Last updated: August 27, 2025
In Castel San Pietro, Switzerland, the average temperature in April is a mild 13°C (56°F). You'll experience a range of temperatures, with minimums dipping to 0°C (33°F) and maximums reaching up to 25°C (78°F). Be prepared for some wet days, as 124 mm (4.9 in) of precipitation typically falls over 11 days. Don't forget, the average humidity sits at a comfortable 77%, adding to the overall atmospheric charm.
In April in Castel San Pietro, the average temperature is 13°C (56°F). Maximums can reach 25°C (78°F), while minimums can drop as low as 0°C (33°F). Packing layers is essential for travelers, as you may experience a wide range of temperatures throughout the day.
In Castel San Pietro in April, the precipitation amount is 124 mm (4.9 in) over the course of 11 days.
In Castel San Pietro in April humidity is 77%. With average temperature 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities sweaty and uncomfortable.
In Castel San Pietro in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Castel San Pietro, you can refer to this Hourly UV Index in Castel San Pietro.
UV Risk Categories
Weather in Castel San Pietro varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Castel San Pietro, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 42 mm (1.7 inches) | 88% | low |
| February Weather | 6°C (43°F) | 46 mm (1.8 inches) | 81% | moderate |
| March Weather | 9°C (48°F) | 88 mm (3.5 inches) | 76% | moderate |
| April Weather | 13°C (56°F) | 124 mm (4.9 inches) | 77% | high |
| May Weather | 17°C (63°F) | 143 mm (5.6 inches) | 74% | very high |
| June Weather | 22°C (72°F) | 161 mm (6.4 inches) | 71% | very high |
| July Weather | 24°C (75°F) | 164 mm (6.5 inches) | 67% | very high |
| August Weather | 24°C (75°F) | 136 mm (5.3 inches) | 64% | very high |
| September Weather | 19°C (66°F) | 146 mm (5.8 inches) | 74% | high |
| October Weather | 14°C (58°F) | 152 mm (6.0 inches) | 87% | moderate |
| November Weather | 9°C (49°F) | 169 mm (6.7 inches) | 88% | moderate |
| December Weather | 5°C (41°F) | 94 mm (3.7 inches) | 85% | low |