Last updated: August 27, 2025
In September, Novosibirsk experiences a captivating transition into autumn, with temperatures ranging from a maximum of 26°C (80°F) to a chilly minimum of -2°C (28°F). The average temperature settles at a comfortable 10°C (51°F), offering a refreshing respite from the summer heat. This month sees 59 mm (2.3 in) of precipitation over approximately 13 days, contributing to a humidity level of 68% that enriches the air. As nature begins to shift, September in Novosibirsk presents a blend of cool days and vibrant autumn colors, inviting residents and visitors alike to enjoy the beauty of the changing season.
In September, Novosibirsk begins to transition from the warmth of summer to the chill of autumn. Temperatures reflect this shift, with minimums dropping to -2°C (28°F) and average temperatures settling around 10°C (51°F). This month boasts a maximum of 26°C (80°F), allowing for pleasant days before the colder months approach. Compared to the peaks of summer, where temperatures often soar above 30°C (86°F), the weather in September offers a refreshing change, heralding the arrival of fall while still providing a glimpse of lingering warmth. As the month progresses, residents can expect a cooler ambiance, making it a perfect time for outdoor activities while the foliage begins to paint the landscape in vibrant autumn hues.
In September, Novosibirsk experiences a significant uptick in precipitation, with 59 mm (2.3 inches) falling over 13 days. This marks a seasonal shift as summer's warmth gives way to the autumn chill, leading to moisture-laden clouds dominating the skyline. The rainfall in September is notably higher than the preceding months, reflecting a gradual increase in precipitation that peaks with November's 57 mm (2.3 inches) over 15 days. The consistent presence of rainy days not only contributes to the overall annual total but also signals the onset of a wetter period in the region, setting the stage for the cold, dry winters that follow. This trend highlights the importance of September as a transitional month, bridging the dry summer and the more humid autumn.
In September, Novosibirsk experiences a notable shift in humidity, dropping to 68%, a marked contrast to the summer months. This transition reflects the end of the drier season, with July and August displaying the lowest humidity levels at 49% and 53%, respectively. As autumn sets in, the increase in moisture sets the stage for a much wetter October at 83%, leading into the 93% humidity typical of November. This gradual rise from summer dryness to autumn dampness illustrates the city’s seasonal cycle, where the crisp air of early fall is gradually replaced by the heavier, moisture-laden atmosphere characteristic of the approaching winter.
As September arrives in Novosibirsk, the UV Index reflects a moderate level of sun exposure, rated at 5 with a burn time of 30 minutes. This marks a slight decline from the summer months when the Index peaked at 7, associated with higher risks of skin damage. The transition to autumn means a gradual decrease in UV radiation, transitioning into the cooler months ahead, where the Index will drop significantly. Following September, October will see a further reduction to 3, leading into the low levels of 1 in November and December. This trend demonstrates a clear seasonal pattern, reminding residents that while the sun poses potential risks in summer, fall and winter offer much safer conditions for outdoor activities. For more details, visit the Novosibirsk UV Index.
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In the heart of Siberia, September brings a radiant close to summer in Novosibirsk, with 282 hours of sunshine beckoning locals and visitors alike to enjoy the outdoors. This transition month—while showing a decrease from the sun-drenched heights of July and August, which boast over 400 hours—still offers ample light against the backdrop of autumn's arrival. As the days shorten into October with just 213 hours, September stands out as a golden opportunity to soak in the last warm rays before the chill sets in. The gradual ebb of daylight reflects a broader trend: sunny hours peak in the heart of summer and wane toward winter, creating a beautiful but fleeting tapestry of light that the people of Novosibirsk cherish each year.
In September, Novosibirsk experiences a moderate 31% chance of sunny weather, signaling the transition from summer's warmth to autumn's chill. This percentage reflects a notable decline from the peak sunshine chances in July, which boasts a favorable 51%, and a slight drop compared to August's 42%. The month captures a serene balance between lingering warmth and the onset of cooler temperatures, making it an ideal time for outdoor activities despite the gradually decreasing likelihood of sunny days. As autumn sets in, residents and visitors alike can enjoy the vibrant fall foliage, even as the promise of sunshine diminishes heading toward October's 28%.
In Novosibirsk, the transition from summer to autumn in September brings a notable change in daylight, with the city enjoying approximately 12 hours of sunlight. This marks a slight decline from the 14 hours experienced in August, signaling the gradual shift toward shorter days as autumn settles in. The trend is evident as daylight begins to decrease steadily from the sun-drenched months of June and July, where up to 17 hours of light are common. Following the brightness of summer, September serves as a beautiful bridge, providing ample daylight for outdoor activities while hinting at the darker months to come, as daylight dips further to 10 hours in October and continues to wane into winter.
In September in Novosibirsk, the wind begins to pick up slightly, with an average speed of 3.7 m/s (8 mph), transitioning from the calmer breezes of summer. This increase in wind speed reflects a shift in the season, as cooler air starts to roll in. Notably, September’s winds are stronger than those in July and August, which saw their lowest averages at 2.4 m/s (5 mph) and 2.5 m/s (5 mph), respectively. However, September’s winds still remain lighter than those in the coming months, as October and November bring a surge in gusts, moving back above 4 m/s. This subtle uptick in wind speed signals the onset of autumn, marking a transition not only in weather but in the vibrant rhythm of life in Novosibirsk.
Weather in Novosibirsk varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Novosibirsk, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather conditions. In September, temperatures range from a chilly -2°C (28°F) at night to a warm 26°C (80°F) during the day, with an average temperature of 10°C (51°F). The month sees a moderate amount of precipitation, totaling 59 mm (2.3 in) over 13 days, accompanied by a humidity level of 68%.
In contrast, January plunges into the depths of winter, with temperatures dipping drastically to a minimum of -40°C (-39°F) and only reaching a maximum of 3°C (37°F). The average temperature for January hovers around -16°C (3°F), and while it experiences less precipitation than September with just 31 mm (1.2 in) over 10 days, the humidity rises significantly to 96%. This dramatic shift underscores the extreme differences between the two months. For more details, you can check Novosibirsk weather in January.
September and February in Novosibirsk exhibit vastly different weather patterns. September enjoys a more temperate climate with average temperatures around 10°C (51°F), peaking at a pleasant 26°C (80°F), while February experiences frigid cold, with average temperatures plummeting to -14°C (8°F) and even reaching lows of -40°C (-40°F). Precipitation is more frequent in September, occurring on 13 days with a total of 59 mm (2.3 in), compared to February’s lighter 27 mm (1.1 in) over just 8 days. Additionally, the humidity is notably higher in February at 97%, compared to September's 68%. For a deeper look at February weather in Novosibirsk, check out Novosibirsk weather in February.
When comparing the weather in September and March, there's a stark contrast in temperatures and conditions. September experiences a mild climate, with average temperatures around 10°C (51°F) and highs reaching up to 26°C (80°F), while March is significantly colder, with an average temperature of -6°C (22°F) and maximums only reaching 7°C (45°F). Precipitation also varies, with September receiving 59 mm (2.3 in) over 13 days and March seeing less rain at 30 mm (1.2 in) over just 8 days. Additionally, March is characterized by much higher humidity, at 96%, compared to September's 68%. For a more detailed look at March weather, you can check Novosibirsk weather in March.
In comparison to September, April experiences significantly colder temperatures, with minimums dropping to -16°C (4°F) and an average of only 4°C (40°F), while September boasts a milder average of 10°C (51°F) and maximums reaching 26°C (80°F). Although September has more rainfall, at 59 mm (2.3 in) over 13 days, April sees considerably less precipitation, totaling just 24 mm (0.9 in) across 7 days. Humidity levels are higher in April at 91%, compared to 68% in September. For more details on the weather patterns in April, you can visit Novosibirsk weather in April.
When comparing the weather in September and May, it’s evident that both months showcase a range of temperatures, but May tends to be warmer overall. September has a minimum temperature of -2°C (28°F) and averages 10°C (51°F), peaking at 26°C (80°F), with a total precipitation of 59 mm (2.3 in) over 13 days and a humidity level of 68%. In contrast, May experiences slightly cooler minimum temperatures at -6°C (22°F) but a higher average of 12°C (54°F) and can reach a maximum of 31°C (89°F). May's precipitation is lesser at 45 mm (1.8 in) over 10 days, maintaining a similar humidity level of 67%. For a more comprehensive overview of May’s weather, you can check Novosibirsk weather in May.
September weather in Novosibirsk presents a cooler climate compared to June, with average temperatures ranging from a minimum of -2°C (28°F) to a maximum of 26°C (80°F), while June boasts milder conditions, with daytime highs reaching up to 32°C (91°F). Although both months experience similar levels of precipitation—59 mm in September and 58 mm in June—September's rainfall is spread over 13 days, slightly more frequent than the 11 days in June. Additionally, the humidity in September is notably higher at 68%, contributing to a more damp atmosphere, whereas June sees a more comfortable humidity level of 51%. For more detailed information, you can check Novosibirsk weather in June.
When comparing the weather in September to July, notable differences emerge. September presents a cooler climate with average temperatures around 10°C (51°F) and a maximum of 26°C (80°F), while July is much warmer, boasting an average of 19°C (66°F) and peaks reaching 32°C (90°F). Additionally, September experiences higher humidity at 68%, contributing to a more brisk sensation despite its warmest days. In terms of precipitation, September receives 59 mm (2.3 in) over 13 days, compared to July’s 64 mm (2.5 in) over just 11 days. For a more detailed look at July conditions, check Novosibirsk weather in July.
September's weather in Novosibirsk shows a marked cooling compared to August. With minimum temperatures dropping to -2°C (28°F) and average temperatures around 10°C (51°F), it is significantly cooler than August's minimum of 5°C (42°F) and average of 18°C (64°F). The maximum temperature in September peaks at 26°C (80°F), whereas August experiences a much warmer max of 31°C (88°F). Additionally, September has more precipitation, totaling 59 mm (2.3 in) over 13 days, compared to August's 44 mm (1.7 in) over 10 days, and the humidity rises from 53% in August to 68% in September. For more details, you can check Novosibirsk weather in August.
September weather in Novosibirsk features milder temperatures, with daily averages reaching around 10°C (51°F) and a maximum of 26°C (80°F). The month experiences about 59 mm (2.3 in) of precipitation over 13 days, with humidity levels at 68%. In contrast, October brings a noticeable drop in temperatures, with minimums plunging to -13°C (10°F) and an average temperature of just 4°C (39°F). While precipitation decreases to 46 mm (1.8 in) over 11 days, the humidity rises to 83%, contributing to a chillier and more damp atmosphere. For more details about the weather during this month, check Novosibirsk weather in October.
September weather offers a more temperate experience, with average temperatures around 10°C (51°F) and highs peaking at 26°C (80°F). This month sees relatively low precipitation, totaling 59 mm (2.3 in) over 13 days, and a moderate humidity level of 68%. In contrast, November ushers in much colder conditions, featuring an average temperature of -7°C (20°F) and frigid lows dipping as low as -30°C (-22°F). Despite a slightly lower total precipitation of 57 mm (2.3 in) spread over more days—15 in total—humidity rises significantly to 93%. For a more detailed overview of November's weather, visit Novosibirsk weather in November.
September and December showcase starkly contrasting weather patterns. In September, temperatures range from a mild minimum of -2°C (28°F) to a warm maximum of 26°C (80°F), with an average of 10°C (51°F). The humidity is moderate at 68%, and the month experiences 59 mm (2.3 in) of precipitation over 13 days. In contrast, December plunges into the depths of winter, with a chilling temperature range from a frigid -42°C (-44°F) to a maximum of just 2°C (35°F), averaging -13°C (8°F). The humidity skyrockets to 97%, and while precipitation decreases to 46 mm (1.8 in), it still falls across 11 days. For more detailed information about December weather, visit Novosibirsk weather in December.
As summer transitions to autumn in Novosibirsk, September brings a noticeable change in weather, marked by cooler temperatures and increased precipitation. The warmth of late summer gives way to crisp air, with average highs dipping and nights growing chilly, often dropping near freezing. This month experiences a rise in rainfall, contributing to the lushness of the landscape as the city prepares for the colder months ahead. With humidity levels hovering around 68%, the air feels refreshingly brisk. For those interested in understanding more about how the beauty of Septembers here compares to other months, explore additional details at Novosibirsk Climate.