September Weather in Bastad, Sweden

Last updated: August 27, 2025

September in Bastad, Sweden is marked by a delightful blend of mild temperatures and frequent rainfall. With a maximum reaching 25°C (78°F) and an average around 14°C (58°F), the weather is pleasantly warm, while the minimum dips to 5°C (41°F) during cooler nights. However, be prepared for the 82% humidity and 97 mm (3.8 in) of precipitation spread over 16 days, creating a lush and vibrant atmosphere. This month provides a unique opportunity to experience the rich beauty of Bastad’s landscapes, even amidst the occasional shower.

September Temperature in Bastad

As September rolls into Båstad, Sweden, the temperatures begin to reflect the transition from summer to autumn. With minimums settling around 5°C (41°F), the days are pleasantly mild, showcasing an average temperature of 14°C (58°F), which is inviting for outdoor activities. The maximums, reaching up to 25°C (78°F), serve as a warm farewell to the summer sun, creating a comfortable ambience for seaside strolls or late-season picnics. This month marks a significant dip from the sweltering heights of July and August, yet it holds onto a hint of summer’s warmth, making it an enchanting time to experience the beauty of Båstad before the cooler months set in.

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

The chart illustrates September temperature patterns in Bastad, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bastad, 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).
JanFebMarAprMayJunJulAugSepOctNovDec363538445362646357504438
Data source: Temperature data for Bastad 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 Bastad

September in Båstad, Sweden, ushers in a continuation of the summer's wetness, with precipitation totaling 97 mm (3.8 in) over 16 rainy days. This amount mirrors the heavy showers of August but marks a slight decline from the peak months of summer. The consistent rainfall sets the tone for the transition into autumn, as temperatures drop and the landscape begins to shift. With a blend of lingering warmth and the onset of cooler weather, September's precipitation plays a crucial role in nourishing the region’s natural beauty, preparing it for the colorful transformation of fall.

September Precipitation Trends in Bastad

The chart displays monthly precipitation patterns in Bastad, 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 Bastad, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec60656839695497119971137082
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bastad

In Bastad, Sweden, September marks a noticeable shift in humidity levels, rising to 82% from the lower summer averages of 65%-71%. This increase suggests a transitional phase as autumn approaches, bringing a touch of moisture back into the air after the drier months of June and July. As the year progresses, humidity starts high at 92% in January and February, gradually decreasing to its summer lows. Following September, humidity climbs again into the cooler months, reaching 90% in October and back to 92% by November, creating a rhythmic dance of moisture that defines the coastal climate. Thus, September serves as a pivotal bridge between the dry summer and the humid, crisp air of fall in Bastad.

September Average Humidity in Bastad

This chart illustrates the average monthly humidity levels in Bastad, 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 Bastad is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%91%89%82%70%65%65%71%82%90%92%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bastad

As summer fades in Båstad, Sweden, September brings a moderate UV Index of 5, encouraging outdoor enjoyment while reminding us to be sun-smart. The burn time for fair skin decreases slightly to 30 minutes, reflecting the transitional season, where UV exposure remains significant. Following the peak summer months, July and August, with their high UV Index levels, September marks a gentle decline, yet the need for sun protection persists, especially during midday hours. As you revel in autumn activities, keep an eye on the UV levels and enjoy the crisp, sunny days! For more details, visit Bastad UV Index.

Maximum UV Index Levels in Bastad for September

The chart shows the monthly maximum UV Index (UVI) for Bastad 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 Bastad typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567765311
Data source: Bastad 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 Bastad

As summer gives way to autumn, September in Båstad, Sweden, continues to bask in a pleasing glow, boasting 306 hours of sunshine. This month marks a significant transition, with sunlight gradually tapering off from the peak of 457 hours in June and 453 hours in July. While the days are shorter compared to the vibrant summer months, September's sunshine still outshines the more subdued light of early spring and winter, showcasing the tail end of Sweden’s warm climate. As the sun dips lower in the sky, it sets the stage for the rich autumn colors, making September a perfect time to experience the beauty and tranquility that Båstad has to offer before the cold sets in.

Monthly Sunshine Duration in Bastad: September Highlighted

The September sunshine duration represents the total number of hours Bastad 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.
JanFebMarAprMayJunJulAugSepOctNovDec92h180h257h377h432h457h453h407h306h241h143h106h
Data source: Bastad September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bastad During September

In September, Bastad, Sweden, experiences a 29% chance of sunny weather, continuing a downward trend as summer fades into autumn. After the peaks of April's 54% and June's 46%, there's a noticeable decline, as August brings a slightly elevated 38% before the cooler months set in. Despite this reduction in sunshine, September still offers a gentle transition, where you might catch glimpses of lingering warmth, making it a beautiful time to enjoy the scenic coastal views, even if the sun isn't guaranteed to shine. As the year progresses toward winter, the likelihood of clear skies diminishes further, with October dropping to 27%.

Percentage of Sunny Days in September in Bastad

The chart illustrates the percentage of sunny days in Bastad 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 Bastad experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%36%34%54%30%46%37%38%29%27%15%22%
Data source: Bastad September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bastad in September

As summer begins to wane, September in Båstad, Sweden offers a balanced transition with approximately 12 hours of daylight. This month marks a noticeable shift from the sun-drenched days of summer, where daylight peaked at 17 hours in June and July. As autumn approaches, the days gradually shorten, reflecting the natural rhythm of the changing seasons. While the daylight dwindles from the vibrant long days of early summer, September still provides ample light for outdoor activities, allowing residents and visitors to savor the lingering warmth before embracing the cooler months ahead. This trending decline—down to 10 hours in October—signals the arrival of autumn, inviting Båstad’s picturesque landscapes to don their fall hues.

Average Daylight Hours in Bastad for September

The chart illustrates the variation in daylight duration in Bastad throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 35m9h 33m11h 53m14h 16m16h 25m17h 35m16h 57m15h12h 41m10h 19m8h 9m6h 57m
Data source: Bastad daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Bastad

As September arrives in Båstad, Sweden, the wind begins to shift into a gentle yet refreshing embrace, with an average speed of 4.1 m/s (9 mph). This moderate breeze offers a delightful contrast to the more robust winds of the following months, such as October's brisk 5.5 m/s (12 mph), marking a clear transition towards autumn. Interestingly, September's winds are slightly softer than the peak summer months, hinting at a delicate balance as the region moves from the warmth of summer into the cooler embrace of fall. The seasonal flow reflects a gradual increase in wind speeds from earlier in the year, creating an inviting atmosphere perfect for outdoor adventures or contemplative strolls along Båstad's picturesque coast.

Average September Wind Speed in Bastad

The chart displays monthly wind speed patterns in Bastad, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.74.94.74.93.93.83.84.74.1 m/s5.55.34.8
Data source: Bastad September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Bastad Compares to Other Months

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

In September, the weather is generally much milder with average temperatures hovering around 14°C (58°F) and maximums reaching up to 25°C (78°F). This month sees 97 mm (3.8 in) of precipitation spread over 16 days, accompanied by a relatively high humidity of 82%. In contrast, January is characterized by much colder temperatures, with averages dropping to around 2°C (36°F) and maximums only reaching 10°C (50°F). Precipitation in January totals 60 mm (2.4 in) over 11 days, with an even higher humidity level of 92%. For a detailed look at January weather, check out Bastad weather in January.

In comparing the weather between September and February, there are striking contrasts. September boasts a mild climate with temperatures ranging from a minimum of 5°C (41°F) to a comfortable average of 14°C (58°F), peaking at a max of 25°C (78°F). This month experiences significant precipitation, with 97 mm (3.8 in) over 16 days, accompanied by humidity levels at 82%.

In contrast, February presents a starkly different scene, characterized by colder temperatures that dip as low as -12°C (11°F), with an average of just 2°C (35°F) and a maximum of 10°C (50°F). Precipitation is reduced to 65 mm (2.6 in) spread over 11 days, and humidity is higher at 91%. For a closer look at what to expect during this chilly month, you can check Bastad weather in February.

September and March present starkly contrasting weather conditions. In September, temperatures range from a minimum of 5°C (41°F) to a pleasant maximum of 25°C (78°F), with an average of 14°C (58°F). The month experiences relatively high humidity at 82% and receives 97 mm (3.8 in) of precipitation over about 16 days. In contrast, March is significantly colder, with temperatures dipping as low as -11°C (13°F) and peaking at a maximum of 11°C (53°F), averaging just 3°C (38°F). Despite receiving less precipitation at 68 mm (2.7 in) over 13 days, March has higher humidity levels at 89%. For more detailed insights about March weather in Båstad, visit Bastad weather in March.

In comparing the weather of September and April, we observe significant differences in temperature and precipitation. September boasts a milder range, with average temperatures between 5°C (41°F) and 25°C (78°F), while April remains cooler, featuring a range from -4°C (26°F) to 22°C (72°F). Additionally, September experiences higher precipitation levels, totaling 97 mm (3.8 in) across 16 days, compared to April's 39 mm (1.5 in) over just 7 days. Interestingly, both months share the same humidity level of 82%, indicating consistently moist air. For those interested in more detailed information about the weather conditions in April, you can check Bastad weather in April.

In comparing the weather of September and May, September experiences a broader temperature range, with minimums of 5°C (41°F) and maximums reaching 25°C (78°F), averaging 14°C (58°F). In contrast, May's temperatures are generally milder, with minimums at 0°C (33°F) and maximums peaking at 27°C (81°F), leading to an average of 12°C (53°F). While September has higher precipitation levels at 97 mm (3.8 in) over 16 days, May sees less rainfall at 69 mm (2.7 in) across 14 days. Additionally, September's humidity is higher at 82%, compared to May's 70%. For more detailed information, you can visit Bastad weather in May.

In comparing the weather between September and June, September tends to be cooler and wetter. The average temperature in September is around 14°C (58°F), with a maximum of 25°C (78°F) and a minimum of 5°C (41°F). In contrast, June has warmer temperatures, averaging 17°C (63°F), peaking at 27°C (81°F), and only dropping to 8°C (47°F) at its lowest. Additionally, September experiences more precipitation, with 97 mm (3.8 in) falling over 16 days, while June sees a total of 54 mm (2.1 in) over just 10 days, and a notably lower humidity level of 65% compared to September's 82%. For more details on June's weather, check out Bastad weather in June.

In comparing the weather of September and July, we see distinct differences in temperature and humidity. September experiences cooler temperatures, with a minimum of 5°C (41°F) and an average of 14°C (58°F), peaking at 25°C (78°F). In contrast, July sees a warmer range, with a minimum of 9°C (48°F) and an average of 18°C (64°F), reaching up to 30°C (86°F). While both months receive the same amount of precipitation at 97 mm (3.8 in), September has slightly more rainy days, totaling 16 compared to July's 15. Additionally, September boasts higher humidity at 82%, making it feel cooler than the drier July, with only 65% humidity. For more detailed information on July weather, refer to Bastad weather in July.

In comparing the weather of September and August, September tends to be cooler with a minimum temperature of 5°C (41°F), averaging 14°C (58°F) and reaching a maximum of 25°C (78°F), while August features warmer temperatures with a minimum of 8°C (47°F), an average of 17°C (63°F), and a peak of 30°C (87°F). Additionally, September sees slightly less precipitation at 97 mm (3.8 in) over 16 days compared to August’s 119 mm (4.7 in) across 17 days. The humidity in September is higher at 82%, compared to August's 71%, contributing to a distinctly different feel in the two months. For more details on August weather, visit Bastad weather in August.

September weather is characterized by milder temperatures, with a minimum of 5°C (41°F) and an average of 14°C (58°F), peaking at around 25°C (78°F). The month experiences moderate precipitation, totaling 97 mm (3.8 in) over 16 days, accompanied by a relatively high humidity level of 82%. In contrast, October sees a noticeable drop in temperatures, with minimums reaching as low as -1°C (31°F) and an average of 10°C (51°F), culminating in a maximum of 20°C (69°F). Precipitation increases slightly to 113 mm (4.4 in) over 17 days, and humidity also rises to 90%. For a closer look at what to expect, check out Bastad weather in October.

September experiences a milder climate with average temperatures ranging from a minimum of 5°C (41°F) to a maximum of 25°C (78°F) and notable humidity at 82%. The month is relatively wet, receiving 97 mm (3.8 inches) of precipitation over about 16 days. In contrast, November brings a significant drop in temperatures, with averages hovering between -5°C (23°F) and 16°C (60°F), leading to cooler days and chilly nights. Although November has less precipitation at 70 mm (2.7 inches) over 15 days, the humidity rises slightly to 92%, adding to the colder feel. For a detailed look at November conditions, you can check Bastad weather in November.

September and December present stark contrasts in weather conditions. In September, temperatures range from a mild minimum of 5°C (41°F) to a pleasant maximum of 25°C (78°F), with an average of 14°C (58°F). The month sees significant rainfall, accumulating 97 mm (3.8 in) over 16 days, accompanied by relative humidity at 82%. In contrast, December brings a chillier environment, where temperatures dip as low as -7°C (20°F) and hardly exceed 9°C (49°F), with an average temperature of just 3°C (38°F). Precipitation in December is slightly lower at 82 mm (3.2 in) over 17 days, and humidity increases to 91%. For those interested in more specifics about December weather, you can check Bastad weather in December.

Compare Bastad's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Bastad

As September rolls into Bastad, the weather begins to showcase a distinct shift from the warmth of summer. While daytime temperatures can still reach a pleasant 25°C (78°F), the evenings grow cooler, with averages resting around 14°C (58°F) and minimums dipping to 5°C (41°F). This month also brings a notable increase in precipitation, with nearly half the month seeing rain across 16 days, contributing to a humidity level of 82%. Such conditions create a refreshing atmosphere, making September a transitionary period where the vibrant hues of autumn start to emerge. For those interested in deeper insights into the area's climate, check out Bastad Climate.