Last updated: August 27, 2025
September in Moscow offers a fascinating transition into autumn, characterized by temperate fluctuations and variable weather conditions. With maximum temperatures reaching 30°C (85°F) and an average of 12°C (55°F), the month can still feel quite warm, although mornings can start cool, dipping as low as 0°C (32°F). Rainfall is moderate, with 54 mm (2.1 in) of precipitation spread over 9 days, and relative humidity remains high at 86%, lending a crispness to the air. This blend of warmth and moisture creates a unique atmospheric charm, making September an engaging time to experience the changing seasons in the Russian capital.
As summer transitions into autumn, Moscow experiences a notable shift in temperatures throughout September. The month begins with a gentle warmth, presenting average temperatures of around 12°C (55°F), while daytime highs can soar to a comfortable 30°C (85°F). However, as the warm days slowly fade, night temperatures drop significantly, reaching a brisk minimum of 0°C (32°F). This drop marks the end of the warm season, setting the stage for the cooler months ahead. Overall, September reflects a delightful balance between the lingering warmth of summer and the impending chill of autumn, making it a captivating time to experience the evolving climate of the Russian capital.
September in Moscow marks a transitional period as summer fades and autumn approaches, characterized by 54 mm (2.1 in) of precipitation over 9 days. This marks a slight decrease from August's 60 mm, indicating a trend toward less rainfall as the year progresses. Despite the reduction in rain, September still experiences a significant number of wet days, which contributes to the refreshing autumn ambience. The precipitation levels remain relatively steady in comparison to August, reinforcing the idea that while temperatures begin to drop, the moisture in the air lingers, paving the way for the crisp weather of October. This month serves as a reminder of Moscow's dynamic climate, where the balance of rain and seasonal change define the city's character.
In September, Moscow experiences a noticeable shift in humidity, with levels rising to 86%, a significant increase from the more moderate conditions of the summer months. This trend marks the beginning of a gradual ascent leading into the autumn season, as humidity begins to climb after the relatively dry spell of May through August, where levels ranged between 75% and 79%. As the air grows cooler and the leaves start to change, September's humidity acts as a precursor to the higher levels observed in the following months, peaking again in October at 91%. This cycle underscores Moscow's distinct seasonal transitions, with September serving as a bridge between the warmth of summer and the chill of winter.
As September unfolds in Moscow, the UV Index reflects a shift towards diminishing summer intensity, settling at a moderate level of 5. This marks a gradual decline from the peak summer months, where indices reached 7, suggesting that while the sun's rays are still strong enough to warrant attention, the overall risk of harm from unprotected exposure decreases. With a burn time of approximately 30 minutes, it's essential to remain vigilant about sun safety during outdoor activities. As we transition into autumn, Moscow's UV Index continues to trend downward, anticipating a return to lower levels by October. Stay informed and prepared for changing conditions by visiting Moscow UV Index.
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September in Moscow, Russian Federation, heralds a delightful transition as the city basks in an impressive 282 hours of sunshine. While the summer months shine brightest, with July peaking at 416 hours, September sees a gentle decline, yet it remains notably luminous compared to the winter months, which plunge to a mere 50 hours in December. This vibrant month offers a beautiful balance, following August's 393 hours, as the golden hues of autumn begin to paint the landscape. Despite the approaching chill of October, with its reduced 190 hours, September serves as a dazzling reminder that Moscow can still enjoy substantial sunshine as the seasons shift.
In September, Moscow experiences a notable dip in the likelihood of sunny weather, with only a 19% chance of sunshine gracing the city. This decline follows a summer peak, where June and July enjoy 62% and 60% sunny days, respectively. As autumn approaches, the transition becomes evident, with August already witnessing a significant drop to 38%. This trend suggests that while early fall can still yield pleasant days, Moscow’s skies are increasingly cloaked in clouds, paving the way for the chillier months ahead. Ultimately, September serves as a gentle reminder of summer's fleeting nature, inviting locals and visitors to embrace the remaining days of warmth before winter sets in.
As September arrives in Moscow, the city experiences a gradual shift from the long, sunlit days of summer toward the shorter, cozier days of autumn. With 12 hours of daylight, September marks a balance between the vibrant brightness of summer, which peaked at 17 hours in June, and the impending winter months that will see daylight dwindle to just 7 hours by December. This period signifies a transitional phase, as daylight begins its steady decline from the earlier months of 16 hours in May and 14 hours in August, inviting residents to savor the crisp air and rich hues of fall. As daylight lingers slightly longer than the upcoming October's 10 hours, September serves as a perfect time for outdoor activities and enjoying the last warm days before winter sets in.
As autumn descends upon Moscow, September brings a noticeable shift in the wind, with average speeds reaching 4.0 m/s (9 mph). This increase signifies a transition from the calm summer months, where wind speeds hovered around 2.4 to 2.8 m/s. The breezy September air is a precursor to the more robust gusts of November, which peaks at 4.7 m/s (11 mph), suggesting that as the seasons change, so too does the vigor of the winds. This trend highlights the dynamic nature of Moscow's weather, as the gentle summer zephyrs give way to more invigorating breezes, urging residents to embrace the crispness of fall.
Weather in Moscow varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Moscow, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather. In September, temperatures range from a chilly 0°C (32°F) at night to a warm 30°C (85°F) during the day, with an average of 12°C (55°F). The month experiences about 54 mm (2.1 in) of precipitation over approximately 9 days, accompanied by relatively high humidity at 86%. In contrast, January is characterized by much harsher conditions, with temperatures plummeting to a minimum of -30°C (-22°F) and only reaching a maximum of 5°C (41°F), averaging -6°C (22°F). Precipitation drops slightly to 41 mm (1.6 in) but occurs more frequently, with about 12 days of rain or snow, and humidity rises to a significant 97%. For more detailed information, check out Moscow weather in January.
September and February weather present a stark contrast in temperature and conditions. September enjoys a milder climate, with temperatures ranging from a chilly 0°C (32°F) to a warm 30°C (85°F) and an average of 12°C (55°F). In contrast, February brims with the bite of winter, where temperatures can plummet from -26°C (-14°F) to a high of only 8°C (47°F), averaging around -5°C (23°F). While September sees about 54 mm of precipitation over 9 days, February experiences slightly less rainfall at 46 mm across 11 days, accompanied by a higher humidity of 95%. For those curious about the winter chill, more details can be found here: Moscow weather in February.
September and March present striking contrasts in weather conditions. In September, temperatures range from a chilly 0°C (32°F) to a warm 30°C (85°F), with an average of 12°C (55°F) and a relatively high humidity of 86%. There is also significant precipitation, with 54 mm (2.1 in) falling over about 9 days. In contrast, March experiences much harsher conditions, with temperatures dipping as low as -25°C (-12°F) and averaging around -1°C (31°F). Although precipitation is slightly lower at 37 mm (1.5 in) across 10 days, the humidity remains somewhat high at 92%. For more details, check out Moscow weather in March.
In September, temperatures range from a chilly 0°C (32°F) at night to a warm 30°C (85°F) during the day, with an average of 12°C (55°F), while April sees cooler conditions, starting at a minimum of -8°C (18°F) and peaking at 24°C (76°F), averaging 6°C (43°F). Both months experience similar precipitation levels, with September accumulating 54 mm (2.1 in) over 9 days and April slightly less at 52 mm (2.1 in) across 11 days. Humidity remains relatively high in both months, at 86% in September and 83% in April, contributing to a moist atmosphere. For a deeper dive into the specifics of April weather, you can refer to Moscow weather in April.
When comparing the weather in September and May, both months showcase similar temperature highs, reaching around 30°C (85°F-87°F). However, September tends to have a higher average temperature of 12°C (55°F) compared to May's slightly lower average of 13°C (55°F). In terms of precipitation, May receives more rainfall at 72 mm (2.8 in) over 12 days, while September has less, with 54 mm (2.1 in) occurring over 9 days. Additionally, September's humidity is noticeably higher at 86%, in contrast to May's lower humidity level of 75%. For more detailed information, you can check the Moscow weather in May.
In September, temperatures in Moscow range from a chilly minimum of 0°C (32°F) to a comfortable maximum of 30°C (85°F), with an average temperature of around 12°C (55°F). The month experiences an average of 54 mm (2.1 in) of precipitation over approximately 9 days, contributing to a high humidity level of 86%. In contrast, June brings warmer conditions, with temperatures varying from a minimum of 3°C (38°F) to a peak of 33°C (92°F) and an average temperature of 17°C (64°F). However, June also sees slightly more rain, with 73 mm (2.9 in) of precipitation spread across 11 days while maintaining a lower humidity of 76%. For a detailed look at June weather in Moscow, visit Moscow weather in June.
In comparing the weather of September and July, it is evident that July is generally warmer and wetter. July boasts average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 33°C (91°F), compared to September’s more moderate range of 0°C (32°F) to 30°C (85°F). Additionally, July experiences more substantial rainfall with about 83 mm (3.3 in) over 14 days, while September has about 54 mm (2.1 in) over just 9 days. Humidity levels are slightly lower in July at 79%, whereas September sees higher humidity at 86%. For more details on July's weather, you can visit Moscow weather in July.
In comparing the weather of September and August, September experiences a broader temperature range with minimums dropping to 0°C (32°F) and average temperatures around 12°C (55°F), while maximums reach up to 30°C (85°F). In contrast, August presents milder conditions, with minimum temperatures at 5°C (41°F), an average of 18°C (64°F), and maximums peaking at 31°C (88°F). Precipitation is slightly lower in September at 54 mm (2.1 in) over 9 days, compared to August's 60 mm (2.4 in) across 11 days. Additionally, September's humidity is higher at 86%, unlike August's 78%. For more insights on August weather patterns, check Moscow weather in August.
September marks a transitional period as temperatures can reach up to 30°C (85°F), with an average of 12°C (55°F), while October sees a noticeable drop, with highs of just 20°C (69°F) and an average of 7°C (45°F). Precipitation is slightly lower in September at 54 mm (2.1 in) over 9 days, contrasting with October, which experiences 50 mm (2.0 in) across 12 days, leading to wetter conditions. Humidity also rises from 86% in September to 91% in October, further indicating the shift towards cooler, more autumnal weather. For more detailed insights, you can check Moscow weather in October.
September's weather features a more moderate temperature range, with minimums of 0°C (32°F) and maximums reaching 30°C (85°F), making it a relatively warm month with an average temperature of 12°C (55°F). Although there are 9 days of precipitation totaling 54 mm (2.1 in), the humidity is lower at 86%, allowing for some comfortable days outdoors. In contrast, November brings a stark shift as temperatures drop significantly, with minimums reaching -14°C (7°F) and an average temperature of just 1°C (34°F). While it receives slightly less precipitation at 40 mm (1.6 in) over 10 days, the humidity rises to 95%, contributing to a chilly, damp atmosphere. For more insights on November weather, check out Moscow weather in November.
September and December present stark contrasts in weather conditions. In September, temperatures range from a minimum of 0°C (32°F) to a pleasant maximum of 30°C (85°F), with an average of 12°C (55°F). The month typically experiences 54 mm (2.1 in) of precipitation over about 9 days, accompanied by a relatively high humidity of 86%. In contrast, December plunges into winter, with temperatures dropping significantly to a minimum of -23°C (-10°F) and an average of -4°C (26°F), peaking at only 7°C (46°F). Precipitation levels increase slightly to 58 mm (2.3 in) over 14 days, with humidity rising to 94%, creating a much chillier and damp environment. For more detailed information about winter conditions, check out Moscow weather in December.
As summer transitions into autumn, September in Moscow offers a unique blend of warmth and crispness. With temperatures gradually cooling from the peak summer heat, the month showcases a remarkable average of 12°C, drawing a striking contrast to the sweltering highs of July and August. Although the days start to shorten, the occasional warm spell can still reach up to 30°C, making it a delightful time for outdoor activities before the chill of winter sets in. However, September also brings increased humidity and a fair amount of rainfall, with about 54 mm falling over the course of nine days, hinting at the impending change in seasons. To learn more about the city's climate trends and what to expect as the year progresses, check out Moscow Climate.