Last updated: August 27, 2025
September in Solna, Sweden, presents a vibrant transition into autumn, showcasing a maximum temperature of 25°C (77°F), while hovering around a comfortable average of 13°C (55°F). This month can also bring a noticeable chill, with temperatures dipping to a minimum of 0°C (33°F). Rainfall is moderate, with 50 mm (2.0 in) of precipitation spread over approximately 9 days, contributing to the lush greenery of the season. Combined with an 85% humidity, the air feels crisp and invigorating, making September a delightful time to explore the beauty of Solna.
As September unfolds in Solna, Sweden, the warm embrace of summer begins to fade, making way for cooler autumnal days. Temperatures during this month range from a minimum of 0°C (33°F) to a comfortable maximum of 25°C (77°F), with an average of 13°C (55°F) that invites outdoor exploration. While mornings may still hold onto a whisper of summer warmth, cooler evenings signal the changing season. This month strikes a charming balance, transitioning smoothly from the intense heat of August into the briskness of October, showcasing nature's cycle and preparing the landscape for the vibrant hues of fall.
In September, Solna, Sweden, experiences a moderate precipitation amount of 50 mm (2.0 in), falling slightly below the preceding month of August, which recorded 67 mm (2.6 in). This drop aligns with a decrease in precipitation days, with rainfall occurring on 9 days, providing a transition into the autumn season. Interestingly, September’s total is on par with the earlier months of January to April, where rainfall remains relatively consistent, hinting at a steady hydrological pattern as the year progresses. This month continues to showcase the characteristic wet climate of the region, setting the stage for the wetter conditions expected to follow in October.
As summer gives way to autumn, September in Solna, Sweden, sees a noticeable shift in humidity, rising to 85%. This increase marks a return to the higher levels experienced earlier in the year, with January and February holding steady at around 90%. After the drier months of July and June, where humidity levels dipped to 74% and 76%, September's humidity serves as a gentle reminder of the transitional season. With levels gradually creeping back up, the air becomes richer and more invigorating, setting the stage for the crisp days of October, which again sees humidity rise to 89%. This fluctuation reflects the natural ebb and flow of the seasons, highlighting the moody charm of Solna's climate.
As September rolls into Solna, Sweden, the UV Index begins to reflect a gentle decline from the peak summer levels. With a UV Index of 4, this month falls into the moderate exposure category, suggesting that while sun protection is advisable, it's far less critical than during the sun-drenched months of June and July. The burn time for unprotected skin is approximately 30 minutes, providing a comfortable window for outdoor activities while still emphasizing the importance of sunscreen. This trend of gradually decreasing UV levels heralds the arrival of fall, paving the way for the cooler months ahead. For more detailed information on UV levels throughout the year, visit Solna UV Index.
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In September, Solna, Sweden, enjoys a delightful transition as summer gradually gives way to autumn. With 309 hours of sunshine, the month marks a notable dip from the vibrant peak of 487 hours in July, yet it still holds onto the warmth of late summer days. The brightness begins to soften, echoing the gentle progression from the lush greens of August to the crisp hues of fall. Compared to earlier months, September embraces a balance of light, offering a perfect backdrop for outdoor activities to savor the last remaining rays before the days shorten further in October. This gradual shift highlights not just a decrease in hours, but a subtle transformation of the season, inviting Solna residents to relish the beauty of change.
In Solna, Sweden, September marks a noticeable drop in sunny weather, with only a 26% chance of sunshine. This decline follows a peak in the summer months, where July and June enjoy the highest probabilities of clear skies at 55% and 52%, respectively. As the summer fades, the sun tends to shy away, making September's weather a softer transition into the cooler autumn months. While it’s a departure from the sun-kissed days of July, the 26% chance remains a hint of what was, suggesting occasional sunny moments amidst the emerging fall colors. Overall, September offers a blend of lingering warmth and an increasing embrace of autumn, presenting a unique, albeit less sunny, charm.
As September unfolds in Solna, Sweden, residents experience a transition marked by 12 hours of daylight, a gentle decline from the summer's exuberance, where June shines with an impressive 18 hours. This month serves as a bridge between the lush, bright days of summer and the shorter, more subdued daylight hours of autumn. Following the longer spells of sunshine in May and June, the gradual decrease continues into October, which offers just 10 hours of light. Notably, September still enjoys a significant amount of daylight compared to the darker months that lie ahead, such as November's mere 7 hours. This rhythmic ebb and flow of daylight not only influences daily activities but also invites reflective moments as the vibrant colors of the season begin to emerge.
As September arrives in Solna, Sweden, the gentle breeze begins to pick up, with an average wind speed of 3.8 m/s (9 mph), signaling a shift towards the more dynamic weather patterns of autumn. Though slightly lower than the winds of October, which boast speeds of 4.6 m/s (10 mph), September's winds are a refreshing reminder of the summer's fading warmth. This month serves as a transitional period; the winds gradually strengthen from the calmer summers reflected in June's 2.8 m/s (6 mph), while maintaining a steady pace that invites outdoor explorations. Notably, the average wind speed peaks in the autumn months, highlighting a climactic shift in Solna's atmospheric rhythm as the seasons change.
Weather in Solna varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Solna, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures in Solna range from a chilly minimum of 0°C (33°F) to a pleasant maximum of 25°C (77°F), with an average temperature of 13°C (55°F). The month experiences about 50 mm (2.0 in) of precipitation over 9 days, accompanied by a high humidity level of 85%. In contrast, January brings significantly colder conditions, with temperatures ranging from a minimum of -18°C (-1°F) to a maximum of 10°C (51°F), averaging around 0°C (32°F). This month sees slightly less precipitation, at 38 mm (1.5 in) over 8 days, but humidity remains high at 90%. For more details on January weather, you can refer to Solna weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a minimum of 0°C (33°F) to a maximum of 25°C (77°F), offering a milder average of 13°C (55°F), while February sees much colder temperatures with a minimum of -14°C (7°F) and a maximum of 11°C (53°F), averaging around -1°C (31°F). Precipitation is slightly higher in September at 50 mm (2.0 in) over 9 days, compared to 34 mm (1.3 in) over 8 days in February, and humidity levels are higher in February at 88%, compared to 85% in September. For more details on February weather, visit Solna weather in February.
September and March present contrasting weather conditions. In September, temperatures range from a chilly 0°C (33°F) at night to a pleasant 25°C (77°F) during the day, with an average of 13°C (55°F). This month experiences about 50 mm (2.0 in) of precipitation over approximately 9 days and has a high humidity level of 85%. In contrast, March sees cooler temperatures, with a minimum of -13°C (10°F), averaging just 2°C (35°F), and peaking at 17°C (64°F). It has slightly less precipitation at 43 mm (1.7 in) over 8 days and a marginally higher humidity level of 89%. For more detailed information, you can check out Solna weather in March.
September offers a milder climate compared to April, with daytime temperatures averaging around 13°C (55°F) and reaching a maximum of 25°C (77°F). In contrast, April sees cooler temperatures, starting at a minimum of -8°C (18°F) and averaging just 5°C (41°F). While both months experience similar humidity levels at 85%, September tends to be wetter, with 50 mm (2.0 in) of precipitation over approximately 9 days, compared to April's 25 mm (1.0 in) over 7 days. For a more detailed look at April's weather specifics, check out Solna weather in April.
Comparing the weather in September and May reveals some interesting differences. September tends to be warmer, with average temperatures reaching 13°C (55°F) and maximums peaking at 25°C (77°F). In contrast, May starts off cooler, with average temperatures around 10°C (50°F) but can also see maximums of 25°C (78°F). Both months experience similar precipitation levels, with September receiving about 50 mm (2.0 in) over 9 days and May slightly more at 52 mm (2.1 in) over 11 days. Additionally, September has higher humidity at 85%, compared to May's 77%. For a more detailed look at May weather specifically, check Solna weather in May.
September and June present distinct weather patterns, despite their proximity in the calendar year. In September, temperatures range from a chilly 0°C (33°F) at night to a pleasant 25°C (77°F) during the day, with an average of 13°C (55°F). The month sees approximately 50 mm (2.0 in) of precipitation over 9 days, accompanied by high humidity levels at 85%. In contrast, June offers warmer conditions with minimum temperatures of 5°C (42°F) and maximums reaching 27°C (81°F), averaging 16°C (61°F). Rainfall in June is slightly lower at 49 mm (1.9 in) over just 8 days, along with lower humidity at 76%. For more detailed information about June weather, you can check Solna weather in June. Overall, June tends to be warmer and drier compared to the cooler, more humid September.
September weather in Solna typically sees a cooler temperature range compared to July, with minimums dipping to around 0°C (33°F) and maximums reaching 25°C (77°F). In contrast, July boasts a warmer climate, with temperatures ranging from a minimum of 8°C (47°F) to a peak of 29°C (85°F). While both months experience similar levels of precipitation, with around 50-55 mm (2.0-2.2 in) over 9 days, September's higher humidity at 85% contributes to a more muggy atmosphere. For a detailed look at July weather patterns, visit Solna weather in July.
In comparing the weather of September and August, September experiences cooler temperatures, with a minimum of 0°C (33°F) and an average of 13°C (55°F), while August remains warmer, featuring a minimum of 5°C (41°F) and an average of 17°C (63°F). Additionally, August has higher maximum temperatures, reaching up to 29°C (85°F), compared to September's peak of 25°C (77°F). While both months receive significant rainfall, August records more precipitation at 67 mm (2.6 in) over 12 days, versus September's 50 mm (2.0 in) over 9 days. Notably, September also shows higher humidity levels at 85%, compared to August's 77%. For more details on the weather in August, you can visit Solna weather in August.
In September, the weather features a milder temperature range, with minimums around 0°C (33°F) and maximums reaching up to 25°C (77°F), leading to an average temperature of 13°C (55°F). The month experiences about 50 mm (2.0 in) of precipitation over 9 days, accompanied by a humidity level of 85%. In contrast, October sees a notable drop in temperatures, with minimums plummeting to -3°C (27°F) and maximums only reaching 17°C (63°F), resulting in an average of 8°C (47°F). This cooler month records increased precipitation of 65 mm (2.6 in) across 12 days, while humidity rises slightly to 89%. For more detailed information on October weather patterns, check out Solna weather in October.
September weather presents a milder transition into autumn, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 25°C (77°F), and an average of 13°C (55°F). It experiences more moderate precipitation at 50 mm (2.0 in) over approximately 9 days and humidity levels around 85%. In contrast, November brings a pronounced chill, featuring a stark range from a minimum of -11°C (13°F) to a maximum of 14°C (58°F), with an average temperature significantly dropping to 4°C (40°F). While the precipitation decreases slightly to 43 mm (1.7 in) over the same 9 days, humidity rises to 90%, contributing to the colder, more biting feel of the month. For more detailed weather insights, you can check Solna weather in November.
In September, temperatures in Solna range from a minimum of 0°C (33°F) to a pleasant maximum of 25°C (77°F), with an average of 13°C (55°F). The month experiences about 50 mm (2.0 in) of precipitation over approximately 9 days, and humidity levels hover around 85%. In contrast, December brings a much colder climate, with temperatures dipping as low as -15°C (6°F) and averaging just 1°C (34°F), peaking at 9°C (49°F). This winter month sees a slight increase in precipitation to 61 mm (2.4 in) over about 14 days, with humidity rising to 87%. For more detailed information on December weather, you can visit Solna weather in December.
As September unfolds in Solna, the transition from summer to autumn becomes evident, offering a unique blend of mild temperatures and heightened humidity. While the maximum temperature can still reach a pleasant 25°C (77°F), the average cools to a more refreshing 13°C (55°F), inviting residents to embrace cozy layers. With about nine days of rain contributing to a total of 50 mm, this month introduces a distinct rhythm, contrasting sharply with the drier, warmer summer months. September's lush atmosphere and vibrant foliage provide a stunning backdrop for outdoor activities, making it a delightful time to explore the beauty of Solna. For deeper insights into the city's seasonal variations, check out Solna Climate.