Last updated: August 21, 2025
September in Inari, Finland is a month of transition, where the beauty of early autumn unfolds under a canvas of colorful foliage. With a maximum temperature reaching 22°C (71°F) and an average of 8°C (46°F), the days can be pleasantly warm, while chilly evenings remind visitors of the approaching winter. The weather is characterized by 92% humidity, contributing to the crisp atmosphere that envelops the region. Travelers should be prepared for some rain, as the month sees about 58 mm (2.3 in) of precipitation over 11 days. Embrace the opportunity to explore this tranquil landscape, where the mix of comfortable temperatures and occasional showers creates a unique experience in this serene corner of the world.
In September, Inari, Finland, begins to transition from the warmth of summer to the chill of autumn. The temperatures reflect this shift, with nightly lows dipping to -4°C (26°F) and average daytime highs reaching a comfortable 22°C (71°F). This month showcases a pleasant equilibrium, where early autumn's crisp air mingles with lingering warmth – perfect for enjoying the stunning fall foliage. As the month progresses, the average temperature settles around 8°C (46°F), indicating a clear trend towards cooler days ahead. Such fluctuations not only mark a significant change from the summer's heat but also hint at the winter chill lurking just around the corner.
In September, Inari experiences a notable shift in its precipitation patterns as the summer warmth begins to wane. With 58 mm (2.3 in) of rain falling over 11 days, this month marks a slight decrease from the previous, wetter conditions of August. Notably, September’s rainfall is comparable to the spring months, such as April and May, which see similar precipitation levels, but it coincides with an increasing number of rainfall days as autumn approaches. This trend illustrates a transition, where the crisp air of early fall blends with the remnants of summer moisture, creating a vibrant tapestry of changing landscapes throughout Inari.
In September, Inari, Finland experiences a noticeable uptick in humidity, reaching 92%, following the summer months. This slight increase from August's 90% marks a transition towards the more humid autumn season. As the year progresses, the humidity trends reveal a significant climb from the lower levels of 84% in May and 83% in June, steadily rising as temperatures drop. This pattern suggests that Inari’s humid conditions are inevitable as the days shorten, setting the stage for the even richer, cooler air of October and the peak dampness of winter. The gradual ascent in humidity levels encapsulates the region's distinctive seasonal rhythm, highlighting the shift from the bright, warm months to the enchanting embrace of fall and winter.
September in Inari, Finland marks a gentle transition as the UV Index dips to 2, indicating a low exposure category with a burn time of 45 minutes. This signifies a gradual reduction in sun intensity compared to the summer months, where the UV Index peaked at 5 in both June and July. As autumn approaches, residents and visitors can enjoy the beautiful landscapes without the intense sun exposure, while still keeping an eye on their time spent outdoors. It's a perfect moment to appreciate the beauty of nature without the urgency of sun protection. For more insights on UV levels throughout the year, check out the Inari UV Index.
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As September unfolds in Inari, Finland, the daylight begins to soften, marking the transition from the vibrant summer months to the calmer hues of autumn. With 237 hours of sunshine, September retains a pleasing mix of daylight, yet it's a noticeable dip compared to the 460 hours basked in during July, highlighting the fading warmth of summer. The sunlight trend showcases a gradual decline from unyielding brightness in June and July to the early twilight of October, where only 121 hours are left to grace the skies. This seasonal shift invites both reflection and the beauty of early autumn, as the crisp air and golden foliage begin to take center stage, making September a unique blend of lingering summer light and the promise of fall.
In Inari, Finland, the likelihood of sunny weather experiences a notable shift throughout the year. As winter fades, March emerges with a promising 32% chance of sunshine, leading into spring with April and May maintaining moderate levels. However, by the time September rolls around, the chance of sun drops to a modest 18%, slightly below August’s 19% and reflecting a general declining trend as autumn approaches. This decrease hints at the onset of cooler, cloudier days, reinforcing the idea that while late summer can still offer delightful stretches of sun, the allure of September's clear skies is increasingly overshadowed as the season transitions.
In Inari, Finland, the daylight duration throughout the year exhibits remarkable seasonal trends, reflecting the unique polar environment. September ushers in a gentle decline from the vibrant summer months, offering a respectable 13 hours of daylight. This marks a significant shift from the continuous daylight of June and July, gradually transitioning toward the shorter days of autumn. As the days shorten, October dips to just 9 hours, while November and December plunge into even darker realms with only 7 and no daylight, respectively. In contrast, the spring months erupt in brightness, peaking at 21 hours of daylight in May. As nature prepares for the long winter ahead, September serves as a poignant reminder of light’s fleeting beauty and the cyclical rhythm of life in the Arctic.
In September, the wind in Inari, Finland picks up slightly, with an average speed of 3.9 m/s (9 mph), signaling a transition into the brisk embrace of autumn. This reflects a subtle uptick from the summer months, where winds hovered around 2.9 to 3.3 m/s. As the leaves begin to change, the invigorating breeze encourages outdoor adventures, hinting at the cooler, more dynamic weather ahead. Looking at the broader trends throughout the year, wind speeds gradually increase from the gentle breezes of June (2.8 m/s) to the more pronounced gusts of October, which peak at 4.3 m/s (10 mph). This steady progression not only enriches the environment but also sets the stage for the winter months, creating a delightful contrast between the vibrant autumn and the serene, snowy landscape to come.
Weather in Inari varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Inari, 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 pleasant 22°C (71°F) during the day, with an average of about 8°C (46°F). The month sees a moderate amount of precipitation at 58 mm (2.3 in) over 11 days, accompanied by high humidity at 92%. Conversely, January is characterized by much colder conditions, with nighttime lows plunging to -27°C (-17°F) and daytime highs only reaching 5°C (41°F), averaging around -10°C (14°F). Precipitation is lower at 34 mm (1.3 in) across 10 days, and humidity is even higher at 99%. For a detailed view of January weather, visit Inari weather in January.
September and February exhibit stark contrasts in weather patterns. In September, temperatures range from a chilly -4°C (26°F) at night to a pleasant 22°C (71°F) during the day, with an average temperature of 8°C (46°F). The month sees 58 mm (2.3 in) of precipitation over 11 days, accompanied by relatively high humidity at 92%. In contrast, February is marked by more extreme cold, with temperatures plummeting to a minimum of -27°C (-17°F) and averaging at -10°C (14°F). The maximum temperature barely reaches 5°C (41°F), and precipitation is less frequent, totaling 31 mm (1.2 in) over 7 days, with even higher humidity at 98%. For more detailed insights on February weather, you can visit Inari weather in February.
In comparing the weather between September and March, it’s evident that September enjoys a milder climate, with daily temperatures ranging from a minimum of -4°C (26°F) to a comfortable average of 8°C (46°F) and a maximum of 22°C (71°F). In contrast, March experiences significantly colder conditions, where temperatures can plummet to a minimum of -25°C (-12°F) and an average of -6°C (21°F), peaking at only 7°C (46°F). Precipitation is more frequent in September, with 58 mm (2.3 inches) over 11 days compared to March's 31 mm (1.2 inches) across 9 days. Additionally, both months have high humidity levels, with March slightly higher at 94% versus September's 92%. For more details, check out Inari weather in March.
September and April present contrasting weather patterns. In September, the days start to warm up, with temperatures ranging from a chilly minimum of -4°C (26°F) to a pleasant maximum of 22°C (71°F) and an average of 8°C (46°F). The month experiences about 58 mm (2.3 in) of precipitation over 11 days, accompanied by high humidity levels of 92%.
Conversely, April tends to be colder, with temperatures dropping to a minimum of -17°C (2°F), rising to a maximum of only 13°C (56°F), and averaging -1°C (31°F). Precipitation is lighter, totaling 32 mm (1.3 in) over 9 days, and the humidity remains relatively high at 90%.
For more detailed information about April weather in Inari, you can visit Inari weather in April.
In comparing the weather between September and May, we can observe notable differences. September experiences a slightly warmer range, with average temperatures between -4°C (26°F) and 22°C (71°F), while May sees a cooler temperature range of -7°C (20°F) to 21°C (70°F). Both months have similar precipitation levels, around 58-59 mm (2.3 in) over 11 days; however, September's humidity is higher at 92%, compared to May's 84%. The warmer conditions in September may make it feel more pleasant, despite the slightly higher moisture in the air. For detailed weather specifics in May, you can visit Inari weather in May.
In comparing the weather of September and June, we observe that both months feature a similar number of precipitation days, with September receiving 58 mm of rain and June slightly more at 66 mm. September's temperatures range from a chilly minimum of -4°C (26°F) to a comfortable maximum of 22°C (71°F), while June is slightly warmer, with temperatures ranging from -1°C (30°F) to a maximum of 25°C (77°F). The humidity is notably higher in September at 92%, compared to June's 83%, contributing to a more damp feel. For more detailed information, you can check Inari weather in June.
In comparing the weather between September and July, we see distinct differences in temperature, precipitation, and humidity. September experiences cooler temperatures, with a minimum of -4°C (26°F) and an average of 8°C (46°F), compared to July's warmer minimum of 3°C (37°F) and average of 15°C (59°F). July also boasts a higher maximum temperature of 31°C (88°F), while September peaks at 22°C (71°F). Both months receive precipitation on 11 days, but July has a higher total rainfall of 76 mm (3.0 in) versus September's 58 mm (2.3 in). Humidity levels are slightly higher in September at 92%, compared to 85% in July. For more specific details on July weather, you can check Inari weather in July.
In comparing the weather of September and August, it's evident that September brings cooler temperatures, with a maximum of 22°C (71°F) compared to August's warmer peak of 31°C (89°F). The average temperature drops from 12°C (54°F) in August to 8°C (46°F) in September, and the minimum temperature also sees a decrease, falling to -4°C (26°F) in September. Additionally, September experiences slightly less precipitation at 58 mm (2.3 in) over 11 days, compared to August's 87 mm (3.4 in) over 15 days. The humidity remains quite high in both months, at 92% in September and 90% in August. For more detailed information, you can check Inari weather in August.
In comparing the weather between September and October, it's clear that October brings a significant drop in temperatures. While September boasts an average temperature of 8°C (46°F) and a maximum of 22°C (71°F), October sees a notable decrease with an average of just 2°C (35°F) and a maximum of 13°C (55°F). Additionally, October experiences a more pronounced chill with minimum temperatures plunging to -12°C (10°F) compared to September’s milder -4°C (26°F). Precipitation also rises from 58 mm (2.3 in) over 11 days in September to 67 mm (2.6 in) over 14 days in October, accompanied by a slight increase in humidity from 92% to 96%. For more detailed information, you can check Inari weather in October.
September and November present stark contrasts in weather conditions. September boasts a milder temperature range, with minimums around -4°C (26°F) and maximums reaching up to 22°C (71°F), making it a much more pleasant average of 8°C (46°F). The month also sees a moderate level of precipitation, totaling 58 mm (2.3 in) over 11 days, with humidity at a relatively comfortable 92%. In contrast, November brings much colder temperatures, with minimums dropping to -25°C (-12°F) and maximums only reaching 7°C (44°F), resulting in a chilling average of -4°C (26°F). Although it experiences less rain, with 39 mm (1.5 in) across 9 days, the humidity is slightly higher at 98%. For more detailed information about the weather in this month, check out Inari weather in November.
September's weather offers a mild transition from summer to autumn, with temperatures ranging from a frosty -4°C (26°F) at night to a comfortable 22°C (71°F) during the day. The month experiences an average temperature of 8°C (46°F) and receives about 58 mm (2.3 in) of precipitation over approximately 11 days, accompanied by high humidity at 92%. In contrast, December plunges into the depths of winter, characterized by much colder temperatures that drop to a minimum of -28°C (-18°F) and peak at just 3°C (38°F), averaging a stark -8°C (18°F). This month sees less precipitation overall, totaling 39 mm (1.5 in) across about 10 days, but it boasts a chilling 100% humidity. For a closer look at what to expect, check out Inari weather in December.
As September rolls in, Inari transitions from the briskness of summer to the cool embrace of autumn, bringing with it a tapestry of changing colors and refreshing air. While temperatures begin to drop, offering a maximum of 22°C and dipping to chilling lows around -4°C, the overall average sits comfortably at 8°C. This month experiences notable precipitation, with around 58 mm over 11 days, contributing to a lush, vibrant landscape. The high humidity at 92% adds a crispness to the atmosphere, making it feel distinctly different from the drier summer months. Embrace the unique charm and transitions of September's climate by exploring more about the region's atmospheric patterns at Inari Climate.