Last updated: June 24, 2025
In April, the average temperature in San Juan Capistrano, United States is a pleasant 16°C (61°F). Expect minimums of 11°C (52°F) and maximums reaching 31°C (88°F). With an average humidity of 70%, you'll find the air comfortably warm. However, be prepared for a little rain; 25 mm (1.0 in) of precipitation typically falls over 2 days.
In April in San Juan Capistrano, the average temperature is 16°C (61°F). The maximum can reach 31°C (88°F), while the minimum can drop as low as 11°C (52°F). This pleasant climate makes San Juan Capistrano an ideal destination for travelers seeking comfortable weather for outdoor activities and exploration.
In San Juan Capistrano in April, the precipitation amount is 25 mm (1.0 in) over the course of 2 days.
In San Juan Capistrano in April humidity is 70%. With an average temperature of 16°C (61°F), this humidity feels like a warm, damp blanket wrapping around you, making travel somewhat uncomfortable as you navigate the sticky air while trying to enjoy your surroundings.
In San Juan Capistrano in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in San Juan Capistrano.
UV Risk Categories
Weather in San Juan Capistrano varies notably across the year, with each month offering distinct climate conditions. This page compares April’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) | 60 mm (2.3 inches) | 74% | moderate |
| February Weather | 14°C (57°F) | 55 mm (2.2 inches) | 79% | high |
| March Weather | 14°C (58°F) | 54 mm (2.1 inches) | 75% | very high |
| April Weather | 16°C (61°F) | 25 mm (1.0 inches) | 70% | very high |
| May Weather | 16°C (62°F) | 14 mm (0.5 inches) | 70% | extreme |
| June Weather | 18°C (65°F) | 3 mm (0.1 inches) | 72% | extreme |
| July Weather | 21°C (70°F) | 3 mm (0.1 inches) | 73% | extreme |
| August Weather | 22°C (71°F) | 3 mm (0.1 inches) | 69% | very high |
| September Weather | 21°C (70°F) | 3 mm (0.1 inches) | 68% | very high |
| October Weather | 20°C (68°F) | 9 mm (0.4 inches) | 67% | high |
| November Weather | 17°C (63°F) | 22 mm (0.8 inches) | 68% | moderate |
| December Weather | 14°C (58°F) | 69 mm (2.7 inches) | 71% | moderate |