Last updated: August 31, 2025
September in Nis, Serbia offers a delightful blend of late summer warmth and the onset of autumn coolness. With maximum temperatures soaring to 34°C (94°F) and an average of 18°C (64°F), visitors can still enjoy plenty of sunshine. However, it’s not without its occasional rain, as the month sees about 24 mm (0.9 in) of precipitation over 5 days, contributing to a comfortable 59% humidity. Whether you're exploring the historic sites or enjoying local cuisine, Nis in September provides a pleasant backdrop for memorable experiences.
As September unfolds in Niš, Serbia, the temperature begins to transition from the summer heat into the beckoning coolness of autumn. The month greets residents and visitors alike with a chilly minimum of -1°C (30°F), while daytime brings a comfortable average of 18°C (64°F), allowing for enjoyable outdoor activities. The warmest days can reach up to 34°C (94°F), reflecting the lingering summer vibes before the cooler months set in. This unique shift illustrates the fading intensity of summer, offering a delightful blend of warmth and the crisp air that heralds the approach of October. With such a range, September in Niš is a sweet spot for experiencing the best of both seasons.
In September, Nis, Serbia experiences a notable decrease in precipitation, with only 24 mm (0.9 in) of rain recorded over five days. This marks a shift from the more humid summer months, where rainfall peaks in June and July with around 65-69 mm. As summer fades, September serves as a transitional month, ushering in drier conditions and an average rainfall that is significantly lower than the preceding months. This trend of diminishing precipitation continues into October, where amounts begin to rise again, hinting at the wetter autumn ahead. Overall, September's mild and drier weather provides a pleasant backdrop for outdoor activities, making it a lovely time to experience the beauty of Nis before the rains return.
In September, Nis experiences a noticeable shift in humidity as it transitions from the drier summer months. With humidity levels at 59%, the air becomes a bit more saturated compared to the preceding month, where August saw a low of 45%. This uptick signifies the onset of autumn, leading to a comfortable balance between humidity and crisp air. Interestingly, it marks a subtle rise that foreshadows the increase seen in October, when levels jump to 79%. As the year progresses, the humidity trends upward once again, echoing the patterns of earlier months, which typically hover around the high 80s and 90s during winter. This progression suggests that while September provides a brief reprieve from high humidity, it’s merely a prelude to the wetter months ahead.
As summer transitions to autumn in Nis, Serbia, September brings a UV Index of 7, categorizing the exposure as high. This signals a notable shift from the intense very high levels experienced during the peak of summer months, where burn times were a mere 15 minutes. Now, with a burn time of 25 minutes, it's essential to remain vigilant when outdoors, especially during midday hours. The decreasing UV levels hint at the changing seasons, yet they still demand sun protection to prevent skin damage. By October, the UV Index softens further to 5, indicating a more moderate sun exposure. For more detailed information, visit Nis UV Index.
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September in Nis, Serbia, offers a delightful transition as summer gracefully yields to autumn. With 339 hours of sunshine, it retains a warm glow reminiscent of the previous months while heralding the cooler days ahead. The light diminishes from the peak of 417 hours in July, yet it still shines brighter than the earlier months, maintaining a vibrant atmosphere for outdoor exploration. As the days grow shorter, this month showcases a balance of warmth and comfort, inviting locals and visitors to embrace the lingering sunshine before the rhythm of autumn takes full swing. The steady decline in sunlight hours reminds us of the cyclical nature of the seasons, where every month offers its own unique charm in this picturesque Serbian city.
As September rolls in, the likelihood of sunny weather in Nis, Serbia, stands at 54%, providing a pleasant transition from the summer heat. This month retains some of the warmth and brightness experienced during the peak of summer, where August boasts a 75% chance of sunshine. Following the sunniest months, September’s sun probability dips but remains robust compared to earlier months like January (23%) or April (42%). With an increasing trend of clear skies leading into fall, visitors can expect more pleasantly sunny days, making it an ideal time to explore the beautiful landscapes and vibrant local culture of Nis.
As summer transitions into autumn in Nis, Serbia, September marks a gentle decline in daylight, offering around 12 hours of sunlight each day. This shift reflects a gradual trend from the long, sun-drenched days of June and July, which boast the year’s highest daylight at 15 hours. The month of September serves as a beautiful bridge, blending the lingering warmth of summer with the cool embrace of fall. Following this, daylight continues to taper off, dropping to 10 hours by October, and settling into the shorter days of winter. Such variations not only enhance the natural beauty of the region but also invite a seasonal appreciation for the changing light.
As September ushers in the early whispers of autumn in Nis, Serbia, the average wind speed settles at a gentle 1.8 m/s (4 mph). This slight decrease from summer's calm, where it hovered around 1.7 m/s (4 mph) in July and August, suggests a transition in the air, signaling the approach of cooler months. Interestingly, while the winds may soften at the heart of September, they begin to pick up strength again in October, rising to 2.0 m/s (4 mph). This pattern reveals a subtle rhythm in Nis's climate; the winds are both a harbinger of seasonal change and a reminder of the dynamic weather that characterizes this charming region. Overall, September's gentle breezes offer a perfect backdrop for leisurely strolls, allowing residents and visitors alike to savor the last warm days before winter settles in.
Weather in Nis varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Nis, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present two distinctly different climatic experiences. In September, temperatures range from a minimum of -1°C (30°F) to a maximum of 34°C (94°F), with an average of 18°C (64°F). The month sees relatively low precipitation at 24 mm (0.9 in) over just five days and a moderate humidity of 59%. In stark contrast, January is considerably colder, with temperatures dipping as low as -22°C (-7°F) and averaging -1°C (31°F), reaching a maximum of only 14°C (57°F). This winter month experiences higher precipitation at 60 mm (2.4 in) spread across ten days, along with much higher humidity at 91%. For more detailed insights, check out Nis weather in January.
In September, the weather is generally warmer, with average temperatures reaching 18°C (64°F) and a maximum of 34°C (94°F), while February sees much cooler conditions, with an average temperature of just 4°C (39°F) and a maximum of 19°C (67°F). Precipitation is lower in September, totaling 24 mm (0.9 in) over 5 days, compared to February's 47 mm (1.8 in) spread over 8 days, indicating a wetter month. Additionally, February experiences significantly higher humidity at 87%, compared to September's 59%, making for a more clammy and overcast atmosphere. For more detailed weather insights, visit Nis weather in February.
September and March present quite contrasting weather conditions. In September, temperatures range from a chilly minimum of -1°C (30°F) to a warm maximum of 34°C (94°F), with an average of 18°C (64°F). The month experiences relatively low precipitation at 24 mm (0.9 in) over just 5 days, accompanied by a moderate humidity level of 59%. In stark contrast, March sees considerably colder temperatures, with a minimum of -19°C (-3°F) and an average of only 6°C (44°F), peaking at a milder 25°C (78°F). Precipitation is higher in March, reaching 68 mm (2.7 in) over 12 days, and humidity is significantly elevated at 84%. For more specific insights, you can check Nis weather in March.
September and April present distinct contrasts in weather patterns. In September, temperatures range from a cool minimum of -1°C (30°F) to a warm average of 18°C (64°F), peaking at a maximum of 34°C (94°F). The month sees relatively low precipitation, totaling 24 mm (0.9 in) over about 5 days, with a humidity level of 59%. In contrast, April experiences cooler overall temperatures, with a minimum of -3°C (27°F) and an average of 11°C (53°F), reaching up to 28°C (82°F). This month is wetter, receiving 44 mm (1.7 in) of rainfall across approximately 8 days, coupled with higher humidity at 75%. For a more detailed exploration of April weather, check out Nis weather in April.
September generally offers warmer temperatures compared to May, with averages reaching 18°C (64°F) against May's average of 16°C (61°F). While both months have a range of warm days, September can experience maximum temperatures peaking at 34°C (94°F), significantly hotter than May's maximum of 32°C (90°F). However, May tends to be wetter, with 61 mm (2.4 in) of precipitation over 13 days, compared to September's lighter rainfall of 24 mm (0.9 in) over just 5 days. The humidity is also higher in May at 71%, compared to 59% in September. For more detailed insights on May's weather, you can visit Nis weather in May.
In comparing the weather between September and June, September generally experiences a wider temperature range, with minimums dropping to -1°C (30°F) and maximums reaching up to 34°C (94°F). In contrast, June is warmer overall, with minimum temperatures around 6°C (42°F) and maximums hitting 37°C (98°F). Precipitation levels are notably higher in June, with 69 mm (2.7 in) over 13 days compared to September's 24 mm (0.9 in) over just 5 days. Despite this, both months have similar humidity levels, hovering around 59%-60%. For more detailed insights about the weather in June, you can visit Nis weather in June.
September and July present contrasting weather patterns. In September, temperatures range from a chilly minimum of -1°C (30°F) to a maximum of 34°C (94°F), with an average of 18°C (64°F). The month sees lower precipitation, totaling 24 mm (0.9 in) over 5 days, and a moderate humidity level of 59%. In comparison, July features warmer temperatures with a minimum of 10°C (50°F) and can peak at 37°C (100°F), averaging around 22°C (72°F). This month experiences significantly higher rainfall, accumulating 65 mm (2.6 in) over 11 days, while maintaining a slightly lower humidity of 56%. For a more detailed look at July weather, check Nis weather in July.
In comparing the weather of September to that of August, we see a noticeable shift in temperatures and humidity levels. September offers a lower minimum temperature of -1°C (30°F) and an average of 18°C (64°F), while August maintains a milder minimum of 9°C (48°F) with an average of 23°C (73°F). Additionally, September's maximum temperature peaks at 34°C (94°F), which is slightly less than August's maximum of 38°C (101°F). Precipitation sees a minor decrease in September at 24 mm (0.9 in) compared to August's 30 mm (1.2 in), with both months experiencing rain on five days. It's worth noting that September has a higher humidity level of 59%, contrasted with August's more comfortable 45%. For more detailed weather insights, you can check Nis weather in August.
September typically experiences warmer temperatures, with averages around 18°C (64°F) and highs that can reach up to 34°C (94°F). The month sees moderate rainfall of about 24 mm (0.9 in) spread over five days, while humidity levels average at 59%. In contrast, October brings cooler conditions, with average temperatures dropping to 12°C (54°F) and maximums peaking at 28°C (83°F). Precipitation increases significantly to 52 mm (2.1 in) over six days, and humidity rises to 79%, creating a more damp environment. For more details on the weather in October, visit Nis weather in October.
September typically boasts a much warmer climate compared to November, with average temperatures around 18°C (64°F) and a maximum reaching up to 34°C (94°F). In contrast, November brings cooler weather with average temperatures dropping to 7°C (46°F) and a maximum of only 24°C (76°F). Additionally, November experiences higher humidity at 88%, compared to September's 59%, making it feel colder. Precipitation also increases slightly, with November seeing 36 mm (1.4 in) over six days, compared to September's 24 mm (0.9 in) over five days. For more specific details on November weather in Nis, check out Nis weather in November.
September and December present markedly different weather conditions. In September, temperatures range from a minimum of -1°C (30°F) to a warm average of 18°C (64°F), peaking at a high of 34°C (94°F). The month sees relatively low precipitation at 24 mm (0.9 in) over just 5 days and a humidity level of 59%. In contrast, December experiences significantly colder temperatures with a minimum of -12°C (11°F), an average of 3°C (37°F), and a maximum of 15°C (59°F). This month also has considerably higher precipitation, totaling 84 mm (3.3 in) spread over 15 days, along with increased humidity at 91%. For a detailed look at the weather conditions, you can explore the information here: Nis weather in December.
As September unfolds in Nis, it offers a delightful transition from the sweltering summer heat to more temperate conditions. With average temperatures hovering around 18°C (64°F), the month feels pleasantly mild compared to the scorching highs experienced in July and August. While warmer days can still reach up to 34°C (94°F), morning and evening temperatures drop, allowing for refreshing changes. Rainy days make a subtle appearance, with 24 mm of precipitation spread across just five days, adding a welcome touch of moisture to the air, which averages 59% humidity. This blend of warmth and mildness positions September as a charming month, offering a perfect balance before the cooler autumn months set in. For more insights on the weather patterns, explore Nis Climate.