Last updated: August 27, 2025
In December, the average temperature in Dianu, Romania hovers around 1°C (35°F), with extremes ranging from a chilly -12°C (10°F) to a milder 12°C (55°F). Prepare for some wet days, as 108 mm (4.3 in) of precipitation typically falls over 13 days, contributing to a high average humidity of 90%.
In December in Dianu, the average temperature is 1°C (35°F). The maximum can reach 12°C (55°F) while the minimum can be as low as -12°C (10°F). Travelers should pack warm clothing and be prepared for cold weather conditions.
In Dianu in December, the precipitation amount is 108 mm (4.3 in), occurring over a span of 13 days.
In Dianu in December humidity is 90%. With an average temperature of 1°C (35°F), this humidity feels like an icy blanket clinging to your skin, making travel uncomfortable and every breath a struggle against the damp chill.
In Dianu 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 Dianu, you can visit Hourly UV Index in Dianu.
UV Risk Categories
Weather in Dianu varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Dianu, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (31°F) | 58 mm (2.3 inches) | 91% | low |
| February Weather | 2°C (36°F) | 56 mm (2.2 inches) | 86% | moderate |
| March Weather | 5°C (42°F) | 77 mm (3.0 inches) | 83% | high |
| April Weather | 10°C (50°F) | 58 mm (2.3 inches) | 74% | high |
| May Weather | 15°C (59°F) | 150 mm (5.9 inches) | 70% | very high |
| June Weather | 19°C (67°F) | 132 mm (5.2 inches) | 67% | very high |
| July Weather | 21°C (69°F) | 114 mm (4.5 inches) | 65% | very high |
| August Weather | 21°C (71°F) | 55 mm (2.2 inches) | 51% | very high |
| September Weather | 17°C (62°F) | 40 mm (1.6 inches) | 58% | high |
| October Weather | 11°C (52°F) | 63 mm (2.5 inches) | 80% | moderate |
| November Weather | 6°C (43°F) | 76 mm (3.0 inches) | 88% | moderate |
| December Weather | 1°C (35°F) | 108 mm (4.3 inches) | 90% | low |