Last updated: August 27, 2025
December in Iași, Romania presents a fascinating blend of winter's embrace and fluctuating temperatures. The maximum temperature reaches a mild 16°C (61°F), while the average temperature settles at a brisk 2°C (35°F), dipping down to a chilling minimum of -13°C (8°F). This month witnesses about 53 mm (2.1 in) of precipitation over approximately 11 days, contributing to the region's characteristic 90% humidity. As the year draws to a close, Iași transforms into a winter wonderland, offering a unique atmosphere that captures the essence of the season.
In December, Iași, Romania experiences a significant dip in temperatures as winter sets in, with minimums around -13°C (8°F). The average temperature hovers at a brisk 2°C (35°F), offering a sharp contrast to the milder climates of earlier months. Daytime highs reach a comfortable 16°C (61°F), making it one of the more pleasant winter days compared to the harsher chill of January and February. As the year draws to a close, the transition into winter is evident, with the city cloaked in a serene frost, hinting at the snowy days that lie ahead. This month encapsulates a charming essence of winter, perfect for cozying up in cafes or exploring the historic streets adorned with holiday cheer.
In December, Iasi, Romania experiences a notable increase in precipitation, with 53 mm (2.1 in) of rain falling over 11 days. This marks a shift compared to the drier month of November, which had less rainfall and fewer wet days. December's precipitation amounts contribute to the region's overall yearly cycle, peaking at 11 days of rain, similar to May, highlighting the onset of winter. The consistent moisture during this month prepares the landscape for the colder temperatures ahead, fostering a vibrant and rich environment even in the depths of winter.
In Iasi, Romania, December brings with it a notable rise in humidity levels, reaching 90%, a slight increase from the preceding month's 89%. As the year progresses, humidity generally trends downwards during the warmer months, peaking in January at an impressive 92% before gradually declining to its lowest point of 56% in August. However, as autumn sets in, humidity begins to ascend once again, culminating in December's damp chill. This cyclical pattern highlights the region's characteristic seasonal transitions, where the colder months evoke a resurgence of moisture in the air, offering a stark contrast to the dry embrace of summer.
In Iasi, Romania, the UV Index showcases a clear seasonal trend, peaking in the summer months and dipping significantly during the colder seasons. In December, the UV Index rests at a mild 2, categorized as low, allowing for a comfortable burn time of 45 minutes without significant risk of skin damage. This marks a transition from the very high levels seen in the summer, where the Index soared to 9 in June and July, necessitating much shorter exposure times of just 15 minutes. As we move through the year, the gradual decline in UV radiation levels highlights a safer environment for outdoor activities in the winter months. For further details and planning your sun exposure, you can check the comprehensive Iasi UV Index.
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In Iasi, Romania, December ushers in a modest 157 hours of sunshine, signaling the cusp of winter as daylight wanes significantly from the vibrant glow of midsummer, where July boasts an impressive 431 hours. The sun's presence gradually recedes from the year’s peak in June, consistently illuminating the city with increasing hours each month until it reaches a zenith in May. As autumn sets in, the sun's embrace diminishes, leading into November's brisk 198 hours, before December settles in with a gentle retreat into colder, darker days. Overall, this trend emphasizes the rhythm of the seasons, highlighting the contrast between the lengthy, sun-soaked days of summer and the shorter, subdued daylight of winter, creating a captivating seasonal tapestry that characterizes life in Iasi.
The likelihood of sunny weather in December in Iasi, Romania, is notably low, with only a 15% chance of sunshine. This figure is a sharp contrast to the more promising prospects seen in the mid-year months, such as July and August, which boast chances of 53% and 56%, respectively. As the year progresses from the warmth of summer into the chill of winter, the sun's presence dwindles significantly, peaking in April at 47% before entering a steady decline to December. This trend underscores the shift towards a more overcast and wintry environment, suggesting that those planning December activities might want to brace for a cloudier, gloomier ambiance in Iasi.
As the year draws to a close, Iasi, Romania experiences a familiar decline in daylight during December, with only 8 hours of sunlight illuminating the city. This shift is part of a broader trend where daylight duration peaks in the summer months, reaching a vibrant 15 hours in both June and July. The gradual decrease begins in August, highlighting nature's rhythm as daylight wanes through the autumn. By November, residents enjoy just 9 hours, setting the stage for the winter solstice. As December arrives, a sense of coziness envelops Iasi, with shorter days offering a perfect backdrop for winter festivities and evenings spent indoors, embracing the seasonal transition.
As the year winds down, December in Iasi, Romania, greets residents with a brisk average wind speed of 3.2 m/s (7 mph), slightly rising from the preceding months. This uptick mirrors a general trend in wind speed throughout the colder months; both November and December showcase higher averages compared to the milder spring and summer months. Notably, December’s wind speeds reflect a refreshing vigor, asserting the season's chill and invigorating the spirit as festive celebrations approach. The evolving wind patterns hint at the transition into winter, making it a unique time for the city, where the gentle rustle of leaves gives way to the frosty breath of the season.
Weather in Iasi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Iasi, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January showcase distinct differences in weather. December experiences a slightly milder average temperature of around 2°C (35°F) with maximums reaching 16°C (61°F), while January is colder, featuring an average temperature of -1°C (30°F) and minimum temperatures plunging to -18°C (0°F). Precipitation levels decrease significantly from December's 53 mm (2.1 in) over 11 days to just 23 mm (0.9 in) across 6 days in January. Additionally, humidity remains high in both months, rising from 90% in December to 92% in January, contributing to the chill in the air. For more specific insights into January's conditions, you can check Iasi weather in January.
December and February present distinct weather patterns, with December showcasing a broader temperature range, from a chilly minimum of -13°C (8°F) to a more comfortable maximum of 16°C (61°F), and an average temperature of 2°C (35°F). It experiences higher humidity at 90% and more precipitation, totaling 53 mm (2.1 in) over 11 days. In contrast, February typically features colder temperatures, hitting lows of -20°C (-4°F) and peaking at 18°C (65°F), with an average of 1°C (34°F). This month sees less precipitation, at 36 mm (1.4 in) over just 7 days, accompanied by slightly lower humidity at 88%. For more detailed insights, check out Iasi weather in February.
December and March present distinct weather patterns, highlighting the transition from winter to early spring. In December, temperatures range from a frigid -13°C (8°F) at their lowest to a mild 16°C (61°F) at their peak, with an average temperature of around 2°C (35°F). The month experiences relatively high humidity at 90% and precipitation of 53 mm over about 11 days.
In contrast, March showcases a more notable warming trend, with temperatures dipping to -15°C (5°F) at their lowest but reaching up to 23°C (74°F), yielding a higher average of 5°C (41°F). Precipitation is lower, at 38 mm across about 9 days, with slightly reduced humidity at 86%. For a closer look at March weather, you can refer to Iasi weather in March.
December and April present notably different weather patterns. In December, temperatures can dip as low as -13°C (8°F), with an average temperature around 2°C (35°F) and a maximum reaching 16°C (61°F). The month experiences a higher level of humidity at 90%, along with approximately 53 mm (2.1 in) of precipitation over 11 days. In contrast, April sees milder conditions with minimum temperatures around -6°C (22°F) and an average of 11°C (52°F), peaking at 28°C (82°F). The month is generally drier, with just 34 mm (1.4 in) of precipitation spread over 7 days, and humidity levels decrease to 79%. To learn more about the weather specifics in April, you can visit Iasi weather in April.
In December, temperatures in Iasi range from a chilly -13°C (8°F) to a mild 16°C (61°F), with an average of 2°C (35°F). The month experiences a high level of humidity at 90% and sees 53 mm (2.1 in) of precipitation over 11 days. In contrast, May offers a much warmer climate, with temperatures ranging from a low of 3°C (38°F) to a high of 30°C (87°F), averaging 16°C (62°F). Although May has slightly more precipitation at 68 mm (2.7 in) over the same number of days, the humidity drops to 73%. Overall, while December presents a cold and damp atmosphere, May brings vibrant warmth and a pleasant breeze. For more detailed insights, check out Iasi weather in May.
In December, the weather is typically cold, with temperatures ranging from a low of -13°C (8°F) to a mild maximum of 16°C (61°F) and an average temperature of around 2°C (35°F). Humidity levels are high at 90%, contributing to a damp feel, with precipitation occurring on about 11 days, totaling 53 mm (2.1 in). In contrast, June offers a much warmer climate, where temperatures can vary between 8°C (47°F) and a high of 33°C (91°F), with an average around 21°C (71°F). Although precipitation is slightly higher at 97 mm (3.8 in) over 14 days, the lower humidity of 73% makes for a more comfortable atmosphere. To learn more about the weather in this vibrant month, see Iasi weather in June.
When comparing the weather in December and July, it is clear that these two months present starkly different climates. December features a chilly range, with minimum temperatures plummeting to -13°C (8°F) and an average around 2°C (35°F), while July enjoys much warmer conditions, with temperatures ranging from a minimum of 11°C (52°F) to a scorching maximum of 35°C (96°F). Precipitation is relatively similar, with December experiencing 53 mm (2.1 in) over 11 days and July slightly higher at 62 mm (2.4 in) across 9 days. Additionally, the humidity is significantly higher in December at 90% compared to July's 68%, contributing to the overall cold and damp feel of the winter month. For more detailed information on July weather, you can check Iasi weather in July.
In December, the weather in Iasi is notably colder and wetter compared to August. With minimum temperatures dropping to -13°C (8°F) and average temperatures around 2°C (35°F), the winter months bring a chill that is complemented by high humidity levels of 90%. Precipitation occurs on about 11 days, totaling 53 mm (2.1 in), making it a damp time of the year.
In contrast, August boasts much warmer temperatures, with minimums of 8°C (46°F) and averages reaching 23°C (74°F), peaking at a sizzling 37°C (99°F). The summer heat is accompanied by lower humidity at 56% and less precipitation, accumulating only 41 mm (1.6 in) over about 6 days. This stark difference highlights the seasonal extremes in Iasi's climate. For more detailed information on Iasi's weather in August, you can check Iasi weather in August.
In December, the weather is significantly colder compared to September, with temperatures ranging from a chilling minimum of -13°C (8°F) to a maximum of 16°C (61°F), averaging around 2°C (35°F). The month experiences higher humidity levels at 90%, contributing to the potentially harsher winter conditions. In contrast, September offers a much milder climate, with temperatures ranging from a minimum of 3°C (37°F) to a warm maximum of 34°C (94°F), resulting in an average temperature of 18°C (65°F). Additionally, September sees less precipitation at 28 mm (1.1 in) over just 6 days, compared to December's 53 mm (2.1 in) over 11 days. For more details on September's weather, you can visit Iasi weather in September.
In comparing December and October weather, December is significantly colder, with temperatures ranging from a minimum of -13°C (8°F) to a maximum of 16°C (61°F), averaging around 2°C (35°F). With an average humidity of 90%, the month is quite damp and experiences 53 mm (2.1 in) of precipitation over 11 days. In contrast, October boasts a much milder climate, with temperatures ranging from 0°C (32°F) to 27°C (81°F) and an average of 12°C (54°F). This month sees less precipitation—only 33 mm (1.3 in) over 4 days—and a lower humidity of 80%. For more detailed information on October weather, check out Iasi weather in October.
In comparing the weather of December and November, December experiences colder temperatures with a minimum of -13°C (8°F) and an average of 2°C (35°F), while November is milder, having a minimum of -6°C (21°F) and an average of 6°C (43°F). Additionally, December sees more precipitation, totaling 53 mm (2.1 in) over 11 days, compared to November's 31 mm (1.2 in) spread across just 6 days. Both months have high humidity, but December slightly edges out with 90% compared to November's 89%. For a more detailed look at November's weather, you can check Iasi weather in November.
As December unfolds in Iași, the weather transitions into a much cooler climate, setting it apart from the milder months of the year. With temperatures dipping to chilly lows and an increased likelihood of precipitation, the atmosphere becomes brisk and invigorating, perfect for embracing the festive season. The high humidity adds a crispness to the air, making those rare sunny days feel all the more precious. Snowfall can grace the city, transforming it into a winter wonderland, while cozy indoor activities become the norm. This month invites both locals and visitors to appreciate a different side of Iași's charm, making it an ideal time to explore the city's winter delights. For more details, check out Iasi Climate.