December Weather in Kalymnos, Greece

Last updated: August 21, 2025

December in Kalymnos, Greece offers a mild escape with average temperatures around 15°C (60°F), reaching a comfortable maximum of 21°C (69°F). Visitors can expect cooler evenings, with temperatures dipping to a minimum of 9°C (48°F). The island experiences a notable 78% humidity this month, accompanied by approximately 179 mm (7.1 in) of rainfall over 15 days. Despite the wet weather, December presents a unique charm, showcasing Kalymnos’s stunning natural beauty and making it an ideal time for those seeking a tranquil winter retreat.

December Temperature in Kalymnos

As December settles in Kalymnos, Greece, temperatures reflect a gentle transition into winter, with daily minima around 9°C (48°F) and a comfortable average of 15°C (60°F). This month sees highs reaching 21°C (69°F), offering a mild respite compared to the scorching summer months. When you look at the overall trends, it's clear that December is cooler than the preceding months, yet it still retains a warm touch, enticing visitors with its pleasant climate. This blend of crisp air and moderate warmth creates an inviting atmosphere perfect for exploring the island’s stunning landscapes and rich history.

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

The chart illustrates December temperature patterns in Kalymnos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kalymnos, 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).
JanFebMarAprMayJunJulAugSepOctNovDec555757616773777875706660
Data source: Temperature data for Kalymnos 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 Kalymnos

In December, Kalymnos, Greece experiences a significant surge in precipitation, with an impressive total of 179 mm (7.1 in), marking it as one of the wettest months of the year. This increase in rainfall is accompanied by a rise in rainy days, peaking at 15 days, illustrating the clear transition from the relatively dry summer months. Compared to January's 150 mm, December leads the charge as the month with the highest precipitation, highlighting a seasonal shift that brings much-needed moisture to the island. As the colder months unfold, it’s evident that December serves as a pivotal time for revitalizing the island's landscape after the prolonged dry spell from June to August, setting the stage for a lush and vibrant spring.

December Precipitation Trends in Kalymnos

The chart displays monthly precipitation patterns in Kalymnos, 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 Kalymnos, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec150977530440043887179
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Kalymnos

In Kalymnos, Greece, December brings a noticeable humidity level of 78%, which sits comfortably in line with the broader trends observed throughout the year. The island experiences a consistent humidity range, with percentages lingering between 66% and 81%. The winter months showcase a subtle increase after the drier summer, peaking in May. As the year winds down, December's humidity reflects a slight uptick compared to November's 77%, suggesting a gradual transition toward the wetter winter season. This mild humidity contributes to the island's charm, offering a refreshing atmosphere that's perfect for exploring its natural beauty.

December Average Humidity in Kalymnos

This chart illustrates the average monthly humidity levels in Kalymnos, 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 Kalymnos is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%77%77%81%77%72%66%70%76%77%78%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Kalymnos

In Kalymnos, Greece, the UV Index shows a clear seasonal pattern, peaking during the summer months. December sees a moderate UV Index of 3, indicating a burn time of 30 minutes, which is a welcome relief after the intense exposure seen in the summer. From April to August, the UV levels soar to 10, categorizing the exposure as very high and significantly reducing safe sun exposure times to just 15 minutes. This trend highlights the importance of sun protection throughout the year, with notable spikes in UV intensity from March through September. As you enjoy the sunny climate of Kalymnos, it's essential to remain informed and vigilant about UV exposure. For detailed insights on the UV Index, visit Kalymnos UV Index.

Maximum UV Index Levels in Kalymnos for December

The chart shows the monthly maximum UV Index (UVI) for Kalymnos 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 Kalymnos typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3578101010108643
Data source: Kalymnos 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 Kalymnos

As the year winds down, December in Kalymnos, Greece offers a gentle embrace of sunlight, with 268 hours warming the island—a delightful conclusion to a year brimming with radiant days. The trend reveals a steady crescendo of sunshine from the winter months, peaking in the vibrant summer, where July shines the brightest with 425 hours. Although December's daylight tapers off compared to the exuberant light of summer, it still holds onto a comforting glow, encouraging locals and visitors alike to savor the island's beauty before the new year begins. This gentle shift from the sunlit heights of summer to the softer, albeit still pleasant, warmth of winter paints December as a month of reflection and seasonal charm in this beautiful Greek haven.

Monthly Sunshine Duration in Kalymnos: December Highlighted

The December sunshine duration represents the total number of hours Kalymnos 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.
JanFebMarAprMayJunJulAugSepOctNovDec214h271h334h353h403h412h425h396h350h326h277h268h
Data source: Kalymnos December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kalymnos During December

As December arrives in Kalymnos, Greece, the likelihood of enjoying sunny weather starts to wane, with only a 44% chance of sunshine. This marks a notable decline from the preceding months, particularly when compared to the consistent warmth of summer, where sunny days soar to 99% in July and August. The transition from the vibrant sunshine of late summer to the cooler, cloudier days of winter can be observed in the gradual drop from 80% in October to 48% in November. While December does not bring the same level of brightness as earlier months, it still offers a fair shot at enjoying pleasant weather, especially for those looking to escape winter in other parts of the world.

Percentage of Sunny Days in December in Kalymnos

The chart illustrates the percentage of sunny days in Kalymnos 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 Kalymnos experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec39%67%68%55%78%94%99%100%96%80%48%44%
Data source: Kalymnos December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kalymnos in December

In Kalymnos, Greece, December marks the conclusion of the sun's gradual descent towards its shortest day, offering around 9 hours of daylight. This duration mirrors January's light, suggesting a seasonal consistency as the year closes. As we glance back over the months, a distinct pattern emerges: daylight steadily increases from 10 hours in February, reaching a peak of 14 hours from May through July, before gently tapering off again. The transition from summer into autumn sees a graceful decline, with daylight gently dwindling from 13 hours in August to 11 hours in October, and finally settling back to the winter minimum. This rhythmic dance of daylight not only influences the island's vibrant lifestyle but also adds a unique charm to each season in this picturesque locale.

Average Daylight Hours in Kalymnos for December

The chart illustrates the variation in daylight duration in Kalymnos throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 55m10h 49m11h 58m13h 9m14h 8m14h 38m14h 22m13h 30m12h 22m11h 12m10h 10m9h 39m
Data source: Kalymnos daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Kalymnos

As December unfolds in Kalymnos, Greece, the island welcomes a brisk average wind speed of 8.4 m/s (19 mph), a lively breath of air that matches the earlier months of the year. Notably, December's winds echo the consistency seen from July through early November, stabilizing the coastal environment after a dip in the calmer months of May and October. This resurgence invites sailors and adventurers alike, reminiscent of March's and April’s spirited breezes, making it an excellent time for outdoor enthusiasts to embrace the island's stunning landscapes. With winds gently whipping through the Aegean, December in Kalymnos offers a vibrant yet inviting atmosphere, perfect for both exploration and relaxation.

Average December Wind Speed in Kalymnos

The chart displays monthly wind speed patterns in Kalymnos, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8.38.38.58.46.27.78.48.28.06.46.18.4 m/s
Data source: Kalymnos December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Kalymnos Compares to Other Months

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

In December, the weather is generally warmer with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 21°C (69°F), while January sees cooler conditions, with averages between 5°C (42°F) and 19°C (66°F). Precipitation is higher in December, totaling 179 mm (7.1 in) over 15 days, compared to January's 150 mm (5.9 in) spread over 13 days. Both months exhibit high humidity, with December at 78% and January slightly lower at 77%. For a detailed look at January weather specifics, check out the link: Kalymnos weather in January.

Comparing the weather in December and February reveals some notable differences. December enjoys a slightly warmer average temperature, ranging from a minimum of 9°C (48°F) to a maximum of 21°C (69°F), while February's temperatures are cooler, with a minimum of 5°C (41°F) and a maximum of 19°C (66°F). December also experiences more precipitation, with 179 mm (7.1 in) falling over approximately 15 days, compared to February's 97 mm (3.8 in) over about 10 days. Humidity levels remain quite similar, at 78% in December and 76% in February. For more detailed information on the weather patterns, you can check Kalymnos weather in February.

December and March present distinct weather characteristics, with December offering slightly warmer days but higher precipitation. In December, the temperatures range from a minimum of 9°C (48°F) to a maximum of 21°C (69°F), accompanied by 179 mm (7.1 in) of rain over 15 days, resulting in a humidity level of 78%. In contrast, March showcases cooler temperatures with a minimum of 5°C (41°F) and a maximum of 18°C (65°F). The month experiences significantly less rainfall, totaling 75 mm (3.0 in) over just 7 days, while maintaining a similar humidity level of 77%. For more insights on the weather in March, you can check out Kalymnos weather in March.

December and April in Kalymnos present notably different weather patterns. In December, temperatures range from a minimum of 9°C (48°F) to a maximum of 21°C (69°F), with an average of 15°C (60°F). This month is characterized by higher precipitation, averaging 179 mm (7.1 in) over 15 days and a humidity level of 78%. In contrast, April offers slightly warmer conditions with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 21°C (70°F), and an average of 16°C (61°F). However, April experiences significantly less rain, with only 30 mm (1.2 in) over just 4 days and a similar humidity level of 77%. For more detailed information, you can check Kalymnos weather in April.

In December, the weather is noticeably cooler with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 21°C (69°F), accompanied by significant precipitation of 179 mm (7.1 in) over approximately 15 days. The humidity sits at a relatively high level of 78%, contributing to a moist and often overcast atmosphere.

In contrast, May brings warmer temperatures, with a minimum of 15°C (60°F) and a maximum of 24°C (75°F), along with a much drier climate characterized by only 4 mm (0.1 in) of precipitation across the month, and no rainy days. The humidity in May is slightly higher at 81%, but the overall experience is more pleasant and sunny. For more detailed information, visit Kalymnos weather in May.

In December, the weather is cooler with average temperatures ranging from 9°C (48°F) to 21°C (69°F), and the region experiences significant rainfall, totaling 179 mm (7.1 in) over 15 days. This makes December quite humid, with levels reaching 78%. In contrast, June welcomes warmer temperatures, averaging between 16°C (61°F) and 27°C (82°F), accompanied by minimal precipitation of just 4 mm (0.1 in) over only 1 day, and a slightly lower humidity of 77%. For those interested in more detailed information, check out Kalymnos weather in June.

When comparing December and July weather, it's clear that they present vastly different climates. In December, temperatures range from a cool 9°C (48°F) to a pleasant 21°C (69°F), with an average temperature of around 15°C (60°F). The month is also characterized by significant rainfall, with about 179 mm (7.1 in) of precipitation over 15 days, resulting in a humidity level of 78%. In stark contrast, July boasts much warmer temperatures, with minimums of 22°C (71°F) and maximums reaching up to 29°C (84°F), averaging 25°C (77°F). Remarkably, July experiences no rainfall, leading to lower humidity levels of 71%. For more detailed information about July weather, visit Kalymnos weather in July.

When comparing the weather in December and August, the differences are striking. December experiences cooler temperatures, with a minimum of 9°C (48°F) and an average of 15°C (60°F), while August boasts a much warmer climate, featuring a minimum of 23°C (73°F) and an average of 25°C (78°F). Additionally, December sees considerable precipitation, averaging 179 mm (7.1 in) over 15 days, creating a quite humid environment at 78%. In contrast, August is dry, with no recorded precipitation and a lower humidity of 66%, making it ideal for outdoor activities. For those interested in the climate specifics, you can find more information here: Kalymnos weather in August.

When comparing the weather in September and December, distinct differences are evident. In December, temperatures range from a minimum of 9°C (48°F) to a maximum of 21°C (69°F), with an average temperature of 15°C (60°F). This month also experiences higher precipitation, totaling 179 mm (7.1 in) over 15 days, paired with a humidity level of 78%. In contrast, September boasts milder conditions with temperatures ranging from 19°C (66°F) to 28°C (83°F) and an average of 24°C (75°F). Remarkably, September enjoys very little rainfall, with only 4 mm (0.1 in) across zero days, and a lower humidity of 70%. For those interested in exploring more details about September weather, Kalymnos weather in September offers comprehensive information.

In comparing the weather between December and October, we see notable differences. December experiences cooler temperatures, with a minimum of 9°C (48°F) and an average of 15°C (60°F), while October boasts a milder climate, starting at a minimum of 15°C (59°F) and averaging 21°C (70°F). Additionally, October is significantly drier, receiving just 38 mm (1.5 in) of precipitation over 4 days, in contrast to December's 179 mm (7.1 in) spread across 15 days. Humidity levels are relatively similar, with December at 78% and October slightly lower at 76%. For more detailed insights on October's weather, you can check Kalymnos weather in October.

When comparing the weather of December and November, we see notable differences in both temperature and precipitation. December experiences cooler temperatures, with a minimum of 9°C (48°F) and an average of 15°C (60°F), compared to November's milder minimum of 12°C (53°F) and average of 19°C (66°F). Furthermore, December is significantly wetter, receiving 179 mm (7.1 in) of precipitation over 15 days, while November has just 87 mm (3.4 in) over 8 days. Humidity levels remain similar, with December at 78% and November slightly lower at 77%. For more details on November weather specifics, check out Kalymnos weather in November.

Compare Kalymnos's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Kalymnos

As December ushers in winter, Kalymnos experiences a notable shift in weather compared to other months. With cooler temperatures and increased precipitation, this month sees the island cloaked in a refreshing greenery. Unlike the warmer, more arid summer months, December offers an average temperature of around 15°C, providing a pleasant escape from the heat. However, the 78% humidity can make the cool air feel a bit damp, especially with a significant 179 mm of rain spread over 15 days. Despite the showers, December’s mild climate allows for outdoor adventures, making it a unique time to explore the island's beautiful landscapes. For a detailed look at the weather patterns year-round, check out Kalymnos Climate.