Last updated: August 21, 2025
September in Kuopio, Finland presents a captivating transition into autumn, with temperatures ranging from a maximum of 23°C (74°F) to a minimum of -1°C (30°F). The average temperature hovers around a crisp 10°C (50°F), setting the stage for a cool yet refreshing month. Rainfall is a notable feature, with 91 mm (3.6 in) spread over 14 days, creating a lush, vibrant landscape. Coupled with a humidity level of 92%, the month delivers an invigorating and slightly damp ambiance, perfect for enjoying the stunning fall foliage that characterizes this beautiful region.
As September arrives in Kuopio, Finland, the city begins to transition from the warm embrace of summer to the cooler touch of autumn. The temperatures during this month typically range from a low of -1°C (30°F) to a comfortable max of 23°C (74°F), reflecting a significant drop from the peak summer heat. The average of 10°C (50°F) indicates a noticeable cooling trend, yet the lingering warmth still invites outdoor exploration before the chill of October sets in. As daylight shortens, the vibrant hues of fall further enhance the charm of Kuopio, creating a picturesque backdrop for residents and visitors alike.
In September, Kuopio, Finland experiences a notable increase in precipitation, receiving an average of 91 mm (3.6 in) over 14 days. This significant rainfall marks a continuation of the wetter trend established in the summer months, where August pushed the year's highest at 103 mm (4.0 in). September's rainfall is instrumental in transitioning the landscape from the lush greens of summer to the vibrant hues of autumn, while the frequency of rainy days keeps the air fresh and invigorating. As the months turn cooler, the steady rhythm of precipitation serves as a reminder of the changing seasons ahead, with October maintaining a relatively high average of 84 mm (3.3 in) but with an increase in rain days to 17. This pattern highlights a gradual shift from the more intense summer rains to the steadier, cooler showers of fall.
In September, Kuopio, Finland, experiences a humidity level of 92%, making it a month of transition as summer gives way to autumn. This figure is a notable increase from the relatively drier periods of late spring and summer, which see humidity levels ranging from 75% to 88%. As the days shorten and temperatures drop, the rising humidity reflects the changing seasons, creating a crisp atmosphere characteristic of early autumn. Overall, September's humidity serves as a reminder of the lingering warmth of summer while hinting at the moisture-laden air that will carry into the chillier months ahead.
As September unfolds in Kuopio, Finland, the UV Index settles at a moderate level of 3, indicating that sun exposure can lead to potential harm without adequate protection. With a recommended burn time of 30 minutes, this month offers a slight relief from the higher indexes experienced in the height of summer. After the high readings of 6 in June and July, followed by a moderate 5 in August, September brings a noticeable dip that heralds the transition to cooler months. This trend illustrates an inevitable decline in UV intensity as autumn approaches, making it essential to remain vigilant about sun protection while enjoying the early autumn sun. For more insights on UV levels and safety tips, visit Kuopio UV Index.
UV Risk Categories
September in Kuopio, Finland, offers a delightful transition into autumn, boasting 245 hours of sunshine. This is a notable decrease from the sun-drenched summer months—with June and July shining brightly at 484 and 477 hours respectively. As the days grow shorter, September reflects a gentle decline in light compared to August’s 385 hours, yet it still captures the essence of lingering warmth before the chill sets in. Following this vibrant month, the sunlight sharply diminishes, plunging to a mere 127 hours in October and dwindling even further into the cold winter months. Embrace the golden glow of September, a month that stands as a perfect bridge between the vitality of summer and the serene quiet of winter.
In Kuopio, Finland, September brings a moderate likelihood of sunny weather, with about 24% chance of sunshine. This marks a noticeable decline from the vibrant summer months of June and July, which boast chances of clarity at 50% and 47%, respectively. As autumn approaches, the chances for sunny days begin to wane, reflecting a trend of diminishing sunshine that continues into the following months, where October plummets to just 9%. While September can still offer pleasant days, it's essential to embrace the transitional essence of the season, as the warmth of summer gives way to the cooler, cloudier days of fall.
In September, Kuopio, Finland, experiences a significant transition in daylight as summer gives way to autumn. With 12 hours of daylight, the days are noticeably shorter than the sun-drenched months of June and July, which boast a remarkable 20 hours of sunlight. This gradual decline marks a shift from the vibrant, long days of summer towards the crisp, shorter days of fall. As sunlight diminishes, the charm of early autumn begins to reveal itself, inviting residents and visitors alike to enjoy the stunning colors of nature's palette before the daylight recedes further in October to just 9 hours. The evolving daylight serves as a gentle reminder of the changing seasons, each with its own unique allure.
As September unfolds in Kuopio, Finland, the average wind speed settles at a gentle 3.2 m/s (7 mph), maintaining the mild breezes typical for this time of year. Following the summer months where winds averaged around 3.3 m/s (7 mph) in August, September's winds gently hint at the changing seasons. The transition is apparent as the winds steadily pick up heading into autumn, with October's average rising to 4.1 m/s (9 mph). This gradual increase not only prepares the landscape for the crisp, invigorating air of fall but also captures the essence of Kuopio's evolving climate. Overall, September's winds serve as a bridge, blending the lingering warmth of summer with the forthcoming chill of autumn.
Weather in Kuopio varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kuopio, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures range from a chilly minimum of -1°C (30°F) to a pleasant maximum of 23°C (74°F), with an average of around 10°C (50°F). The month is characterized by relatively high humidity at 92% and a total precipitation of 91 mm (3.6 in) spread over about 14 days. In stark contrast, January brings significantly colder conditions, with temperatures ranging from a frigid minimum of -30°C (-21°F) to a maximum of just 6°C (43°F), averaging -6°C (21°F). Although January sees less precipitation at 49 mm (1.9 in) over 13 days, the humidity is slightly higher at 99%, contributing to the severe winter feel. For more information, visit Kuopio weather in January.
In comparing the weather of September and February, significant differences emerge. September boasts a milder temperature range, with minimums around -1°C (30°F) and average highs reaching up to 23°C (74°F), while February experiences much harsher conditions with lows plummeting to -29°C (-19°F) and an average maximum of only 6°C (42°F). Precipitation is more plentiful in September, totaling 91 mm (3.6 in) over 14 days, compared to February's 43 mm (1.7 in) across 11 days. Additionally, the humidity levels are remarkably high in both months, with September at 92% and February peaking at 98%. For a detailed look at February's weather in Kuopio, you can visit Kuopio weather in February.
In comparing the weather of September and March, notable contrasts emerge. September typically sees milder temperatures ranging from a minimum of -1°C (30°F) to a pleasant maximum of 23°C (74°F), with an average of 10°C (50°F). In contrast, March can be quite frigid, with temperatures plunging as low as -27°C (-16°F) and averaging around -3°C (26°F), reaching a maximum of only 11°C (52°F). Precipitation is higher in September at 91 mm (3.6 in) across 14 days, while March experiences less rainfall, totaling 43 mm (1.7 in) over 11 days. Additionally, March carries a slightly higher humidity level at 95%, compared to 92% in September. For a detailed look at the weather conditions in March, visit Kuopio weather in March.
When comparing the weather in September and April, notable differences emerge. September typically enjoys milder conditions, with average temperatures around 10°C (50°F) and maximums reaching up to 23°C (74°F), while April is chillier, with an average of just 2°C (35°F) and nighttime lows dipping to -15°C (5°F). Furthermore, September experiences more precipitation, accumulating 91 mm (3.6 in) over 14 days, compared to April's 42 mm (1.6 in) over 9 days. Humidity levels are also slightly higher in September at 92%, compared to April's 87%. For more details, you can visit Kuopio weather in April.
Comparing the weather in September and May, September typically experiences milder temperatures, with average highs reaching up to 23°C (74°F) and lows around 1°C (30°F). In contrast, May can see slightly cooler lows of -5°C (22°F) and warmer highs peaking at 27°C (81°F). Precipitation is more common in September, averaging 91 mm (3.6 in) over 14 days, compared to May's 56 mm (2.2 in) across 10 days. Additionally, humidity levels are higher in September at 92%, while May has a more comfortable humidity level of 78%. For more detailed information, check out Kuopio weather in May.
In comparing the weather of September and June, we see distinct differences in temperature and humidity. September has a broader temperature range, with minimums around -1°C (30°F) and maximums reaching up to 23°C (74°F), averaging 10°C (50°F). In contrast, June experiences milder conditions, with minimums around 1°C (34°F) and maximums soaring up to 32°C (91°F), averaging 15°C (60°F). Additionally, September tends to be wetter, receiving 91 mm (3.6 in) of precipitation over 14 days compared to June's 66 mm (2.6 in) over 11 days. Humidity levels are also higher in September at 92%, while June maintains a more comfortable 75%. For more detailed insights, check out Kuopio weather in June.
When comparing the weather in September and July, notable differences emerge in both temperature and humidity. September experiences cooler temperatures, with a minimum of -1°C (30°F) and an average of 10°C (50°F), while July boasts milder conditions, with a minimum of 6°C (44°F) and an average of 17°C (64°F). Rainfall is relatively similar, with September receiving 91 mm (3.6 in) over 14 days, compared to July's 84 mm (3.3 in) over 10 days. Additionally, September has a higher humidity level at 92%, contrasted with July's 83%. For a more in-depth look at July's weather, you can check out Kuopio weather in July.
In comparing the weather of September and August, a notable shift in temperatures can be observed. September experiences cooler conditions, with average temperatures ranging from a minimum of -1°C (30°F) to a maximum of 23°C (74°F), while August boasts warmer temperatures, averaging between 6°C (42°F) and 32°C (89°F). Precipitation levels are relatively similar, with September receiving 91 mm (3.6 in) over 14 days compared to August's 103 mm (4.0 in) across 15 days. Furthermore, September's higher humidity at 92% contributes to a more pronounced chill, contrasting with August’s 88%. For more detailed information, you can check out Kuopio weather in August.
In comparison to September, October experiences a noticeable drop in temperatures, with average daily highs decreasing from 10°C (50°F) to 5°C (41°F) and lows dropping from -1°C (30°F) to -5°C (23°F). Precipitation levels are slightly lower in October at 84 mm (3.3 in), but the number of rainy days increases to 17 compared to 14 in September. Additionally, humidity rises from 92% in September to 95% in October, contributing to a more damp and chilly atmosphere. For more details, you can check Kuopio weather in October.
In September, the weather is generally milder, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 23°C (74°F) and an average of 10°C (50°F). The month sees around 91 mm (3.6 in) of precipitation over 14 days and a humidity level of 92%. In contrast, November brings a significant drop in temperature, with the minimum plummeting to -15°C (5°F) and a cooler average of 1°C (33°F), peaking at only 10°C (50°F). Precipitation decreases slightly to 77 mm (3.0 in) over 15 days, and humidity rises to 94%. For more details, you can visit Kuopio weather in November.
September and December showcase stark contrasts in weather patterns. September typically enjoys milder temperatures, with averages around 10°C (50°F) and maximums reaching up to 23°C (74°F), while December plunges to much colder averages of -4°C (25°F) and can drop as low as -23°C (-9°F). In September, the weather is characterized by high humidity at 92% and a notable amount of precipitation (91 mm over 14 days), whereas December experiences even higher humidity at 98%, with slightly less precipitation at 68 mm but spread over more days (15). These differences highlight the transition from a relatively mild early autumn to the deep chill of winter. For more information on December weather, check out Kuopio weather in December.
September in Kuopio presents a transition from summer warmth to the crispness of autumn. With temperatures gradually declining and humidity remaining high, the days are noticeably cooler and the evenings can be quite chilly. Rainfall becomes more frequent, marking a shift towards the wetter season, as the city experiences an increase in precipitation days. This month truly encapsulates the essence of change, making it a unique blend of lingering warmth and the first hints of winter's approach. For a deeper understanding of what to expect throughout the year, visit Kuopio Climate.