December Weather in Petrosani, Romania

Last updated: August 27, 2025

In December, the average temperature in Petrosani, Romania hovers around 4°C (40°F). Expect chilly days, with minimums plunging to -13°C (9°F) and maximums reaching a comfortable 19°C (67°F). Be prepared for 11 wet days, as precipitation totals 62 mm (2.4 in), while the air maintains a high average humidity of 84%.

December Temperature in Petrosani

In December in Petrosani, the average temperature is 4°C (40°F). Maximums can reach 19°C (67°F), while minimums can drop to as low as -13°C (9°F). It's essential to pack layers and prepare for temperature fluctuations when traveling to Petrosani during this time.

December Weather in Petrosani: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Petrosani, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Petrosani, December typically has an average temperature of 4°C (40°F), with highs reaching up to 19°C (67°F) and lows dropping to around -13°C (9°F).

Data source: Temperature data for Petrosani generated using information from the Copernicus Climate Change Service.

December Precipitation in Petrosani

In Petrosani in December, the precipitation amount is 62 mm (2.4 in) spread over 11 days.

December Precipitation Trends in Petrosani

The chart displays monthly precipitation patterns in Petrosani, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Petrosani, December typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Petrosani

In Petrosani in December, humidity is 84%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and requiring extra layers to stay warm and dry while traveling.

December Average Humidity in Petrosani

This chart illustrates the average monthly humidity levels in Petrosani, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Petrosani is approximately 84%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Petrosani

In Petrosani 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 Petrosani, you can visit Hourly UV Index in Petrosani.

Maximum UV Index Levels in Petrosani for December

The chart shows the monthly maximum UV Index (UVI) for Petrosani in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Petrosani typically reaches 2, which falls under the low exposure category.

Data source: Petrosani December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How December Weather in Petrosani Compares to Other Months

Weather in Petrosani varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Petrosani, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Petrosani, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	47 mm (1.8 inches)	84%	low
February Weather	4°C (39°F)	45 mm (1.8 inches)	81%	moderate
March Weather	6°C (44°F)	56 mm (2.2 inches)	79%	high
April Weather	11°C (52°F)	33 mm (1.3 inches)	75%	high
May Weather	17°C (62°F)	52 mm (2.0 inches)	77%	very high
June Weather	21°C (70°F)	99 mm (3.9 inches)	71%	very high
July Weather	23°C (74°F)	61 mm (2.4 inches)	69%	very high
August Weather	24°C (75°F)	20 mm (0.8 inches)	60%	very high
September Weather	20°C (67°F)	18 mm (0.7 inches)	63%	high
October Weather	14°C (57°F)	50 mm (2.0 inches)	76%	moderate
November Weather	8°C (48°F)	41 mm (1.6 inches)	81%	moderate
December Weather	4°C (40°F)	62 mm (2.4 inches)	84%	low