September Weather in Kronstadt, Russian Federation

Last updated: August 27, 2025

In September, Kronstadt experiences a delightful mix of autumn's onset, with maximum temperatures reaching 22°C (71°F) and an average of 13°C (56°F). The air turns crisper, often dipping to a minimum of 5°C (42°F). Visitors can expect 15 days of rain, accumulating 103 mm (4.0 in) of precipitation, contributing to a lush, vibrant landscape. With humidity levels soaring at 90%, the maritime climate wraps the city in a refreshing, though damp, embrace, making it an inviting destination for those seeking the charm of early fall in Russia.

September Temperature in Kronstadt

As summer gracefully gives way to autumn in Kronstadt, September marks a transitional period characterized by mild temperatures. With average highs reaching around 22°C (71°F) and lows settling at 5°C (42°F), the month offers a comfortable climate for outdoor activities, contrasting sharply with the bitter cold of winter months. The overall average temperature of 13°C (56°F) suggests a welcoming warmth that invites residents and visitors alike to enjoy the stunning foliage as the leaves begin to change. This pleasant shift not only beckons nature enthusiasts but also sets the stage for cozy autumn days ahead, making September a delightful time to experience the unique charm of this coastal city.

September Weather in Kronstadt: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Kronstadt, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kronstadt, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec262529374961656355453729
Data source: Temperature data for Kronstadt generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Kronstadt

In September, Kronstadt experiences a notable shift in precipitation, with an average of 103 mm (4.0 in) falling over 15 days, marking a significant amount compared to the summer months. This increase is part of a broader trend observed as the region transitions from the wetter peak of August, which averages 139 mm (5.5 in), to the even wetter October. The increased rainfall in September signals the onset of autumn, as the city prepares for the cooler and rainier months ahead. Notably, this month's precipitation levels are among the highest for the year, reflecting a gradual uptick in daily rainfall that continues into October, where both the frequency and intensity of rain tend to rise.

September Precipitation Trends in Kronstadt

The chart displays monthly precipitation patterns in Kronstadt, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Kronstadt, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec455655474955871391031127579
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kronstadt

In September, Kronstadt experiences a notable shift in humidity, measuring 90%, which marks a slight increase from the 86% observed in August. This uptick signals the transition from the warmer summer months to the cooler autumn season, where humidity levels typically rise again. The data reveals a general trend of higher humidity in the early months of the year, peaking at an impressive 97% in January, before gradually declining to a low of 71% in May. As autumn approaches, humidity levels begin to stabilize, hovering around 90% in September, reminiscent of the wetter months preceding the winter. This cyclical pattern highlights Kronstadt's consistent dampness throughout the year, shaping its unique climate.

September Average Humidity in Kronstadt

This chart illustrates the average monthly humidity levels in Kronstadt, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Kronstadt is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%94%90%86%71%77%82%86%90%93%93%94%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kronstadt

In September, Kronstadt experiences a moderate UV Index of 4, indicating a slight decline from the summer highs of July and August, which both peaked at 7. This trend reflects the transition from the sun-drenched days of summer to the cooler embrace of fall. With a recommended burn time of 30 minutes, it's essential to remain mindful of sun exposure during this month. As the year progresses, the UV Index will continue to taper off, reaching lower levels by October. For ongoing awareness, you can track the UV trends and stay protected by visiting Kronstadt UV Index.

Maximum UV Index Levels in Kronstadt for September

The chart shows the monthly maximum UV Index (UVI) for Kronstadt in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Kronstadt typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457754211
Data source: Kronstadt September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Kronstadt

September in Kronstadt, Russian Federation, greets visitors with 283 hours of sunshine, a notable shift as the warmth of summer begins to fade. This month stands in contrast to the peak brightness of June, which boasts the highest sunlight at 473 hours, and the gradual decline starts with August's 390 hours. The sunlight in September reflects a comforting transition, allowing for an inviting atmosphere without the sweltering heat, as daylight hours remain significantly higher than in the chilling months of October and November. Overall, the data showcases a clear trend of increasing sunlit days from winter’s depths in January to the lush summer months, before dipping once more towards winter's return.

Monthly Sunshine Duration in Kronstadt: September Highlighted

The September sunshine duration represents the total number of hours Kronstadt experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec45h120h257h347h433h473h462h390h283h193h100h38h
Data source: Kronstadt September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kronstadt During September

As September rolls in, Kronstadt, Russian Federation experiences a notable shift in weather patterns. While the summer months of June and July boast a healthy 58% chance of sunshine, this likelihood begins to dwindle significantly as the seasons transition. By September, the chance of sunny days drops to 22%, reflecting the encroaching autumn chill. This trend highlights the fleeting nature of warm, sunny days in the region, as the bright summer skies give way to the overcast hues of fall. As such, those looking to enjoy the last rays of sun should seize the opportunity early in the month, before the sun retreats further into the clouds.

Percentage of Sunny Days in September in Kronstadt

The chart illustrates the percentage of sunny days in Kronstadt throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Kronstadt experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec4%11%34%43%32%57%58%28%22%32%14%2%
Data source: Kronstadt September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kronstadt in September

As September strolls into Kronstadt, the days gradually begin to shorten, transitioning from the long, sun-drenched hours of summer. After basking in up to 18 hours of daylight in June, the daylight duration dips to 12 hours by September, marking a noticeable shift. This month serves as a gentle reminder of the approaching autumn, as sunlight wanes before yielding to the deeper shadows of October, which provides only 10 hours. The trend clearly showcases the rhythmic ebb and flow of daylight, linking the vibrant energy of summer with the quieter, introspective tones of fall. As the golden autumn hues emerge, the community embraces the beauty of shorter days, celebrating the balance between light and dark.

Average Daylight Hours in Kronstadt for September

The chart illustrates the variation in daylight duration in Kronstadt throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec6h 48m9h 8m11h 51m14h 37m17h 11m18h 41m17h 53m15h 30m12h 47m10h 3m7h 29m6h
Data source: Kronstadt daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Kronstadt

As summer gently fades into autumn, September in Kronstadt reveals a notable shift in the wind, with average wind speeds reaching 6.0 m/s (13 mph), matching the breezy intensity of August. This sustained wind speed suggests a transition as the warmer months make way for the crisp, cooler air of fall. Interestingly, as the year progresses, a gradual increase in windiness is observed, peaking in October with 6.8 m/s (15 mph), and continuing to rise into November. The rhythm of the winds throughout the year paints a picture of Kronstadt’s dynamic climate, where each month brings its own unique gust, inviting residents and visitors alike to embrace the changing seasons.

Average September Wind Speed in Kronstadt

The chart displays monthly wind speed patterns in Kronstadt, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.74.65.95.14.83.94.66.06.0 m/s6.87.16.2
Data source: Kronstadt September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Kronstadt Compares to Other Months

Weather in Kronstadt varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kronstadt, focusing on differences in temperature, rainfall, humidity, and UV levels.

When comparing the weather in September to that of January, the differences are striking. September typically sees milder temperatures, ranging from a minimum of 5°C (42°F) to a maximum of 22°C (71°F), with an average of 13°C (56°F). The month experiences substantial precipitation of 103 mm (4.0 in) over about 15 days, with a humidity level of 90%. In contrast, January plunges into much colder conditions, with temperatures dipping as low as -16°C (3°F) and reaching a maximum of just 5°C (42°F). The average temperature in January is -3°C (26°F), and while it sees less precipitation at 45 mm (1.8 in) over 13 days, the humidity is slightly higher at 97%. For a closer look at specific conditions, check out Kronstadt weather in January.

September and February present stark contrasts in weather patterns. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 22°C (71°F), accompanied by an average temperature of 13°C (56°F). The month also sees 103 mm (4.0 in) of precipitation over 15 days, with a humidity level of 90%. In sharp contrast, February experiences frigid conditions with temperatures plummeting to a minimum of -22°C (-8°F) and averaging -4°C (25°F), peaking at just 5°C (42°F). This month features lower precipitation levels of 55 mm (2.2 in) across 14 days, and it has a slightly higher humidity of 94%. For those interested in a detailed overview, you can find more information about Kronstadt weather in February.

September and March present stark contrasts in weather conditions. In September, temperatures range from a cool 5°C (42°F) to a comfortable max of 22°C (71°F), with an average of 13°C (56°F). The month sees significant rainfall of 103 mm (4.0 in) across 15 days, all accompanied by high humidity at 90%. In contrast, March experiences much colder temperatures, with a minimum of -20°C (-4°F) and a maximum of only 7°C (46°F), resulting in an average temperature of -2°C (29°F). Precipitation is lower at 55 mm (2.2 in) over 12 days, yet humidity remains high at 90%. The weather transition from September to March reflects a significant shift from mild autumn conditions to a frigid early spring atmosphere. For a closer look at conditions during this time, you can visit Kronstadt weather in March.

September and April present contrasting weather patterns. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 22°C (71°F), with an average of 13°C (56°F). The month experiences significant rainfall, totaling 103 mm (4.0 in) across approximately 15 days, while humidity remains high at around 90%. In contrast, April is much colder, with temperatures spanning from a low of -8°C (18°F) to a high of 14°C (58°F), averaging just 3°C (38°F). Precipitation in April is notably lower at 47 mm (1.8 in) over about 9 days, and the humidity is slightly lower at 86%. The stark differences in temperature and precipitation between these two months highlight the transition from the chill of early spring to the milder late summer conditions. For more details on the specifics of April weather in the region, you can check Kronstadt weather in April.

In comparing the weather of September and May, several notable differences emerge. September tends to be milder, with average temperatures ranging from a minimum of 5°C (42°F) to a maximum of 22°C (71°F), while May experiences slightly cooler temperatures, with a minimum of 1°C (35°F) and an average high of 23°C (74°F). Moreover, September is considerably wetter, receiving 103 mm (4.0 in) of precipitation over 15 days, compared to May's 49 mm (1.9 in) over just 9 days. The humidity is also higher in September at 90% compared to May's 71%, contributing to that month's overall damp feel. For a more detailed look at what to expect weather-wise, you can explore Kronstadt weather in May.

When comparing the weather in September and June, notable differences emerge in temperature, precipitation, and humidity. September typically sees a minimum temperature of 5°C (42°F) and an average of 13°C (56°F), with a maximum reaching 22°C (71°F). It is characterized by higher humidity at 90% and more rainfall, with 103 mm (4.0 in) spread over 15 days. In contrast, June is warmer, featuring a minimum of 6°C (43°F) and an average temperature of 16°C (61°F), peaking at 30°C (86°F). The month experiences significantly less precipitation at 55 mm (2.1 in) over just 8 days, and humidity levels are lower at 77%. For more detailed information about June weather, you can refer to Kronstadt weather in June.

When comparing the weather in September to that of July, notable differences emerge. September experiences cooler temperatures, with a minimum of 5°C (42°F) and an average of 13°C (56°F), whereas July is warmer, starting at a minimum of 11°C (53°F) and averaging 18°C (65°F). Additionally, September sees a higher maximum temperature of 22°C (71°F), compared to July's peak of 28°C (83°F). Precipitation is slightly higher in September, with 103 mm (4.0 in) over 15 days, compared to July's 87 mm (3.4 in) over 12 days. Humidity also tends to be more pronounced in September at 90%, while July maintains a lower level of 82%. For a closer look at July's weather specifics, visit Kronstadt weather in July.

September's weather is generally cooler and more humid compared to August. While August presents warmer temperatures with a minimum of 11°C (52°F) and a maximum of 26°C (79°F), September sees a drop in temperatures, ranging from a minimum of 5°C (42°F) to a maximum of 22°C (71°F). Additionally, September experiences a higher average humidity at 90%, compared to 86% in August. Although both months share the same number of precipitation days at 15, September's total precipitation of 103 mm (4.0 in) is less than August's 139 mm (5.5 in). For a more detailed look at August's weather, visit Kronstadt weather in August.

In September, the weather is relatively mild, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 22°C (71°F), averaging around 13°C (56°F). The month sees significant rainfall, with 103 mm (4.0 in) of precipitation over 15 days and a high humidity level of 90%. In contrast, October marks a notable shift; temperatures drop, starting at a minimum of -1°C (30°F) and averaging 7°C (46°F), with a maximum of only 16°C (61°F). This month also experiences increased precipitation at 112 mm (4.4 in) over 19 days, alongside slightly higher humidity at 93%. For more detailed insights on October weather in Kronstadt, visit Kronstadt weather in October.

September and November present a stark contrast in weather conditions. In September, temperatures are milder, with an average of 13°C (56°F) and daytime highs reaching up to 22°C (71°F), while humidity hovers at a high 90%. This month also sees considerable rainfall, totaling 103 mm (4.0 in) over about 15 days. In contrast, November brings a significant drop in temperature, with an average of just 3°C (38°F) and maximums only reaching 10°C (51°F), while the minimum can plummet to -5°C (23°F). Although precipitation decreases to 75 mm (2.9 in), it occurs over a slightly longer period of 16 days, accompanied by even higher humidity at 93%. For a more detailed look at the climate specifics, check out Kronstadt weather in November.

The weather in September is notably milder compared to December, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 22°C (71°F) and an average of 13°C (56°F). In contrast, December experiences significantly colder temperatures, featuring a chilling minimum of -17°C (2°F) and an average of -2°C (29°F). While September sees a higher average temperature, it also has more days of precipitation (15 days) than December, which has 18 days, but less total precipitation (103 mm vs. 79 mm). Additionally, humidity levels are slightly elevated in December at 94% compared to September's 90%. For a more detailed look at December weather, you can visit Kronstadt weather in December.

Compare Kronstadt's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Kronstadt

As September arrives in Kronstadt, the weather begins a gradual transition from the warmth of summer to the crispness of autumn. With average temperatures settling around a cool 13°C (56°F), the month showcases a noticeable drop compared to the preceding summer months. Expect more frequent rain, as precipitation occurs on about half the days, contributing to the overall high humidity of 90%. This blend of cooler temperatures and increased rainfall creates a picturesque setting, highlighting the charm of the changing seasons. To learn more about the weather patterns throughout the year, visit Kronstadt Climate.