Last updated: February 6, 2025
September in Kos offers a delightful Mediterranean climate, featuring a maximum temperature of 28°C (84°F) and a comfortable average of 24°C (76°F). With a minimum temperature of 19°C (66°F), evenings are pleasantly mild. This month sees minimal rainfall, with only 4 mm (0.2 in) of precipitation recorded across just 1 day, making it an ideal time for outdoor activities. Humidity levels hover around 70%, adding a touch of warmth to the crisp air, ensuring visitors enjoy the best of summer's last embrace.
In September, Kos, Greece, enjoys a pleasant transition into autumn, with temperatures that are both warm and inviting. The month begins with minimums around 19°C (66°F), making it much more comfortable than the peak summer months. Daytime highs reach up to 28°C (84°F), offering plenty of sunshine for beachgoers and outdoor enthusiasts alike. With an average temperature of 24°C (76°F), visitors can expect balmy days that are perfect for exploring the island's rich history and stunning landscapes. As summer wanes, the weather remains delightful, allowing for enjoyable evenings that linger pleasantly into the night. This blend of warmth and comfort makes September an ideal time to visit Kos, as the island transitions gracefully from the heat of summer to the milder days of autumn.
September in Kos, Greece marks a subtle transition as summer draws to a close with minimal rainfall. With just 4 mm (0.2 in) of precipitation recorded over a single day, it’s clear that this month continues the trend of dryness established in the preceding summer months of July and August, which saw 0 mm of rain. This pattern contrasts sharply with the wetter months that follow, as precipitation begins to rise in October and November, with totals reaching 57 mm (2.2 in) and 123 mm (4.8 in), respectively. The single rainy day in September provides a gentle reminder of the approaching fall, offering just enough moisture to freshen the landscape before the more significant autumn rains arrive.
As September rolls in on the charming island of Kos, Greece, humidity levels settle at a moderate 70%, marking a subtle decline from the summer heat. After experiencing the driest conditions in July and August, where humidity dipped to 71% and 66% respectively, September ushers in a slight increase as the hotter months recede. This trend of mild humidity persists into the fall, with levels climbing back to 76% by October. Overall, the yearly patterns highlight a peak in humidity from late spring through early summer, while the cooler months maintain relatively consistent moisture levels, ensuring Kos remains a fabulous destination year-round for those who enjoy a temperate coastal climate.
As summer winds down in Kos, Greece, September still offers a notable UV Index of 8, categorizing it as very high exposure. This is a slight decrease from the peak of 10 experienced in the preceding months, yet it maintains a burn time of only 15 minutes, highlighting the need for adequate sun protection. The trend shows a gradual easing of UV intensity as the seasons transition, moving towards October's high index of 6. For those soaking up the sun in September, it’s crucial to stay vigilant about sun safety even as temperatures remain warm. Discover more about the UV levels throughout the year at Kos UV Index.
UV Risk Categories
As summer gracefully gives way to autumn, September in Kos, Greece continues to bask in the warm embrace of sunshine, boasting an impressive 349 hours of sunlight. This month stands as a vibrant bridge, retaining much of the summer's brightness while hinting at the cooler days ahead. After the peak of 424 hours in July, sunlight begins to taper off, yet September's glow remains significant, greatly surpassing the earlier months like January and February, which barely muster over 200 hours. The gradual decline from the peak in July signals a beautiful transition; visitors can still enjoy longer beach days and breathtaking sunsets, making it a perfect time to experience the island's charm before the winter chill sets in.
September in Kos, Greece, marks a delightful transition towards the end of summer, boasting a remarkable 95% chance of sunny weather. This month enjoys a high probability of clear skies, closely following the peak sunny months of July and August, which take the lead at 98% and 99%, respectively. As summer gradually gives way to autumn, the sunny days persist, making September an ideal time for sun-seekers to relish the warm Mediterranean climate while also avoiding the summer crowds. With such a strong likelihood of sunshine, visitors can fully embrace the vibrant beauty of Kos, from its stunning beaches to its rich historical sites, ensuring an unforgettable experience.
As summer transitions into autumn, September in Kos, Greece brings a gentle decline in daylight duration, with the sun shining for 12 hours. This marks a subtle shift from the peak summer months of June through August, where daylight reached a maximum of 14 hours. The vibrant energy of May to July gradually fades, but the pleasant early autumn still boasts a generous amount of light for travelers seeking to enjoy the island's beauty. As the days shorten further into October and November, locals and visitors alike can relish the enduring warmth of lingering daylight, embodying the essence of a Mediterranean fall.
As summer transitions to autumn, September in Kos, Greece experiences a gentle shift in wind patterns. With an average wind speed of 7.2 m/s (16 mph), the breezes are slightly milder than the peak summer months, hovering around 7.5 to 7.6 m/s. This subtle decline in wind intensity hints at the approaching cooler seasons, yet still provides refreshing gusts perfect for beach outings and outdoor activities. Interestingly, September's winds continue to be more robust than those that follow in October and November, making it a delightful time for visitors seeking a balance of warmth and a soft sea breeze. The prevailing winds throughout the year, including a notable resurgence in December, create a charming backdrop for both relaxation and adventure in this beautiful Greek island.
The weather in Kos changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Kos and find detailed weather information for every month.
September offers a warm and pleasant climate, with average temperatures ranging from a comfortable 19°C (66°F) at night to a high of 28°C (84°F) during the day. The month features minimal rainfall, with only about 4 mm (0.2 in) over just a single day, resulting in a relatively low humidity level of around 70%. In contrast, January experiences significantly cooler temperatures, averaging between 5°C (41°F) and 18°C (66°F). This winter month sees a substantial increase in precipitation, totaling 193 mm (7.6 in) across 14 days, and exhibits a higher humidity of 77%. For a detailed look at the winter conditions on the island, check out Kos weather in January.
September and February showcase stark contrasts in weather. In September, temperatures are pleasantly warm, ranging from a minimum of 19°C (66°F) to a maximum of 28°C (84°F), with average conditions around 24°C (76°F). This month experiences minimal rainfall, with only 4 mm (0.2 in) of precipitation over just one day, and humidity levels at a moderate 70%. In contrast, February brings much cooler temperatures, with a minimum of 4°C (40°F) and a maximum of 18°C (66°F), averaging only 14°C (57°F). This winter month is significantly wetter, receiving 108 mm (4.2 in) of rain over 11 days, while humidity climbs to 76%. For more detailed insights, you can check out Kos weather in February.
September and March exhibit stark contrasts in weather conditions. September enjoys warmer temperatures, with averages around 24°C (76°F) and maximums peaking at 28°C (84°F), while March offers a cooler atmosphere, averaging only 14°C (58°F) and reaching a maximum of 18°C (65°F). In terms of rainfall, September is relatively dry with only 4 mm (0.2 in) over just 1 day, whereas March experiences significantly more precipitation, accumulating 95 mm (3.7 in) across 8 rainy days. Additionally, humidity levels are slightly higher in March at 77%, compared to 70% in September. For a more detailed overview of March weather, visit Kos weather in March.
In September, the weather is notably warmer, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 28°C (84°F), while April experiences much cooler temperatures, with averages between 9°C (49°F) and 22°C (71°F). Precipitation is minimal in September, totaling just 4 mm (0.2 in) over a single day, whereas April sees significantly more rain, with 36 mm (1.4 in) spread across five days. The humidity is slightly lower in September at 70%, compared to 77% in April, making early autumn feel more comfortable despite higher temperatures. For more details on the April weather conditions, visit Kos weather in April.
In September, the weather tends to be warmer with average temperatures reaching up to 24°C (76°F) and maximums hitting 28°C (84°F), while humidity hovers around 70%. The month also sees minimal precipitation, with only about 4 mm (0.2 in) falling over just one day. In contrast, May generally experiences cooler temperatures, with averages of 20°C (68°F) and highs of 24°C (76°F), alongside slightly higher humidity at 81%. Precipitation in May is also more frequent, totaling 7 mm (0.3 in) across two days. For more details, you can check out this link: Kos weather in May.
In comparing the weather of September and June, both months feature warm temperatures, but September generally has slightly higher minimum and average temperatures. In September, the temperatures range from a low of 19°C (66°F) to a high of 28°C (84°F), while June's temperatures range from 16°C (62°F) to a maximum of 29°C (84°F). Interestingly, despite similar high temperatures, June has marginally higher precipitation at 6 mm (0.2 in) compared to September's 4 mm (0.2 in), and June also experiences slightly greater humidity at 77%, compared to September's 70%. For more detailed information about June weather, you can visit Kos weather in June.
In September, temperatures are slightly milder, with a minimum of 19°C (66°F) and an average of 24°C (76°F) compared to July's warmer temperatures, where the minimum is 22°C (72°F) and the average is 25°C (78°F). While July experiences no precipitation, September sees a little rainfall with 4 mm (0.2 in) over just one day. Humidity levels remain similar, with September at 70% and July at 71%. For those interested in a detailed overview of July weather, check out Kos weather in July.
September brings a slight decrease in temperature compared to August, with minimums dropping from 23°C (74°F) to 19°C (66°F), and average highs reducing from 30°C (87°F) to 28°C (84°F). While August experiences dry conditions with no recorded precipitation, September sees a modest 4 mm (0.2 in) of rain over just one day, indicating a transition towards the wetter season. Humidity also rises slightly in September to 70%, compared to 66% in August, creating a more humid but still warm atmosphere. For more details on August weather, you can visit Kos weather in August.
In September, the weather features warmer temperatures with a minimum of 19°C, averaging 24°C, and a maximum of 28°C, accompanied by low precipitation at just 4 mm over one day, and a humidity of 70%. In contrast, October brings cooler temperatures, with a minimum of 15°C, an average of 21°C, and a maximum of 25°C. Additionally, October experiences significantly more rainfall, totaling 57 mm over four days, and higher humidity at 76%. For a detailed look at weather conditions in October, you can check out Kos weather in October.
September and November present quite contrasting weather conditions. In September, temperatures are generally warmer, with minimums around 19°C (66°F) and averages reaching 24°C (76°F), peaking at a maximum of 28°C (84°F). This month experiences minimal rainfall, with only 4 mm of precipitation over just 1 day and a humidity level of 70%. In stark contrast, November sees cooler temperatures, with a minimum of 11°C (52°F) and an average of 19°C (66°F), peaking at 23°C (74°F). This month also brings significantly more precipitation, with 123 mm (4.8 in) over 9 rainy days and a slightly higher humidity of 77%. For more detailed insights, Kos weather in November provides an in-depth look at the climatic conditions during this month.
September and December present starkly contrasting weather conditions. In September, temperatures are pleasantly warm, with averages around 24°C (76°F) and minimal precipitation of just 4 mm (0.2 in) over a single day, resulting in a comfortable humidity level of 70%. In contrast, December brings cooler temperatures, with averages dropping to 15°C (60°F) and a significant increase in rainfall, totaling 237 mm (9.3 in) over 15 days. The humidity also rises slightly to 78%, making the atmosphere feel a bit more damp. For more detailed information, you can check Kos weather in December.
As summer gradually yields to autumn, September in Kos offers a delightful transition with warm temperatures and relatively low humidity, making it an ideal time for outdoor adventures. Unlike the intense heat of July and August, September brings a more moderate climate, with sunny days complemented by occasional light rain, fostering a refreshing atmosphere. Visitors can enjoy plenty of sunshine without the summer crowds, making it a perfect time for beachgoers and explorers alike. For a detailed overview of how September's weather stacks up against the rest of the year, check out Kos Climate.