Last updated: August 26, 2025
In May, the average temperature in San Juan Capistrano, Mexico is a pleasant 23°C (73°F), with variations that can range from a cool 8°C (46°F) to a warm 36°C (97°F). Expect a modest precipitation amount of 9 mm (0.4 in) spread across 2 days, and enjoy relatively low average humidity of 55% for a comfortable climate.
In May in San Juan Capistrano, the average temperature is 23°C (73°F), with maximums reaching up to 36°C (97°F) and minimums dropping as low as 8°C (46°F). This is an ideal time for travelers to enjoy a variety of outdoor activities while being prepared for fluctuating temperatures.
In San Juan Capistrano in May, the precipitation amount is 9 mm (0.4 in) over the course of 2 days.
In San Juan Capistrano in May, humidity is 55%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, invigorating for outdoor adventures but also prompting travelers to stay hydrated and seek occasional shade during their explorations.
In San Juan Capistrano in May, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Juan Capistrano, you can check here.
UV Risk Categories
Weather in San Juan Capistrano varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in San Juan Capistrano, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 14°C (58°F) | 16 mm (0.6 inches) | 71% | very high |
| February Weather | 16°C (61°F) | 16 mm (0.6 inches) | 64% | extreme |
| March Weather | 19°C (66°F) | 4 mm (0.2 inches) | 49% | extreme |
| April Weather | 20°C (69°F) | 1 mm (0.0 inches) | 47% | extreme |
| May Weather | 23°C (73°F) | 9 mm (0.4 inches) | 55% | extreme |
| June Weather | 23°C (74°F) | 45 mm (1.8 inches) | 77% | extreme |
| July Weather | 21°C (71°F) | 128 mm (5.0 inches) | 82% | extreme |
| August Weather | 22°C (72°F) | 81 mm (3.2 inches) | 83% | extreme |
| September Weather | 21°C (70°F) | 81 mm (3.2 inches) | 86% | extreme |
| October Weather | 20°C (69°F) | 44 mm (1.7 inches) | 83% | extreme |
| November Weather | 17°C (64°F) | 14 mm (0.6 inches) | 80% | very high |
| December Weather | 15°C (58°F) | 12 mm (0.5 inches) | 83% | very high |