Last updated: February 26, 2025
September in Rosenheim, Germany showcases a dynamic blend of autumnal charm and lingering warmth, with daytime temperatures peaking at a pleasant 26°C (80°F) and settling to an average of 13°C (56°F). Nights can be quite brisk, dipping to a minimum of 0°C (32°F). This month is also marked by significant precipitation, totaling 138 mm (5.4 in) over approximately 15 days, contributing to a high humidity level of 83% that envelops the region. Visitors can expect a variety of weather experiences, making it a perfect time for cozy indoor activities or exploring the stunning natural landscapes that begin to transform with the changing seasons.
As September arrives in Rosenheim, Germany, a noticeable shift in temperatures signals the transition from summer to autumn. The month begins with a minimum temperature of 0°C (32°F), suggesting the first hints of chill in the air, while daytime highs can reach a comfortable 26°C (80°F). With an average temperature of 13°C (56°F), September provides a pleasant balance, enticing locals and visitors alike to enjoy the beautiful, crisp days before the colder months set in. This month’s mild climate showcases a remarkable departure from the blistering summer heat, inviting outdoor activities and the stunning transformation of foliage, making it an ideal time to experience the charm of this picturesque Bavarian town.
September in Rosenheim, Germany, marks a transitional period as summer gives way to autumn, and this shift is reflected in the precipitation patterns. With 138 mm (5.4 in) of rain falling over 15 days, September experiences a notable increase in moisture compared to the preceding months. This surge in precipitation is a part of a broader trend seen throughout the summer, which recorded higher rainfall amounts, particularly in July and August with 211 mm (8.3 in) and 202 mm (8.0 in) respectively. The increase in September's rainfall signifies the onset of the wetter season, making it one of the top months for precipitation in Rosenheim, further complemented by the lush greenery that the rains support. As temperatures begin to cool, the region prepares for the drier months ahead, with October reducing to 118 mm (4.7 in) over just 12 days, hinting at a quieter month on the precipitation front.
In Rosenheim, Germany, September ushers in a slight rise in humidity, settling at 83%, a modest increase from the summer months. This trend reflects a gradual transition as the region shifts from the drier conditions of late spring and summer, where humidity dipped to around 78-80%. Although September's levels are lower than the winter highs—peaking at a humid 93% in January and 90% in both October and December—this month's humidity indicates a shift towards the more moisture-laden autumn and winter seasons. Overall, while September enjoys mild humidity, it sets the stage for the wetter months ahead as the air becomes increasingly saturated with moisture.
As summer transitions into autumn in Rosenheim, Germany, the September UV Index settles at a moderate level of 6, categorizing exposure as high. This marks a decline from the peak levels seen during the height of summer, where UV exposure reached alarming heights of 9 in both July and June. Visitors and residents can enjoy a relatively safe burn time of 25 minutes, allowing for outdoor activities while still needing to take protective measures. With the UV Index gradually decreasing from the previous months, September strikes a balance—offering sunny days while reminding us to stay sun-smart. For more detailed insights, check out the Rosenheim UV Index.
UV Risk Categories
As summer fades, September in Rosenheim, Germany offers a delightful balance of sunshine, boasting 298 hours of bright, warm days. This month remains vibrant following the peak summer months of July and June, which each recorded nearly 400 hours of sunlight. While September sees a natural decline in sunlight hours compared to the high of the summer, it still ranks favorably against the earlier parts of the year, showcasing a significant increase over the winter months, with only 163 hours in January. The transition into autumn is marked by a gentle decrease in daylight, yet September retains a golden warmth, making it an ideal time to enjoy the stunning Bavarian landscapes before the crisp chill of October sets in.
In Rosenheim, Germany, September stands out with a 47% chance of sunny weather, making it one of the brighter months of the year. This notable increase in sunshine likelihood follows the summer months of July and August, which experienced lower probabilities of sunshine at 34% and 32%, respectively. Such a trend suggests an uplifting transition into autumn, where the weather can still be pleasantly warm and inviting. With a significant jump from the summer doldrums, September becomes an ideal time for outdoor activities and enjoying the lingering warmth of late summer before the clouds of October roll in with a 38% chance of sunshine.
As summer fades into autumn, Rosenheim, Germany experiences a gradual shift in daylight duration. In September, daylight lasts for 12 hours, signaling a transition from the long, sun-drenched days of June, July, and August, which each boast 15 hours of light. The decrease in daylight becomes evident, hinting at the approaching shorter days of autumn and winter, where daylight dips to 10 hours in October and further to 8 hours by December. This trend of diminishing daylight paints a vivid picture of the seasonal cycle, inviting residents and visitors alike to savor the last of the warm, sunlit evenings before the crisp chill of fall sets in.
As summer gracefully transitions into autumn, September in Rosenheim brings with it a notable decline in wind speed, averaging just 1.5 m/s (3 mph). This marks the lowest wind speed of the year, a gentle whisper of breeze that contrasts with earlier months where winds were consistently above 2 m/s. This softening of the winds mirrors the onset of cooler temperatures and a shift in the season’s rhythm. Though September may be calmer than its summer predecessors, it offers a serene backdrop for residents and visitors alike to enjoy the vibrant colors of early fall, creating an idyllic setting for leisurely strolls and cozy gatherings.
The weather in Rosenheim 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 Rosenheim and find detailed weather information for every month.
September and January showcase strikingly different weather patterns. In September, temperatures range from a mild minimum of 0°C (32°F) to a comfortable average of 13°C (56°F), peaking at 26°C (80°F). With 138 mm (5.4 in) of precipitation over 15 days, the humidity sits at a relatively pleasant 83%. In contrast, January brings much colder temperatures, with lows reaching -27°C (-16°F) and an average of -1°C (30°F), and a maximum of only 11°C (52°F). Precipitation decreases slightly to 107 mm (4.2 in) but occurs over 12 days, with humidity peaking at 93%. For more details on January weather, check out Rosenheim weather in January.
September and February offer contrasting weather experiences. In September, temperatures range from a chilly 0°C (32°F) at night to a pleasant 26°C (80°F) during the day, with an average of 13°C (56°F). The month sees significant rainfall, with 138 mm (5.4 in) over about 15 days, coupled with a high humidity level of 83%. In contrast, February is much colder, with temperatures dipping as low as -22°C (-7°F) at night and reaching a maximum of 18°C (65°F) during the day, averaging only 1°C (34°F). While February has less precipitation at 94 mm (3.7 in) over 13 days, the humidity remains high at 89%. For a detailed look at the February weather, you can check Rosenheim weather in February.
September and March present stark contrasts in weather patterns. September boasts a more moderate temperature range with a minimum of 0°C (32°F) and a pleasant maximum of 26°C (80°F), making it ideal for outdoor activities. In contrast, March experiences significantly cooler temperatures, ranging from a chilly -17°C (1°F) at its lowest to a mild 18°C (65°F) at its peak, reflecting the transition from winter to spring.
Precipitation in September is higher, totaling 138 mm (5.4 in) over 15 days, whereas March sees slightly less at 98 mm (3.9 in) across 16 days, indicating a potentially wetter yet milder late winter month. Humidity levels are comparable, with September at 83% and March slightly higher at 86%. For further details, you can explore Rosenheim weather in March.
When comparing the weather in September and April, we can observe some notable differences. In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 26°C (80°F), with an average of 13°C (56°F). The month experiences significant precipitation, totaling 138 mm (5.4 in) over approximately 15 days, all while maintaining consistent humidity levels at 83%. In contrast, April features cooler temperatures, with a minimum of -8°C (17°F) and a maximum of 25°C (78°F), averaging 8°C (47°F). It sees less rainfall, amounting to 91 mm (3.6 in) across about 13 days, yet the humidity remains steady at 83%. For more detailed weather insights, check out Rosenheim weather in April.
In comparison to May, September in Rosenheim offers a milder temperature range, with average temperatures hovering around 13°C (56°F) compared to May's average of 12°C (53°F). However, September experiences higher maximum temperatures, reaching up to 26°C (80°F), while May can peak at 30°C (86°F). Precipitation is more frequent in May, occurring over 23 days and accumulating to 199 mm (7.8 in), whereas September sees precipitation on only 15 days, totaling 138 mm (5.4 in). Additionally, September's humidity is slightly higher at 83%, compared to May’s 78%. For a more detailed understanding of May weather in Rosenheim, you can visit Rosenheim weather in May.
When comparing the weather patterns of September and June, notable differences in temperature and precipitation emerge. September experiences a broader temperature range, with minimums dipping to 0°C (32°F) and maximums reaching up to 26°C (80°F), resulting in an average of 13°C (56°F). In contrast, June is generally warmer, with a minimum temperature of 3°C (37°F), an average of 17°C (63°F), and maximums peaking at 33°C (92°F). Both months see considerable rainfall, but June has a slightly higher average precipitation of 179 mm (7.1 in) over 18 days compared to September’s 138 mm (5.4 in) over 15 days. Humidity levels are comparable, with September at 83% and June slightly lower at 79%. For more detailed insights about June weather, you can check Rosenheim weather in June.
When comparing the weather in September to that of July, a few notable differences emerge. September generally experiences cooler temperatures, with a minimum of 0°C (32°F), an average of 13°C (56°F), and a maximum of 26°C (80°F), whereas July is warmer, with minimums around 7°C (44°F), averages of 17°C (63°F), and peaks reaching 33°C (92°F). Additionally, September sees a significant amount of rainfall, totaling 138 mm (5.4 in) over 15 days, while July is even wetter, recording 211 mm (8.3 in) over 20 days. Humidity levels remain quite similar, with September at 83% and July slightly lower at 82%. For more detailed information, you can check out Rosenheim weather in July.
Comparing the weather between September and August reveals notable differences. September sees a drop in temperature, with average highs reaching 26°C (80°F) compared to August’s warmer highs of 33°C (92°F). Additionally, September experiences lower nighttime temperatures, with a minimum of 0°C (32°F) versus August’s milder 7°C (44°F). While September has less precipitation at 138 mm (5.4 in) over 15 days of rain, it still remains fairly humid, averaging 83%. In contrast, August is wetter with 202 mm (8.0 in) across 18 days, though it maintains a slightly lower humidity level of 80%. For more detailed information on August weather, you can check Rosenheim weather in August.
In comparing the weather between September and October, we observe a notable drop in average temperatures, with September averaging 13°C (56°F) compared to October's 9°C (49°F). While September experiences a broader temperature range, peaking at 26°C (80°F), October's highs are slightly lower at 23°C (73°F). Precipitation remains prevalent in both months, with September receiving 138 mm (5.4 in) over 15 days, while October has a somewhat lighter total of 118 mm (4.7 in) across 12 days. Additionally, October sees an increase in humidity, rising from 83% in September to 90%. For more specific details on October weather, you can visit Rosenheim weather in October.
September and November present quite a contrast in weather characteristics. In September, temperatures can range from a minimum of 0°C (32°F) to a comfortable maximum of 26°C (80°F), with an average of 13°C (56°F). During this month, precipitation is relatively high at 138 mm (5.4 in) over about 15 days, accompanied by a humidity level of 83%. In comparison, November sees cooler temperatures, with a minimum of -9°C (15°F) and a maximum of 19°C (66°F), averaging just 4°C (39°F). Although November has less precipitation at 75 mm (3.0 in) over 10 days, the humidity increases slightly to 89%. For a more detailed look at the weather in November, check out Rosenheim weather in November.
In September, the weather is generally milder, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 26°C (80°F) and an average of 13°C (56°F). This month sees substantial rainfall, with 138 mm (5.4 in) spread over 15 days, and humidity levels sitting at 83%. In contrast, December experiences much colder temperatures, with a minimum of -15°C (6°F), an average of 0°C (33°F), and a maximum of 13°C (56°F). Although precipitation decreases slightly to 128 mm (5.0 in) over 18 days, the humidity rises to 90%, creating a notably chillier and more damp atmosphere. For more detailed information, check out Rosenheim weather in December.
As September unfolds in Rosenheim, the weather transitions to a crisp and invigorating atmosphere, setting it apart from the warmer months of summer. While temperatures can still reach a comfortable 26°C (80°F), the average settles around a pleasant 13°C (56°F), inviting residents and visitors alike to enjoy outdoor activities. With 138 mm (5.4 in) of rain spread over 15 days, this month is distinctly more humid than the preceding summer, enveloping the area in a lush, vibrant greenery. The higher humidity levels of 83% contribute to the refreshing feel of the air, indicating that autumn is on the horizon. For those intrigued by this refreshing shift in climate, explore more at Rosenheim Climate.