Last updated: August 27, 2025
September in Umeå, Sweden, is characterized by a refreshing transition from summer to autumn. With average temperatures hovering around 11°C (51°F) and a maximum of 19°C (66°F), the days gradually cool down, offering a crisp embrace as the month progresses. Nighttime can dip to a chilly 1°C (34°F), making it essential to bundle up as the vibrant foliage begins to settle into its seasonal hues. Precipitation is fairly common, with 85 mm (3.4 in) of rain falling over approximately 12 days, contributing to an overall humidity level of 88%. This combination creates a moist, atmospheric backdrop for exploring the stunning landscapes and rich culture of this northern gem.
As September unfolds in Umeå, Sweden, temperatures begin to shift noticeably from the summer warmth. The month greets residents with minima dipping to around 1°C (34°F), while daily averages settle at a cool 11°C (51°F). Maximum temperatures peak at a mild 19°C (66°F), signifying a gentle transition into autumn. This trend reflects a steady decline from August's pleasantly warm days, introducing crispness to the air and a vibrant palette of fall colors. Whether you're taking leisurely strolls along the riverbanks or enjoying the early signs of the changing seasons, September in Umeå offers a perfect blend of comfortable coolness and the charm of nature's shift.
As September unfolds in Umeå, Sweden, the weather takes a noticeably wetter turn, with precipitation levels rising to 85 mm (3.4 in) over 12 days. This marks a significant increase compared to the summer months, where rainfall peaked in August at 77 mm (3.0 in). The transition into autumn is accompanied by more frequent showers, paving the way for the 114 mm (4.5 in) typically seen in October. This trend reveals how the changing seasons influence precipitation, setting the stage for the wetter months ahead, while also emphasizing the importance of preparation for the community as they navigate the shift from the milder summer climate to the chill of autumn.
As September rolls in Umeå, Sweden, the air begins to regain some of the humidity lost during the summer months, with levels rising to 88%. This transitional month marks a shift from the drier conditions of late summer, where humidity dipped to a comfortable 74% in June and 80% in July, before nudging up again in August. Although September's humidity is still lower than the peak levels seen in winter—where it reaches a staggering 95% in January—it precedes the inevitable return to more humid conditions of autumn and winter, mirroring trends seen in previous years. With autumn's arrival, residents can expect a gradual increase in moisture, bridging the gap between the vibrant summer and the crisp, chilly months ahead.
As September arrives in Umeå, Sweden, the UV Index drops to a moderate level of 3, reflecting the transition from the sun-soaked summer months. This means that while the sun’s rays are less intense, caution is still advised, with a recommended burn time of 30 minutes for unprotected skin. Following the high levels experienced in June and July, and the moderate conditions of August, September presents an opportunity to enjoy the crisp autumn air while being mindful of UV exposure. As the daylight decreases and autumn sets in, residents can begin to embrace the changing seasons, yet it’s wise to stay informed about UV levels—explore more at Umea UV Index.
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As September rolls into Umeå, Sweden, the city bids farewell to the sun-soaked days of summer, basking in a still generous 294 hours of sunlight. This marks a notable decline from the sunniest months of June and July, each boasting over 500 hours of brilliance. The trend of diminishing daylight accelerates as autumn approaches, with hours dropping significantly into October's 196 hours. Despite this reduction, September's sunshine still reflects a vibrant transition, where the warmth of summer lingers just a bit longer, brushing the beginning of fall with a golden glow that lures residents and visitors alike to savor the changing season.
As the summer sun fades away, September in Umeå, Sweden, ushers in a notable shift in weather patterns. With a 28% chance of sunny days, this month marks a decline from the balmy days of summer, peaking at 53% in July. Although still brighter than the encroaching autumn months of October, with only an 18% chance, September reflects a transitional phase where the thrill of sunshine gives way to the chill of fall. This trend underscores the gradual retreat of daylight, inviting both the beauty of early autumn and the crisp air that follows. As the season changes, residents and visitors alike should savor those precious sunny moments before the landscape transforms into the muted tones of winter.
As summer fades, September in Umeå, Sweden, marks a transition with daylight lasting about 12 hours. This is a noticeable shift from the long, sunlit days of June and July, which boast up to 20 hours of brightness. The month begins with lingering warmth, but as autumn approaches, daylight gradually diminishes, preparing the region for the shorter days of October, which offer only 9 hours. This trend highlights the striking contrast between the vibrant, sun-filled days of midsummer and the cooler, darker periods ahead, inviting both reflection on the seasons past and anticipation for the changing landscape.
As September arrives in Umeå, Sweden, the average wind speed settles at a brisk 4.5 m/s (10 mph), reflecting a slight uptick from the calmer summer months. This transitional period marks a subtle shift in the seasonal breeze, slightly stronger than August's gentle 4.3 m/s. Looking at the wind patterns throughout the year, it's evident that the chillier months often bring increased gusts, with October seeing a notable rise to 5.5 m/s. While September maintains a moderate flow, it hints at the approaching autumn, encouraging both locals and visitors to enjoy the fresh air and prepare for the invigorating winds that characterize the colder months ahead.
Weather in Umea varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Umea, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is noticeably milder, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 19°C (66°F) and an average of 11°C (51°F). This month also experiences a fair amount of rainfall, totaling 85 mm (3.4 in) over approximately 12 days, alongside a high humidity level of 88%. In contrast, January brings much colder conditions, with temperatures plummeting to a minimum of -20°C (-4°F) and only reaching a maximum of 7°C (45°F), averaging -4°C (25°F). The precipitation is less than in September, at 55 mm (2.2 in) over about 10 days, but the humidity increases to 95%. For more details on January weather, you can check Umea weather in January.
September and February exhibit starkly contrasting weather patterns. In September, the temperature ranges from a minimum of 1°C (34°F) to a maximum of 19°C (66°F), with an average of 11°C (51°F), accompanied by a relatively high humidity level of 88%. This month sees about 85 mm (3.4 in) of precipitation over approximately 12 days. In contrast, February experiences much colder conditions, with temperatures ranging from a frigid -19°C (-3°F) to a maximum of just 6°C (43°F) and an average temperature of -5°C (24°F). The humidity is slightly higher at 93%, but the overall precipitation is lower, totaling 53 mm (2.1 in) over 9 days. For a more detailed understanding, you can visit Umea weather in February.
In comparing the weather between September and March, we see a significant shift in temperatures and conditions. September enjoys milder temperatures, ranging from a minimum of 1°C (34°F) to a maximum of 19°C (66°F), with an average of 11°C (51°F). However, it also experiences higher humidity at 88% and substantial precipitation, totaling 85 mm (3.4 in) over 12 days. In contrast, March is much colder, with temperatures ranging from a minimum of -17°C (1°F) to a maximum of 9°C (48°F) and an average temperature of -2°C (29°F). While March has lower precipitation at 47 mm (1.8 in) over 10 days, it comes with higher humidity at 91%. For a detailed look at March's weather, you can visit Umea weather in March.
In comparing the weather of September and April, it’s clear that September tends to be milder and wetter. The average temperature in September is a comfortable 11°C (51°F), with maximums reaching 19°C (66°F), while April's average is significantly lower at 2°C (35°F), with highs peaking at 12°C (54°F). Additionally, September experiences more precipitation, with 85 mm (3.4 in) over 12 days, compared to April's 28 mm (1.1 in) over just 7 days. Humidity levels are also slightly higher in September at 88%, compared to April's 85%. For more details on April weather, you can refer to Umea weather in April.
When comparing the weather in September and May, notable differences emerge in temperature and precipitation patterns. September tends to be slightly warmer, with average temperatures ranging from 1°C (34°F) to a maximum of 19°C (66°F), while May has a broader temperature range, dipping to -1°C (30°F) at its minimum but reaching up to 21°C (71°F) for its maximum. While both months experience significant humidity, September is notably more humid at 88% compared to May's 77%. Additionally, September sees more precipitation, averaging 85 mm (3.4 in) over 12 days, whereas May experiences less rain at 46 mm (1.8 in) across 9 days. For more detailed insights on May weather, you can check out Umea weather in May.
In September, temperatures begin to cool off, with a minimum of 1°C (34°F) and an average of 11°C (51°F), peaking at 19°C (66°F). This month also sees more precipitation, averaging 85 mm (3.4 in) over about 12 days, along with higher humidity levels of 88%. In contrast, June presents milder weather, with temperatures ranging from a minimum of 3°C (38°F) to an average of 13°C (56°F) and reaching a maximum of 23°C (73°F). June experiences less rainfall, approximately 55 mm (2.2 in) across 9 days, and lower humidity at 74%. For a more detailed comparison, you can refer to Umea weather in June.
In comparison to July, September experiences significantly cooler temperatures, with a minimum of 1°C (34°F) and an average of 11°C (51°F), compared to July's minimum of 8°C (46°F) and average of 16°C (61°F). The maximum temperature in September peaks at 19°C (66°F), while July can reach up to 26°C (80°F). Additionally, September sees more precipitation, totaling 85 mm (3.4 in) over 12 days, compared to July's 63 mm (2.5 in) over 11 days. Humidity levels are also higher in September at 88%, compared to July’s 80%. For a more detailed look at July’s weather specifics, visit Umea weather in July.
In comparing the weather between August and September, a notable drop in temperature is evident as September experiences a minimum of 1°C (34°F) and a maximum of 19°C (66°F), while August enjoys milder conditions with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 25°C (76°F). The average temperature in September is also lower at 11°C (51°F) compared to August's average of 15°C (59°F). Precipitation levels are somewhat similar, with September receiving 85 mm (3.4 in) of rain over 12 days, slightly more than August’s 77 mm (3.0 in) on the same number of days. Additionally, humidity is higher in September at 88%, compared to August's 82%. For more detailed information on August weather, visit Umea weather in August.
In September, temperatures in Umeå typically range from a minimum of 1°C (34°F) to a maximum of 19°C (66°F), with an average temperature of 11°C (51°F). The month experiences about 85 mm (3.4 in) of precipitation across 12 wet days and an overall humidity level of 88%. In contrast, October sees a significant drop in temperatures, with a minimum of -5°C (23°F), an average of 5°C (42°F), and a maximum of 14°C (58°F). Precipitation increases to 114 mm (4.5 in) over 17 days, accompanied by higher humidity at 92%. For a detailed overview of October weather in Umeå, you can visit Umea weather in October.
September and November present notable contrasts in weather conditions. In September, temperatures generally range from a mild 1°C (34°F) to a comfortable maximum of 19°C (66°F), with an average temperature of 11°C (51°F). Although precipitation is relatively high at 85 mm (3.4 in) over 12 days, the humidity is slightly lower at 88%. In stark contrast, November sees much colder temperatures, with a minimum of -16°C (4°F) and an average of just 1°C (34°F), only reaching up to 11°C (52°F). The month experiences slightly less precipitation at 79 mm (3.1 in) over 13 days, but humidity increases to 92%. For more detailed insights, you can check Umea weather in November.
In September, the weather is relatively mild with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 19°C (66°F), averaging around 11°C (51°F). The month experiences around 85 mm (3.4 in) of precipitation over 12 days, accompanied by a humidity level of 88%. In contrast, December sees a noticeable drop in temperatures, with lows plummeting to -16°C (4°F) and highs reaching only 6°C (44°F), averaging -2°C (29°F). Precipitation slightly increases to 91 mm (3.6 in) spread over 16 days, while humidity rises to 93%. For a more detailed look at the winter conditions, you can check Umea weather in December.
As September unfolds in Umeå, a noticeable shift in weather patterns marks the transition into autumn. Daytime temperatures, though still mild, gradually decline from the heights reached in summer, bringing a refreshing crispness to the air. The month is characterized by moderate rainfall, with about half of the days experiencing some precipitation, resulting in a humid atmosphere. This contrasts sharply with the more stable weather of summer months, as September prepares the landscape for the vibrant hues of fall. For a more in-depth look at Umeå's weather throughout the year, check out Umea Climate.