Last updated: August 23, 2025
In December, the average temperature in Monterosso Grana, Italy hovers around -2°C (29°F). Expect chilly conditions, with temperatures dipping as low as -15°C (6°F) and reaching a maximum of 8°C (47°F). The month brings about 89 mm (3.5 in) of precipitation spread over 10 days, contributing to an average humidity of 90%. Prepare for a brisk and damp atmosphere!
In December in Monterosso Grana, the average temperature is -2°C (29°F), with maximums reaching 8°C (47°F) and minimums dropping as low as -15°C (6°F). Travelers should be prepared for chilly weather and pack warm clothing for their visit.
In Monterosso Grana in December, the precipitation amount is 89 mm (3.5 in) over a period of 10 days.
In Monterosso Grana in December, humidity is 90%. With an average temperature of -2°C (29°F), this humidity feels like an icy breath enveloping you, making every step outdoors feel even colder and more biting, while also creating a heavy, wet atmosphere that can dampen your spirits for traveling.
In Monterosso Grana 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 Monterosso Grana, you can visit Hourly UV Index in Monterosso Grana.
UV Risk Categories
Weather in Monterosso Grana varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Monterosso Grana, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 59 mm (2.3 inches) | 91% | moderate |
| February Weather | 1°C (34°F) | 65 mm (2.6 inches) | 87% | moderate |
| March Weather | 2°C (36°F) | 97 mm (3.8 inches) | 84% | high |
| April Weather | 5°C (42°F) | 132 mm (5.2 inches) | 83% | very high |
| May Weather | 10°C (51°F) | 201 mm (7.9 inches) | 78% | very high |
| June Weather | 15°C (59°F) | 196 mm (7.7 inches) | 75% | very high |
| July Weather | 17°C (63°F) | 170 mm (6.7 inches) | 72% | very high |
| August Weather | 17°C (62°F) | 117 mm (4.6 inches) | 63% | very high |
| September Weather | 13°C (55°F) | 128 mm (5.1 inches) | 73% | very high |
| October Weather | 9°C (48°F) | 128 mm (5.0 inches) | 89% | high |
| November Weather | 2°C (37°F) | 175 mm (6.9 inches) | 90% | moderate |
| December Weather | -2°C (29°F) | 89 mm (3.5 inches) | 90% | low |