Last updated: August 27, 2025
In December, the average temperature in Costesti, Romania hovers around -1°C (31°F), with a minimum plummeting to -15°C (6°F) and a maximum reaching up to 12°C (54°F). Expect 114 mm (4.5 in) of precipitation spread across approximately 13 days, coupled with a notably high average humidity of 90%. Prepare accordingly for a chilly and damp experience!
In December in Costesti, the average temperature is -1°C (31°F). The maximum can reach 12°C (54°F), and the minimum can be as low as -15°C (6°F). Be sure to pack warm clothing and prepare for chilly conditions if you're planning to visit during this time.
In Costesti in December, the total precipitation amount is 114 mm (4.5 in), distributed over the course of 13 days.
In Costesti in December humidity is 90%. With an average temperature of -1°C (31°F), this humidity feels like an icy blanket wrapping around you, making travel uncomfortable as the damp air seeps into your clothes, chilling you to the bone with every step you take.
In Costesti 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 Costesti, you can visit Hourly UV Index in Costesti.
UV Risk Categories
Weather in Costesti varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Costesti, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 59 mm (2.3 inches) | 91% | low |
| February Weather | 0°C (32°F) | 59 mm (2.3 inches) | 86% | moderate |
| March Weather | 2°C (37°F) | 79 mm (3.1 inches) | 83% | high |
| April Weather | 7°C (45°F) | 72 mm (2.8 inches) | 74% | high |
| May Weather | 12°C (54°F) | 174 mm (6.9 inches) | 70% | very high |
| June Weather | 16°C (62°F) | 161 mm (6.3 inches) | 67% | very high |
| July Weather | 18°C (64°F) | 195 mm (7.7 inches) | 65% | very high |
| August Weather | 19°C (66°F) | 112 mm (4.4 inches) | 51% | very high |
| September Weather | 14°C (58°F) | 60 mm (2.3 inches) | 58% | high |
| October Weather | 9°C (48°F) | 63 mm (2.5 inches) | 80% | moderate |
| November Weather | 4°C (40°F) | 75 mm (2.9 inches) | 88% | moderate |
| December Weather | -1°C (31°F) | 114 mm (4.5 inches) | 90% | low |