December Weather in Costinesti, Romania

Last updated: August 27, 2025

In December, Costinesti, Romania experiences a mix of chilly temperatures and higher humidity. With maximums reaching 16°C (62°F) and averages around 7°C (45°F), visitors can expect a wintery feel, particularly when the thermometer dips to a low of -5°C (24°F). The month is also characterized by notable precipitation, with 72 mm (2.8 in) spread over approximately 13 days, leading to an 84% humidity level that enhances the coastal winter atmosphere. This unique blend of cold and dampness creates a distinct charm in Costinesti, ideal for those looking to experience a quieter season by the sea.

December Temperature in Costinesti

In December, Costinesti, Romania experiences a notable transition as the year nears its end, with temperatures dipping to a minimum of -5°C (24°F) and peaking at a moderate 16°C (62°F). The average temperature hovers around 7°C (45°F), signaling the onset of winter and a shift from the milder climes of November. This month serves as a bridge to colder days ahead, with the minimum temperature gradually becoming the lowest of the year, reflecting a consistent downward trend from the slightly warmer autumn months. Overall, December’s weather invites a cozy ambiance, perfect for enjoying the festive season amidst the charm of Costinesti.

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

The chart illustrates December temperature patterns in Costinesti, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Costinesti, December typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec384144506170757670615245
Data source: Temperature data for Costinesti 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 Costinesti

In Costinesti, Romania, December marks a notable shift in precipitation patterns, as the region experiences an increase in both rainfall and rainy days compared to the preceding months. With 72 mm (2.8 in) of precipitation over 13 days, December stands out as one of the wetter months of the year. This spike follows the trends seen in November, which had 60 mm (2.4 in), signaling the arrival of winter rains. As temperatures drop and the days grow shorter, the consistent rainfall provides a lush rejuvenation to the coastal landscape, transforming it from the dry, balmy days of summer into a more dynamic and vibrant winter scenery.

December Precipitation Trends in Costinesti

The chart displays monthly precipitation patterns in Costinesti, 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 Costinesti, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec57414630317156922576072
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Costinesti

As December arrives in Costinesti, Romania, the humidity levels return to a notable 84%, mirroring the moisture-rich atmosphere typical of January and November. This late autumn surge contrasts with the drier summer months, where July and August recorded the lowest averages at just 69% and 60%, respectively. The gradual decline in humidity from spring's 75% to summer's comfortable lows signifies the seasonal shift towards cooler conditions. Interestingly, as the year concludes, the increased humidity levels in December echo the phenomenon of winter's approach, when the air often feels more thick and damp. Overall, December’s humidity captures a climate in transition, laying the groundwork for the cold, wet winter ahead.

December Average Humidity in Costinesti

This chart illustrates the average monthly humidity levels in Costinesti, 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 Costinesti is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%81%79%75%77%71%69%60%63%76%81%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Costinesti

In December, Costinesti, Romania experiences a low UV Index of 2, with a corresponding burn time of 45 minutes, making it a safer month for sun exposure. This trend reflects a significant decrease from the summer months, where the UV Index reached as high as 9, requiring careful management of sun exposure to prevent skin damage. As the year transitions from the intense summer rays to winter's milder sunlight, residents and visitors alike can enjoy the outdoors without the immediate threat of UV-related harm. For detailed insights and updates on daily UV levels, check out the Costinesti UV Index.

Maximum UV Index Levels in Costinesti for December

The chart shows the monthly maximum UV Index (UVI) for Costinesti 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 Costinesti typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789997532
Data source: Costinesti 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.

December Sunshine in Costinesti

In Costinesti, Romania, the sun shines less brightly in December, offering about 199 hours of sunlight as the year draws to a close. This marks a noticeable dip from the peak of July, which enjoys the highest solar embrace with 433 hours. As the seasons transition from summer warmth to winter's chill, the sunlight steadily wanes—from a flourishing 407 hours in May to a more subdued atmosphere in December. Yet, this decline isn’t without charm; it invites a sense of cozy introspection amid the festive spirit of the holiday season. While the days may be shorter and less illuminated, the lingering warmth of the summer sun still whispers through the crisp winter air, reminding us of brighter days ahead.

Monthly Sunshine Duration in Costinesti: December Highlighted

The December sunshine duration represents the total number of hours Costinesti experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec158h230h301h356h407h416h433h406h344h295h220h199h
Data source: Costinesti December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Costinesti During December

In Costinesti, Romania, the likelihood of sunny weather in December diminishes to 26%, mirroring the lower sun probabilities seen in the winter months. Following a trend of increasing sunshine from the chilly January (26%) through the vibrant summer peak in July (78%), the chances take a downturn as the year winds down. While early spring sees a modest rise, consistently higher percentages appear from May to September, creating a stark contrast against December's gloomy prospects. As the year draws to a close, those hoping for sunny days in Costinesti may need to temper their expectations, with cloudier skies becoming the seasonal norm.

Percentage of Sunny Days in December in Costinesti

The chart illustrates the percentage of sunny days in Costinesti throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Costinesti experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec26%35%42%42%46%46%78%76%58%31%32%26%
Data source: Costinesti December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Costinesti in December

As the year comes to a close, December in Costinesti, Romania, brings a subtle shift in daylight, with a decrease to just 8 hours of sunlight per day. This marks the culmination of a gradual decline that began in September, where the length of daylight began to lessen after the summer's peak in June and July, each enjoying 15 hours of sunlight. The winter months emphasize a cozy, introspective atmosphere, transitioning from November's 9 hours to December's early dusk. As days shorten, one can embrace the enchanting winter charm that envelops Costinesti, a reminder of the seasonal cycles that define this coastal town's unique rhythm.

Average Daylight Hours in Costinesti for December

The chart illustrates the variation in daylight duration in Costinesti throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 17m10h 27m11h 56m13h 27m14h 45m15h 24m15h 4m13h 55m12h 28m10h 57m9h 37m8h 55m
Data source: Costinesti daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Costinesti

As December descends upon Costinesti, Romania, the winds begin to pick up, bringing an invigorating change to the coastal atmosphere. With an average wind speed of 6.7 m/s (15 mph), December stands as one of the windiest months of the year. This increase is particularly noteworthy against the backdrop of earlier months; for instance, the wind speeds were more subdued during the warmer summer months, averaging around 4.3 to 4.6 m/s (10 mph). The gentle breeze of spring and summer gives way to December's brisk gusts, heralding the arrival of winter and making the seaside both refreshing and bracing. This trend illustrates how the season transitions from the calm of fall into a more dynamic winter climate, inviting both locals and visitors to embrace the unique charm of Costinesti during this time of year.

Average December Wind Speed in Costinesti

The chart displays monthly wind speed patterns in Costinesti, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec6.45.25.74.34.34.44.64.35.35.95.16.7 m/s
Data source: Costinesti December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Costinesti Compares to Other Months

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

December and January present contrasting yet somewhat similar weather conditions. December typically sees a minimum temperature of -5°C (24°F) and an average of 7°C (45°F), with maximums reaching 16°C (62°F). This month experiences around 72 mm (2.8 in) of precipitation over 13 days, accompanied by a high humidity level of 84%. In contrast, January is colder, with minimum temperatures dropping to -10°C (15°F) and an average of 4°C (39°F), while the maximums are slightly lower at 14°C (57°F). Precipitation decreases to 57 mm (2.2 in) over just 8 days, but humidity remains constant at 84%. For a more detailed look at January conditions, you can check Costinesti weather in January.

December weather is characterized by slightly milder temperatures, with averages around 7°C (45°F) and a maximum of 16°C (62°F), compared to February's cooler averages of 5°C (41°F) and max temperatures of 15°C (59°F). Precipitation is higher in December, totaling 72 mm (2.8 in) over about 13 days, while February sees only 41 mm (1.6 in) spread across 7 days, indicating a drier month overall. Humidity levels in both months remain relatively high, with December at 84% and February slightly lower at 81%. For more detailed insights on the conditions during February, you can check Costinesti weather in February.

December and March present quite different weather conditions, despite sharing a similar maximum temperature of around 16°C (61°F). In December, temperatures can dip to a minimum of -5°C (24°F), with an average of 7°C (45°F) and higher humidity levels of 84%. This month also sees more precipitation, averaging 72 mm (2.8 in) over 13 days, making it a wetter month. In contrast, March tends to be slightly cooler with temperatures ranging from a minimum of -9°C (17°F) to an average of 6°C (44°F) and a maximum of 16°C (61°F). Precipitation decreases significantly to 46 mm (1.8 in), falling on only 8 days and accompanied by lower humidity at 79%. For specific insights into how the weather unfolds in March, you can visit Costinesti weather in March.

December and April present quite different weather patterns. In December, temperatures range from a chilly minimum of -5°C (24°F) to a maximum of 16°C (62°F), with an average of 7°C (45°F). The month experiences higher humidity at 84% and a considerable amount of precipitation, totaling 72 mm (2.8 in) over 13 days. In contrast, April brings milder conditions, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 20°C (68°F) and an average of 10°C (50°F). Precipitation is significantly lower at 30 mm (1.2 in), spread over just 5 days, and humidity decreases to 75%. For a closer look at the conditions in April, you can check Costinesti weather in April.

December and May present stark contrasts in weather patterns. December typically showcases a chillier climate, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 16°C (62°F) and an average of 7°C (45°F). This month also experiences higher precipitation, averaging 72 mm (2.8 in) over 13 days, coupled with a humidity level of 84%. In contrast, May ushers in warmer conditions, with minimum temperatures around 9°C (49°F), an average of 16°C (61°F), and maximums reaching 25°C (76°F). The month is relatively dry, with only 31 mm (1.2 in) of rain falling across 7 days and humidity at a lower 77%. For more information, check out Costinesti weather in May.

December and June offer distinctly different weather experiences. In December, temperatures can dip as low as -5°C (24°F) and typically hover around an average of 7°C (45°F), while reaching a maximum of 16°C (62°F). The month sees significant precipitation, with about 72 mm (2.8 in) falling over 13 days, contributing to a high humidity level of 84%. In contrast, June brings a much warmer climate, with minimum temperatures starting at 13°C (55°F) and averaging 21°C (71°F), peaking at a comfortable 29°C (84°F). The precipitation rate is slightly lower at 71 mm (2.8 in) over just 11 days, and humidity drops to 71%. For a closer look at the pleasant conditions typical of June, check out Costinesti weather in June.

When comparing the weather in December and July, it’s evident that these months offer contrasting experiences. December features cooler temperatures, with a minimum of -5°C (24°F) and an average of 7°C (45°F), while July enjoys much warmer conditions, boasting a minimum of 17°C (63°F) and an average of 24°C (75°F). Precipitation levels also differ, with December receiving 72 mm (2.8 in) over 13 days compared to July's 56 mm (2.2 in) across just 7 days. Additionally, December's humidity is notably higher at 84%, compared to July's 69%, making December feel quite damp in contrast to the more comfortable summer month. For a closer look at the summer conditions, you can check Costinesti weather in July.

December and August present stark contrasts in weather patterns. In December, temperatures range from a chilly -5°C (24°F) at night to a mild 16°C (62°F) during the day, with an average of 7°C (45°F). This month is characterized by higher humidity at 84% and frequent precipitation, averaging 72 mm (2.8 in) over approximately 13 days. In contrast, August boasts a much warmer climate, with minimum temperatures around 18°C (64°F) and daytime highs reaching up to 30°C (86°F). The average temperature of 25°C (77°F) creates a leisurely atmosphere, complemented by significantly less precipitation of only 9 mm (0.4 in) over just 2 days and a lower humidity level of 60%. For more specifics on August conditions, visit Costinesti weather in August.

In December, the weather is significantly colder, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 16°C (62°F), and an average of 7°C (45°F). This month experiences higher precipitation levels, with 72 mm (2.8 in) spread over 13 days and high humidity at 84%. In contrast, September boasts milder and more pleasant conditions, featuring minimum temperatures of 12°C (53°F) and maximums reaching 28°C (82°F), resulting in an average of 21°C (70°F). Precipitation is considerably less, with just 22 mm (0.9 in) occurring over 4 days and a lower humidity of 63%. For more insights on the weather during September, you can visit Costinesti weather in September.

In examining the weather contrasts between December and October, we notice distinct variations. December tends to be significantly colder, with minimum temperatures plunging to -5°C (24°F) compared to October's milder minimum of 7°C (45°F). The average temperature in December hovers around 7°C (45°F), while October enjoys a warmer average of 16°C (61°F).

Precipitation is also more frequent in December, with 72 mm (2.8 in) spread over 13 days, whereas October sees less rain, totaling 57 mm (2.3 in) across just 7 days. Additionally, December's humidity is higher at 84%, compared to October's 76%. For a closer look at the specifics of the October weather, you can visit Costinesti weather in October.

In comparing the weather between December and November, December tends to be colder overall, with average temperatures ranging from a minimum of -5°C (24°F) to a maximum of 16°C (62°F), compared to November's milder range of 1°C (33°F) to 20°C (69°F). Additionally, precipitation is slightly higher in December at 72 mm (2.8 in) over 13 days, whereas November sees 60 mm (2.4 in) over 10 days. Humidity levels are also higher in December at 84% compared to November's 81%, contributing to a more damp and chilly environment. For more details about the weather in November, you can visit Costinesti weather in November.

Compare Costinesti's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Costinesti

As December arrives in Costinesti, it ushers in a significant shift in weather compared to other months. The temperatures dip notably, with an average chill that can make the seaside feel brisk and invigorating. This month is marked by increased precipitation, with frequent rainy days that contribute to the overall humidity levels, making the air feel damp and cool. The combination of these elements creates a unique atmosphere, perfect for those who enjoy a quieter coastal experience away from the typical tourist crowds. For those interested in further exploring the nuances of weather throughout the year, check out Costinesti Climate.