Last updated: August 23, 2025
In Diano Castello, Italy, the average temperature in December hovers around 7°C (45°F). Expect minimum temperatures to drop as low as -3°C (26°F), while highs can reach up to 16°C (61°F). During this month, precipitation amounts to 106 mm (4.2 in), spread over 9 days, contributing to an average humidity of 76%. Prepare for a mix of chilly days and occasional rainfall!
In December in Diano Castello, the average temperature is 7°C (45°F). Maximums can reach 16°C (61°F) and minimums can be as low as -3°C (26°F). This means travelers should be prepared for a mix of cool and mild weather, making it a great time for layering and enjoying outdoor activities.
In Diano Castello in December, the total precipitation amount is 106 mm (4.2 in), spread over the course of 9 days.
In Diano Castello in December, humidity is 76%. With an average temperature of 7°C (45°F), this humidity feels like a chilly embrace that can make even short walks feel damp and uncomfortable, requiring travelers to dress in layers and prepare for sudden changes in weather.
In Diano Castello in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Diano Castello, you can visit Hourly UV Index in Diano Castello.
UV Risk Categories
Weather in Diano Castello varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Diano Castello, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 6°C (43°F) | 61 mm (2.4 inches) | 80% | low |
| February Weather | 8°C (46°F) | 53 mm (2.1 inches) | 72% | moderate |
| March Weather | 9°C (48°F) | 83 mm (3.3 inches) | 69% | high |
| April Weather | 12°C (53°F) | 93 mm (3.7 inches) | 74% | high |
| May Weather | 15°C (59°F) | 105 mm (4.1 inches) | 75% | very high |
| June Weather | 19°C (67°F) | 71 mm (2.8 inches) | 72% | very high |
| July Weather | 22°C (71°F) | 76 mm (3.0 inches) | 69% | very high |
| August Weather | 22°C (72°F) | 47 mm (1.9 inches) | 68% | very high |
| September Weather | 19°C (66°F) | 81 mm (3.2 inches) | 70% | high |
| October Weather | 15°C (59°F) | 117 mm (4.6 inches) | 77% | moderate |
| November Weather | 10°C (51°F) | 167 mm (6.6 inches) | 80% | moderate |
| December Weather | 7°C (45°F) | 106 mm (4.2 inches) | 76% | low |