Last updated: August 27, 2025
Experience the vibrant September weather in Kastamonu, Turkey, where temperatures offer a delightful mix, soaring to a maximum of 37°C (98°F) while averaging around 17°C (63°F). Visitors can enjoy the refreshing contrast of cooler evenings with a minimum drop to 3°C (38°F). Although the month sees an average precipitation of 26 mm (1.0 in) over 6 days, humidity levels linger around 57%, adding a gentle touch to the autumn air. Whether you're exploring scenic landscapes or historic sites, Kastamonu's September climate presents an inviting atmosphere for all travelers.
As September rolls into Kastamonu, Turkey, the temperatures begin to signal a transition from the sweltering summer to a milder climate. With minimums around 3°C (38°F) and averages hovering at a comfortable 17°C (63°F), the early days of autumn offer a pleasant reprieve from the intense heat of July and August, where highs can soar to 37°C (98°F). This month notably allows for outdoor activities with its crisp, yet inviting weather, as the landscape subtly shifts in preparation for the coming cooler months. The gentle decrease in temperature sets the stage for the beautiful autumn foliage that Kastamonu is known for, making it a memorable time for visitors and locals alike.
In September, Kastamonu experiences a slight decrease in precipitation, with 26 mm (1.0 in) of rainfall measured over 6 days. Following the dry summer months of July and August, which recorded only 32 mm and 25 mm respectively, September marks a subtle shift as the region transitions into autumn. Although the amount of rain is modest, it is notable that the frequency of rainy days remains consistent with the preceding months. This pattern indicates the beginning of a wetter season, hinting at a promising outlook for the months ahead, as the landscape starts to prepare for the lush transformation that cooler, rainier weather brings.
As summer wanes into fall, September in Kastamonu, Turkey, marks a notable shift in humidity levels. Following the drier months of July and August, where humidity dipped to a refreshing 45%, September sees a slight rebound, with humidity rising to 57%. This increase signals the approach of autumn, characterized by milder temperatures and a return to the more moist conditions typical of the earlier months in the year. Compared to the higher levels experienced in January and February at 87%, September's humidity indicates a transitional phase, offering a comfortable balance before the heavier moisture returns in late fall and winter. Overall, Kastamonu experiences a clear trend of decreasing humidity through summer, culminating in a subtle yet significant uplift as it embraces the seasonal change.
September in Kastamonu, Turkey, sees a UV Index of 8, categorizing it as very high. This marks a slight decline from the summer peak but remains significant, indicating that residents and visitors should be cautious while enjoying outdoor activities. With a burn time of just 15 minutes, it’s essential to apply sunscreen or seek shade to protect your skin. This trend reflects the late-summer sun's intensity, as we transition into autumn, where UV levels will eventually taper off. For detailed insights on UV levels throughout the year, check out the Kastamonu UV Index.
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In Kastamonu, Turkey, September shines with approximately 341 hours of radiant sunlight, marking a notable transition from the peak summer months. As the year progresses, the amount of sunshine generally trends upward, peaking in July with 426 hours before gradually declining into the autumn. September's hours reflect a healthy balance, offering clear skies and warm days that suggest lingering summer vibes while hinting at the crispness of fall. This month serves as a pivotal moment where the warmth of summer gently fades, making way for the rich hues and cooler temperatures of October, which still boasts a respectable 303 hours of sunshine. Overall, Kastamonu’s weather in September creates an inviting atmosphere, perfect for outdoor exploration and enjoying the natural beauty of the region.
As September rolls into Kastamonu, Turkey, the chance of sunshine settles at a moderate 47%, a figure that reflects the easing transition from the hot summer months. This percentage positions September comfortably between the peak of summer's glory—where sunlit days soar to 68% in July and 64% in August—and the cooler autumn months, which see a slight uptick in cloud cover. While the likelihood of sunny weather in September is not as high as in the peak of summer, it still offers ample opportunities for outdoor activities amidst the beautification of fall. Visitors can enjoy mildly warm days interspersed with the charming beginnings of autumn's palette, making it a delightful time to explore Kastamonu’s natural beauty.
As summer gracefully yields to autumn, September in Kastamonu, Turkey, offers a delightful 12 hours of daylight. This month reflects a gentle decline from the sun-soaked days of June, which boasts the year's peak with 15 hours of light. Following a vibrant summer, daylight gradually tapers, dropping to 14 hours in July and 13 hours in August. By the time September arrives, the landscape begins to transform, inviting a cozy ambiance as daylight continues to recede toward the 11 hours seen in October. This seasonal shift not only marks a change in daylight but also heralds the onset of autumn's charm, encouraging exploration and appreciation of the rich tapestry of colors that accompany this time of year.
As September unfolds in Kastamonu, Turkey, the winds whisper a gentle tone, with an average speed of 2.2 m/s (5 mph). This moderate breeze signals a slight decline from the summer's vivacious gusts, yet remains consistent with the overall trends of the year. The wind speeds in early autumn mirror those of the previous months, wrapping the landscape in a soft embrace as the warmth of summer gradually gives way to the coolness of autumn. Historically, September's winds align closely with the charming breezes of January, adding a nostalgic touch to the transition into fall. As nature prepares for the coming changes, Kastamonu's September winds create an inviting atmosphere ideal for outdoor adventures and tranquil moments alike.
Weather in Kastamonu varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kastamonu, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures in Kastamonu can vary significantly, with a minimum of 3°C (38°F) and an average of 17°C (63°F), occasionally peaking at 37°C (98°F). The month is relatively dry, receiving only 26 mm (1.0 in) of precipitation over about 6 days, and the humidity sits at a moderate 57%. Conversely, January presents a stark contrast, where the weather becomes much colder, with average temperatures hovering around 0°C (32°F) and a minimum plunging to -17°C (1°F). This winter month sees increased precipitation of 50 mm (2.0 in) spread over about 10 days, coupled with higher humidity levels of 87%. For a more detailed look at winter conditions, check out Kastamonu weather in January.
September and February present stark contrasts in weather. In September, temperatures can range from a mild 17°C (63°F) on average, with highs soaring up to 37°C (98°F), while the minimum dips to a cool 3°C (38°F). The month typically sees 26 mm (1.0 in) of precipitation over about six days, and humidity hovers around 57%. In contrast, February is much colder, with average temperatures around 2°C (36°F), a minimum plunging to -20°C (-4°F), and a maximum of 17°C (62°F). Precipitation is more frequent during this month, accumulating to 56 mm (2.2 in) across 11 days, with higher humidity at 87%. For more insights, check out Kastamonu weather in February.
In comparing the weather between September and March, September typically experiences a wider range of temperatures, with a minimum of 3°C (38°F) and a maximum reaching up to 37°C (98°F), averaging around 17°C (63°F). The month sees relatively low precipitation, with about 26 mm (1.0 in) over just 6 days and a humidity level of 57%. In contrast, March has a much colder profile, with temperatures dropping as low as -10°C (14°F) and an average temperature of only 4°C (40°F). It also features more frequent precipitation, totaling 80 mm (3.2 in) over 14 days, coupled with higher humidity at 85%. For those looking to delve deeper into the specifics of March weather, check out Kastamonu weather in March.
In comparing the weather between September and April, September typically offers much warmer temperatures, with a minimum of 3°C (38°F) and a maximum reaching up to 37°C (98°F). The average temperature hovers around a comfortable 17°C (63°F), accompanied by relatively low precipitation of 26 mm (1.0 in) over about six days. In contrast, April experiences cooler conditions, with temperatures dipping to a minimum of -4°C (26°F) and a maximum of 28°C (82°F), averaging around 9°C (49°F). Additionally, April is marked by higher precipitation levels of 52 mm (2.1 in) spread over 11 days, along with increased humidity at 77%. For more details on April weather, you can refer to Kastamonu weather in April.
When comparing the weather in September to that of May, the temperatures in September tend to be higher overall, with an average of 17°C (63°F) and a maximum that can reach 37°C (98°F). In contrast, May starts cooler with an average temperature of 14°C (58°F) and a maximum of 32°C (91°F), but it also experiences colder minimums, dropping to -1°C (30°F). Precipitation is notably different as well; September sees less rainfall at 26 mm (1.0 in) over about 6 days, while May is wetter, with 73 mm (2.9 in) of rain occurring over 15 days. Additionally, humidity is generally higher in May at 76%, compared to 57% in September. For a detailed look at May weather, you can find more information Kastamonu weather in May.
In comparing the weather between September and June, we see distinct differences that characterize each month. September enjoys a broader temperature range, with a minimum of 3°C and a maximum reaching 37°C, averaging around 17°C. This month experiences significantly lower precipitation at 26 mm over just 6 days and a humidity level of 57%. Meanwhile, June has a more moderate temperature range, from a minimum of 4°C to a maximum of 32°C, averaging 18°C. However, it is much wetter, with 78 mm of precipitation falling over 15 days, and a higher humidity level of 68%. For further details on June weather patterns, you can refer to Kastamonu weather in June.
In comparing the weather of September and July, we see notable differences in temperature and precipitation patterns. September features a broader temperature range, with a minimum of 3°C (38°F) and a maximum of 37°C (98°F), while July has milder minimum temperatures starting at 8°C (47°F) and averages about 21°C (70°F). Both months experience a maximum temperature of 37°C (99°F), but September’s average is slightly lower at 17°C (63°F). In terms of precipitation, September receives 26 mm (1.0 in) of rain over 6 days, which is less than July's 32 mm (1.3 in) over the same number of days. Humidity levels are relatively similar, with September at 57% and July slightly lower at 55%. For further details, you can explore Kastamonu weather in July.
In comparing the weather of September and August, we see a noticeable drop in minimum temperatures, with September starting at 3°C (38°F) compared to August's milder minimum of 9°C (48°F). The average temperature in September also dips to 17°C (63°F), whereas in August, it is a warmer 21°C (69°F). Although both months experience similar levels of precipitation—September recording 26 mm (1.0 in) over 6 days and August slightly less at 25 mm (1.0 in) over 5 days—the humidity in September is higher at 57%, compared to August's 45%. For more detailed information about August weather, you can check Kastamonu weather in August. Overall, September ushers in cooler temperatures and increased humidity, marking a transition towards the fall season.
September and October present contrasting weather patterns. In September, temperatures can range from a mild 3°C (38°F) to a sweltering 37°C (98°F), with an average of 17°C (63°F). The month sees relatively low precipitation at 26 mm (1.0 in) over 6 days and maintains a moderate humidity level of 57%. In stark contrast, October experiences cooler temperatures, with a minimum of -2°C (29°F), an average of 12°C (55°F), and a maximum of 29°C (85°F). Additionally, October brings increased rainfall of 37 mm (1.5 in) over 7 days and higher humidity at 76%. For more detailed information on October weather, you can visit Kastamonu weather in October.
September and November exhibit stark contrasts in weather patterns. In September, temperatures range from a mild 3°C (38°F) at night to a sweltering 37°C (98°F) during the day, accompanied by an average temperature of 17°C (63°F). The month sees relatively low precipitation, with only 26 mm (1.0 in) over about 6 days and a moderate humidity level of 57%. In contrast, November brings much cooler temperatures, with lows dipping to -7°C (19°F) and a pleasant maximum of 21°C (71°F), averaging 6°C (44°F). Precipitation increases to 36 mm (1.4 in) over 7 days, and the humidity rises significantly to 86%. For more detailed insights, you can check out Kastamonu weather in November.
September weather in Kastamonu is characterized by a wide temperature range, with minimums of 3°C (38°F), average highs around 17°C (63°F), and maximums soaring up to 37°C (98°F). This month experiences relatively low precipitation of 26 mm (1.0 in) over about 6 days, along with a moderate humidity level of 57%. In contrast, December brings much colder conditions, with temperatures dropping significantly to a minimum of -13°C (10°F) and an average of just 3°C (38°F). This month sees increased precipitation, totaling 58 mm (2.3 in) across approximately 12 days, and a higher humidity level of 86%. For more detailed insights, you can refer to Kastamonu weather in December.
As summer gently yields to autumn, September in Kastamonu brings a refreshing shift in weather, marked by cooler temperatures and a balanced atmosphere. With an average temperature of 17°C (63°F), this month offers a delightful reprieve from the scorching highs experienced in the summer, which can reach up to a sweltering 37°C (98°F). The dip in humidity, averaging around 57%, combined with more frequent, yet light, rainfall—averaging 26 mm over about six days—helps create an inviting and comfortable environment perfect for outdoor activities. For a more detailed insight into how Kastamonu's climate evolves throughout the year, be sure to check out Kastamonu Climate.