Last updated: August 21, 2025
In September, Kuusamo, Finland experiences a remarkable transition from summer warmth to autumnal chill. With maximum temperatures reaching 21°C (70°F) and averages settling around 7°C (45°F), residents and visitors can expect a refreshing mix of mild and brisk days. The month sees a minimum temperature dipping to -4°C (26°F), highlighting the onset of cooler conditions. Rain is prominent, with 75 mm (2.9 in) of precipitation spread across 13 days, contributing to the region's lush landscapes. High humidity levels at 91% enhance the crisp air, making September an ideal time for experiencing the enchanting beauty of Kuusamo's natural surroundings.
In Kuusamo, Finland, September marks a notable transition from the warmth of summer to the chill of autumn. With temperatures ranging from a minimum of -4°C (26°F) to a pleasant maximum of 21°C (70°F), the average temperature settles around 7°C (45°F), inviting the vibrant hues of fall while still offering moments of warmth. This month acts as a bridge, showcasing a significant drop from the summer highs of August, yet bringing a gentle start to the colder months ahead. As the days shorten and nature prepares for winter's embrace, September in Kuusamo is a beautiful blend of cool crispness and lingering warmth, making it a captivating time to experience the changing landscapes.
September in Kuusamo, Finland, brings a notable shift as summer winds down, with precipitation reaching 75 mm (2.9 in) spread over 13 days. This month continues the trend established in late summer, where rainfall peaks notably in August at 99 mm, and the damp conditions persist into early autumn. Although September’s totals are lower than August, they remain in line with the wetter months of the year. The consistent rainfall seen throughout the summer and into September highlights a transition period for the region, setting the stage for the cooler, crisper months ahead. As nature adapts to the changing season, the frequent rainfall contributes to the lush landscapes that characterize the Finnish fall.
In September, Kuusamo, Finland experiences a notable shift in humidity levels, with an average of 91%, marking a slight increase from the summer months. This uptick signifies a transition as the warm, moist air of late summer gives way to the crispness of autumn. Over the year, humidity typically declines from the winter peak of 101% in January to a low of 79% in June, before gradually rising again. Interestingly, September's humidity represents a balance, settling comfortably between the heat of summer and the colder, wetter grip of late autumn. As the landscape prepares for the impending chill, this humid backdrop adds a layer of richness to the vibrant fall scenery, reminding us of the fleeting warmth before winter sets in.
In September, Kuusamo experiences a moderate UV Index of 3, with a recommended burn time of 30 minutes. As summer transitions into autumn, the UV levels begin to drop from the peak of July and June, when they reached 6. This gradual decrease reflects the shifting seasons and the reduced intensity of sunlight. While outdoor enthusiasts can enjoy the crisp fall air, it's still important to take protective measures against UV exposure, particularly during midday. For those planning to explore the beautiful landscapes of Kuusamo, staying informed about the UV Index is essential. For more details, visit Kuusamo UV Index.
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As September rolls into Kuusamo, Finland, the days still bask in a generous glow, offering 231 hours of sunshine. This marks a notable shift from the vibrant summer months, peaking in July with 478 hours of sunlight. As autumn approaches, daylight begins to wane, but September retains a comforting warmth before the briskness of October sets in, where the sun's embrace dwindles dramatically to just 100 hours. The transition from the lush greenery of summer to the crisp hues of fall is beautifully mirrored in this fluctuation of sunlight, creating a captivating interplay between light and the changing seasons. With the long, sunlit days now giving way to increasingly shorter ones, September serves as a gentle reminder of summer’s farewell, while hinting at the serene, quieter days ahead.
In Kuusamo, Finland, September sees a modest 24% chance of sunny weather, reflecting a slight uptick from August's 22%. This transitional month hints at the approaching autumn, where the sun's presence begins to wane compared to the sunnier summer months. Notably, the sunshine likelihood peaked in July with 42%, showcasing a clear trend of decreasing sunlight as the year progresses. While September may not offer the sunniest days, it still provides a reasonable opportunity for outdoor activities amid the vibrant colors of early autumn. As the year turns towards October, the chance of sun drops significantly to 6%, underscoring the importance of grabbing those rare sunny spells before winter sets in.
In September, Kuusamo, Finland welcomes the gradual transition from the long, sun-drenched days of summer to the shorter daylight hours of autumn. With approximately 13 hours of daylight, the month showcases a significant reduction from the previous months, yet it remains brighter than the approaching fall, setting a serene stage for nature's vibrant transformation. The daylight duration begins to subtly wane, dropping from the 16 hours experienced in August, reflecting the onset of seasonal change. As leaves start to don their autumn hues, September offers a beautiful blend of lingering warmth and the crisp air that hints at the winter to come, making it a captivating time in this northern paradise.
As autumn approaches in Kuusamo, Finland, September's wind carries a gentle breath at an average speed of 3.1 m/s (7 mph), slightly tapering off from the summer months where it hovered consistently around 3.2 m/s. This subtle decline reflects a transition in the atmosphere, signaling the upcoming chill of fall. While previous months exhibited a steady and calm breeze, September offers a hint of coolness in the air, setting the stage for the gustier winds that typically characterize October. The gradual fluctuations in wind speed throughout the year showcase Kuusamo's distinctive seasonal rhythm, as nature prepares for the stark beauty of winter.
Weather in Kuusamo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kuusamo, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present starkly contrasting weather conditions. In September, temperatures range from a chilly -4°C (26°F) at night to a comfortable 21°C (70°F) during the day, with an average of 7°C (45°F). The month experiences 75 mm (2.9 in) of precipitation over 13 days, coupled with high humidity levels of 91%. In contrast, January is much colder, with temperatures dropping to a minimum of -28°C (-17°F) and an average of -10°C (14°F). Daytime highs reach only 3°C (38°F), and while precipitation is lower at 41 mm (1.6 in) over 12 days, the humidity is notably high at 101%. For a detailed look at January weather, you can visit Kuusamo weather in January.
In comparing the weather between September and February, there is a stark contrast in temperature and conditions. September features a minimum of -4°C (26°F) and an average of 7°C (45°F), with highs reaching up to 21°C (70°F). This month experiences about 75 mm (2.9 in) of precipitation over 13 days, with humidity levels around 91%. In contrast, February presents much colder conditions, where temperatures can drop to a minimum of -27°C (-16°F) and have an average of -10°C (14°F), with a maximum of only 4°C (39°F). February's precipitation is notably lower at 36 mm (1.4 in) spread across 8 days, and humidity is quite high at 99%. For more detailed insights into the winter conditions, you can check Kuusamo weather in February.
September and March present starkly different weather conditions, highlighting the transition from late summer to early spring. In September, temperatures average around 7°C (45°F), with a more moderate range from -4°C (26°F) to a maximum of 21°C (70°F). The month sees 75 mm (2.9 in) of precipitation over about 13 days, along with a high humidity level of 91%. In contrast, March is significantly colder, with average temperatures plummeting to -6°C (21°F) and ranging from a minimum of -25°C (-12°F) to a maximum of 8°C (46°F). This month receives less precipitation, totaling 42 mm (1.6 in) over 10 days, and experiences slightly higher humidity at 94%. For a deeper look into the weather specifics, you can refer to Kuusamo weather in March.
When comparing the weather in September and April, a few distinct differences emerge. September typically enjoys milder temperatures, with averages around 7°C (45°F) and a maximum of 21°C (70°F), while April remains much colder, featuring an average of -1°C (31°F) and a maximum of only 15°C (60°F). Precipitation is more frequent in September, occurring over 13 days and totaling 75 mm (2.9 in), compared to April's 42 mm (1.7 in) across 9 days. Humidity levels are also slightly higher in September at 91%, while April maintains a modest 88%. For more details on the specific conditions you can expect, visit Kuusamo weather in April.
When comparing the weather in September and May, September generally enjoys milder temperatures, with average highs reaching up to 21°C (70°F) compared to May's maximum of 24°C (76°F). However, May can start off cooler, with a minimum temperature of -7°C (19°F) versus September's lowest at -4°C (26°F). Precipitation levels are higher in September, with approximately 75 mm (2.9 in) over 13 days, while May experiences less rainfall at 51 mm (2.0 in) across 10 days. The humidity is slightly higher in September at 91%, compared to 83% in May. For more detailed insights on the weather during this time, check out Kuusamo weather in May.
When comparing the weather in September and June, notable differences emerge. September sees a wider temperature range, with a minimum of -4°C (26°F) and a maximum of 21°C (70°F), while June's temperatures are generally milder, with a minimum of -1°C (31°F) and a maximum of 26°C (79°F). September experiences slightly less precipitation, averaging 75 mm (2.9 in) over 13 days, compared to June’s 86 mm (3.4 in) also spread across 13 days. Additionally, September's humidity is higher at 91%, compared to June's 79%, contributing to a more damp feel as summer transitions into autumn. For those interested in learning more about the June weather specifics, visit Kuusamo weather in June.
When comparing the weather in September and July, September tends to be cooler overall, with average temperatures ranging from a minimum of -4°C (26°F) to a maximum of 21°C (70°F), while July boasts warmer conditions, averaging between 4°C (40°F) and 28°C (82°F). Additionally, September experiences higher humidity at 91% compared to July's 83%. Both months have comparable precipitation levels, with September receiving 75 mm (2.9 in) over 13 days, slightly more than July's 72 mm (2.8 in) over 12 days. For more detailed insights into July weather, you can check Kuusamo weather in July.
In comparing the weather between September and August, September experiences cooler temperatures with a minimum of -4°C (26°F) and an average of 7°C (45°F), while August has milder temperatures, ranging from a minimum of 2°C (36°F) to an average of 12°C (55°F) and reaching a maximum of 29°C (84°F). Additionally, September sees increased precipitation with 75 mm (2.9 in) over 13 days, compared to August's 99 mm (3.9 in) spread across 17 days, making it slightly wetter overall. Humidity remains relatively high in both months, with September at 91% and August at 87%. For a more detailed look at August weather, visit Kuusamo weather in August.
In September, the weather is relatively mild with daytime temperatures averaging around 7°C (45°F), while nighttime temperatures can drop to a chilly -4°C (26°F). The month experiences an average of 75 mm (2.9 in) of precipitation over 13 days, accompanied by high humidity levels at 91%. By October, temperatures take a significant dip, with an average of just 2°C (35°F) and nighttime lows reaching -12°C (11°F). Precipitation slightly increases to 82 mm (3.2 in) over 16 days, and humidity rises to 96%. This change marks a noticeable transition towards colder and wetter conditions. For more detailed information, you can check Kuusamo weather in October.
In September, the weather in Kuusamo is relatively mild, with average temperatures ranging from a minimum of -4°C (26°F) to a maximum of 21°C (70°F). This month sees about 75 mm (2.9 in) of precipitation spread over 13 days and features a humidity level of 91%. In contrast, November brings a noticeable drop in temperatures, as averages plummet to between -20°C (-3°F) and 7°C (44°F), with an average temperature of -3°C (27°F). Although November has slightly less precipitation at 66 mm (2.6 in) over 15 days, the humidity rises to a high of 96%. For more detailed information, you can visit Kuusamo weather in November.
September and December present stark contrasts in weather conditions. In September, temperatures range from a mild minimum of -4°C (26°F) to a comfortable maximum of 21°C (70°F), with an average of 7°C (45°F). The month sees about 75 mm (2.9 in) of precipitation over 13 days, accompanied by high humidity at 91%. In contrast, December brings a much harsher climate, with temperatures plummeting to a minimum of -22°C (-8°F) and an average of -7°C (20°F), peaking at only 2°C (36°F). Although precipitation decreases to 54 mm (2.1 in), it occurs over 15 days, and humidity rises to a chilly 100%. For more detailed insights, you can check Kuusamo weather in December.
As September unfolds in Kuusamo, the weather transforms distinctly with cooler temperatures and increased humidity, setting it apart from the summer months. With a noticeable dip in warmth, average conditions hover around 7°C, while the evenings can drop to chilly lows. This atmospheric change brings about frequent rain, with nearly half the month experiencing precipitation, adding a certain moody charm to the landscape. As the days grow shorter and the natural world prepares for autumn, September becomes a time of reflection and transition. For a deeper insight into the climatic nuances of the region, visit Kuusamo Climate.