Last updated: August 27, 2025
In September, Brienz, Switzerland experiences a mild yet variable climate, with maximum temperatures reaching 21°C (71°F) and an average of 10°C (50°F). However, early fall can also bring cooler spells, with minimum temperatures dipping to -2°C (29°F). This month sees significant precipitation, totaling 156 mm (6.2 in) over approximately 15 days, contributing to an overall humidity level of 83%. As the landscape transitions into autumn, visitors can expect a blend of refreshing rain and crisp air, perfect for enjoying the stunning natural beauty that Brienz has to offer.
In September, Brienz, Switzerland, experiences a gentle transition from the warmth of summer to the crispness of autumn. With minimum temperatures hovering around -2°C (29°F) and comfortable daytime highs reaching up to 21°C (71°F), the month offers a delightful mix of cool mornings and pleasantly mild afternoons. The average temperature settles at 10°C (50°F), providing a perfect backdrop for exploring the breathtaking landscapes adorned with the first hints of fall foliage. As the days shorten and the air turns noticeably fresher, September stands out as a serene month, making it an ideal time for outdoor activities amidst the stunning alpine scenery.
As summer transitions to autumn, September in Brienz, Switzerland brings a notable shift in precipitation patterns. With 156 mm (6.2 in) of rainfall over approximately 15 days, this month stands out with a blend of refreshing showers that enhance the region's lush landscapes. Following the peak levels of moisture in the summer months—June and July experiencing heavy rains of 258 mm and 253 mm, respectively—September sees a slight decrease yet remains robust. This gradual decline from summer highs indicates a shift towards more temperate conditions, while still maintaining sufficient rainfall to nourish the area's vibrant scenery. The interplay of changing weather in September is a prelude to the crisp, serene autumn that follows, underscoring the region’s dynamic climate.
As summer transitions into autumn in Brienz, Switzerland, September's humidity settles at a comfortable 83%, providing a gentle embrace after the warmer months. This slight uptick from August’s 80% signals the arrival of cooler air, yet it’s noticeably lower than the peak humidity observed in the winter months, which can soar to 92% in January. Overall, the gradual decline in humidity from the spring's 84% in April to September reflects the shifting seasons and the picturesque landscape that surrounds this charming town. As the year progresses towards the wetter months of October and December, where humidity levels return to 90%, September offers a sweet spot of freshness, perfect for enjoying the breathtaking scenery of the Swiss countryside.
September in Brienz, Switzerland, marks a transition as the summer sun begins to wane, bringing a UV Index of 7 which falls into the high exposure category. This indicates a slight dip from the summer’s peak but still warrants caution, with a burn time of just 25 minutes. As the days shorten and the temperatures cool, September's UV levels remain significant, a reminder of the lingering strength of the sun. Observing this trend, after a summer of very high UV exposure, it's crucial to stay vigilant and protect your skin as fall approaches. For more detailed insights, you can check out the full data at Brienz UV Index.
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September in Brienz, Switzerland, offers a delightful balance of sunshine, with 320 hours gracing the skies as summer gently transitions into autumn. This month showcases a notable decline from the peak of 415 hours in July, yet it still reflects a vibrant continuation of warmer days. As the days grow shorter, September’s light remains abundant, outshining the early months of the year—like January’s mere 171 hours. Travelers may revel in the crisp mountain air while basking in the rich hues of fall, making this period an inviting time to explore the stunning landscapes of Brienz before the winter chill sets in.
As September rolls into Brienz, Switzerland, the chance of enjoying sunny weather settles at 36%, mirroring the previous month's probabilities. This trend suggests that while summer's warmth begins to wane, the likelihood of sunshine remains relatively stable. In fact, the figures show a slight dip from the vibrant days of June and July, both with a 31% chance of sun, while October offers a brighter outlook, climbing to 42%. Overall, September sits comfortably within the mid-range of sunshine possibilities, promising opportunities for outdoor exploration amidst the early autumn scenery.
As summer wanes in Brienz, Switzerland, September brings a gentle transition in daylight, offering about 12 hours of sunlight each day. This marks a noticeable decline from the 14 hours enjoyed in August, signaling the gradual shift towards autumn. The month remains rich in daylight compared to the depths of winter, where figures plummet to just 8 hours in December. Observing the shifting seasons, we see a steady decline from the peak brightness of 15 hours in May through July, carving out a rhythmic pattern where each month gracefully leads into the next. This dance of daylight not only showcases the natural cycle of the region but also invites residents and visitors to savor these fleeting hours under the dazzling Swiss sky.
In September, the tranquil winds of Brienz, Switzerland, maintain a gentle rhythm, averaging 1.2 m/s (3 mph), consistent with the preceding summer months. This slight decrease in wind speed mirrors the gradual transition toward autumn, as nature begins to shift gears. Throughout the year, Brienz experiences its most robust winds during the transition months of October and November, when the average picks back up, while the calmest breezes tend to grace the late spring and summer months. The soothing September winds, still reminiscent of summer’s warmth, invite visitors to embrace the serene beauty of the region before the brisk autumn chill sets in.
Weather in Brienz varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Brienz, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January in Brienz showcase stark contrasts in weather. September features milder temperatures, ranging from a minimum of -2°C (29°F) to an average of 10°C (50°F) and a maximum of 21°C (71°F), accompanied by 156 mm (6.2 in) of precipitation over 15 days and humidity at 83%. In contrast, January brings frigid conditions, with temperatures plunging to a minimum of -19°C (-3°F), an average of -5°C (24°F), and a maximum of just 7°C (45°F). Despite slightly lower precipitation at 136 mm (5.4 in) across 12 days, January experiences higher humidity levels at 92%. For more detailed information, check out Brienz weather in January.
September and February present stark contrasts in weather conditions. September enjoys milder temperatures, with averages around 10°C (50°F) and highs reaching 21°C (71°F), while February sees much colder conditions, where temperatures can drop as low as -21°C (-5°F) and average around -2°C (28°F). Additionally, September experiences more rainfall, with 156 mm (6.2 in) over approximately 15 days, compared to February's 108 mm (4.2 in) across 11 days. Humidity is slightly lower in September at 83%, while February maintains a higher humidity level at 89%. For more specific insights, you can check Brienz weather in February.
In comparing the weather of September and March, one can observe significant differences in temperature and conditions. September enjoys a milder climate, with average temperatures ranging from -2°C (29°F) to a comfortable max of 21°C (71°F), while March is characterized by much colder weather, with temperatures dipping as low as -23°C (-9°F) and only reaching a maximum of 14°C (58°F). Additionally, September is notably wetter, receiving 156 mm (6.2 in) of precipitation over 15 days compared to March, which has 133 mm (5.2 in) of precipitation over 16 days. Humidity is also slightly higher in March at 87%, compared to September's 83%. For more insights into spring weather specifics, you can check Brienz weather in March.
In September, temperatures in Brienz range from a brisk -2°C (29°F) at night to a comfortable max of 21°C (71°F) during the day, with an average around 10°C (50°F). This month sees relatively high precipitation, totaling 156 mm (6.2 in) over approximately 15 days, contributing to a humidity level of 83%. In contrast, April features even lower minimum temperatures of -16°C (3°F), with daily highs reaching up to 17°C (64°F) and an average of just 3°C (38°F). Although April is drier, with 98 mm (3.9 in) of rain falling over 12 days, it maintains a slightly higher humidity of 84%. For more specific insights into the April climate, you can check out Brienz weather in April.
When comparing the weather in September and May, notable differences emerge. September generally enjoys a milder average temperature of 10°C (50°F), with a maximum of 21°C (71°F), while May is slightly cooler on average at 7°C (45°F) with highs reaching up to 23°C (73°F). Precipitation levels are also notable; September sees about 156 mm (6.2 in) over 15 days, whereas May experiences higher rainfall at 192 mm (7.6 in) across 19 days. Additionally, September tends to be slightly more humid at 83%, compared to May's 80%. For a more detailed look into the weather during May, you can visit Brienz weather in May.
In comparing the weather between September and June, notable differences emerge in temperature and precipitation patterns. September typically experiences a wider range of temperatures, with minimums dropping to -2°C (29°F) and maximums reaching up to 21°C (71°F), resulting in an average of 10°C (50°F). In contrast, June boasts a slightly warmer average of 12°C (54°F), with maximum temperatures soaring to 28°C (82°F) and minimums only dipping to -1°C (31°F). However, June is considerably wetter, receiving 258 mm (10.2 in) of precipitation over 19 days compared to September's 156 mm (6.2 in) over 15 days. The humidity levels are relatively similar, with September at 83% and June at 82%. For more detailed insights on June weather patterns, you can check Brienz weather in June.
In comparison to July, September experiences cooler temperatures, with a minimum of -2°C (29°F) and an average of 10°C (50°F), while July typically boasts a milder climate, with a minimum of 3°C (38°F) and an average of 14°C (57°F). July's maximum temperatures reach up to 27°C (81°F), significantly higher than September's peak of 21°C (71°F). Despite enjoying a lush summer, July sees higher precipitation levels, with 253 mm (10.0 in) over 20 days, compared to September's 156 mm (6.2 in) over 15 days. Both months share the same humidity levels of 83%, but the overall cooler and wetter conditions in September mark a distinct shift toward autumn. For more detailed information, you can check Brienz weather in July.
In comparison to August, September experiences a notable drop in temperature, with average highs of 21°C (71°F) compared to August's warmer 25°C (78°F). The nights in September tend to be cooler, with minimum temperatures dipping to -2°C (29°F), while August holds a mild minimum of 3°C (38°F). While both months see significant precipitation, September averages 156 mm (6.2 in) over 15 days, less than August’s 248 mm (9.7 in) over 21 days. Additionally, humidity levels remain relatively high in both months, with September at 83% compared to August's 80%. For more detailed insights into August's weather in Brienz, you can visit Brienz weather in August.
September and October present a noticeable shift in weather conditions. In September, temperatures range from a minimum of -2°C (29°F) to a maximum of 21°C (71°F), with an average of 10°C (50°F). The month sees approximately 156 mm (6.2 in) of precipitation over 15 days, along with a humidity level of 83%. In contrast, October brings cooler temperatures, with a minimum of -5°C (23°F), an average of 6°C (43°F), and a maximum of 17°C (63°F). Precipitation slightly increases to 163 mm (6.4 in) over 14 days, while humidity rises to 90%. This change signifies a transition into the colder months, making October an even wetter and chillier month than September. For more detailed weather information, you can check out Brienz weather in October.
September and November present a stark contrast in weather conditions. In September, temperatures typically range from a cool -2°C (29°F) at night to a comfortable 21°C (71°F) during the day, averaging around 10°C (50°F). This month receives considerable rainfall, totaling 156 mm (6.2 in) over approximately 15 days, with humidity levels at 83%. In contrast, November experiences much colder temperatures, with a minimum of -13°C (8°F) and an average of just 1°C (33°F), peaking at a milder 16°C (61°F). Rainfall is lower at 104 mm (4.1 in) across roughly 13 days, accompanied by a slightly higher humidity of 88%. For a detailed look at November weather, visit Brienz weather in November.
In September, the weather in Brienz is milder with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 21°C (71°F) and an average of 10°C (50°F). Although it experiences 156 mm (6.2 in) of precipitation over 15 days, the humidity remains relatively high at 83%. In contrast, December brings chillier conditions, with temperatures plunging to a minimum of -16°C (4°F) and an average of -3°C (27°F), peaking at 7°C (45°F). The month sees slightly more precipitation at 189 mm (7.4 in) spread over 18 days, accompanied by increased humidity levels at 90%. For more details on December weather in Brienz, visit Brienz weather in December.
As summer transitions to autumn, September in Brienz brings a notable shift in climate. With temperatures cooling down from the warm days of summer, the warmest peaks at around 21°C contrast sharply with the chilly nights that can drop to a brisk -2°C. The month boasts a higher percentage of humidity at 83%, coupled with rainfall accumulating to 156 mm over approximately 15 days, making it one of the wetter months. This blend of conditions makes September an ideal time for those seeking to experience the vibrant fall foliage in Brienz. To delve deeper into what each month has to offer, visit Brienz Climate.