Last updated: August 27, 2025
In April, the average temperature in San Ildefonso, Spain hovers around 9°C (49°F). Prepare for a chilly range where the minimum can dip to -5°C (24°F), while the maximum may reach a pleasant 24°C (75°F). With 113 mm (4.4 in) of precipitation spread over 16 days, expect some wet weather. The atmosphere tends to be quite humid, with an average humidity of 74%, making it feel even cooler.
In April in San Ildefonso, the average temperature is 9°C (49°F), with maximums reaching up to 24°C (75°F) and minimums dropping as low as -5°C (24°F). Travelers should be prepared for a wide range of temperatures, making layering essential for comfort during their stay.
In San Ildefonso in April, the precipitation amount is 113 mm (4.4 in) spread over 16 days.
In San Ildefonso in April humidity is 74%. With an average temperature of 9°C (49°F), this humidity feels like a chilly embrace that can make outdoor activities somewhat uncomfortable; travelers may find themselves needing to dress in layers to stay warm while also coping with the dampness in the air.
In San Ildefonso in April, 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 San Ildefonso.
UV Risk Categories
Weather in San Ildefonso varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in San Ildefonso, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 55 mm (2.2 inches) | 90% | moderate |
| February Weather | 5°C (42°F) | 55 mm (2.2 inches) | 86% | moderate |
| March Weather | 7°C (44°F) | 73 mm (2.9 inches) | 79% | high |
| April Weather | 9°C (49°F) | 113 mm (4.4 inches) | 74% | very high |
| May Weather | 14°C (57°F) | 67 mm (2.6 inches) | 71% | very high |
| June Weather | 18°C (65°F) | 59 mm (2.3 inches) | 63% | extreme |
| July Weather | 22°C (71°F) | 23 mm (0.9 inches) | 59% | extreme |
| August Weather | 22°C (72°F) | 25 mm (1.0 inches) | 58% | very high |
| September Weather | 17°C (63°F) | 44 mm (1.7 inches) | 65% | very high |
| October Weather | 12°C (55°F) | 63 mm (2.5 inches) | 77% | high |
| November Weather | 6°C (44°F) | 88 mm (3.4 inches) | 87% | moderate |
| December Weather | 5°C (41°F) | 84 mm (3.3 inches) | 90% | low |