September Weather in Lund, Sweden

Last updated: August 27, 2025

September in Lund, Sweden showcases a delightful transition towards autumn, with temperatures ranging from a pleasant maximum of 26°C (79°F) to a cool minimum of 2°C (35°F). The month brings an average temperature of 14°C (57°F), making it ideal for outdoor activities. However, expect a bit of moisture in the air, with precipitation amounting to 69 mm (2.7 in) over 12 days, accompanied by a humidity level of 82%. Whether you're exploring the city's rich history or enjoying the scenic beauty, September offers a unique charm that captures the essence of changing seasons.

September Temperature in Lund

In September, Lund, Sweden, begins to transition from the warmth of summer to the crispness of autumn. The average temperature settles at a pleasant 14°C (57°F), while daytime highs can reach a comfortable 26°C (79°F), perfect for enjoying the lingering outdoor activities. As the month progresses, the nights draw in, with lows dipping to 2°C (35°F), signaling the approach of colder months ahead. This shift in temperatures showcases the gradual descent into fall, offering a refreshing change from the warmer summer months, while still providing plenty of opportunities to bask in the mild sun of early autumn.

September Weather in Lund: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Lund, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lund, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec353538445262636357504337
Data source: Temperature data for Lund generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Lund

In September, Lund, Sweden, experiences a noticeable transition in weather as autumn approaches, marked by an average precipitation of 69 mm (2.7 in) spread over 12 days. This uptick in rainfall follows a relatively wet August, which recorded the highest monthly rainfall of the year at 85 mm (3.3 in). September's precipitation contributes to a cumulative pattern observed from the summer months, where rainfall peaks in late summer before gradually receding into autumn. The drizzle-laden days not only prepare the landscape for the upcoming cooler months but also enrich the soil, setting a vibrant backdrop for the changing seasons. As the month unfolds, the frequency of rain establishes a rhythm indicative of fall, making September a pivotal month in Lund's weather narrative.

September Precipitation Trends in Lund

The chart displays monthly precipitation patterns in Lund, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Lund, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec505567365752818569834461
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lund

As summer fades into autumn, September in Lund, Sweden, experiences a slight uptick in humidity, measuring 82%. This marks a modest increase from the balmy summer months, with July and August both hovering around 82% and 80%, respectively. Despite the shift towards cooler temperatures and the impending change of season, September maintains a relatively stable humidity level compared to earlier months. The gradual decline that started in late spring, moving from 87% in March to 81% in June, seems to stabilize as the region welcomes fall. This consistency hints at the transitional nature of September, bridging the warmth of summer with the crispness of autumn, setting the stage for the slightly higher humidity levels expected in October.

September Average Humidity in Lund

This chart illustrates the average monthly humidity levels in Lund, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Lund is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%88%87%85%82%81%82%80%82%85%85%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lund

As summer gives way to autumn in Lund, Sweden, the September UV Index settles at 5, indicating a moderate exposure category that encourages caution during outdoor activities. After the high levels of UV radiation experienced in June and July, where the index peaked at 7, September reflects a gradual decline, yet still demands vigilance with a burn time of just 30 minutes. This trend showcases the transition from more intense sun exposure to a more manageable level, making it essential to keep sunscreen handy as you enjoy the early fall scenery. For more details on UV levels throughout the year, visit Lund UV Index.

Maximum UV Index Levels in Lund for September

The chart shows the monthly maximum UV Index (UVI) for Lund in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Lund typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567765311
Data source: Lund September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Lund

As September arrives in Lund, Sweden, the transition from summer to autumn is marked by a notable decrease in sunlight, with the city basking in 319 hours of radiant sunshine. While this month sees a dip compared to the sun-drenched peak of June and July, which boast over 450 hours, September's light still carries a warm glow, hinting at the lingering vibes of summer. This gradual waning of daylight sets the stage for autumn's cozy embrace, contrasting sharply with the low points of January and December, where sunshine barely breaks 100 hours. Lundians can relish those golden September days, a perfect blend of warmth and cool breezes, before the darker months set in.

Monthly Sunshine Duration in Lund: September Highlighted

The September sunshine duration represents the total number of hours Lund experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec99h188h261h373h433h458h453h408h319h246h145h110h
Data source: Lund September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Lund During September

In September, Lund experiences a 29% chance of sunny weather, marking a slight dip from the summer months. As the season transitions from the warmth of August, with its 35% likelihood of sunshine, the shorter days of fall begin to set in. This trend illustrates a gradual decline in sunny days as the year progresses, with October further reducing the chances to 26%. Interestingly, April, with its 50% chance, remains the standout month for sun, suggesting that while September offers some brightness, it signals the approaching dimmer autumn days. As outdoor enthusiasts look to soak up the last rays of summer, September serves as a gentle reminder of the season's retreat.

Percentage of Sunny Days in September in Lund

The chart illustrates the percentage of sunny days in Lund throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Lund experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%33%32%50%31%44%33%35%29%26%13%19%
Data source: Lund September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Lund in September

As September unfolds in Lund, Sweden, the daylight duration transitions to a cozy 12 hours, marking a gentle shift from the prolonged sunlight of summer. This month acts as a bridge, signaling the end of long, bright days; after basking in 17 hours of daylight in June, the gradual tapering highlights a return to the shorter days of autumn. Following a vibrant summer, where daylight peaked in July, the sun begins to retreat, leading into October's 10 hours of light. The trend reflects nature's rhythm, as daylight diminishes again towards winter, inviting the charm of darker evenings while still celebrating the lingering warmth of early fall.

Average Daylight Hours in Lund for September

The chart illustrates the variation in daylight duration in Lund throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 43m9h 37m11h 53m14h 13m16h 17m17h 25m16h 48m14h 55m12h 40m10h 22m8h 15m7h 6m
Data source: Lund daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Lund

As September unfolds in Lund, Sweden, the average wind speed gently dips to 3.7 m/s (8 mph), reflecting the transition into autumn. This marks a subtle decrease from the summer winds of August, which average 4.1 m/s (9 mph). Interestingly, this month’s breezy conditions pave the way for a shift, as winds pick up again in October, reaching 4.5 m/s (10 mph). The overall trend suggests that while the gusts may soften in September, they herald a return to stronger winds in the upcoming months, creating a dynamic atmosphere that echoes the changing seasons in this picturesque locale.

Average September Wind Speed in Lund

The chart displays monthly wind speed patterns in Lund, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.04.24.24.43.83.53.54.13.7 m/s4.54.33.9
Data source: Lund September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Lund Compares to Other Months

Weather in Lund varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lund, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January present contrasting weather patterns. In September, temperatures range from a chilly 2°C (35°F) at night to a pleasant 26°C (79°F) during the day, with an average of 14°C (57°F). This month also sees 69 mm (2.7 in) of precipitation over 12 days, along with relatively high humidity at 82%. In contrast, January brings much colder conditions, with temperatures dipping as low as -14°C (6°F) and peaking at just 11°C (51°F), averaging around 2°C (36°F). Precipitation is slightly lower at 50 mm (2.0 in) spread over 11 days, while humidity rises to 87%. For detailed weather specifics, you can check Lund weather in January.

September and February present contrasting weather patterns, reflecting the transition from late summer to winter. In September, temperatures range from a mild 2°C (35°F) at night to a comfortable 26°C (79°F) during the day, with an average of 14°C (57°F). The month experiences a relatively high humidity of 82% and approximately 69 mm (2.7 in) of precipitation over 12 days. In stark contrast, February delivers much colder conditions, with temperatures dropping to a minimum of -15°C (6°F) and peaking at 14°C (57°F), averaging just around 2°C (35°F). The month’s precipitation is slightly lower at 55 mm (2.2 in) spread over 11 days, accompanied by even higher humidity at 88%. This link offers more details about Lund weather in February for those interested in exploring February's conditions further.

When comparing the weather in September and March, notable differences emerge. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 26°C (79°F), with an average of 14°C (57°F). This month also experiences relatively high humidity at 82% and sees about 69 mm (2.7 in) of precipitation over 12 days. In contrast, March presents a much cooler climate, with temperatures varying from a chilly -11°C (13°F) to a milder 16°C (62°F), averaging 3°C (38°F). While precipitation is slightly lower at 67 mm (2.6 in), it is spread over 14 days, resulting in a humidity level of 87%. Overall, September offers a warmer and more temperate experience, while March is characterized by its cold and damp conditions. For more specific details, you can check Lund weather in March.

September and April present contrasting weather patterns, each with its unique characteristics. In September, temperatures range from a minimum of 2°C (35°F) to a comfortable maximum of 26°C (79°F), with an average of 14°C (57°F). The month experiences about 69 mm of precipitation over 12 days, accompanied by a humidity level of 82%. In contrast, April features a chillier temperature spectrum, starting from a minimum of -6°C (21°F) and averaging 7°C (44°F), while peaking at 23°C (73°F). Additionally, April witnesses less precipitation at 36 mm over just 7 days, and slightly higher humidity at 85%. For more detailed insights into April's climate, you can refer to Lund weather in April.

When comparing the weather in September to that in May, we observe some notable differences. September typically experiences higher average temperatures, ranging from a minimum of 2°C (35°F) to a maximum of 26°C (79°F), while May tends to be cooler, with temperatures dipping to a minimum of -3°C (27°F) and peaking at 27°C (80°F). Despite having a similar average humidity of 82% and experiencing precipitation on approximately 12 days, September sees slightly more rainfall at 69 mm (2.7 in) compared to May's 57 mm (2.3 in). For a more detailed look at May weather, you can check out Lund weather in May.

In September, the weather presents a notable transition as temperatures range from a chilly minimum of 2°C (35°F) to a maximum of 26°C (79°F), averaging around 14°C (57°F). The month experiences about 69 mm (2.7 in) of precipitation spread over 12 days, with humidity levels reaching 82%. In contrast, June offers warmer conditions, with minimum temperatures starting at 7°C (44°F) and peaking at 30°C (86°F), leading to an average of 17°C (62°F). It sees less rainfall, with 51 mm (2.0 in) over just 8 days, while humidity remains relatively similar at 81%. For more detailed insights on weather conditions, you can check Lund weather in June. Overall, June is characterized by warmer temperatures and less frequent rain compared to the cooler and wetter September.

In comparing the weather between July and September, July tends to be warmer with a minimum temperature of 7°C (45°F) and an average high of 31°C (88°F), while September cools down significantly, starting with a minimum of just 2°C (35°F) and averaging a high of 26°C (79°F). Although both months experience high humidity levels of 82%, July has slightly more precipitation, totaling 81 mm (3.2 in) over 13 days compared to September's 69 mm (2.7 in) over 12 days. For more details on July weather, you can check Lund weather in July.

In comparing the weather between September and August, it's clear that September generally features cooler temperatures, with a minimum of 2°C (35°F) compared to August's minimum of 5°C (41°F). The average temperature drops from 17°C (63°F) in August to 14°C (57°F) in September, while the maximum temperature also sees a decline from 30°C (87°F) to 26°C (79°F). Precipitation levels are slightly lower in September at 69 mm (2.7 in), though it remains spread across 12 days, compared to August's 85 mm (3.3 in) over 14 days. Notably, humidity remains relatively high in both months, with September at 82% and August at 80%. For more details on August's weather, you can visit Lund weather in August.

In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 26°C (79°F), with an average of 14°C (57°F). The month sees about 69 mm (2.7 in) of precipitation over 12 days and maintains a humidity level of 82%. In contrast, October brings cooler conditions, with temperatures dropping to a minimum of -4°C (25°F) and an average of 10°C (50°F), peaking at 21°C (69°F). Precipitation increases slightly to 83 mm (3.3 in) over 15 days, leading to a marginal rise in humidity to 85%. For more detailed information about October weather, visit Lund weather in October.

In September, the weather typically features a more temperate climate with average temperatures reaching 14°C (57°F) and maximum highs around 26°C (79°F). The month experiences about 69 mm (2.7 in) of precipitation over 12 days, accompanied by a relatively high humidity level of 82%. In contrast, November sees a significant drop in temperatures, with an average of 6°C (43°F) and maximums peaking at 17°C (62°F). The month is drier, with only 44 mm (1.7 in) of precipitation spread over the same number of days, while the humidity slightly increases to 85%. For more detailed insights, you can check out Lund weather in November.

September and December exhibit distinct differences in weather patterns. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 26°C (79°F), with an average of 14°C (57°F). The month sees some precipitation totaling 69 mm (2.7 in) across approximately 12 days, and humidity is relatively high at 82%. In contrast, December experiences much colder conditions, with temperatures dropping to a minimum of -10°C (14°F) and peaking at just 10°C (50°F), averaging around 3°C (38°F). Although precipitation is slightly lower at 61 mm (2.4 in), it falls on 13 days, and humidity rises to 85%. For more details on the December climate, you can refer to Lund weather in December.

Compare Lund's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Lund

As September unfolds in Lund, it presents a unique blend of moderate warmth and early autumn chill that sets it apart from the summer months. While daytime temperatures can still reach a pleasant 26°C, the evenings hint at the approaching cooler season, with lows dipping to around 2°C. This month is also characterized by a notable increase in humidity, averaging 82%, and a touch more precipitation, with about half of the month experiencing light rain. As nature begins its vibrant transition, September serves as a reminder of the changing seasons. For a comprehensive view of what to expect in Lund throughout the year, be sure to check out Lund Climate.