Last updated: August 21, 2025
In December, Ios, Greece experiences a mild winter characterized by a maximum temperature of 20°C (68°F) and an average of 15°C (60°F). With minimum temperatures dipping to 9°C (49°F), this enchanting island offers a cozy escape for travelers. The month sees 82 mm (3.2 in) of precipitation spread over approximately 13 days, creating a lush, vibrant landscape. High humidity levels at 78% add to the island's charm, making December an ideal time to explore Ios's natural beauty while enjoying its calm, serene atmosphere.
In December, Ios, Greece, experiences a gentle transition into winter, showcasing mild temperatures perfect for exploring its picturesque landscapes. The month begins with a minimum temperature of 9°C (49°F), while the average settles around 15°C (60°F) and peaks at a comfortable 20°C (68°F). This marks a noticeable drop from the warmer fall months, yet the climate remains pleasant compared to the chillier core of winter. As visitors stroll through the charming streets or enjoy the serene beaches, the island invites a quieter, more reflective ambiance, perfect for soaking in the natural beauty without the summer crowds.
In December, Ios, Greece experiences a notable uptick in precipitation, with an average of 82 mm (3.2 in) accumulated over approximately 13 rainy days. This is a significant increase compared to previous months, reflecting the transition from the drier summer months, where July and August saw almost no rainfall, to a wetter winter season. Interestingly, December's rainfall is just slightly lower than January's peak, suggesting that winter months are characterized by increased precipitation, creating a lush and vibrant landscape. This trend not only highlights the seasonal contrasts in Ios but also sets the stage for the island's picturesque charm during the cooler months, inviting visitors to experience its serene beauty.
December in Ios, Greece ushers in a gentle increase in humidity, reaching 78% as the year draws to a close. This slight rise marks a shift from the lower levels experienced in the summer months, where humidity dipped to as low as 66% in August. As we transition from November's 77%, the steady consistency of humidity levels throughout most months—including 77% in April and June—becomes evident. Generally, Ios enjoys a relatively humid climate, particularly in the spring and early summer, with 81% in May signaling the peak of moisture. December serves as a reminder of the island's mild, wet winter climate, setting the stage for a refreshing start to the new year.
As December arrives in Ios, Greece, the UV Index drops to a moderate 3, with a recommended burn time of 30 minutes. This trend marks the end of the year, where the sun's intensity significantly wanes after months of high exposure during the summer. From the very high UV levels of 10 seen in the peak months of July and August, the gradual decline to a moderate reading in December is a welcome change for those looking to enjoy the outdoors without excessive sunburn risk. Travelers and locals alike can now safely bask in the mild winter sun while being mindful of their skin protection. For detailed insights on UV levels throughout the year, check out Ios UV Index.
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December in Ios, Greece, greets visitors with a comfortable 261 hours of sunshine, wrapping up a year where the warm glow of sunlight gradually intensified. Starting the year with a modest 215 hours in January, daylight gradually climbed, peaking in the vibrant summer months of June and July with impressive tallies of 412 and 425 hours, respectively. As the seasons transitioned into autumn, sunshine hours see a gentle decline, with December providing a softer, yet still inviting atmosphere. This gradual shift showcases Ios as a delightful year-round destination, where the festive charm of December is accompanied by a lingering warmth, inviting travelers to bask in the sun before the year draws to a close.
As December rolls in, Ios, Greece experiences a transitional phase in its weather patterns, with a 50% chance of sunny days. This marks a notable decrease from the sun-drenched heights of the summer months, where the likelihood soars to an impressive 99% in July and remains nearly perfect in August. The trend suggests that as the year progresses toward winter, the sunshine diminishes, with November already dipping to 48%. However, despite the cooler temperatures and shorter days, December still offers a balanced mix of potential sunny spells, making it a charming month for those seeking a quieter getaway amidst the beautiful backdrop of Ios.
As December arrives in Ios, Greece, daylight hours dip back down to 9 hours, mirroring the short days of January. This seasonal decrease is part of a captivating trend where daylight gradually increases from the winter solstice towards the longer, sun-soaked days of summer. From January's 9 hours, daylight steadily climbs, peaking at 14 hours during the height of summer in June, July, and August. Following this summer peak, daylight begins to recede as autumn settles in, tapering off to 12 hours in September and returning to 10 hours in November. As the year closes in December, Ios welcomes a tranquil and reflective atmosphere under its shorter, yet serene daylight, hinting at the cycle of renewal that lies just ahead with the coming year.
As December settles over Ios, Greece, the average wind speed picks up to 8.1 m/s (18 mph), mirroring the breezy conditions experienced in both March and September. This trend of increased winds during the winter months offers a marked contrast to the gentle summer breezes that characterize the season, which typically hover around 5.1 m/s (11 mph) in June. Interestingly, the consistent rise in wind speeds from late summer through early winter suggests that while Ios may be winding down from the bustling tourist season, the island remains lively with a refreshing, invigorating breeze. As travelers embrace the cooler temperatures of December, the winds serve as a reminder of the island's dynamic coastal climate, perfect for beach walks and scenic views.
Weather in Ios varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ios, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January weather conditions in Ios show some notable differences. December features a milder average temperature with a minimum of 9°C (49°F) and an average of 15°C (60°F), while January sees a cooler average temperature with a minimum of 4°C (39°F) and an average of 13°C (56°F). Both months experience similar maximum temperatures, capped at 20°C (68°F). Precipitation is slightly higher in January with 88 mm (3.5 in) compared to December's 82 mm (3.2 in), although both months have a similar number of rainy days, with December experiencing precipitation on 13 days and January on 12 days. Humidity remains relatively stable, with December at 78% and January at 77%. To gain further insight into the weather conditions in January, you can refer to this link: Ios weather in January.
December and February in Ios present slightly differing weather patterns, reflecting the transition from late autumn to early spring. In December, temperatures range from a minimum of 9°C (49°F) to a maximum of 20°C (68°F), with an average of 15°C (60°F). This month also experiences higher precipitation, totaling 82 mm (3.2 in) over about 13 days, contributing to a humidity level of 78%. In contrast, February tends to be a bit cooler, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 18°C (65°F) and an average of 14°C (57°F). The precipitation decreases to 57 mm (2.3 in) over 8 days, with slightly lower humidity at 76%. For more information on February weather, you can visit Ios weather in February.
When comparing the weather in December and March, December tends to be slightly milder, with average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 20°C (68°F). In contrast, March sees a slightly cooler range, with minimum temperatures dropping to 6°C (43°F) and maximums reaching 18°C (65°F). Precipitation is notably higher in December, occurring over 13 days and totaling 82 mm (3.2 in), while March experiences less rain, only 42 mm (1.7 in) across 7 days. Humidity levels remain similar in both months, hovering around 77-78%. For more details on March weather specifically, you can check out Ios weather in March.
In December, the weather features a mild climate with average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 20°C (68°F). This month also experiences significant precipitation, with 82 mm (3.2 in) falling over 13 days, contributing to a humidity level of 78%. In contrast, April sees slightly warmer conditions, with minimum temperatures at 10°C (51°F) and an average of 16°C (61°F), while still reaching a maximum of 20°C (69°F). Notably, precipitation in April is much lower, totaling only 15 mm (0.6 in) over just 2 days, resulting in a slightly lower humidity of 77%. For more detailed insights about April weather, check out Ios weather in April.
December weather is characterized by cooler temperatures, with averages ranging from a minimum of 9°C (49°F) to a maximum of 20°C (68°F). It experiences significant precipitation, with about 82 mm (3.2 in) falling over 13 days, contributing to a moderately humid atmosphere at 78%. In contrast, May brings warmer and more stable conditions, boasting a minimum of 15°C (60°F) and a maximum of 23°C (74°F). Precipitation is minimal, with only 4 mm (0.1 in) recorded over zero days, alongside slightly higher humidity at 81%. For a detailed overview of the weather in May, you can find more information here: Ios weather in May.
December weather on Ios showcases mild temperatures, with daily averages ranging from 9°C (49°F) to a maximum of 20°C (68°F). The month experiences significant precipitation, totaling 82 mm (3.2 in) over 13 days, and maintains a relatively high humidity level of 78%. In contrast, June brings warmer conditions, with temperatures soaring between 18°C (64°F) and 27°C (81°F), along with minimal rainfall of just 3 mm (0.1 in) on only 1 day. The humidity in June remains comparable at 77%, creating a pleasant summer atmosphere. For more details, you can check Ios weather in June.
December and July present striking contrasts in weather patterns. In December, temperatures range from a mild 9°C (49°F) at night to a comfortable high of 20°C (68°F) during the day, accompanied by significant rainfall averaging 82 mm (3.2 in) over 13 days, which contributes to a humidity level of 78%. In stark contrast, July boasts much warmer temperatures, with a minimum of 22°C (72°F) and daily averages reaching up to 28°C (83°F). Remarkably, July experiences virtually no rainfall—0 mm—over the entire month and a lower humidity of 71%, making it ideal for outdoor activities. For a closer look at what to expect in July, check out Ios weather in July.
December and August offer strikingly different weather conditions. In December, temperatures range from a minimum of 9°C (49°F) to a maximum of 20°C (68°F), with an average of 15°C (60°F). This month also sees considerable precipitation, with 82 mm (3.2 in) falling over 13 days, and humidity levels at 78%. In sharp contrast, August boasts warmer temperatures, with a minimum of 22°C (72°F) and a maximum of 29°C (85°F), averaging 25°C (77°F). Notably, August experiences minimal rainfall, with only 1 mm (0.0 in) and no rainy days, along with lower humidity at 66%. For more details, check out Ios weather in August.
In December, the weather in Ios tends to be cooler and wetter compared to September. December temperatures range from a minimum of 9°C (49°F) to a maximum of 20°C (68°F), with an average of 15°C (60°F). The month also sees about 82 mm (3.2 in) of precipitation over 13 days, resulting in a higher humidity level of 78%. In contrast, September enjoys much warmer weather, with temperatures ranging from a minimum of 19°C (67°F) to a maximum of 27°C (81°F), averaging 23°C (74°F). This month experiences minimal rainfall, with only 3 mm (0.1 in) over 0 days, and a lower humidity of 70%. For a more detailed look at September's climate, check out Ios weather in September.
In December, the weather tends to be cooler and wetter compared to October. While December experiences average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 20°C (68°F), October boasts warmer conditions with average temperatures between 15°C (60°F) and 26°C (79°F). Additionally, December receives significantly more precipitation, accumulating 82 mm (3.2 in) over 13 days, while October sees only 18 mm (0.7 in) across just 3 days. Despite being nearly equal in humidity, with December at 78% and October at 76%, October's milder temperatures make it the more pleasant month overall for outdoor activities. For more detailed insights, check out Ios weather in October.
In comparing the weather of December and November, December brings cooler temperatures, with a minimum of 9°C (49°F) and an average of 15°C (60°F), while November maintains a slightly warmer minimum of 12°C (55°F) and an average of 18°C (65°F). Additionally, December experiences more precipitation, totaling 82 mm (3.2 in) over 13 days, compared to November's 48 mm (1.9 in) across just 6 days. Humidity levels are quite similar, with December at 78% and November at 77%. For more detailed insights, you can check Ios weather in November.
As December unfolds on Ios, the island experiences a notable shift in weather compared to the warmer summer months. With temperatures averaging around 15°C (60°F), the crisp air invites visitors to enjoy the serene beauty of the landscape, albeit with cooler evenings. Unlike the dry, sun-soaked days of summer, December brings a more moist atmosphere, marked by increased precipitation averaging 82 mm (3.2 in) over about 13 days. This added humidity, around 78%, creates a refreshing yet cool ambiance, making it the perfect time for exploring Ios’ scenic views and historical sites without the summer crowds. For a deeper dive into seasonal variations, check out Ios Climate.