Last updated: August 23, 2025
In December, the average temperature in San Giacomo-Marinella, Italy hovers around 9°C (49°F). Visitors can expect a temperature range with a minimum of 1°C (35°F) and a pleasant maximum of 18°C (65°F). However, be prepared for some rain; the area sees around 82 mm (3.2 in) of precipitation distributed over 12 days. With an average humidity level of 78%, it’s a time perfect for cozy indoor activities or layering up for outdoor exploration!
In December in San Giacomo-Marinella, the average temperature is 9°C (49°F), with maximums reaching 18°C (65°F) and minimums dropping as low as 1°C (35°F). It's a great time to dress in layers and enjoy the mild weather while exploring the area.
In San Giacomo-Marinella in December, the precipitation amount is 82 mm (3.2 in) occurring over a span of 12 days.
In San Giacomo-Marinella in December, humidity is 78%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while traveling, as the cool air combines with the moisture to create a brisk and invigorating atmosphere.
In San Giacomo-Marinella 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 San Giacomo-Marinella, you can visit Hourly UV Index in San Giacomo-Marinella.
UV Risk Categories
Weather in San Giacomo-Marinella varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Giacomo-Marinella, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (45°F) | 71 mm (2.8 inches) | 78% | moderate |
| February Weather | 9°C (48°F) | 86 mm (3.4 inches) | 71% | moderate |
| March Weather | 10°C (49°F) | 102 mm (4.0 inches) | 70% | high |
| April Weather | 13°C (55°F) | 77 mm (3.0 inches) | 73% | very high |
| May Weather | 17°C (63°F) | 45 mm (1.8 inches) | 72% | very high |
| June Weather | 22°C (72°F) | 34 mm (1.3 inches) | 67% | very high |
| July Weather | 25°C (77°F) | 22 mm (0.9 inches) | 64% | very high |
| August Weather | 25°C (78°F) | 25 mm (1.0 inches) | 61% | very high |
| September Weather | 21°C (70°F) | 59 mm (2.3 inches) | 68% | very high |
| October Weather | 16°C (62°F) | 142 mm (5.6 inches) | 73% | high |
| November Weather | 13°C (56°F) | 167 mm (6.6 inches) | 77% | moderate |
| December Weather | 9°C (49°F) | 82 mm (3.2 inches) | 78% | low |