Last updated: August 26, 2025
In San Juan Capistrano, Mexico, the average temperature in August is a pleasant 22°C (72°F). You can expect a minimum of 13°C (56°F) and a maximum of 32°C (90°F). This month also sees an average precipitation of 81 mm (3.2 in), spread over approximately 18 days, with an average humidity level of 83%. Enjoy the mild climate!
In August in San Juan Capistrano, the average temperature is 22°C (72°F). Maximums can reach 32°C (90°F), and minimums can drop as low as 13°C (56°F). This moderate climate makes it an ideal time for outdoor adventures and sightseeing.
In San Juan Capistrano in August, the precipitation amount is 81 mm (3.2 in), occurring over the span of 18 days.
In San Juan Capistrano in August humidity is 83%. With average temperature 22°C (72°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities challenging and prompting travelers to seek shade or frequent stops for hydration.
In San Juan Capistrano in August, 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 August’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 |