Last updated: August 27, 2025
In September, Gryon, Switzerland, experiences a delightful yet varied climate that showcases the transition from summer to fall. With maximum temperatures reaching 23°C (74°F) and an average of 11°C (52°F), the days remain pleasantly warm. However, evenings can be brisk, dipping to a minimum of -5°C (24°F), reminding us of the impending winter chill. This month sees 120 mm (4.7 in) of precipitation spread across approximately 15 days, contributing to a humid atmosphere with 81% humidity. Visitors can expect a blend of sunny spells and refreshing showers, making it an ideal time for exploring the beautiful alpine landscapes adorned with early autumn hues.
In September, Gryon, Switzerland begins to shift away from the warmth of summer, showcasing a refreshing transition into the crispness of autumn. The temperatures range from a minimum of -5°C (24°F) to an inviting maximum of 23°C (74°F), allowing for a comfortable average of 11°C (52°F). This month marks a notable drop compared to the peak summer months, yet it retains enough warmth for outdoor activities amidst the stunning alpine backdrop. With the cooler evenings hinting at the approaching winter, September offers a delightful blend of lingering summer vibes and early autumn charm, making it a perfect time to explore the enchanting landscapes of Gryon.
In September, Gryon experiences a moderate precipitation total of 120 mm (4.7 in), marking a slight decline from the wetter months of summer. With 15 days of rain, the arrival of autumn brings a refreshing change, as the region transitions from the lush greenery of summer to the colorful hues of fall. While September's rainfall is less than the peaks seen in May and June, it maintains a consistent climate pattern, ensuring the landscape remains vibrant and alive. As the season progresses towards the wetter months of October and December, September serves as a gentle reminder of nature's shifting rhythms, providing a bridge between the warm sun and the crisp autumn air.
September in Gryon, Switzerland, brings a subtle shift in humidity, as the summer heat gives way to the crispness of autumn. With humidity levels at 81%, it marks a slight increase from the previous month, suggesting a transition from the drier conditions of August, which recorded a comfortable 77%. This transitional month retains elements of summer, creating a balanced atmosphere that is neither too dry nor overwhelmingly moist. As the year progresses, September's humidity sets the stage for the upcoming autumn months, which tend to showcase a steady rise, peaking with 89% in both October and November. The overall trend illustrates a fascinating cycle of changing weather patterns, offering both residents and visitors a unique experience of Gryon’s beautiful environment.
As September rolls into Gryon, Switzerland, the UV Index dips to 7, which indicates a high exposure category, allowing for a burn time of roughly 25 minutes. This marks a gentle decline from the peak summer months, where the index soared to a maximum of 10 in June. While UV levels are still significant in September, they generally signal a transition towards cooler days and less intense sun exposure, offering a brief respite before autumn sets in. It’s not a time to let your guard down, though; proper sun protection remains essential, given that UV radiation can still be damaging. For more detailed insights on UV levels throughout the year, check out Gryon UV Index.
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September in Gryon, Switzerland, embraces the last rays of summer with 330 hours of sunshine, showcasing a vibrant transition into autumn. As the warm days of July and August start to wane, this month retains a generous supply of sunlight, significantly above the winter months and comfortably nestled between the bustling summer and the crisp autumn. The trend of increasing sunshine from January to June culminates in a peak during July, while September offers a gentle decline, hinting at nature’s calming embrace as the year progresses. With sky-high expectations set earlier in the year, September serves as a beautiful reminder of the lingering warmth and light before the shorter days of October take hold.
In Gryon, Switzerland, September presents a moderate chance of sunny weather, with approximately 34% likelihood of sunshine. This follows a summer season characterized by fluctuating sun exposure, peaking in March at 43% and then gradually settling lower through the summer months. Interestingly, September marks a slight decline in sunny days compared to the preceding months of August and July, where chances hovered around 38% and 33%, respectively. As autumn approaches, a return to higher probabilities begins in October, reaching 46%. Thus, while September may not be a peak time for sunshine, it still offers a pleasant chance for clear skies amidst the early autumn hues.
As the summer sun begins to wane, September in Gryon, Switzerland, brings a gentle transition, offering approximately 12 hours of daylight. This marks a notable decline from the peak of 15 hours seen in June and July, yet it still provides ample time for outdoor adventures and enjoying the breathtaking landscape. The gradual shortening of days continues into October, where daylight dips to 10 hours, signaling the approach of autumn's embrace. Overall, September stands as a beautiful bridge between the vibrant days of summer and the cozy, shorter days of fall, allowing residents and visitors to savor the last warm rays before winter settles in.
As September settles in Gryon, Switzerland, the gentle breezes begin to whisper a transition from the warmth of summer to the cooler embrace of autumn. With an average wind speed of 1.1 m/s (2 mph), September's winds are among the calmest of the year, echoing the soft lull that accompanies the changing seasons. After a slight uptick in summer months where the winds remained around 1.1 to 1.2 m/s, the subtle reduction in speed during September hints at a pause before the winds pick up again in October. This serene atmosphere invites leisurely strolls through the vibrant landscapes as nature prepares for its stunning autumn display, encapsulating the tranquil essence that defines this beautiful Swiss resort town during this time of year.
Weather in Gryon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Gryon, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather conditions that reflect the changing seasons. In September, temperatures range from a chilly minimum of -5°C (24°F) to a more pleasant maximum of 23°C (74°F), with an average temperature of 11°C (52°F). The month experiences 120 mm (4.7 in) of precipitation over 15 days, accompanied by a humidity level of 81%. Conversely, January is significantly colder, with temperatures plummeting to a minimum of -24°C (-11°F) and climbing only to a maximum of 8°C (48°F), resulting in an average temperature of -6°C (22°F). Although January sees slightly higher precipitation at 138 mm (5.4 in) over 10 days, the humidity level is higher at 91%. For a detailed look at January weather in Gryon, you can explore Gryon weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a low of -5°C (24°F) to a pleasant high of 23°C (74°F), with an average temperature of 11°C (52°F). The month experiences a moderate amount of precipitation, totaling 120 mm (4.7 in) over approximately 15 days, accompanied by a humidity level of 81%.
In contrast, February is characterized by much colder temperatures, peaking at just 14°C (57°F) and dipping to a low of -20°C (-3°F), resulting in an average temperature of -2°C (29°F). Although February has slightly less precipitation at 115 mm (4.5 in), it occurs over fewer days (11), with humidity slightly higher at 89%. For more detailed insights about conditions in February, you can check out Gryon weather in February.
September and March present strikingly different weather conditions. In September, temperatures range from a chilly low of -5°C (24°F) to a comfortable high of 23°C (74°F), with an average of 11°C (52°F), while March experiences colder weather with temperatures spanning from -22°C (-8°F) to a maximum of 16°C (62°F) and an average of just 1°C (34°F). Precipitation is also notable in both months, with September receiving 120 mm (4.7 in) and March slightly higher at 142 mm (5.6 in), both spread over 15 days. Additionally, March tends to be more humid, with a humidity level of 87% compared to September's 81%. For more detailed information, visit Gryon weather in March.
In comparing September and April weather, we see distinct differences in temperature and conditions. September enjoys warmer average temperatures, with a range from -5°C (24°F) to a maximum of 23°C (74°F), while April experiences cooler temperatures, with a minimum of -16°C (4°F) and an average of just 5°C (41°F). The precipitation is slightly higher in September, totaling 120 mm (4.7 in) over 15 days, compared to April's 90 mm (3.5 in) over 13 days. Humidity levels are fairly comparable, with September at 81% and April slightly higher at 84%. For a detailed look at the weather conditions in April, you can check Gryon weather in April.
September and May exhibit notable differences in weather patterns. In September, temperatures range from a minimum of -5°C (24°F) to a pleasant maximum of 23°C (74°F), with an average temperature of 11°C (52°F). The month sees around 120 mm (4.7 in) of precipitation over approximately 15 days, coupled with a humidity level of 81%. In contrast, May has a broader temperature span, with minimums dropping to -11°C (13°F) and maximums reaching up to 26°C (79°F). The average temperature sits at 8°C (47°F), but May is generally wetter, experiencing 211 mm (8.3 in) of precipitation spread across 20 days and a slightly lower humidity of 80%. To learn more about Gryon's weather in May, visit this link: Gryon weather in May.
In comparing the weather between September and June, we see notable differences in temperature, precipitation, and overall conditions. September experiences a minimum temperature of -5°C (24°F) with an average of 11°C (52°F) and a maximum of 23°C (74°F). In contrast, June features milder temperatures, recording a minimum of -1°C (30°F), an average of 13°C (56°F), and a maximum of 30°C (85°F). While both months have high humidity levels, September has slightly lower humidity at 81% compared to June's 82%. Rainfall is more pronounced in June, accumulating to 211 mm (8.3 in) over 20 days, in contrast to September's 120 mm (4.7 in) over 15 days. For a more detailed look at June weather, you can check out Gryon weather in June.
In comparing the weather of September and July, it is evident that July tends to be warmer, with average temperatures reaching 15°C (59°F) and a maximum of 28°C (83°F), while September boasts a cooler average of 11°C (52°F) and a maximum of 23°C (74°F). Precipitation is more frequent in July, with 206 mm (8.1 in) over 17 days, compared to September's 120 mm (4.7 in) across 15 days. Both months experience high humidity, but July's humidity is slightly lower at 82%, compared to September's 81%. For those interested in July's climate specifics, Gryon weather in July offers detailed insights.
In September, the weather shows a noticeable cooling trend compared to August, with minimum temperatures dropping to -5°C (24°F) and an average of 11°C (52°F), while August's minimums are higher at 3°C (37°F) and an average of 14°C (58°F). The maximum temperatures also reflect this shift, with September peaking at 23°C (74°F) compared to August's warmer maximum of 27°C (81°F). September sees a considerable amount of precipitation at 120 mm (4.7 in) over 15 days, which is less than August's 189 mm (7.4 in) over 16 days. Humidity levels are slightly higher in September at 81% compared to 77% in August. For more detailed insights into August weather, you can check Gryon weather in August.
September and October exhibit notable differences in weather patterns. In September, temperatures range from a minimum of -5°C (24°F) to a maximum of 23°C (74°F), with an average of 11°C (52°F). The month experiences a moderate amount of precipitation, totaling 120 mm (4.7 in) over 15 days, and carries a humidity level of 81%. Conversely, October sees a slight drop in average temperature, with a maximum of 20°C (68°F) and a lower average of 7°C (44°F), while the minimum remains the same at -5°C (23°F). Precipitation increases slightly to 127 mm (5.0 in) over 13 days, and humidity rises to 89%, indicating a more pervasive dampness. For those interested in detailed weather patterns, you can check out Gryon weather in October.
In September, temperatures range from a chilly -5°C (24°F) to a warm 23°C (74°F), with an average of 11°C (52°F). The month experiences around 120 mm (4.7 in) of precipitation over 15 days, contributing to a relatively high humidity of 81%. In contrast, November brings significantly colder conditions, with temperatures dipping as low as -17°C (1°F) and peaking at 17°C (63°F), averaging just 1°C (33°F). Precipitation is slightly lower at 105 mm (4.1 in), occurring over 12 days, and humidity increases to 89%. For more detailed insights on November weather, you can visit Gryon weather in November.
September and December present contrasting weather patterns in Gryon. In September, temperatures range from a brisk -5°C (24°F) at their lowest to a comfortable 23°C (74°F) at their peak, with an average of 11°C (52°F). The month experiences 120 mm (4.7 in) of precipitation spread over 15 days, accompanied by a humidity level of 81%. Conversely, December brings significantly colder conditions, with minimum temperatures plunging to -25°C (-13°F) and only reaching a maximum of 9°C (48°F). The average temperature drops to -4°C (24°F), and the month sees a higher total precipitation of 228 mm (9.0 in) over 18 days, along with an increased humidity of 91%. For more details, check out the link: Gryon weather in December.
As September settles in Gryon, the weather begins to shift, offering a unique blend of warmth and coolness that sets it apart from the summer months. With a mix of moderate temperatures and increased precipitation, the landscape transforms into a lush and vibrant display, while the humidity lingers, creating a cozy atmosphere. This month is characterized by more frequent rain, with about half of the days experiencing some form of precipitation. As the season transitions, Gryon's climate invites visitors to embrace the beauty of early autumn, making it an enchanting time to explore the region. For an in-depth look at the climate throughout the year, visit Gryon Climate.