16°C (62°F) | 28 mm (1.1 inches) | 55% | extreme |
| July Weather | 18°C (65°F) | 71 mm (2.8 inches) | 54% | extreme |
| August Weather | 17°C (63°F) | 45 mm (1.8 inches) | 61% | extreme |
| September Weather | 14°C (57°F) | 31 mm (1.2 inches) | 70% | extreme |
| October Weather | 7°C (45°F) | 27 mm (1.1 inches) | 78% | very high |
| November Weather | 2°C (35°F) | 17 mm (0.7 inches) | 81% | moderate |
| December Weather | -4°C (25°F) | 23 mm (0.9 inches) | 85% | moderate |