Last updated: August 27, 2025
In December, the average temperature in Ulmi, Romania hovers around 3°C (37°F). Expect chilly conditions, with minimums plummeting to -13°C (8°F) and maximums reaching up to 16°C (61°F). During this month, precipitation amounts to 61 mm (2.4 in) over approximately 10 days, contributing to a high average humidity of 90%. Stay prepared for a damp and cool climate!
In December in Ulmi, the average temperature is 3°C (37°F). The maximum can reach 16°C (61°F) and the minimum can be as low as -13°C (8°F). Travelers should be prepared for chilly weather and consider layering for comfort during this time.
In Ulmi in December, the precipitation amount is 61 mm (2.4 in) over a span of 10 days.
In Ulmi in December, humidity is 90%. With an average temperature of 3°C (37°F), this humidity feels like a heavy blanket wrapped around you, making travel feel cumbersome and draining, as the dampness clings to your skin and the cold bites through your layers.
In Ulmi 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 Ulmi, you can visit Hourly UV Index in Ulmi.
UV Risk Categories
Weather in Ulmi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ulmi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 0°C (32°F) | 44 mm (1.7 inches) | 91% | low |
| February Weather | 3°C (39°F) | 39 mm (1.5 inches) | 86% | moderate |
| March Weather | 7°C (45°F) | 69 mm (2.7 inches) | 83% | moderate |
| April Weather | 12°C (55°F) | 41 mm (1.6 inches) | 74% | high |
| May Weather | 18°C (64°F) | 80 mm (3.1 inches) | 70% | very high |
| June Weather | 22°C (71°F) | 115 mm (4.5 inches) | 67% | very high |
| July Weather | 24°C (75°F) | 76 mm (3.0 inches) | 65% | very high |
| August Weather | 25°C (77°F) | 35 mm (1.4 inches) | 51% | very high |
| September Weather | 20°C (68°F) | 14 mm (0.6 inches) | 58% | high |
| October Weather | 13°C (56°F) | 65 mm (2.6 inches) | 80% | moderate |
| November Weather | 7°C (46°F) | 42 mm (1.7 inches) | 88% | moderate |
| December Weather | 3°C (37°F) | 61 mm (2.4 inches) | 90% | low |