Last updated: February 26, 2025
September in Diessen am Ammersee, Germany offers a delightful transition into autumn, showcasing a diverse spectrum of weather. With maximum temperatures reaching 28°C (82°F), the warmth invites outdoor activities, while the average settles around a comfortable 14°C (58°F). Cool nights bring temperatures down to a brisk 2°C (36°F). This month also witnesses 94 mm (3.7 in) of rainfall, spread across 13 days, contributing to the lush landscapes characteristic of the region. Guests can expect a relatively humid atmosphere, sitting at 83%, making for refreshing mornings and mild afternoons, perfect for exploring the beauty of the Ammersee area.
As September unfolds in Diessen am Ammersee, the air begins to cool from the summer heat, presenting an inviting transition into autumn. With temperatures ranging from a minimum of 2°C (36°F) to a pleasant maximum of 28°C (82°F), this month showcases a comforting average of 14°C (58°F). The warmth lingers, reminiscent of the summer months, yet the crispness in the air hints at the changing seasons ahead. This pattern of gradually decreasing temperatures contrasts sharply with the winter chill that follows, making September an ideal time for outdoor activities while enjoying the remaining warmth of late summer.
In September, Diessen am Ammersee recorded 94 mm (3.7 in) of precipitation over 13 days, marking a noticeable shift as summer transitions into autumn. This amount, while lower than the previous May and August, aligns with the region's typical pattern of increased rainfall in the late summer to early fall. September's precipitation is a reminder of the wet season that follows the drier months of spring, reflecting a gradual escalation in precipitation following the year’s peak in midsummer. This moderate increase contributes to the region’s lush scenery, offering a vivid backdrop as nature prepares for the cooler months ahead.
In Diessen am Ammersee, September marks a transition in humidity as summer wanes and autumn approaches, with levels around 83%. This slightly elevated humidity hints at the lingering warmth of the season, mirroring the August average of 80%. The trend from the spring months reveals a gradual decline in humidity, peaking at 93% in January and steadily decreasing through April before experiencing a modest rise during the summer. Comparatively, January and October revisit higher humidity levels at 93% and 90%, respectively, indicating a distinct shift towards a more humid climate as the year progresses. Thus, while September may offer a brief reprieve before the colder months set in, it encapsulates the ongoing ebb and flow of humidity that characterizes life by the picturesque Ammersee.
As summer fades into autumn, September in Diessen am Ammersee presents a notable shift in the UV Index, dropping to 6, which is categorized as high. This decrease from the peak summer values of very high (UV Index 8 and 9) to high suggests a welcomed respite from intense sun exposure, yet still warrants caution, especially for those planning outdoor activities. With a recommended burn time of 25 minutes, it's crucial to stay vigilant about sun protection. This trend mirrors the transitional nature of the season, where cooler temperatures gradually take precedence while maintaining a significant UV presence. For more detailed insights on sun safety, please refer to Diessen am Ammersee UV Index.
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September in Diessen am Ammersee, Germany, offers a delightful transition from the vibrant summer sun to the crisp autumn air, with an impressive 305 hours of sunshine. This month showcases a noticeable decline from the peak summer hours of July, which boasts an impressive 406 hours, yet still retains a generous amount of sunlight compared to the chillier months ahead. The gradual tapering of sunlight from August’s 370 hours highlights a shift in seasons, as the town prepares for October's more subdued 265 hours. The consistent flow of sunshine throughout the year paints a picture of Diessen am Ammersee as a charming locale where light dances upon the water, making September a particularly enchanting time to visit before the days grow shorter.
In September, Diessen am Ammersee enjoys an invigorating 47% chance of sunny weather, marking it as one of the more promising months for sunshine in the region. This uptick follows a steady trend from the cooler months, where the chances of sun gradually increase from a mere 15% in January to 43% in April. Although summer months like July and August hover around the low thirties in percentage points, September stands out as a bright spot, encouraging locals and visitors alike to embrace the outdoors. As autumn approaches, this significant likelihood for sunny days offers a perfect backdrop for enjoying the last warmth of the season before the clouds move in.
As summer fades in September, Diessen am Ammersee experiences a gentle decline in daylight duration, with the sun gracing the skies for about 12 hours each day. This shift marks a transition from the bustling brightness of summer—with its peak of 15 hours in June, July, and August—towards the shorter days of fall. The lingering warmth of late summer still lingers, but as the leaves begin to change, daylight hours steadily decrease, paving the way for the cozy embrace of autumn. In this month, nature prepares for its colorful transformation, inviting residents and visitors alike to cherish the golden hours ahead while enjoying the balance of light before the days shorten further into the depths of October.
As summer gently gives way to autumn in Diessen am Ammersee, September greets residents and visitors with its softest breezes, boasting an average wind speed of just 2.0 m/s (4 mph). This marks a notable decrease from the milder winds of the preceding months, with August and June registering slightly higher speeds. The transition into fall is reflected in the overall trend, as wind speeds tend to dip during this time, likely influenced by the changing temperatures and the lush greenery preparing for winter. With a palpable serenity in the air, September’s calm winds create a perfect backdrop for leisurely strolls by the lake, inviting everyone to savor the beauty of the season in this charming Bavarian town.
The weather in Diessen am Ammersee 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 Diessen am Ammersee and find detailed weather information for every month.
September and January present starkly contrasting weather conditions. In September, temperatures range from a chilly 2°C (36°F) at night to a warm 28°C (82°F) during the day, with an average temperature of 14°C (58°F). The month sees moderate precipitation of 94 mm (3.7 in) spread over 13 days, accompanied by relatively high humidity at 83%. In contrast, January brings much colder temperatures, with nighttime lows plunging to -20°C (-4°F) and daytime highs only reaching 15°C (60°F), resulting in an average temperature of 0°C (33°F). Precipitation is somewhat lower at 79 mm (3.1 in) over 11 days, but humidity remains high at 93%. For more details, you can check Diessen am Ammersee weather in January.
September and February present contrasting weather conditions. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 28°C (82°F), with an average of 14°C (58°F). The month experiences about 94 mm (3.7 in) of precipitation over 13 days, accompanied by a humidity level of 83%. In stark contrast, February sees much colder temperatures, with a minimum of -15°C (6°F) and a maximum of 18°C (64°F), averaging only 3°C (37°F). Although February has less precipitation, at 74 mm (2.9 in) spread over 12 days, the humidity is slightly higher at 89%. For a more detailed look at February weather, you can visit Diessen am Ammersee weather in February.
In comparing the weather of September and March, notable differences emerge. September typically enjoys milder temperatures, with an average of 14°C (58°F) and high daytime peaks reaching 28°C (82°F), making it suitable for outdoor activities. In contrast, March experiences colder conditions, with an average of only 5°C (41°F) and lows dropping to -13°C (9°F). While September sees more substantial rainfall of 94 mm (3.7 in) over 13 days, March has slightly less precipitation at 72 mm (2.8 in) over 14 days. Additionally, humidity levels are similar, with September at 83% and March at 86%, highlighting a dampness that persists in both months. For more detailed information, you can refer to Diessen am Ammersee weather in March.
In comparing the weather of September and April, we observe noticeable differences in temperature and precipitation patterns. September tends to be warmer with average temperatures around 14°C (58°F) and max temperatures reaching up to 28°C (82°F), while April has a cooler average of 9°C (48°F) and a maximum of 26°C (79°F). Precipitation is more frequent in September, with 94 mm (3.7 in) of rain over 13 days compared to April's 55 mm (2.2 in) over 10 days. Both months share a humidity level of 83%, creating a similar moisture content in the air. For more detailed weather insights, you can explore Diessen am Ammersee weather in April.
When comparing the weather in September and May, there are some notable differences. September tends to be warmer, with average temperatures reaching 14°C (58°F) compared to May's average of 13°C (55°F). However, May can occasionally see slightly lower minimum temperatures, dropping to -1°C (31°F), while September's minimum is 2°C (36°F). May experiences more precipitation, with 136 mm (5.4 in) spread over 19 days, in contrast to September's 94 mm (3.7 in) over 13 days. Humidity levels are slightly higher in September at 83%, while May maintains a relative humidity of 78%. For more detailed insights, check out Diessen am Ammersee weather in May.
In comparing the weather of September and June, there are notable differences in temperature and precipitation patterns. September tends to have a broader temperature range, with minimums dropping to 2°C (36°F) and maximums reaching up to 28°C (82°F), resulting in an average temperature of 14°C (58°F). In contrast, June offers warmer temperatures, featuring a minimum of 5°C (40°F) and maximums soaring to 33°C (92°F), yielding an average of 18°C (64°F). Precipitation is slightly higher in June, with 125 mm (4.9 in) falling over 15 days, compared to September's 94 mm (3.7 in) over 13 days. Humidity is also more pronounced in September at 83%, while June enjoys a slightly lower humidity level of 79%. For more detailed insights, check out Diessen am Ammersee weather in June.
In comparing the weather of September and July, it's clear that July tends to be warmer overall, with average temperatures reaching 19°C (66°F) compared to September's average of 14°C (58°F). July experiences higher maximum temperatures as well, peaking at 33°C (91°F), whereas September's max is 28°C (82°F). Both months see significant precipitation, with July receiving 124 mm (4.9 in) over 16 days, and September slightly less at 94 mm (3.7 in) over 13 days. Humidity levels are relatively similar, with September at 83% and July at 82%. For more details, you can check Diessen am Ammersee weather in July.
In September, the weather in Diessen am Ammersee tends to be cooler than in August, with minimum temperatures dropping to 2°C (36°F) compared to August's warmer minimum of 8°C (47°F). The average temperature also reflects this change, with September averaging 14°C (58°F) versus August's more comfortable 19°C (66°F). While September experiences a lower maximum temperature of 28°C (82°F), August peaks at a hotter 32°C (91°F). Precipitation increases slightly in September, totaling 94 mm (3.7 in) over 13 days, compared to 136 mm (5.4 in) across 16 days in August, though humidity remains fairly high in both months, at 83% in September and 80% in August. For more details on August's weather, visit Diessen am Ammersee weather in August.
As September transitions into October, the weather shows distinct changes. In September, temperatures range from a minimum of 2°C to a maximum of 28°C, with an average of 14°C, while October brings cooler conditions, with temperatures dropping to a minimum of -1°C and an average of 10°C. Precipitation remains relatively steady, with September seeing 94 mm over 13 days, compared to October's 86 mm over 11 days. Additionally, humidity levels rise slightly in October to 90%, compared to 83% in September. This shift marks the move from the warmth of late summer to the crispness of fall, making October particularly notable. For more details, you can check the Diessen am Ammersee weather in October.
In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 28°C (82°F), with an average temperature of 14°C (58°F). This month experiences a significant amount of precipitation, totaling 94 mm (3.7 in) over 13 days, alongside a humidity level of 83%. In contrast, November sees cooler temperatures, with a minimum of -3°C (26°F) and a maximum of 19°C (67°F), resulting in an average of just 5°C (40°F). Precipitation is less frequent in November, accumulating to 54 mm (2.1 in) over 10 days, while humidity rises slightly to 89%. For more detailed insights into November weather, visit Diessen am Ammersee weather in November.
In September, the weather in Diessen am Ammersee is generally milder, with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 28°C (82°F), averaging around 14°C (58°F). The month experiences relatively high humidity at 83% and sees precipitation on about 13 days, totaling 94 mm (3.7 in). In contrast, December brings colder conditions, with temperatures dropping to a minimum of -7°C (20°F) and only reaching a maximum of 13°C (56°F), averaging just 2°C (36°F). While precipitation remains similar at 96 mm (3.8 in), it occurs over more days, with rain or snow on approximately 17 days, and humidity rises to 90%. For more details about December weather in Diessen, visit Diessen am Ammersee weather in December.
As September rolls into Diessen am Ammersee, the weather showcases a fascinating transition from the warmth of summer to the coolness of autumn. With average temperatures moderating from the peak summer highs, residents and visitors can enjoy pleasant days often tinged with a crispness in the air that heralds the coming season. Rain becomes more frequent, marking this month as one of the wetter periods, contributing to the lush landscapes that characterize the region. Despite the increased humidity and precipitation days, there are still ample opportunities to bask in the natural beauty of the area. For those keen on understanding more about how this month's conditions compare to others throughout the year, take a look at the detailed insights in Diessen am Ammersee Climate.