Last updated: August 27, 2025
In Östersund, Sweden, September brings a delightful transition into autumn, characterized by average temperatures hovering around 9°C (48°F). Daily highs can reach a pleasant 21°C (70°F), while evenings drop to a brisk 1°C (34°F), inviting cozy layers and warm drinks. This month experiences significant moisture, with 80 mm (3.1 in) of precipitation over 14 days, leading to a high humidity level of 92%. As the landscape transforms, locals and visitors can enjoy the rich hues of fall foliage alongside the crisp, refreshing air.
In September, Östersund, Sweden begins to transition from the warm embrace of summer to the crispness of autumn. With minimum temperatures hovering around 1°C (34°F) and averages at 9°C (48°F), the month offers a delightful chill that invites cozy layers. As the days progress, maximum temperatures reach a pleasant 21°C (70°F), allowing for comfortable outdoor activities. This gradual cooling trend marks a notable shift from the warmer months of July and August, where temperatures peaked at 30°C (86°F) and 27°C (80°F), respectively. As the vibrant hues of fall emerge, September serves as a beautiful bridge, blending the lingering warmth of summer with the cool promise of autumn ahead.
September in Östersund, Sweden, ushers in a notable increase in precipitation, with an average of 80 mm (3.1 in) of rain spread over 14 days. This marks a continuation of the wetter patterns established in the late summer months, reflecting a shift as autumn sets in. The rainfall not only surpasses the amounts seen in August but also rivals the precipitation expected in October, suggesting that this season is characterized by a significant uptick in moisture. As the days grow shorter and temperatures dip, September serves as a pivotal transition, bolstering the region’s lush landscapes while enticing nature enthusiasts to embrace the enchanting fall scenery.
In September, OEstersund, Sweden experiences a notable transition in humidity levels, averaging 92% as summer fades and autumn approaches. This slight increase from August’s 90% reflects a gradual shift in weather patterns, typical for this northern region. As the warmth of summer retreats, the air becomes more saturated, heralding the impending colder months. Overall, the trend highlights a consistent humidity landscape throughout the year, where winter months see the highest levels—capped at 100% in December—while summer months dip slightly, reaching their lowest in June at 81%. This rhythmic dance of humidity paints a picture of OEstersund’s distinct climate, where each season brings its own character.
As summer fades and autumn approaches in Östersund, Sweden, September brings a moderate UV Index of 3. With a burn time of about 30 minutes, this month signals a transition from the high levels of exposure experienced in July and June, where the Index peaked at 6. Compared to the preceding months, September's UV levels are a gentle reminder to stay vigilant, especially during clear days when solar radiation is still quite potent. This trend of declining UV radiation continues into October, where the Index drops to 2, further emphasizing the shift towards lower sun exposure as winter approaches. For more about UV Index trends throughout the year in Östersund, check out OEstersund UV Index.
UV Risk Categories
As summer gracefully fades into fall, September in Östersund, Sweden captures a remarkable transition in sunlight, offering 246 hours of bright days that invite outdoor exploration. Following the peak of July’s 470 hours, where the long, sunlit evenings reign, September’s light still lingers, though it wanes compared to the sun-drenched months of May and June. This gradual reduction in sunlight signals the impending arrival of autumn, where the crisp air complements the vibrant hues of changing leaves. By reflecting on the yearly trend, one can appreciate how September serves as a gentle bridge, allowing residents and visitors alike to soak up the last warm rays before the shorter days of October settle in with their 181 hours.
In Östersund, Sweden, the likelihood of enjoying sunny weather in September stands at a modest 22%. This marks a slight decline from the peak sunshine chances experienced in the spring months, with April leading the way at 42%. As summer fades, the transition into autumn continues, resulting in a gradual decrease in sunlight throughout the year; for instance, July boasts a healthier 40%, while August dips to 28%. The sunny prospects during September reflect a trend of dwindling brightness, hinting at the cooler and cloudier months that lie ahead. As such, while sunshine is still a possibility, it may be wise to prepare for a blend of weather as autumn approaches.
As autumn begins to settle in Östersund, Sweden, September brings a gentle transition with approximately 12 hours of daylight. Following the vibrant summer months, where daylight peaked at 20 hours in June, this month marks a noticeable decline as the days grow shorter. From the extended brightness of May and June, the light gradually wanes, dipping to 16 hours in August before the further decrease into autumn. This trend showcases the rhythmic dance of the seasons, emphasizing how September serves as a bridge between the lingering warmth of summer and the impending embrace of winter, a time when the natural world prepares for the shorter, more intimate days ahead.
As September settles in Östersund, Sweden, the average wind speed dances gracefully to about 3.5 m/s (8 mph), marking a gentle evolution from the summer months. Following a series of slightly fluctuating speeds throughout the year, September's breezy whisper is reminiscent of the lively gusts felt in March and April, both also at 3.8 m/s (9 mph). This softening of the winds signals the onset of autumn, where the transition is felt not just in the changing leaves but in the air itself, creating a harmonious blend of summer’s warmth and winter’s chill. Notably, the wind speeds are somewhat consistent, often oscillating between 2.7 and 3.8 m/s from January to August, suggesting a stable climate pattern that offers both respite and refreshment to the townsfolk as they prepare for the seasonal shift. As we approach the cooler months, the wind serves as a gentle reminder of the dynamic beauty that defines Östersund’s weather.
Weather in OEstersund varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in OEstersund, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present dramatically different weather conditions. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 21°C (70°F), with an average of 9°C (48°F). The month experiences approximately 80 mm (3.1 in) of precipitation spread over 14 days, coupled with high humidity at 92%. In stark contrast, January brings frigid temperatures, with lows plunging to -24°C (-11°F) and an average temperature of -5°C (23°F), peaking at only 7°C (46°F). Precipitation is lower at 50 mm (2.0 in) over 10 days, and humidity is notably high at 99%. This comparison highlights how September offers relatively mild and humid conditions, while January is characterized by severe cold and humidity. For more details, you can visit OEstersund weather in January.
September and February present stark contrasts in weather conditions. September experiences milder temperatures, with a minimum of 1°C (34°F) and an average of 9°C (48°F), reaching a maximum of 21°C (70°F). The month also sees a fair amount of rainfall, averaging 80 mm over about 14 days, accompanied by high humidity levels of 92%. In contrast, February is much colder, characterized by a minimum temperature dropping to -23°C (-9°F) and an average of -6°C (22°F), with a maximum that only reaches 6°C (44°F). Precipitation is lighter in February, totaling 34 mm over 8 days, but the humidity remains high at 97%. For those interested in more detailed weather patterns during this time, you can check OEstersund weather in February.
In September, the weather is significantly milder, with temperatures ranging from a minimum of 1°C (34°F) to a pleasant maximum of 21°C (70°F). The month experiences around 80 mm (3.1 in) of precipitation over approximately 14 days, coupled with high humidity levels at 92%. In contrast, March brings much colder conditions, with temperatures dipping as low as -27°C (-16°F) and only reaching a maximum of 11°C (51°F). The precipitation is lower at 45 mm (1.8 in) but occurs over about 12 days, and the humidity remains slightly higher at 94%. For a detailed look at March weather specifics, you can visit OEstersund weather in March.
In comparing the weather of September and April, we see notable differences in temperature and precipitation. September experiences milder conditions with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 21°C (70°F), while April has a wider range from -14°C (7°F) to a maximum of 19°C (67°F), highlighting the lingering chill in early spring. In terms of rainfall, September sees more precipitation at 80 mm (3.1 inches) over 14 days, compared to April's 32 mm (1.3 inches) over just 9 days. Humidity levels remain relatively high in both months, with September at 92% and April slightly lower at 89%. For a more detailed look at April weather, you can visit OEstersund weather in April.
September's weather is generally milder compared to May, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 21°C (70°F) and an average of 9°C (48°F). In contrast, May experiences slightly cooler conditions, with temperatures dipping as low as -4°C (24°F) and peaking at 24°C (76°F), averaging around 7°C (46°F). While September sees higher precipitation levels at 80 mm (3.1 in) over 14 days, May has a lower total of 53 mm (2.1 in) across 11 days. Additionally, September has a higher humidity level at 92% compared to May's 86%. For more detailed information, visit OEstersund weather in May.
September and June present distinctly different weather patterns. In September, temperatures range from a chilly 1°C (34°F) to a comfortable maximum of 21°C (70°F), with an average of 9°C (48°F). The month experiences more rainfall, totaling 80 mm (3.1 in) over about 14 days, and a high humidity level of 92%. Conversely, June boasts milder temperatures with a minimum of 1°C (34°F) and a maximum of 28°C (83°F), averaging around 13°C (56°F). Rainfall is slightly less, at 69 mm (2.7 in) over about 11 days, and humidity is lower at 81%. For a more detailed look at June weather, visit OEstersund weather in June.
In comparing the weather between September and July, we see notable differences in temperature and humidity. July boasts warmer temperatures, with averages around 15°C (59°F) and maximums reaching 30°C (86°F), while September's averages drop to 9°C (48°F) and maxima peak at only 21°C (70°F). Additionally, July has a slightly lower precipitation total at 84 mm (3.3 in) spread across 13 days, compared to September's 80 mm (3.1 in) over 14 days. Humidity levels are also higher in September, with 92% compared to July's 82%. For more details on July's weather, check OEstersund weather in July.
In comparing the weather of September to that of August, September presents a cooler climate, with average temperatures dropping from 13°C (56°F) in August to 9°C (48°F). While August enjoys a higher maximum temperature of 27°C (80°F), September's highs only reach 21°C (70°F), reflecting a significant decrease in warmth as summer transitions to fall. Additionally, September experiences slightly more precipitation, with 80 mm (3.1 in) over 14 days, compared to 74 mm (2.9 in) over 12 days in August. Humidity levels also rise in September, reaching 92%, up from August's 90%. For those interested in the specifics of August weather, you can find more information here: OEstersund weather in August.
In September, temperatures generally range from a minimum of 1°C (34°F) to a maximum of 21°C (70°F), providing a comfortable average of 9°C (48°F). The month brings about 80 mm (3.1 in) of precipitation over approximately 14 days, accompanied by a humidity level of 92%.
In contrast, October experiences cooler temperatures, with minimums dropping to -8°C (19°F) and an average of just 4°C (40°F), while highs reach up to 19°C (67°F). The amount of precipitation remains similar at 79 mm (3.1 in), also spread over 14 days, but the humidity increases slightly to 95%. This shift in weather patterns reflects the transition to autumn, making October notably chillier than September. For more specific information about October weather conditions, you can refer to OEstersund weather in October.
In September, the weather is relatively mild with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 21°C (70°F) and an average of 9°C (48°F). However, it is also characterized by high humidity at 92%, which, combined with 80 mm (3.1 in) of precipitation over 14 days, can create a damp atmosphere. In contrast, November sees much cooler temperatures, with a minimum of -14°C (7°F), an average of -1°C (31°F), and a maximum of 12°C (53°F). Although November experiences less precipitation at 49 mm (1.9 in) over 10 days, the humidity rises to 98%, making it feel quite chilly. For more detailed insights into November's weather, check out OEstersund weather in November.
September and December present markedly different weather patterns. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 21°C (70°F), with an average of 9°C (48°F). The month experiences about 80 mm (3.1 in) of precipitation over 14 days, accompanied by a high humidity of 92%. In contrast, December sees much colder temperatures, with a minimum of -21°C (-6°F) and a maximum of 7°C (44°F), averaging -4°C (25°F). Though December has slightly less precipitation at 63 mm (2.5 in) over the same number of days, it boasts an astonishing humidity level of 100%. For more details on the weather in December, you can visit OEstersund weather in December.
As September unfolds in Östersund, the weather presents a unique transition from the warmth of summer to the crispness of autumn. With average temperatures drifting around 9°C (48°F), the air takes on a fresher feel, while maximums cling to the last vestiges of warmth at 21°C (70°F). This month brings a notable increase in precipitation, averaging 80 mm (3.1 in) across about 14 days, contributing to the lush scenery that characterizes the area. The high humidity level of 92% adds a distinct freshness to the atmosphere but can also make the cool days feel chillier. For those planning a visit, be prepared for a mix of both beautiful early autumn days and the occasional rain, making September a truly dynamic time in Östersund. Discover more about this month's unique climate at OEstersund Climate.