December Weather in Izmit, Turkey

Last updated: August 27, 2025

December in Izmit, Turkey offers a unique blend of chilly weather and frequent rain, making it a month of contrasts. With maximum temperatures reaching 19°C (67°F) and dipping to a minimum of -5°C (23°F), the average temperature settles around 7°C (45°F). This month experiences significant moisture, as 131 mm (5.2 in) of precipitation falls over 16 days, leading to a notably high humidity level of 85%. Visitors can expect cool, damp days, perfect for cozy indoor activities or exploring the rich cultural heritage of the region while dressed warmly.

December Temperature in Izmit

In Izmit, Turkey, December ushers in a chill as temperatures begin to dip, with lows around -5°C (23°F), contrasting sharply with the milder autumn months. The average temperature settles at 7°C (45°F), a significant drop from the more temperate November. Maximums reach up to 19°C (67°F), hinting at a lingering warmth during the day, but the evenings remind residents and visitors alike of winter's impending embrace. As the last month of the year arrives, it signals a transition; December's cooler climate encourages cozy gatherings, warming drinks, and the anticipation of the new year's chill. Overall, this month serves as a poignant reminder of the changing seasons, balancing chilly nights with relatively moderate daytime warmth.

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

The chart illustrates December temperature patterns in Izmit, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Izmit, 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).
JanFebMarAprMayJunJulAugSepOctNovDec394245526168727367595144
Data source: Temperature data for Izmit 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 Izmit

December in Izmit, Turkey, marks the climax of the wet season, with an impressive 131 mm (5.2 in) of precipitation spread over 16 days. This significant uptick contrasts sharply with the drier summer months, particularly August, which recorded a mere 29 mm (1.2 in) across only 5 days. As winter sets in, the frequency of rainy days increases, reflecting a notable trend of heightened moisture in the atmosphere during the final month of the year. This seasonal shift not only replenishes local water sources but also enhances the vibrancy of the region’s landscapes, preparing Izmit for the colder months ahead.

December Precipitation Trends in Izmit

The chart displays monthly precipitation patterns in Izmit, 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 Izmit, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec1088610275901037130517966131
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Izmit

As December approaches in Izmit, Turkey, the city experiences a notable increase in humidity, rising to a substantial 85%. This marks a continuation of trend observed since November, where humidity levels were already high at 82%. Throughout the year, humidity fluctuates significantly, with the summer months of June to August presenting the driest conditions, dipping to a low of 55% in August. However, as the year progresses towards winter, humidity levels stabilize and ascend, culminating in the wet and chilly month of December. This seasonal shift underscores the region's distinct climatic patterns, blending cool air with elevated moisture as it ushers in the winter season.

December Average Humidity in Izmit

This chart illustrates the average monthly humidity levels in Izmit, 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 Izmit is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%83%76%77%70%63%55%60%73%82%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Izmit

In December, the UV Index in Izmit, Turkey drops to a low level of 2, reflecting a significant decrease from the peak summer months. This shift results in a safe burn time of 45 minutes, allowing for more leisurely outdoor activities without the usual sun exposure concerns. Overall, December marks a contrast to the previous months, where the UV Index surged to 10 during the height of summer, indicating a transition to a more forgiving environment for sun seekers. As the year comes to a close, this reduction in UV intensity offers a welcome reprieve after the very high levels faced from April to August. For detailed insights on UV exposure throughout the year, visit Izmit UV Index.

Maximum UV Index Levels in Izmit for December

The chart shows the monthly maximum UV Index (UVI) for Izmit 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 Izmit typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101097642
Data source: Izmit 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 Izmit

December in Izmit, Turkey, welcomes the transition into winter with a delightful 207 hours of sunshine, a slight dip from the previous months but still offering a warm respite during the chilly season. As the year unfolds, daylight peaks in the summer, with July basking in 416 hours of glorious sunlight, while the warmer months generally provide a remarkable abundance of brightness. Conversely, the sun begins its retreat as autumn progresses, leading to the lower totals seen in November and December. This pattern showcases a stark contrast between the vibrant, sun-drenched summer days and the more subdued, yet still charming, winter sunlight, making Izmit a captivating destination year-round.

Monthly Sunshine Duration in Izmit: December Highlighted

The December sunshine duration represents the total number of hours Izmit 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.
JanFebMarAprMayJunJulAugSepOctNovDec161h218h287h320h377h393h416h394h341h290h246h207h
Data source: Izmit December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Izmit During December

In Izmit, Turkey, the likelihood of sunny weather in December stands at 30%, which reflects a slight dip compared to the preceding months as the year winds down. This percentage signifies a consistent trend of reduced sunshine opportunities towards the end of the calendar year, following a peak likelihood of sun in the summer months, particularly July and August, where chances climb to 63% and 68%, respectively. As we transition from the vibrant warmth of late spring into the chill of winter, December's sunshine potential mirrors the patterns observed in November (37%) and October (35%), suggesting that while sun-filled days may be fewer, the charming allure of winter in Izmit remains undeniably captivating, beckoning both locals and visitors alike.

Percentage of Sunny Days in December in Izmit

The chart illustrates the percentage of sunny days in Izmit 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 Izmit experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec26%39%30%32%51%50%63%68%48%35%37%30%
Data source: Izmit December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Izmit in December

In Izmit, Turkey, December marks a return to shorter days, with daylight lasting about 9 hours—the same duration experienced in November. This reduction follows a gradual increase in daylight from just 9 hours in January to a peak of 15 hours in June, creating a vibrant arc of increasing light during the spring and summer months. As the year progresses into December, the daylight begins to dwindle once more, indicating a cyclical pattern that encapsulates the region's seasonal transition. With each month offering a unique balance of light, residents can enjoy the festive atmosphere of winter, even as the shorter days remind them of the coming spring.

Average Daylight Hours in Izmit for December

The chart illustrates the variation in daylight duration in Izmit throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 36m10h 38m11h 57m13h 18m14h 27m15h 1m14h 43m13h 42m12h 25m11h 4m9h 54m9h 17m
Data source: Izmit daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Izmit

As December arrives in Izmit, Turkey, the average wind speed picks up slightly to 2.3 m/s (5 mph), aligning with the overall trend seen throughout the year. While the wind is gentle overall, it remains consistent, hovering around similar speeds from January to November. Interestingly, the summer months, particularly July and August, show a minor uptick, peaking at 2.4 m/s (5 mph), before gradually settling back down into the quieter winter pace. This rhythm reflects the region’s climatic stability, where even in December, the winds whisper softly, providing a serene backdrop to the city's winter landscape.

Average December Wind Speed in Izmit

The chart displays monthly wind speed patterns in Izmit, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.32.22.12.21.92.32.42.52.22.12.3 m/s
Data source: Izmit December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Izmit Compares to Other Months

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

In comparing the weather between December and January, January tends to be colder, with a minimum temperature that can plummet to -14°C (7°F) compared to December's milder -5°C (23°F). While both months feature average daily temperatures around the chilly end of the scale, January typically hovers lower at an average of 4°C (39°F), outpacing December's 7°C (45°F). Precipitation levels are slightly reduced in January at 108 mm (4.3 in) over 13 days, compared to December's 131 mm (5.2 in) over 16 days. Humidity remains relatively constant, with January at 84% and December at 85%. For more detailed insights, you can explore Izmit weather in January.

In December, the weather tends to be milder during the day with average temperatures reaching around 7°C (45°F) but can drop to a minimum of -5°C (23°F) at night. The month receives considerable rainfall, totaling 131 mm (5.2 in) over approximately 16 days, and features high humidity levels at 85%.

In contrast, February experiences slightly colder conditions, with average temperatures around 6°C (42°F) and nighttime lows dipping to -11°C (12°F). Precipitation decreases to 85 mm (3.4 in) over 14 days, maintaining a similar humidity level at 84%.

For those interested in more details about February weather in Izmit, you can visit this link: Izmit weather in February.

In December, the weather is characterized by slightly milder temperatures with a minimum of -5°C (23°F) and an average of 7°C (45°F), peaking at a maximum of 19°C (67°F). This month also sees considerable precipitation, totaling 131 mm (5.2 in) over about 16 days, contributing to a high humidity level of 85%. In contrast, March experiences a slightly chillier minimum temperature of -7°C (19°F), while the average remains the same at 7°C (45°F), and the maximum increases to 23°C (74°F). Precipitation in March is less, with 102 mm (4.0 in) spread over 14 days and a slightly lower humidity of 83%. For more specific details about March weather, you can check Izmit weather in March.

December and April exhibit notable contrasts in weather patterns. In December, temperatures range from a chilly -5°C (23°F) at night to a mild 19°C (67°F) during the day, with an average of 7°C (45°F). This month experiences considerable precipitation, totaling 131 mm (5.2 in) over 16 days, accompanied by high humidity levels of 85%. In contrast, April brings a more temperate climate, with minimum temperatures around 0°C (31°F) and maximums reaching 27°C (80°F), averaging 11°C (52°F). Precipitation decreases significantly to 75 mm (2.9 in) across 12 days, and humidity lowers to 76%. For more details on the weather in April, visit Izmit weather in April.

In December, the weather is markedly colder with average temperatures ranging from a chilly -5°C (23°F) to a mild 19°C (67°F), accompanied by high humidity levels of 85%. This month also sees significant precipitation, averaging 131 mm (5.2 in) over 16 days, creating a damp and icy atmosphere. In contrast, May brings a substantial warming trend, with temperatures ranging from a comfortable 4°C (40°F) to a hot 33°C (91°F). The humidity decreases to 77%, and rainfall is lighter, averaging 90 mm (3.5 in) over 13 days. For more details on the weather in May, you can visit Izmit weather in May. This highlights a clear transition from the cold, wet conditions of December to the warm, more stable climate of May.

December and June present contrasting weather patterns. In December, temperatures range from a chilly -5°C (23°F) at night to a mild 19°C (67°F) during the day, with an average of 7°C (45°F). The month sees considerable precipitation, accumulating 131 mm (5.2 in) over 16 days, and experiences high humidity at 85%. In stark contrast, June offers a warmer environment, with nighttime temperatures rarely dropping below 8°C (47°F) and reaching a maximum of 32°C (89°F) during the day, averaging 20°C (68°F). Rainfall is slightly less at 103 mm (4.1 in) over 15 days, while humidity levels drop to a more comfortable 70%. For more details, check out Izmit weather in June.

December and July offer strikingly different weather patterns. In December, temperatures can drop to a chilly -5°C (23°F), with averages around 7°C (45°F) and highs reaching up to 19°C (67°F). This month also sees considerable precipitation, with 131 mm (5.2 in) falling over approximately 16 days, and humidity levels at a high 85%. In contrast, July experiences much warmer weather, with minimum temperatures around 13°C (55°F) and average highs of 22°C (72°F), peaking at 34°C (93°F). Rainfall is significantly lower in July, totaling just 71 mm (2.8 in) across 8 days, accompanied by a more comfortable humidity level of 63%. For a detailed look at the weather in July, visit Izmit weather in July.

December and August present vastly different weather conditions. In December, temperatures range from a chilly -5°C (23°F) to a mild average of 7°C (45°F), peaking at a maximum of 19°C (67°F). This month is characterized by significant precipitation, totaling 131 mm (5.2 in) over 16 days, combined with a high humidity level of 85%. In contrast, August experiences much warmer temperatures, with a minimum of 14°C (57°F), an average of 23°C (73°F), and highs reaching an impressive 36°C (96°F). Rainfall is scarce, totaling only 29 mm (1.2 in) across 5 days, alongside a more comfortable humidity of 55%. For more detailed weather insights, check out Izmit weather in August.

December weather in Izmit is significantly colder and wetter compared to September. In December, temperatures can drop as low as -5°C (23°F), with an average of 7°C (45°F) and a maximum of 19°C (67°F). The month also experiences higher precipitation levels, totaling 131 mm (5.2 in) over approximately 16 days, contributing to a humidity level of 85%. In contrast, September is much warmer, with minimum temperatures around 7°C (44°F), an average of 20°C (68°F), and highs reaching 36°C (97°F). Precipitation during September is notably lower at 51 mm (2.0 in) spread over just 9 days, resulting in a more comfortable humidity level of 60%. For more details on September weather in Izmit, you can check Izmit weather in September.

When comparing the weather in December and October, December tends to be much cooler and wetter. In December, temperatures range from a minimum of -5°C (23°F) to a maximum of 19°C (67°F), with an average of 7°C (45°F). This month also experiences higher precipitation, with 131 mm (5.2 in) falling over 16 days, contributing to a humidity level of 85%. In contrast, October enjoys milder temperatures, with a range from 3°C (38°F) to a warm maximum of 33°C (92°F) and an average of 15°C (59°F). Precipitation in October is significantly lower at 79 mm (3.1 in) over just 11 days, along with a lower humidity level of 73%. For more details on October weather, you can check Izmit weather in October.

In comparing the weather of December and November, December tends to be colder with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 19°C (67°F), while November showcases milder temperatures, peaking at 25°C (78°F) and a minimum of -1°C (31°F). August experiences significantly more rainfall, with December receiving 131 mm (5.2 in) over 16 days compared to November's 66 mm (2.6 in) across just 10 days. Additionally, December has a slightly higher humidity level at 85% compared to November's 82%, creating a more damp atmosphere. For more detailed information on November weather in this region, check out Izmit weather in November.

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Conclusion: What to Expect From December Weather in Izmit

As December settles over Izmit, the weather takes a noticeable turn, offering a striking contrast to the milder months preceding it. Temperatures dip significantly, with averages hovering around 7°C, while the chill can reach lows of -5°C at night. The atmosphere becomes drenched, with about 131 mm of precipitation spanning approximately 16 days, leading to an unmistakable sense of dampness as humidity levels rise to 85%. This month is characterized by its gloomy and wet demeanor, making it a unique time to experience Izmit's cool embrace. For more insights into the climate of this vibrant region, explore Izmit Climate.