Last updated: August 21, 2025
January in Kos, Greece presents a mild Mediterranean climate, with maximum temperatures reaching around 18°C (66°F) and an average of 13°C (55°F). Visitors can expect cool evenings with minimum temperatures dipping to 5°C (41°F). This month typically sees 193 mm (7.6 in) of precipitation spread over approximately 14 days, contributing to the island's lush landscapes. With a humidity level of 77%, the atmosphere can feel quite damp, making this a great time for those who enjoy the serenity of nature without the bustling summer crowds. Whether strolling through charming villages or exploring historical sites, January offers a unique experience in Kos.
In January, Kos, Greece, welcomes winter with mild temperatures that range from a cool 5°C (41°F) at night to a pleasant 18°C (66°F) during the day. The average temperature hovers around 13°C (55°F), creating a comfortable climate for exploration. As the month transitions into February, there’s hardly a significant shift, with temperatures remaining stable, highlighting Kos's relatively temperate winter. March maintains this gentle warmth, signaling a gradual transition toward spring. This trend of mild weather continues until April, when the island starts to warm up noticeably, with minimums rising and maximums reaching 22°C (71°F). Overall, January serves as a serene start to the year, offering outdoor enthusiasts a unique opportunity to enjoy the natural beauty of Kos free from the summer crowds.
In January, Kos, Greece experiences a significant surge in precipitation, averaging a substantial 193 mm (7.6 in) over approximately 14 rainy days. This contrasts sharply with the drier months that follow, as February drops to 108 mm (4.2 in) and March further decreases to 95 mm (3.7 in). The decline in rainfall continues through spring, with April receiving only 36 mm (1.4 in) and May just a mere 7 mm (0.3 in). By the time summer arrives, the skies clear up completely, leading to zero precipitation in both July and August. This trend marks a striking transition from the wet winter months to the arid summer, highlighting Kos's unique climate variability.
In January, Kos, Greece experiences a humidity level of 77%, mirroring the levels found in both March and April, suggesting a consistent moisture presence as winter lingers. Notably, as the year progresses into May, humidity rises to 81%, indicating the onset of a more humid climate as summer approaches. This trend shifts dramatically by July and August, where humidity dips to 71% and 66%, respectively, providing a refreshing respite from the peak summer heat. Interestingly, humidity levels stabilize around 70% to 78% in the shoulder months of September through December, hinting at a transition toward the cooler, wetter winter months while maintaining a relatively high moisture content throughout the year.
In January, visitors to Kos, Greece can expect a UV Index of 3, indicating a moderate level of sun exposure with a burn time of about 30 minutes. As winter transitions into spring, the UV Index gradually increases, reaching 5 in February and peaking at a notable 7 in March. This upward trend continues through the warmer months, where the index soars to 10 from May to August, categorizing exposure as very high and significantly reducing safe outdoor activity time to just 15 minutes. September sees a slight decline to 8 before tapering off to 6 in October and 4 in November, reminiscent of January's lower levels. By December, the cycle completes with another moderate UV Index of 3, reinforcing the need for sun protection year-round. For more detailed information, check the Kos UV Index.
UV Risk Categories
January in Kos, Greece, typically greets visitors with 212 hours of sunshine, offering a gentle introduction to the year. As winter transitions to spring, the days gradually become brighter, with February shining for 269 hours. By March, the sunshine climbs to 331 hours, signaling that warmer days are on the horizon. April continues this delightful trend with 352 hours, while May and June see a remarkable leap to 401 and 410 hours, respectively, inviting visitors to bask in the Mediterranean glow. The summer months peak in July with 424 hours, but even as August follows with a still generous 396 hours, the sun remains a consistent companion. As autumn approaches, the sunshine gradually tapers off, with September at 349 hours and October at 324 hours. November and December again bring a return to the chill, but with 275 and 266 hours of sunshine, they still offer glimpses of warmth before the year closes. Thus, the trend illustrates a picturesque progression from winter's mild warmth to the vibrant sun-drenched days of summer, making Kos a compelling destination year-round.
In January, Kos, Greece, welcomes the new year with a 38% chance of sunny weather, making it one of the cooler, cloudier months of the year. This sets the stage for a notable shift in weather patterns as the season progresses; by February, the likelihood of sunshine skyrockets to 68%, indicating a promising transition into spring. The sunny days continue to increase through March and April, maintaining that 68% and 56% chance respectively, before blossoming into nearly perfect weather in the summer months. As we look towards May, a robust 79% chance of sun unfolds, culminating in an impressive 98% in July and a stunning 99% in August. Thus, while January may be less favorable for sun-seekers, the delightful prospects ahead make Kos an alluring destination as the season shifts.
In Kos, Greece, the daylight duration begins its gradual ascent in January, offering 9 hours of sunlight, which sets the stage for a steady increase as winter gives way to spring. By February, daylight extends to 10 hours, and this upward trend continues, reaching 11 hours in March. As the days grow longer, April and May bring a delightful bloom, with 13 and 14 hours of daylight, respectively, allowing for vibrant outdoor activities. The peak arrives in June through July, where the sun graces the island with a consistent 14 hours of light. As summer fades into autumn, a gentle decline ensues, with daylight tapering off to 12 hours in September and then descending to 9 hours again by December. This cyclical pattern highlights the enchanting rhythm of a Mediterranean winter leading into a sun-kissed summer, making Kos a year-round destination for those who cherish daylight.
In January, the winds in Kos, Greece whip at an average speed of 7.9 m/s (18 mph), setting a brisk tone for the new year. This lively gustiness is consistent, echoing a similar pattern seen in April and December, where the winds also reach 7.9 m/s. Following January, there is a slight dip in February and March, though the speeds remain moderate, hovering just below that threshold. As the months progress into summer, wind speeds mellow further, with May showcasing a notable decrease to 5.9 m/s (13 mph), while the breeze begins to pick up again in late summer. By the time we reach the calmer months of October and November, average wind speeds drop to 5.6 m/s and 5.5 m/s, respectively. This seasonal ebb and flow of wind not only shapes the climate but also enhances the tranquil charm of this Mediterranean haven, making Kos a delightful escape any time of the year.
Weather in Kos varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Kos, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February exhibit similar temperature ranges, with January recording a minimum of 5°C (41°F) and an average of 13°C (55°F), while February slightly edges lower on the minimum at 4°C (40°F) but shows a marginal rise in the average to 14°C (57°F). Both months experience maximum temperatures peaking at 18°C (66°F). However, January is notably wetter, with 193 mm (7.6 in) of precipitation over 14 days compared to February's 108 mm (4.2 in) across 11 days. Humidity levels remain fairly consistent, with January at 77% and February slightly lower at 76%. For a detailed comparison of February weather, you can visit Kos weather in February.
January and March exhibit some similarities in their weather patterns, yet notable differences set them apart. Both months feature a maximum temperature that hovers around 18°C (65°F), but March offers a slightly higher average temperature of 14°C (58°F) compared to January's 13°C (55°F). Precipitation also decreases significantly in March, with only 95 mm (3.7 in) over 8 days, compared to January's 193 mm (7.6 in) over 14 days. Humidity remains consistent at 77% for both months, providing a relatively moist atmosphere. For a more detailed look at what to expect during this time, you can check out Kos weather in March.
In January, the weather is cooler, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 18°C (66°F) and an average of 13°C (55°F). The month experiences considerable rainfall, with about 193 mm (7.6 in) of precipitation over 14 days, maintaining a humidity level of 77%. In contrast, April brings a mild warmth, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 22°C (71°F) and an average of 16°C (62°F). Rainfall is significantly less, totaling 36 mm (1.4 in) across just 5 days, while humidity remains stable at 77%. This shift from the wetter and cooler January to the drier and warmer April makes for a more pleasant outdoor experience during spring. For more detailed information about the weather in April, visit Kos weather in April.
In January, the weather is notably cooler, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 18°C (66°F), accompanied by considerable precipitation of 193 mm (7.6 inches) over about 14 days. Meanwhile, May brings a significant shift, showcasing milder temperatures with a minimum of 15°C (60°F) and a maximum of 24°C (76°F) and a drastic reduction in rainfall, only 7 mm (0.3 inches) across just 2 days. The humidity in January is moderately high at 77%, while it slightly increases to 81% in May, adding to the feeling of comfort during this warmer month. For more details on May weather, you can check Kos weather in May.
In January, the weather is notably cooler, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 18°C (66°F) and an average of 13°C (55°F). This month sees significant precipitation at 193 mm (7.6 in) over 14 days, contributing to a relatively humid atmosphere with 77% humidity. In contrast, June showcases a much warmer climate, with temperatures starting at a minimum of 16°C (62°F) and peaking at 29°C (84°F), averaging 23°C (73°F). The rainfall drops dramatically to just 6 mm (0.2 in) across one day, while humidity remains consistent at 77%. This stark contrast in weather between January and June highlights the transition from the chilly, wet conditions of winter to the warm, dry atmosphere of summer. For more details, visit Kos weather in June.
The weather in January is characterized by milder temperatures, with minimums around 5°C (41°F) and maximums reaching up to 18°C (66°F). This month experiences significant rainfall, totaling 193 mm (7.6 in) over approximately 14 days, with humidity levels averaging 77%. In contrast, July brings warm and sunny conditions, with temperatures ranging from a minimum of 22°C (72°F) to a maximum of 30°C (86°F). Remarkably, this month sees no precipitation, contributing to lower humidity levels of 71%. For a detailed overview of July's climate, you can refer to Kos weather in July.
The weather in January is characterized by cool temperatures, with averages ranging from a minimum of 5°C (41°F) to a maximum of 18°C (66°F), accompanied by significant rainfall totaling 193 mm (7.6 in) over about 14 days. In contrast, August offers a much warmer climate, with temperatures ranging from a minimum of 23°C (74°F) to a pleasant maximum of 30°C (87°F), and remarkably, no precipitation at all during the month. Additionally, humidity levels drop from 77% in January to 66% in August, making the latter month feel more comfortable for outdoor activities. For more detailed information on August weather, visit Kos weather in August.
In January, the weather is significantly cooler, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 18°C (66°F) and an average of 13°C (55°F). This month also experiences high levels of precipitation, accumulating around 193 mm (7.6 in) over approximately 14 days, along with a humidity level of 77%. In contrast, September offers much warmer conditions with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 28°C (84°F), averaging 24°C (76°F). Additionally, precipitation is minimal in September, totaling just 4 mm (0.2 in) over 1 day, and the humidity is slightly lower at 70%. For a more detailed look at the September weather, you can refer to this link: Kos weather in September.
January and October present contrasting weather experiences. In January, temperatures fluctuate from a minimum of 5°C (41°F) to an average of 13°C (55°F), reaching a maximum of 18°C (66°F). The month is characterized by significant precipitation, totaling 193 mm (7.6 in) over 14 days, paired with a humidity level of 77%. In stark contrast, October enjoys milder temperatures, ranging from a minimum of 15°C (59°F) to an average of 21°C (71°F) and a maximum of 25°C (78°F). This month receives considerably less rainfall, with only 57 mm (2.2 in) over 4 days, and maintains a similar humidity level of 76%. For more detailed information, you can explore Kos weather in October.
In January, the weather is cooler with a minimum temperature of 5°C (41°F) and an average of 13°C (55°F), reaching a maximum of 18°C (66°F). This month is also quite wet, with 193 mm (7.6 in) of precipitation over 14 days, leading to a humidity level of 77%. In contrast, November brings milder temperatures, starting at a minimum of 11°C (52°F) and averaging 19°C (66°F), peaking at 23°C (74°F). This month has significantly less rainfall, totaling 123 mm (4.8 in) over 9 days, yet maintains the same 77% humidity. For more details, you can check Kos weather in November.
In comparing the weather between January and December, January tends to be slightly cooler with average temperatures ranging from a minimum of 5°C (41°F) to a maximum of 18°C (66°F), while December offers milder conditions, with temperatures from a minimum of 8°C (47°F) to a maximum of 20°C (69°F). Additionally, January experiences more precipitation, totaling 193 mm (7.6 in) over 14 days, compared to December's 237 mm (9.3 in) over 15 days. Humidity levels are quite similar, hovering around 77% in January and 78% in December. For a more detailed look at December's weather patterns, visit Kos weather in December.
As January unfolds in Kos, temperatures are mild but cooler than the warmer months, with average highs around 13°C (55°F) and occasional dips to 5°C (41°F). Unlike the bustling summer season, January brings increased rainfall, contributing to the island's lush landscapes, with about 14 days of precipitation and a humidity level of 77%. While not ideal for sunbathing, this month offers a peaceful escape and a unique charm, allowing travelers to experience the tranquil beauty of the island without the typical tourist crowds. For a deeper understanding of how January weather fits into the overall climate, explore the link: Kos Climate.