September Weather in Vaestervik, Sweden

Last updated: August 27, 2025

In Västervik, Sweden, September brings a charming blend of mild temperatures and refreshing moisture. With a maximum temperature of 24°C (75°F) and an average of 14°C (58°F), residents and visitors can enjoy comfortable days, while the minimum dips to a brisk 4°C (40°F) in the evenings. This month typically sees 60 mm (2.3 in) of rain spread over approximately 10 days, creating a lush, vibrant landscape, and contributing to a high humidity level of 81%. Embrace the beauty of early autumn as Västervik transitions into the cozy embrace of fall.

September Temperature in Vaestervik

In September, Västervik, Sweden begins its transition into autumn, marked by a noticeable shift in temperatures. With minimums averaging 4°C (40°F) and maximums reaching up to 24°C (75°F), the month is a delightful blend of lingering warmth and the crispness of early fall. The average temperature settles around 14°C (58°F), providing a comfortable backdrop for outdoor activities amidst the changing leaves. As summer's peak fades, residents can enjoy the mild sunshine while preparing for the cooler days that lie ahead, creating a picturesque atmosphere in this charming coastal town.

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

The chart illustrates September temperature patterns in Vaestervik, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vaestervik, 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).
JanFebMarAprMayJunJulAugSepOctNovDec353437425061646457494337
Data source: Temperature data for Vaestervik 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 Vaestervik

In September, Vaestervik experiences a notable transition, with precipitation reaching 60 mm (2.3 in) over about 10 days. This marks a slight decrease from the previous month, which saw 65 mm (2.6 in), yet aligns with the trend of heightened rainfall during the late summer and early autumn months. The consistent precipitation serves as a prelude to October, typically the wettest month, and complements the gradual shift in season, as the lush greens of summer fade into the more muted tones of fall. As the days grow shorter, the mild September rains contribute to the region’s rich tapestry of weather, nurturing the landscape in preparation for the cooler months ahead.

September Precipitation Trends in Vaestervik

The chart displays monthly precipitation patterns in Vaestervik, 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 Vaestervik, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec474846234242576560766065
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Vaestervik

As September arrives in Västervik, Sweden, the humidity levels experience a moderate uptick, settling at 81%. This shift marks a gradual transition from the drier conditions of summer, which peaked in July and August at 68% and 73%, respectively. Following the warmer months, September's humidity brings a hint of crispness to the air, heralding the onset of autumn. The trend shows a consistent pattern where humidity begins to rise again in the fall, ultimately reaching its peak in the winter months, with January and February showcasing high levels of 90% and 89%. Consequently, September serves as a bridge between the warm and cooler seasons, creating a unique atmospheric balance that Västervik residents experience as the days begin to shorten and temperatures cool.

September Average Humidity in Vaestervik

This chart illustrates the average monthly humidity levels in Vaestervik, 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 Vaestervik is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%88%82%72%68%68%73%81%87%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Vaestervik

As September arrives in Västervik, Sweden, the UV Index sees a slight dip to 4, indicating a moderate level of sun exposure. After the high indices of summer, with July and August recording peaks at 7, this month offers a more manageable burn time of about 30 minutes. While the days may still be pleasantly warm, it’s essential to remain cautious and protect your skin, as the UV intensity can still be significant. As we transition into autumn, you’ll notice a trending decrease in the UV Index, with October bringing it down to 2. To stay informed about UV levels, you can visit Vaestervik UV Index for updates and tips on sun safety.

Maximum UV Index Levels in Vaestervik for September

The chart shows the monthly maximum UV Index (UVI) for Vaestervik 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 Vaestervik typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123467764211
Data source: Vaestervik 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 Vaestervik

In September, Västervik enjoys a beautiful transition from summer to autumn, basking in 307 hours of sunlight. While this represents a drop from the sun-drenched peak of July, with its impressive 470 hours, September still delights with significantly more light than the winter months ahead. The gradual decline of daylight hours typically begins from the vibrant months of May and June, where sunshine reaches a splendid maximum, slowly tapering off as the year progresses. As the warmth of summer begins to fade, September offers a perfect balance of lingering light and cooling temperatures, making it an inviting time in Västervik for those who revel in the beauty of early autumn.

Monthly Sunshine Duration in Vaestervik: September Highlighted

The September sunshine duration represents the total number of hours Vaestervik 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.
JanFebMarAprMayJunJulAugSepOctNovDec88h165h268h370h439h467h470h412h307h238h129h99h
Data source: Vaestervik September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Vaestervik During September

In Vaestervik, Sweden, September marks a subtle transition as summer wanes into autumn. With a 34% chance of sunny weather, this month shows a decline from the brighter days of June and July, which boast 54% and 46% sunny probabilities, respectively. As August wraps up with a 41% likelihood of sunshine, September's weather indicates a shift towards more cloud cover and potential rain, aligning with the general trend of decreasing daylight and rising chill as the year progresses. While not the sunniest month, September still offers a fair mix of sunny intervals, perfect for enjoying the crisp air and scenic landscapes.

Percentage of Sunny Days in September in Vaestervik

The chart illustrates the percentage of sunny days in Vaestervik 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 Vaestervik experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%35%39%48%35%54%46%42%34%30%22%30%
Data source: Vaestervik September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Vaestervik in September

As the summer sun begins its retreat in Vaestervik, Sweden, September marks a noticeable shift in daylight, where the vibrant days of summer fade into the softer hues of autumn. With 12 hours of daylight, September offers a balanced blend of light, providing enough time for outdoor activities while hinting at the encroaching shorter days ahead. Following the peak of 17 hours seen in June and July, this month's light gradually diminishes, making way for October's more subdued 10 hours. This transition reflects the natural rhythm of the seasons, inviting residents to embrace the beauty of early autumn before the daylight dwindles further into winter's embrace.

Average Daylight Hours in Vaestervik for September

The chart illustrates the variation in daylight duration in Vaestervik throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 19m9h 24m11h 53m14h 24m16h 41m17h 57m17h 16m15h 10m12h 43m10h 13m7h 55m6h 37m
Data source: Vaestervik daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Vaestervik

In Vaestervik, Sweden, the September winds gently usher in the transition from summer to autumn, boasting an average speed of 5.1 m/s (11 mph). This slight increase from the summer lull, where winds dipped to a refreshing 3.7 m/s (8 mph) in June, signifies a gradual yet noticeable shift. As the year progresses, the winds tend to pick up again, moving towards October's brisk 5.6 m/s (13 mph). While September maintains a moderate breeze, it stands as a reminder of the colder months ahead, blending the lingering warmth of summer with the crispness of autumn. It's a time when the air carries the scent of change, making every breath a dance between seasons.

Average September Wind Speed in Vaestervik

The chart displays monthly wind speed patterns in Vaestervik, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.55.75.35.13.93.74.34.95.1 m/s5.65.55.7
Data source: Vaestervik September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Vaestervik Compares to Other Months

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

In September, temperatures in Vaestervik are mild, ranging from a minimum of 4°C (40°F) to a maximum of 24°C (75°F), with an average of 14°C (58°F). The month experiences about 60 mm (2.3 in) of precipitation across 10 days, and humidity levels hover around 81%. In contrast, January brings a stark change, with much colder temperatures ranging from -13°C (9°F) to a max of 10°C (51°F) and an average of just 2°C (35°F). Precipitation decreases slightly to 47 mm (1.9 in) over the same number of days, but humidity rises to 90%. For more details on the January weather, you can visit Vaestervik weather in January.

When comparing the weather in September and February, notable differences emerge. September typically experiences milder temperatures, with averages around 14°C (58°F) and maximums reaching 24°C (75°F), while February is much colder, averaging just 1°C (34°F) and peaking at only 11°C (52°F). Precipitation levels are somewhat similar, with September receiving 60 mm (2.3 in) over 10 days and February getting 48 mm (1.9 in) across 13 days, yet February often feels wetter due to higher humidity at 89% compared to September's 81%. For more specifics on February weather patterns, you can check Vaestervik weather in February.

When comparing the weather in September and March, notable differences emerge. September boasts a milder climate with average temperatures ranging from 4°C (40°F) to a comfortable maximum of 24°C (75°F), while March experiences much colder conditions, where temperatures typically range from -9°C (17°F) to a maximum of 15°C (59°F). Although September sees slightly more precipitation at 60 mm (2.3 in) over 10 days, March has a comparable precipitation level of 46 mm (1.8 in) spread over 11 days, along with higher humidity at 88% compared to September's 81%. For a detailed look at March weather specifics, refer to Vaestervik weather in March.

September and April present distinct variations in weather patterns. In September, temperatures range from a minimum of 4°C (40°F) to a maximum of 24°C (75°F), with an average of 14°C (58°F). The month experiences greater precipitation at 60 mm (2.3 in) over approximately 10 days, coupled with a humidity level of 81%. In contrast, April features a cooler climate, with temperatures dipping to a minimum of -4°C (26°F) and peaking at 19°C (66°F) for an average of 5°C (42°F). The rainfall in April is significantly lower at 23 mm (0.9 in) across 6 days, while humidity remains slightly higher at 82%. For more detailed information, you can check Vaestervik weather in April.

In comparing the weather of September and May, September features a more moderate temperature range, with a minimum of 4°C (40°F) and a maximum of 24°C (75°F), averaging 14°C (58°F). While September experiences slightly higher precipitation at 60 mm (2.3 in) over about 10 days, humidity levels are also elevated at 81%. In contrast, May presents cooler conditions, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 25°C (77°F) and an average of 10°C (50°F). May boasts lower precipitation at 42 mm (1.7 in) over approximately 9 days and a more comfortable humidity level of 72%. For more detailed insights into May weather, you can visit Vaestervik weather in May.

In comparing the weather between September and June, we can observe some notable differences. September tends to have lower average temperatures, with a minimum of 4°C (40°F) and a maximum of 24°C (75°F), compared to June, which has a minimum of 8°C (46°F) and a maximum of 27°C (80°F). Additionally, September experiences higher humidity at 81%, while June is more comfortable at 68%. Precipitation is also greater in September, with 60 mm (2.3 in) over 10 days, as opposed to June's 42 mm (1.6 in) over 8 days. For more detailed information about June weather, you can visit Vaestervik weather in June.

In comparing the weather between September and July, we see distinct differences in temperature and humidity. September experiences cooler temperatures, with a minimum of 4°C (40°F) and an average of 14°C (58°F), while July enjoys milder conditions, starting at a minimum of 10°C (50°F) and averaging 18°C (65°F). The maximum temperatures also reflect this difference, reaching 24°C (75°F) in September compared to 27°C (81°F) in July. Both months see similar precipitation levels, with September slightly wetter at 60 mm (2.3 in) over 10 days, while July has 57 mm (2.3 in) over 9 days. Additionally, September has a higher humidity at 81%, making it feel more damp compared to the 68% humidity typically found in July. For more detailed information on July weather patterns, you can visit Vaestervik weather in July.

In comparing the weather between September and August, we see a notable drop in temperatures. September experiences a minimum temperature of 4°C (40°F), an average of 14°C (58°F), and a maximum of 24°C (75°F), while August boasts a more temperate range with a minimum of 10°C (50°F), an average of 18°C (64°F), and a high of 28°C (83°F). Rainfall is slightly less in September, totaling 60 mm (2.3 in) over 10 days, compared to August's 65 mm (2.6 in) over 11 days. Additionally, September is more humid at 81% compared to August's 73%. For further details on August weather, you can refer to Vaestervik weather in August.

In September, the weather typically features milder temperatures with a minimum of 4°C (40°F) and a maximum of 24°C (75°F), averaging around 14°C (58°F). The month experiences about 60 mm (2.3 in) of precipitation spread across 10 days, accompanied by a humidity level of 81%. In contrast, October brings a noticeable drop in temperatures, with minimums reaching 1°C (34°F) and maximums peaking at 17°C (63°F), averaging only 10°C (50°F). This month also sees an increase in rainfall, totaling 76 mm (3.0 in) over 14 days, alongside a higher humidity of 87%. For a more detailed look at October weather, you can check out Vaestervik weather in October.

September and November present contrasting weather patterns, despite similar levels of precipitation. In September, temperatures range from a mild 4°C (40°F) to a pleasant maximum of 24°C (75°F), offering moderate conditions with an average of 14°C (58°F). However, humidity sits at a relatively high 81%, contributing to a slightly heavier atmosphere. In contrast, November sees a significant drop in temperatures, with minimums plunging to -5°C (24°F) and an average of just 6°C (43°F), peaking at a maximum of 15°C (60°F). This month experiences more frequent rain, with precipitation occurring over 14 days, leading to a higher humidity of 89%. For a detailed look at the conditions during this time, you can check out Vaestervik weather in November.

September and December present contrasting weather patterns. In September, temperatures range from a mild minimum of 4°C (40°F) to a pleasant maximum of 24°C (75°F), with an average of 14°C (58°F). The month experiences around 60 mm (2.3 in) of precipitation over approximately 10 days, accompanied by a humidity level of 81%. In stark contrast, December plunges into much colder conditions, with a minimum temperature of -10°C (15°F) and a maximum of only 10°C (50°F), averaging just 3°C (37°F). Precipitation increases slightly to 65 mm (2.6 in) over about 14 days, while humidity rises to 88%. For a detailed look at December weather, check out Vaestervik weather in December.

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Conclusion: What to Expect From September Weather in Vaestervik

As September unfolds in Västervik, it marks a shift in the weather landscape, blending the warmth of summer with the crispness of autumn. The temperatures gradually decline, offering a pleasant, cool average that invites outdoor exploration amidst the changing foliage. While the month sees a moderate amount of rainfall, the humidity levels remain high, enhancing the freshness in the air. Compared to the peak summer months, September presents a more balanced, refreshing experience, making it an ideal time for capturing the beauty of the region. For a deeper insight into what to expect throughout the year, visit Vaestervik Climate.