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December Weather in Mercina, Romania

Last updated: August 27, 2025

In December, the average temperature in Mercina, Romania hovers around 3°C (39°F). The weather can be quite variable, with minimums dipping to -8°C (19°F) and highs reaching 17°C (62°F). Prepare for some rain, as 86 mm (3.4 in) of precipitation typically falls over 14 days. Additionally, expect high humidity levels averaging around 91%, creating a rather damp atmosphere.

December Temperature in Mercina

In December in Mercina, the average temperature is 3°C (39°F). Maximums can reach 17°C (62°F), while minimums can drop as low as -8°C (19°F). Be prepared for a mix of chilly and mild weather if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Mercina, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mercina, December typically has an average temperature of 3°C (39°F), with highs reaching up to 17°C (62°F) and lows dropping to around -8°C (19°F).
JanFebMarAprMayJunJulAugSepOctNovDec323944546270737465554738
Data source: Temperature data for Mercina generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Mercina

In Mercina in December, the precipitation amount is 86 mm (3.4 in) over the course of 14 days.

December Precipitation Trends in Mercina

The chart displays monthly precipitation patterns in Mercina, 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 Mercina, December typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec545558569084895345534686
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mercina

In Mercina in December humidity is 91%. With an average temperature of 3°C (39°F), this humidity feels like a damp chill that penetrates through layers of clothing, making travel uncomfortable and necessitating extra precautions to stay warm and dry.

December Average Humidity in Mercina

This chart illustrates the average monthly humidity levels in Mercina, 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 Mercina is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%86%82%73%74%70%70%59%67%83%89%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mercina

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

Maximum UV Index Levels in Mercina for December

The chart shows the monthly maximum UV Index (UVI) for Mercina 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 Mercina typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987532
Data source: Mercina 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 Mercina Compares to Other Months

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

This table compares monthly weather conditions in Mercina, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)54 mm (2.1 inches)89%low
February Weather4°C (39°F)55 mm (2.2 inches)86%moderate
March Weather7°C (44°F)58 mm (2.3 inches)82%moderate
April Weather12°C (54°F)56 mm (2.2 inches)73%high
May Weather17°C (62°F)89 mm (3.5 inches)74%very high
June Weather21°C (70°F)84 mm (3.3 inches)70%very high
July Weather23°C (73°F)89 mm (3.5 inches)70%very high
August Weather23°C (74°F)53 mm (2.1 inches)59%very high
September Weather18°C (65°F)45 mm (1.8 inches)67%high
October Weather13°C (56°F)53 mm (2.1 inches)82%moderate
November Weather8°C (47°F)46 mm (1.8 inches)89%moderate
December Weather3°C (39°F)86 mm (3.4 inches)91%low

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