Last updated: August 27, 2025
In September, Kiruna, Sweden, experiences a striking transition into autumn, with temperatures ranging from a maximum of 20°C (69°F) to a brisk minimum of -5°C (24°F). The month showcases an average temperature of 6°C (44°F), creating a cool but invigorating atmosphere. With 76 mm (3.0 in) of precipitation spread across 12 days, the air is charged with a notable humidity of 92%, contributing to the misty, ethereal landscapes that define this enchanting northern gem. As nature prepares for winter, September in Kiruna is a tapestry of vivid colors and atmospheric conditions, enticing visitors to experience its unique charm.
In September, Kiruna begins its gradual transition from summer to the crisp embrace of autumn. With average temperatures hovering around 6°C (44°F), the days still hold onto a mild warmth, peaking at 20°C (69°F), ideal for outdoor adventures under the fading sun. However, the nights can grow chilly, dipping to a brisk -5°C (24°F), hinting at the approaching winter. This month marks a distinctive shift as the lush greens of summer start to surrender to the vibrant hues of fall, creating a stunning backdrop for those exploring the captivating landscapes of northern Sweden.
In September, Kiruna experiences a substantial amount of precipitation, totaling 76 mm (3.0 in), marking it as one of the wetter months of the year. With 12 days of rainfall, this period serves as a transition from the lush, wet summer months of July and August, both exceeding 100 mm, to the drier days that fall in October and beyond. September's rainfall, while significant, is a gentle decline from the summer peaks, suggesting a gradual shift towards the colder, less humid months ahead. This notable autumnal precipitation also indicates the onset of seasonal changes, making it a critical time for the natural landscape of Kiruna as it prepares for the winter chill.
As summer gracefully fades into autumn, September in Kiruna, Sweden, showcases a notable shift in humidity levels. With humidity hovering at 92%, September experiences a mild increase from the preceding months, which are characterized by warmer and drier conditions—July and August recorded humidity at 84% and 88%, respectively. This slight uptick signals the transition towards the wetter months ahead, with humidity steadily rising in preparation for winter. By the time October rolls in, Kiruna’s atmospheric moisture ramps back up to 96%, setting the stage for the snowy blanket that will soon envelop the landscape.
As September rolls into Kiruna, Sweden, the UV Index dips to 3, signaling a transition from the summer sun. This moderate exposure level means that while the risk of harm from unprotected sun exposure starts to decrease, it’s still wise to be cautious, with a burn time of just 30 minutes for those with lighter skin. Throughout the summer months, the UV Index hovered around 4 to 5, demanding more attention to sun safety. Observing this trend, it's clear that the autumn months bring a welcome relief from the strongest UV rays of summer, but vigilance remains advisable. For more detailed information on how UV levels shift throughout the year, visit Kiruna UV Index.
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As summer transitions into autumn, September in Kiruna, Sweden, offers a beautiful interlude of sunlight, boasting a generous 260 hours of clear skies. This month reflects a gradual decline from the sun-drenched days of July and August, where residents enjoyed nearly 460 and 380 hours, respectively. The decline in daylight hours is a gentle reminder of the impending winter as sunshine slips to 137 hours by October. However, September still carries the warmth of summer’s tail end, illuminating the stunning landscapes of this Arctic town with soft, golden hues, making it an enchanting time for both locals and visitors to embrace nature before the long nights settle in.
In Kiruna, Sweden, September brings a modest 22% chance of sunny weather, which follows the summer months of July and June with significantly higher probabilities at 42% and 43%, respectively. As the season transitions towards autumn, the likelihood of sunshine sees a notable decline, echoing the patterns observed in April and May, suggesting a shift back towards cloudier days. While September's chance of sun is higher than the winter months of January and October, it remains lower than the summer peak, painting a picture of an early autumn characterized by cooler temperatures and the gradual fading of bright days. This data hints at a brief but memorable flash of late summer sun, perfect for outdoor adventures before the long, dark winter settles in.
As September arrives in Kiruna, Sweden, daylight begins a gentle decline, offering around 13 hours of sunlight—still a substantial amount compared to the winter months ahead. After basking in the 24 hours of daylight during June, the days gradually shorten throughout the summer. In August, Kiruna enjoys 17 hours of light, but by the time September rolls in, there’s a noticeable shift as the sun sinks earlier in the sky. This transition foreshadows the impending nights of October, when daylight plummets to just 9 hours. The gradual ebb of daylight in September serves as a poignant reminder of nature's rhythm, inviting residents to savor each golden hour before the long, dark winter sets in.
As September rolls into Kiruna, Sweden, the winds pick up, ushering in an average speed of 3.5 m/s (8 mph), making it one of the breezier months of the year. This increase is a delightful contrast to the calmer winds of late summer, where averages hovered around 2.6 m/s (6 mph) in August. Throughout the year, wind speeds show a gentle rise in spring and summer, peaking in September before settling back down to around 3.2 m/s (7 mph) in October. This consistent ebb and flow of wind reflects the dynamic nature of Kiruna's climate, transitioning from the warmer months into the crisp embrace of autumn. As the gusts dance through the colorful landscapes, September remains a reminder of nature's rhythm and the changing seasons.
Weather in Kiruna varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kiruna, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather conditions. In September, temperatures range from a chilly -5°C (24°F) at night to a pleasant 20°C (69°F) during the day, with an average of 6°C (44°F). The month sees 76 mm (3.0 in) of precipitation spread over 12 days, accompanied by high humidity at 92%. In contrast, January is much colder, with temperatures plummeting to a minimum of -32°C (-25°F) and a maximum of only 5°C (41°F), averaging -11°C (13°F). Despite a lower total precipitation of 39 mm (1.5 in) over 11 days, the humidity is at its peak at 100%, creating a chilling atmosphere. For more details, you can check Kiruna weather in January.
In comparing the weather between September and February, one can observe significant differences in temperature and precipitation. September boasts a milder climate with average temperatures peaking at 20°C (69°F) and a minimum of -5°C (24°F), while February experiences much colder conditions, where temperatures can plummet to as low as -30°C (-22°F) and only reach a maximum of 7°C (46°F). Additionally, September sees more precipitation, totaling 76 mm (3.0 in) over 12 days, whereas February has less, with only 34 mm (1.3 in) over 9 days. Humidity levels are notably high in both months, at 92% in September and 98% in February, contributing to a consistently damp atmosphere. For more specific details on February weather, you can refer to this link: Kiruna weather in February.
In comparing the weather of September and March, a stark contrast is evident. September typically sees milder temperatures, ranging from a minimum of -5°C (24°F) to a maximum of 20°C (69°F), with an average temperature of 6°C (44°F). The month experiences 76 mm (3.0 in) of precipitation over 12 days and maintains high humidity at 92%. In contrast, March is considerably colder, with temperatures dropping to a minimum of -28°C (-18°F) and an average of -6°C (21°F), reaching a maximum of only 8°C (48°F). While March has less precipitation, with only 36 mm (1.4 in) over the same number of days, humidity remains high at 93%. For a closer look at March weather specifics, check out Kiruna weather in March.
When comparing the weather in September and April, a significant difference in temperature is evident. September boasts a milder range, with average temperatures ranging from a crisp 6°C (44°F) to a high of 20°C (69°F), while April is much chillier, with average temperatures hovering around -2°C (29°F) and dipping as low as -18°C (1°F). Additionally, September experiences more precipitation at 76 mm (3.0 in) over 12 days, compared to April's 31 mm (1.2 in) spread over just 7 days. While both months maintain high humidity levels—in September at 92% and in April at 89%—the overall conditions in September are more conducive to outdoor activities. For those interested in learning more about the specific weather conditions in the month of April, please visit Kiruna weather in April.
In September, temperatures begin to rise, with a minimum of -5°C (24°F) and an average of 6°C (44°F), peaking at a comfortable 20°C (69°F). This month experiences more frequent precipitation, totaling 76 mm (3.0 in) over 12 days, alongside a high humidity of 92%. In contrast, May sees slightly cooler temperatures, with a minimum of -9°C (17°F) and an average of 4°C (39°F), while reaching a maximum of 22°C (72°F). The month is drier, with total precipitation of 54 mm (2.1 in) over 11 days and lower humidity at 84%. For a more detailed look into May's weather, you can explore Kiruna weather in May.
Comparing the weather in September and June reveals notable differences. In September, temperatures range from a minimum of -5°C (24°F) to a maximum of 20°C (69°F), with an average temperature of 6°C (44°F). The month tends to be quite humid, with humidity levels reaching 92% and precipitation occurring on about 12 days, amounting to 76 mm (3.0 in). In contrast, June experiences milder weather with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 26°C (79°F) and an average of 11°C (52°F). While June is also slightly drier, with 74 mm (2.9 in) of precipitation over 10 days, it has lower humidity levels at 81%. For more detailed insights, check Kiruna weather in June.
When comparing the weather in September and July, notable differences emerge in both temperature and precipitation patterns. September experiences a cooler climate with average temperatures around 6°C (44°F) and a maximum of 20°C (69°F), while July boasts warmer conditions, with an average of 14°C (57°F) and highs reaching up to 30°C (85°F). Additionally, July sees more precipitation at 108 mm (4.2 in) over 13 days compared to September's 76 mm (3.0 in) falling over 12 days. Humidity levels are also different, with September feeling more humid at 92% compared to July's 84%. For more specific details about July weather, you can check out Kiruna weather in July.
In comparing the weather of September and August, it is evident that September experiences cooler temperatures with a minimum of -5°C (24°F) and an average of 6°C (44°F), while August has a milder range, with a minimum of 1°C (34°F) and an average of 11°C (53°F). The maximum temperature in August reaches 27°C (82°F), significantly higher than September's 20°C (69°F). Additionally, September sees a higher humidity level at 92%, compared to August's 88%, and experiences less precipitation, with 76 mm (3.0 in) over 12 days versus August's 104 mm (4.1 in) over 16 days. For more details, check out Kiruna weather in August.
September in Kiruna typically offers milder temperatures, with a range from a chilly -5°C (24°F) at night to a pleasant max of 20°C (69°F) during the day. While the month averages around 6°C (44°F), it also sees approximately 76 mm (3.0 in) of precipitation spread over 12 days, accompanied by high humidity at 92%. In contrast, October brings a significant drop in temperatures, with nighttime lows plunging to -17°C (2°F) and daytime highs peaking at only 12°C (54°F), resulting in an average temperature of 0°C (32°F). This month also experiences increased precipitation, totaling about 84 mm (3.3 in) over 15 days and an even higher humidity level of 96%. For a closer look at what to expect, check out Kiruna weather in October.
In September, the weather in Kiruna is relatively mild, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 20°C (69°F) and an average temperature of 6°C (44°F). It experiences around 76 mm (3.0 in) of precipitation over approximately 12 days, accompanied by a humidity of 92%. In contrast, November brings a stark shift in temperatures, dropping to a minimum of -28°C (-17°F) and an average of -5°C (23°F), with a maximum of only 7°C (44°F). The precipitation decreases to 44 mm (1.7 in) over about 11 days, but the humidity rises slightly to 97%. For more details, check out Kiruna weather in November.
September and December in Kiruna showcase a noticeable contrast in weather conditions. September experiences milder temperatures with a minimum of -5°C (24°F) and an average of 6°C (44°F), peaking at a comfortable 20°C (69°F). Precipitation is relatively high, totaling 76 mm (3.0 in) over 12 days, alongside a high humidity level of 92%. In stark contrast, December brings much colder temperatures, with lows plunging to -28°C (-19°F) and an average of -9°C (17°F), while highs only reach 4°C (39°F). Although precipitation decreases to 51 mm (2.0 in), it still falls over 12 days, with humidity rising to a chilly 100%. For more detailed information, check Kiruna weather in December.
As September arrives in Kiruna, the weather begins to shift significantly, marking a transition into autumn. With temperatures ranging from mild days to chilly nights, this month offers a refreshing blend of comfortable highs around 20°C and cool lows that can dip to -5°C. Unlike the drier summer months, September is characterized by increased rainfall, with approximately 76 mm of precipitation spread over 12 days, resulting in a uniquely vibrant atmosphere, often accompanied by a heightened humidity level of 92%. This month not only ushers in the beauty of fall colors but also a sharp contrast to the warmer and drier conditions of summer. For a deeper understanding of what to expect throughout the year, explore our guide on Kiruna Climate.