December Weather in Ustron, Poland

Last updated: August 27, 2025

In Ustron, Poland, December brings a notable chill, with average temperatures hovering around 1°C (34°F) and dipping as low as -13°C (9°F) at night. Daytime highs can reach a mild 15°C (58°F), but the cold is often accompanied by a high humidity level of 91%, making the air feel even crisper. With 86 mm (3.4 in) of precipitation over 15 days, December is a wet month, leading to frequent bouts of snow and rain that blanket the picturesque landscapes. Visitors and residents alike can expect a winter wonderland, complete with stunning views and the charm of seasonal festivities.

December Temperature in Ustron

In Ustroń, Poland, December marks a distinctive shift as winter settles in, with temperatures dropping significantly. The month presents an average temperature around 1°C (34°F), revealing a chill that deepens as it progresses. The thermometer can plunge to a minimum of -13°C (9°F), while daytime highs can reach a mild 15°C (58°F). This fluctuation creates a crisp, invigorating atmosphere perfect for winter activities. As December unfolds, the transition from the more temperate conditions of November to the frigid embrace of winter becomes apparent, inviting visitors to experience the unique charm of a winter wonderland.

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

The chart illustrates December temperature patterns in Ustron, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ustron, 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).
JanFebMarAprMayJunJulAugSepOctNovDec303439475565666658504234
Data source: Temperature data for Ustron generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Ustron

In Ustron, Poland, December brings a notable shift in precipitation, with an average of 86 mm (3.4 in) falling over about 15 days. This marks a slight increase from November's drier climate, where only 55 mm (2.1 in) was recorded across 10 days. As the year draws to a close, December's levels reflect a trend of rising precipitation that starts in the late fall, peaking in the lush month of May at 122 mm (4.8 in). The wetter winter months are indicative of the region's shift from autumn, with precipitation consistently hovering around a higher average through the latter part of the year, culminating in a season that often embraces snow alongside rain. This pattern highlights the variability Ustron experiences, as it transitions from the crisp autumn air into the chill of winter, bringing both beauty and complexity to its climate.

December Precipitation Trends in Ustron

The chart displays monthly precipitation patterns in Ustron, 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 Ustron, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec5672617012295107124117975586
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Ustron

In Ustron, Poland, December marks a notable peak in humidity levels, reaching 91%, just above the year’s average of 83%. This increase reflects a consistent trend as the winter months approach; the humidity typically starts high in January at 90% and remains elevated through November. Interestingly, following the summer's drier days in July and August, where humidity falls to its lowest at 67%, the progression towards winter brings a return to much more moisture-filled air. The shift from October’s 83%, an already humid month, culminates in December’s high, suggesting that residents can expect a damp and chilly end to the year.

December Average Humidity in Ustron

This chart illustrates the average monthly humidity levels in Ustron, 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 Ustron is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%87%83%76%70%71%67%64%67%83%90%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Ustron

As December settles in Ustron, Poland, the UV Index drops to a mild 1, categorized as low, making it a gentle time for outdoor activities. This marks a notable decrease from the higher levels experienced earlier in the year, where the UV Index soared to 8 during the summer months, calling for vigilant sun protection. With a burn time of approximately 45 minutes, December invites residents and visitors to enjoy the crisp winter air without the worry of sunburn. This trend of decreasing UV levels not only indicates safer outdoor exposure but also highlights the seasonal shifts in sunlight intensity, making it an ideal time for cozying up indoors or enjoying leisurely strolls outside. For more detailed insights on UV exposure throughout the year, check out Ustron UV Index.

Maximum UV Index Levels in Ustron for December

The chart shows the monthly maximum UV Index (UVI) for Ustron 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 Ustron typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224678876421
Data source: Ustron 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 Ustron

In Ustron, Poland, December brings a notable shift in sunlight hours, with an average of 147 hours gracing the month. As the year closes, this figure stands as a gentle reminder of the diminishing daylight compared to the vibrant sunshine of summer, where hours peaked at 423 in July. The crisp winter air contrasts sharply with the sun-soaked days of May and June, which bask in 371 and 410 hours, respectively. While December may not offer the abundance of light found in the warmer months, it still holds a charm, encouraging cozy gatherings and tranquil winter walks under the soft, muted glow of the sun. As we reflect on the year, it's clear that Ustron's sunshine trends beautifully encapsulate the cyclical dance of seasons, with each month contributing its own unique brilliance.

Monthly Sunshine Duration in Ustron: December Highlighted

The December sunshine duration represents the total number of hours Ustron 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.
JanFebMarAprMayJunJulAugSepOctNovDec136h193h291h325h371h410h423h387h308h260h200h147h
Data source: Ustron December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ustron During December

In Ustron, Poland, the likelihood of experiencing sunny weather in December diminishes significantly, with only a 16% chance of sunlit days. This trend highlights a stark contrast compared to the sunnier months of mid-year, such as June, which boasts nearly 49% sunshine. As we move from the spring months into winter, the potential for clear skies decreases considerably, peaking in March at 40% and sharply declining through the latter months of the year. By December, the sun seems to take a holiday itself, making it one of the least likely months for bright and sunny weather.

Percentage of Sunny Days in December in Ustron

The chart illustrates the percentage of sunny days in Ustron 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 Ustron experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%30%40%34%32%49%38%34%40%47%27%16%
Data source: Ustron December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ustron in December

In December, Ustron, Poland, experiences a return to shorter days, with only eight hours of daylight. This month marks a notable dip in sunlight as the region transitions from the longer days of summer, where June boasts a generous 16 hours of daylight. Following this peak, daylight hours gradually decrease into autumn, reaching nine hours in November before settling at December’s low. The trend reveals a cyclical pattern of daylight duration, starting from 10 hours in February, gradually increasing through spring and peaking in June, then tapering down through autumn before winter sets in. As December approaches, residents find themselves in the cozy embrace of winter, where the shorter days invite evenings filled with warmth and indoor comfort.

Average Daylight Hours in Ustron for December

The chart illustrates the variation in daylight duration in Ustron throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 39m10h 6m11h 55m13h 46m15h 23m16h 13m15h 46m14h 20m12h 33m10h 42m9h 3m8h 11m
Data source: Ustron daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Ustron

As December unfolds in Ustron, Poland, the winds remain steady, with an average speed of 3.2 m/s (7 mph), mirroring the calm breezes of earlier months like January and November. This consistency hints at a seasonal stability where winter's chill is felt more in the air than in the gusts that typically sweep through the landscape. Following a mild summer—marked by notably weaker winds in June and July—the autumn months see a resurgence in wind speed, peaking again in October before tapering off slightly in December. Overall, December's winds continue to echo the serene, chill atmosphere of winter in Ustron, providing a gentle backdrop to the snowy landscape.

Average December Wind Speed in Ustron

The chart displays monthly wind speed patterns in Ustron, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.23.33.13.33.62.22.32.62.63.63.23.2 m/s
Data source: Ustron December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Ustron Compares to Other Months

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

December sees a broader temperature range compared to January, with minimums of -13°C (9°F) and maximums reaching up to 15°C (58°F), resulting in an average of 1°C (34°F). The month also experiences higher precipitation at 86 mm (3.4 in) over 15 days, coinciding with a humidity level of 91%. In contrast, January’s temperatures drop further, with a minimum of -20°C (-3°F) and an average of -1°C (30°F), while maximum temperatures peak at 10°C (51°F). Precipitation decreases to 56 mm (2.2 in) spread over 12 days, accompanied by slightly lower humidity at 90%. For more detailed information on January weather, you can visit Ustron weather in January.

December and February present similar average temperatures, typically hovering around 1°C (34°F). However, February can experience slightly lower minimum temperatures, plummeting to -18°C (0°F) compared to December's -13°C (9°F). Interestingly, February has a higher maximum temperature that can reach 18°C (64°F), while December peaks at 15°C (58°F). Precipitation is also notable; December receives more rainfall at 86 mm (3.4 in) over 15 days, while February sees 72 mm (2.8 in) across 13 days. The humidity levels are fairly comparable, with December at 91% and February slightly lower at 87%. For a detailed look at February’s weather, visit Ustron weather in February.

December and March present distinct weather patterns, reflecting the transition from winter to early spring. In December, temperatures range from a chilly minimum of -13°C (9°F) to a mild maximum of 15°C (58°F), with an average of around 1°C (34°F). The month experiences substantial precipitation, totaling 86 mm (3.4 in) over about 15 days, and the high humidity at 91% contributes to a damp cold. Conversely, March starts off with even colder minimum temperatures plunging to -22°C (-8°F), yet the maximum can reach 20°C (68°F) with an average of 4°C (39°F). While precipitation in March is lower at 61 mm (2.4 in) over 14 days, the humidity drops to 83%, signifying a shift towards drier conditions as spring approaches. For a deeper look into what to expect, check out Ustron weather in March.

December weather is characterized by colder temperatures, with a minimum of -13°C (9°F) and a chilly average of just 1°C (34°F), whereas, in April, temperatures begin to rise, with a minimum of -6°C (22°F) and an average of 8°C (47°F). While December experiences more humidity at 91%, April offers a more comfortable level of 76%. Precipitation is slightly higher in December, with 86 mm (3.4 in) over 15 days, compared to April's 70 mm (2.8 in) over 11 days. This change in weather not only signifies the transition from winter to spring but also brings about a shift in outdoor activities and scenery. For more information on weather specifics in April, you can visit Ustron weather in April.

December and May exhibit stark contrasts in weather conditions. In December, temperatures drop significantly, with a minimum of -13°C (9°F) and an average of just 1°C (34°F), while May enjoys notably milder weather, showcasing a minimum temperature of -2°C (29°F) and an average of 13°C (55°F). Precipitation also varies, with December featuring 86 mm (3.4 in) over 15 days and May experiencing slightly higher rainfall at 122 mm (4.8 in) across 18 days. Humidity levels are notably higher in December at 91%, compared to 70% in May. For a comprehensive look at the weather during May, you can check out Ustron weather in May.

December and June present striking contrasts in weather conditions. In December, temperatures can plummet to a minimum of -13°C (9°F), with an average temperature of around 1°C (34°F) and a maximum reaching 15°C (58°F). The month is characterized by high humidity at 91% and significant precipitation, totaling 86 mm (3.4 in) over 15 days. In contrast, June welcomes warmer temperatures with a minimum of 5°C (42°F), an average of 18°C (65°F), and highs that can soar to 32°C (89°F). While June experiences slightly more precipitation at 95 mm (3.8 in), it has fewer rainy days at 14 and lower humidity levels at 71%. For more details on Ustron’s June climate, check out Ustron weather in June.

December and July exhibit stark contrasts in weather. In December, temperatures range from a chilly -13°C (9°F) at night to a milder 15°C (58°F) during the day, with an average of about 1°C (34°F). The month experiences high humidity at 91% and sees precipitation on 15 days, totaling 86 mm (3.4 in). In contrast, July brings a much warmer climate, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 33°C (92°F), and an average of 19°C (66°F). Although July is slightly wetter, with 107 mm (4.2 in) of precipitation over 16 days, the humidity drops to 67%. For more details on July weather, you can refer to Ustron weather in July.

December and August present strikingly different weather patterns. In December, temperatures can drop as low as -13°C (9°F), with an average of just 1°C (34°F) and a high of 15°C (58°F). This month is marked by high humidity at 91% and considerable precipitation, totaling 86 mm (3.4 in) over approximately 15 days. In contrast, August offers a much warmer climate with a minimum temperature of 7°C (45°F), an average of 19°C (67°F), and highs reaching up to 33°C (92°F). While it experiences slightly more precipitation at 124 mm (4.9 in) over 14 days, the humidity is significantly lower at 64%. For a detailed look at the weather in August, check Ustron weather in August.

December and September present contrasting weather patterns that highlight the transition from autumn to winter. In December, temperatures range from a chilly -13°C (9°F) at night to a mild 15°C (58°F) during the day, with an average temperature of 1°C (34°F). In contrast, September enjoys a more moderate climate with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 29°C (85°F), averaging 14°C (58°F). Precipitation is also notable in both months; December sees 86 mm (3.4 in) of rain over 15 days, while September has slightly higher precipitation at 117 mm (4.6 in) over 14 days. Additionally, humidity levels are higher in December at 91%, compared to September's 67%, making the former month feel much colder. For more specific details on the weather during September, you can visit Ustron weather in September.

In comparing the weather between December and October, notable differences emerge in both temperature and humidity. December experiences a broader temperature range, with minimums plummeting to -13°C (9°F) and an average of 1°C (34°F), while October boasts milder temperatures, with lows of -3°C (27°F) and an average of 10°C (51°F). Additionally, October showcases more pleasant highs, reaching up to 25°C (77°F) compared to December's maximum of 15°C (58°F). Precipitation varies slightly, with December receiving 86 mm (3.4 in) over 15 days versus October's 97 mm (3.8 in) over 12 days. Humidity levels are higher in December at 91%, compared to October's relatively lower 83%. For a closer look at October conditions, check out Ustron weather in October.

In December, the weather is noticeably colder compared to November, with average temperatures dropping from 6°C (42°F) in November to around 1°C (34°F). Minimum temperatures in December reach a frigid -13°C (9°F), while November's lowest temperature is slightly milder at -8°C (18°F). Precipitation also increases, with December receiving 86 mm (3.4 in) over 15 days, compared to November's 55 mm (2.1 in) over 10 days. Humidity remains high in both months, though December sees a slight uptick to 91% from November's 90%. Overall, December ushers in a more wintery ambiance than its preceding month. For more detailed information, check out Ustron weather in November.

Compare Ustron's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Ustron

As December unfolds in Ustron, the weather takes a notable turn, setting itself apart from other months. With temperatures dipping to a chilling average of 1°C and drops as low as -13°C, the month brings a crisp, wintry atmosphere marked by increased humidity levels of 91%. The frequent precipitation, totaling around 86 mm over 15 days, blankets the area in a characteristic dampness, often leaving the landscape cloaked in frost. This blend of cold and moisture not only transforms Ustron into a picturesque winter wonderland but also invites visitors to experience seasonal festivities and outdoor activities that aren't as pronounced during the milder months. For a deeper dive into Ustron's climate throughout the year, explore Ustron Climate.