September Weather in Chiemsee, Germany

Last updated: February 26, 2025

In September, Chiemsee, Germany experiences a striking transition into autumn. With maximum temperatures peaking at 27°C (80°F), the weather can still feel quite warm, while the average settles at a mild 13°C (56°F). However, as the month progresses, some chilly nights can bring temperatures down to an invigorating -1°C (31°F). Rainfall is a notable feature this time of year, with 146 mm (5.7 in) of precipitation spread over 16 days, resulting in an 83% humidity level that contributes to the region's lush landscapes. Visitors can expect a mix of pleasant days and refreshing showers, making September a characteristically vibrant month at Chiemsee.

September Temperature in Chiemsee

In September, Chiemsee, Germany, begins to transition from summer's warmth into the cooler embrace of autumn. With minimum temperatures dipping to a crisp -1°C (31°F) and averaging around 13°C (56°F), the region experiences a refreshing shift in climate. Daytime highs can still reach a pleasant 27°C (80°F), allowing for comfortable afternoons by the lake. This month marks a notable change from the intense summer heat, where temperatures frequently hit 33°C (92°F) in July and August, hinting at the cooler months to come as October follows closely behind. The vibrant hues of early fall scenery, paired with milder weather, make September a captivating time to explore the natural beauty surrounding Chiemsee.

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

The chart illustrates September temperature patterns in Chiemsee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec293338465363636456493932
Data source: Temperature data for Chiemsee generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Chiemsee

September in Chiemsee, Germany, brings a notable 146 mm (5.7 inches) of precipitation, marking a continued trend of significant rainfall as the summer months transition into autumn. With rain falling on 16 days, the month retains a brisk rhythm, though it shows a slight decrease from the summer's peaks in May and July, which each saw 205 mm (8.1 inches). This transition offers a balanced blend of sunny and rainy days, nurturing the growing landscape as it prepares for the cooler months ahead. September's precipitation serves as a reminder of the region's lush, temperate climate, ensuring that the vibrant scenery stays refreshed and verdant.

September Precipitation Trends in Chiemsee

The chart displays monthly precipitation patterns in Chiemsee, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1201001119420517820619614613380145
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Chiemsee

In September, Chiemsee experiences a humidity level of 83%, a slight uptick from the drier summer months of July and August, which saw humidity figures of 82% and 80%, respectively. This gradual rise heralds the transition into autumn, aligning with the trend of increasing humidity as the year progresses. The months leading up to September show a relatively stable pattern, with humidity peaking during the winter months of January and October at 93% and 90%. As the seasons shift, residents and visitors can expect the air to feel increasingly moist, marking the onset of cooler, more humid conditions that characterize the fall in this picturesque region of Germany.

September Average Humidity in Chiemsee

This chart illustrates the average monthly humidity levels in Chiemsee, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec93%89%86%83%78%79%82%80%83%90%89%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chiemsee

As September arrives in Chiemsee, Germany, the UV Index shows a notable decline to 6, categorizing the exposure as high and indicating a burn time of just 25 minutes. This drop follows a peak during the summer months, where the index reached 9, marking periods of very high exposure in July and June. While September still demands sun protection, particularly during midday, it signals the transition towards milder conditions, reminiscent of early spring. As autumn approaches, the sun's intensity wanes, but it's essential to remain vigilant. For more insights on managing sun exposure, visit Chiemsee UV Index.

Maximum UV Index Levels in Chiemsee for September

The chart shows the monthly maximum UV Index (UVI) for Chiemsee 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.
JanFebMarAprMayJunJulAugSepOctNovDec236789986432
Data source: Chiemsee 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 Chiemsee

As summer gracefully fades into autumn, September shines brilliantly in Chiemsee, Germany, boasting 298 hours of sunshine. This month stands as a beautiful transition, still basking in the glow of the long summer days, although it marks a noticeable decrease from the sun-drenched peak of 396 hours in July. Following the vibrant 356 hours of August, September retains a pleasing amount of daylight, hinting at the cozy charm of the upcoming fall season. The gradual decline in sunlight hours from May through October underscores the region's shift from lively summer activities to the tranquil beauty of autumn, inviting locals and visitors alike to enjoy the serene landscapes before winter sets in.

Monthly Sunshine Duration in Chiemsee: September Highlighted

The September sunshine duration represents the total number of hours Chiemsee 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.
JanFebMarAprMayJunJulAugSepOctNovDec162h233h292h335h343h377h396h356h298h273h220h184h
Data source: Chiemsee September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Chiemsee During September

September in Chiemsee, Germany, marks a delightful turning point in the weather as the chance of sunny days rises to 49%. This notable increase contrasts with the more modest sunshine probabilities earlier in the year, particularly in the colder months, where January and December hover around just 16% and 24% respectively. As summer bids farewell, September offers a refreshing blend of lingering warmth and increasing sunlight, surpassing the typically overcast late spring and summer months. With a sunny outlook that rivals even the sunnier spring months of February and March, September is an ideal time to embrace the beauty of Chiemsee's landscapes bathed in golden light.

Percentage of Sunny Days in September in Chiemsee

The chart illustrates the percentage of sunny days in Chiemsee 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 Chiemsee experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%45%41%40%27%38%34%32%49%38%30%24%
Data source: Chiemsee September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Chiemsee in September

As summer transitions into autumn, September in Chiemsee, Germany, welcomes a gradual reduction in daylight, offering 12 hours of sunlight each day. This marks a notable decrease from the sun-drenched days of summer, where June through August bask in 15 hours of daylight. While still brighter than the winter months, September's light signals the impending shift toward shorter days, with October bringing only 10 hours. The overall trend reflects a natural progression from the long, luminous days of spring and summer to the cozy, shadowed ambiance of fall, inviting residents and visitors alike to savor the beautiful scenery in the soft glow of early autumn light.

Average Daylight Hours in Chiemsee for September

The chart illustrates the variation in daylight duration in Chiemsee throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 52m10h 14m11h 55m13h 40m15h 9m15h 55m15h 31m14h 11m12h 31m10h 47m9h 15m8h 27m
Data source: Chiemsee daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Chiemsee

As September rolls in at Chiemsee, Germany, the gentle caress of the wind begins to soften, with average speeds dipping to 1.5 m/s (3 mph). This marks a continuation of the trend seen through the summer months, where the breezes were notably calm, establishing a serene atmosphere ideal for lakeside strolls. In contrast to the lively spring months, where wind speeds held steady around 2.0 m/s (4 mph), the autumn air ushers in a more tranquil vibe, perfect for reflection and appreciation of the stunning natural beauty. As the cooling temperatures signal the transition into fall, the diminishing winds make way for a peaceful embrace of the changing season.

Average September Wind Speed in Chiemsee

The chart displays monthly wind speed patterns in Chiemsee, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.01.81.92.02.01.71.61.61.5 m/s1.61.51.7
Data source: Chiemsee September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Chiemsee Compares to Other Months

The weather in Chiemsee changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Chiemsee and find detailed weather information for every month.

September and January present starkly contrasting weather conditions. In September, temperatures range from a chilly minimum of -1°C (31°F) to a pleasant maximum of 27°C (80°F), with an average temperature of 13°C (56°F). The month experiences substantial precipitation, totaling 146 mm (5.7 in) over about 16 days, accompanied by a relatively high humidity of 83%. In contrast, January is significantly colder, with temperatures plummeting to a minimum of -24°C (-11°F) and only reaching a maximum of 10°C (51°F), yielding an average of -2°C (29°F). Despite having less total precipitation at 120 mm (4.7 in) over 13 days, January's humidity is slightly higher at 93%, creating a notably frosty atmosphere. For more detailed insights, you may refer to Chiemsee weather in January.

September and February showcase striking contrasts in weather conditions. September typically enjoys a much milder climate, with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 27°C (80°F) and an average of 13°C (56°F). The month experiences considerable rainfall, accumulating 146 mm (5.7 in) over about 16 days, contributing to a humidity level of 83%.

In contrast, February is distinctly colder, featuring temperatures that dip as low as -18°C (-1°F) with an average of only 1°C (34°F) and a maximum of 18°C (65°F). Although it has less overall precipitation—100 mm (3.9 in) over 14 days—the humidity is slightly higher at 89%. This stark difference highlights the seasonal shifts, making September feel much more temperate compared to the chill of February. For those interested in February's specific conditions, you can find further details here: Chiemsee weather in February.

In comparing the weather between September and March, it's clear that the two months offer distinct experiences. September showcases a wider range of temperatures, from a chilly minimum of -1°C (31°F) to a warm maximum of 27°C (80°F), with an average of 13°C (56°F). In contrast, March is cooler overall, with temperatures ranging from a low of -14°C (7°F) to a high of 18°C (65°F) and an average of just 3°C (38°F). While September has slightly higher precipitation at 146 mm (5.7 in) over 16 days, March still experiences significant rainfall, totaling 111 mm (4.4 in) over 17 days. Both months have high humidity, with September at 83% and March slightly higher at 86%. For more details on March weather, you can visit Chiemsee weather in March.

In comparing the weather between September and April, we find notable differences in temperature and precipitation. September tends to have a warmer average temperature of 13°C (56°F), with a maximum of 27°C (80°F), while April averages only 8°C (47°F), peaking at 26°C (78°F). Despite its slightly cooler temperatures, April records lower precipitation levels at 94 mm (3.7 in) over 13 days compared to September's 146 mm (5.7 in) across 16 days. Interestingly, both months share the same humidity level of 83%. For a closer look at the specific conditions in April, visit Chiemsee weather in April.

September and May exhibit notable differences in weather patterns, despite their proximity in the calendar year. In September, temperatures range from a chilly minimum of -1°C (31°F) to a comfortable maximum of 27°C (80°F), with an average of 13°C (56°F). The month experiences significant rainfall, totaling 146 mm (5.7 in) across 16 days, accompanied by a high humidity level of 83%. In contrast, May displays a cooler minimum temperature of -5°C (22°F) and a slightly higher maximum of 29°C (85°F), with an average just above September at 12°C (53°F). However, May sees even more precipitation, with 205 mm (8.1 in) over 23 days, coupled with a lower humidity of 78%. For more detailed insights on May weather, check the link: Chiemsee weather in May.

September and June showcase distinct weather characteristics. In September, temperatures range from a chilly minimum of -1°C (31°F) to a comfortable average of 13°C (56°F), peaking at a pleasant 27°C (80°F). The month experiences about 146 mm (5.7 in) of precipitation over 16 days, with humidity levels rising to 83%. In contrast, June typically offers warmer conditions, with minimum temperatures around 3°C (38°F), an average of 17°C (63°F), and a maximum reaching 33°C (92°F). Although it sees slightly more precipitation, totaling 178 mm (7.0 in) over 17 days, the humidity remains lower at 79%. For those interested in specific June conditions, additional details can be found on Chiemsee weather in June.

September weather presents a notable shift compared to the warmth of July. In September, temperatures range from a chilly minimum of -1°C (31°F) to a more moderate maximum of 27°C (80°F), with an average temperature of 13°C (56°F). In contrast, July boasts milder conditions, with minimum temperatures staying at 7°C (46°F) and maximums reaching as high as 33°C (92°F), resulting in an average of 17°C (64°F). Both months experience significant rainfall, with September receiving 146 mm (5.7 in) over 16 days and July tallying 205 mm (8.1 in) across 18 days. Humidity levels remain relatively similar, hovering around 83% in September and slightly lower at 82% in July. For those looking to explore the weather specifics of July, consider checking Chiemsee weather in July.

In comparing the weather between September and August, September experiences cooler temperatures, with a minimum of -1°C (31°F) and an average of 13°C (56°F), contrasted with August's milder minimum of 6°C (43°F) and an average of 18°C (64°F). The maximum temperature in September reaches 27°C (80°F), notably lower than August's peak of 33°C (92°F). Additionally, September sees increased precipitation, totaling 146 mm (5.7 in) over 16 days, compared to August’s 196 mm (7.7 in) over 18 days. Despite this, September's humidity is slightly higher at 83%, while August maintains a humidity level of 80%. For more details on August weather patterns, check out Chiemsee weather in August.

September and October present a notable shift in weather conditions. While September enjoys a wider temperature range with highs reaching up to 27°C (80°F) and an average of 13°C (56°F), October brings cooler temperatures, with a maximum of only 23°C (74°F) and an average of 9°C (49°F). Precipitation levels are relatively similar, with September receiving 146 mm (5.7 in) over 16 days, slightly more than October's 133 mm (5.2 in) over 14 days. Humidity also rises in October, peaking at 90% compared to September's 83%. For a deeper understanding of October weather specifics, you can explore Chiemsee weather in October.

September and November exhibit notable differences in weather characteristics. September boasts a wider temperature range, with minimums around -1°C (31°F) and maximums reaching 27°C (80°F), accompanied by an average temperature of 13°C (56°F). In contrast, November sees lower temperatures, with averages dropping to 4°C (39°F) and maximums of 19°C (66°F), while experiencing colder nights with minimums plummeting to -9°C (17°F). Precipitation in September is more frequent, occurring on 16 days and totaling 146 mm (5.7 in), compared to November’s 80 mm (3.1 in) over just 10 days. Additionally, November's humidity is slightly higher at 89%, compared to September's 83%. For more insights on the specific conditions in the region during this month, check out Chiemsee weather in November.

September and December present contrasting weather patterns, highlighting the transition from late summer to the heart of winter. In September, temperatures range from a mild -1°C (31°F) at night to a warm average of 13°C (56°F) during the day, peaking at 27°C (80°F). In contrast, December features much colder temperatures, with minimums plunging to -14°C (7°F) and an average of 0°C (32°F), reaching a maximum of only 14°C (57°F). Both months see similar precipitation levels, with September receiving 146 mm (5.7 in) across 16 days, while December has slightly higher rainfall at 145 mm (5.7 in) over 18 days. Additionally, humidity is notably high in both months, increasing from 83% in September to 90% in December, contributing to the chilly feel of the winter season. For a closer look at December weather specifics, visit Chiemsee weather in December.

Compare Chiemsee's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Chiemsee

As September wraps up summer and ushers in autumn around Chiemsee, the weather reveals its transitional nature, showcasing a pleasant blend of warmth and coolness. Daytime temperatures can still reach a comfortable 27°C (80°F), but chilly nights can drop to as low as -1°C (31°F), making layers essential for outdoor exploration. While the average temperature settles at a mild 13°C (56°F), you'll also notice an increase in rainfall, with 16 days experiencing precipitation and a total of 146 mm (5.7 in) throughout the month. The high humidity level of 83% further enhances that crisp fall atmosphere. This unique mix sets September apart from the warmer summer months, inviting visitors to truly savor the changing seasons. For more insights on weather patterns, check out Chiemsee Climate.