Last updated: August 27, 2025
Experience the dynamic September weather in Vipava, Slovenia, where temperatures can soar to a sizzling 31°C (87°F) during the day, while the average hovers around a comfortable 17°C (62°F). As night falls, prepare for cooler conditions with a minimum of 4°C (40°F). This month, Vipava sees a total precipitation of 190 mm (7.5 in) across approximately 12 rainy days, contributing to a 64% humidity that envelops the region. Whether you're enjoying sunny afternoons or cozying up during the showers, September offers a captivating blend of warmth and refreshment in this picturesque European setting.
In September, Vipava, Slovenia, transitions beautifully from the summer heat, boasting a minimum temperature of 4°C (40°F) and an average of 17°C (62°F). As the month advances, daily highs can reach up to 31°C (87°F), offering a warm farewell to summer. This slight dip in temperature marks a shift towards the cooler autumn months while still inviting outdoor adventures in the pleasant early fall weather. Notably, after a scorching August, which saw highs soaring to 35°C (95°F), September provides a refreshing balance, making it a perfect time to explore the stunning landscapes of Slovenia before the chill of winter sets in.
September in Vipava, Slovenia ushers in a notable increase in precipitation, with an impressive 190 mm (7.5 in) falling over 12 days. This marks a significant rise from the previous months, particularly from the drier summer, emphasizing the transition to the wetter autum. Not only is September the month with some of the highest rainfall, but it also sets the tone for the upcoming months, including October and November, which continue to see substantial precipitation levels. Such trends highlight the region’s distinctive climate pattern, where early autumn brings a refreshing wave of moisture that nourishes the landscape. The increase in both precipitation amount and frequency underscores the importance of September as a pivotal month in Vipava’s annual weather cycle.
As summer fades, September in Vipava, Slovenia experiences a subtle shift in humidity levels, settling at 64%. This marks a notable increase from the dry heat of August, which saw humidity dip to a refreshing 51%. The trend reveals a gradual rise in moisture as the seasons transition, especially when compared to the lower summer months. This uptick prepares the landscape for the cooler, wetter autumn, with October and November bringing significant humidity returns at 83% and 89% respectively. The fluctuation in humidity not only adds to the region's charm but also reflects the changing rhythms of nature, as Vipava embraces the onset of fall.
As September arrives in Vipava, Slovenia, the UV Index shows a notable decline from the intense summer months, averaging 7, which places it in the high exposure category. This means that while sun lovers can enjoy the lingering warmth, it's essential to take precautionary measures, with a burn time of just 25 minutes under direct sunlight. Compared to the peak of summer, where UV levels soared to 9, September offers a more manageable sun exposure, yet it still calls for vigilance as the daylight hours gradually shorten. As the year progresses, the UV Index will dip further, signaling a shift towards lower exposure in the coming months. To learn more about the UV Index trends throughout the year, visit Vipava UV Index.
UV Risk Categories
In September, Vipava, Slovenia basks in a delightful 321 hours of sunshine, offering a splendid close to summer. As the season transitions, the sunlight begins to wane compared to the summer months, which peak with 430 hours in July and 398 hours in August. However, September still benefits from a generous slice of bright days, with sunlight hours gradually tapering off towards autumn, where October brings 291 hours. This gradual decline reflects a beautiful shift in nature, inviting residents and visitors alike to enjoy the warm, golden hues of the landscape before the chill of winter sets in.
September in Vipava, Slovenia, welcomes a delightful 55% chance of sunny weather, marking it as one of the brighter months of the year. As summer wanes, the likelihood of sunshine rises slightly from August's 53%, showcasing a trend of increasing sun exposure as the region transitions into autumn. This is a welcomed shift, especially after the cooler and often cloudier months earlier in the year. With September being on the cusp of fall, residents and visitors alike can enjoy the lingering warmth and clearer skies, making it a perfect time for outdoor activities and exploring the stunning landscapes of Vipava.
As summer ebbs away, September in Vipava, Slovenia marks a gentle transition with an average daylight duration of 12 hours. This month sees a gradual decline from the longer days of July and August, where daylight peaked at 15 and 14 hours, respectively. September’s daylight reflects the start of the autumn season, where the sunlight begins to wane, leading to shorter days ahead as October drops to 10 hours. Despite this reduction, the 12 hours of daylight still provide ample time to enjoy the last warmth of summer, making September a pleasant month for outdoor activities amid the changing colors of nature.
As September unfolds in Vipava, Slovenia, the average wind speed settles at a gentle 2.1 m/s (5 mph), reflecting a slight decline from the summer's breezy conditions. This month bridges the transition from the warmth of summer to the cooling embrace of autumn. Notably, the wind desists further in June, hitting its lowest point at 1.8 m/s (4 mph), before gradually returning to more typical values. As the season progresses, average wind speeds pick up slightly, culminating in October’s refreshing 3.1 m/s (7 mph). This subtle dance of the winds throughout the year encapsulates the region's microclimate, creating a delightful atmosphere for both locals and visitors alike.
Weather in Vipava varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Vipava, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather experiences. In September, temperatures range from a cool 4°C (40°F) to a warm 31°C (87°F), with an average of 17°C (62°F). The month sees significant rainfall of 190 mm (7.5 in) over around 12 days, with humidity at a moderate 64%. In stark contrast, January is much colder, with temperatures dropping to a minimum of -12°C (11°F) and an average of just 2°C (35°F). The max temperature reaches 12°C (53°F), and precipitation is considerably lower at 70 mm (2.8 in) over 7 days, accompanied by higher humidity levels at 88%. For more detailed insights, check out Vipava weather in January.
September and February exhibit markedly different weather patterns. In September, temperatures range from a minimum of 4°C (40°F) to a maximum of 31°C (87°F), with an average of 17°C (62°F). The month sees a total precipitation of 190 mm (7.5 in) over about 12 days and maintains a humidity level of 64%. In contrast, February is significantly colder, with temperatures fluctuating from a biting -10°C (14°F) to a milder maximum of 20°C (69°F) and an average of just 4°C (40°F). Despite having slightly less precipitation at 133 mm (5.2 in) over 11 days, the humidity is higher, at 82%. For more details, you can check out Vipava weather in February.
September and March present contrasting weather patterns, with September showcasing a warmer climate and March heralding the chill of early spring. In September, temperatures range from a mild 17°C (62°F) on average, peaking at a warm 31°C (87°F), while March has a much cooler average of 6°C (44°F), with highs reaching only up to 22°C (72°F). Precipitation in September is notably higher at 190 mm (7.5 in) over 12 days, compared to March's 98 mm (3.9 in) over 11 days. Additionally, March experiences slightly higher humidity levels at 73%, compared to September's 64%. For a closer look at March weather in a specific region, visit Vipava weather in March.
September and April exhibit notable differences in weather conditions. September boasts warmer temperatures, with a minimum of 4°C (40°F) and an average high of 31°C (87°F), contrasting with April's chilly lows of -6°C (21°F) and a maximum of 25°C (78°F). Precipitation is more pronounced in September, with 190 mm (7.5 in) occurring over 12 days, compared to April’s 122 mm (4.8 in) over 11 days. Additionally, humidity levels are slightly higher in April at 73%, compared to September’s 64%. For a more detailed look at April weather in Vipava, visit Vipava weather in April.
In comparing the weather of September and May, we find several notable differences. September boasts a wider temperature range with minimums around 4°C (40°F) and maximums reaching up to 31°C (87°F), resulting in an average temperature of 17°C (62°F). In contrast, May has a cooler average of 15°C (59°F), with minimums of 3°C (38°F) and maximums peaking at 26°C (80°F). While September experiences slightly less precipitation at 190 mm (7.5 in) over 12 days, May sees a bit more rain, totaling 205 mm (8.1 in) over 20 days. Additionally, May's humidity is a bit higher at 70%, compared to September's 64%. For more detailed information, you can explore Vipava weather in May.
When comparing the weather in September to that of June, notable differences emerge in temperature and precipitation. September experiences a wider range in temperature, with minimums dropping to 4°C (40°F) and maximums reaching up to 31°C (87°F), while the average temperature is around 17°C (62°F). In contrast, June offers a milder minimum temperature of 8°C (46°F) and a slightly warmer average of 20°C (68°F), peaking at 35°C (95°F). Additionally, September sees higher precipitation levels, with 190 mm (7.5 in) over 12 days, compared to June's 115 mm (4.5 in) over just 10 days. The humidity levels are quite similar, with September at 64% and June slightly higher at 69%. For those interested in a more detailed look at June weather, you can refer to Vipava weather in June.
When comparing the weather in September to that of July, September features a broader temperature range, with minimums dropping to 4°C (40°F) and maximums reaching up to 31°C (87°F), while July maintains milder nights with a minimum of 11°C (51°F) and daytime highs around 34°C (93°F). September also sees a noticeable increase in precipitation, totaling 190 mm (7.5 in) over 12 days, compared to July's 117 mm (4.6 in) over 14 days. Humidity levels are quite similar, resting at 64% in September and slightly lower at 63% in July. For more detailed weather information, you can visit Vipava weather in July.
In comparing the weather of September to that of August, significant differences emerge. September experiences a wider temperature range, with minimums dropping to 4°C (40°F) and maximums peaking at 31°C (87°F), whereas August maintains a milder minimum of 11°C (51°F) and a higher maximum of 35°C (95°F). Precipitation also increases in September, totaling 190 mm (7.5 in) over 12 days compared to August's 111 mm (4.4 in) during the same number of days. Additionally, September's humidity rises to 64%, compared to August's more comfortable 51%. For a detailed look at August's weather, you can visit Vipava weather in August.
In September, the weather begins to cool down from the summer heat, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 31°C (87°F) and an average of 17°C (62°F). However, this month also experiences significant rainfall, with 190 mm (7.5 in) of precipitation over 12 days and a humidity level of 64%.
By October, the temperatures drop further, with a minimum of 2°C (36°F), an average of 12°C (54°F), and a maximum of 23°C (74°F). Precipitation decreases to 128 mm (5.0 in) over 11 days, but the humidity rises to 83%, contributing to a crisp, damp atmosphere. For a detailed look at October weather conditions, visit Vipava weather in October.
September and November showcase a notable shift in weather patterns. September features a broader temperature range with a minimum of 4°C (40°F), an average of 17°C (62°F), and a maximum of 31°C (87°F), indicating warm days and cool nights. In contrast, November sees cooler temperatures, with a minimum dipping to -4°C (24°F) and an average of 7°C (46°F), peaking at 18°C (65°F). Precipitation levels remain similar, with September receiving 190 mm (7.5 in) across 12 days and November close behind at 187 mm (7.4 in) over 13 days. Notably, humidity rises significantly in November to 89%, compared to September's 64%, contributing to a damp and chilly atmosphere. For more detailed information, you can check Vipava weather in November.
In September, the weather is generally warm and pleasant, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 31°C (87°F), and an average of 17°C (62°F). The month also sees considerable precipitation of 190 mm (7.5 in) over about 12 days, accompanied by a humidity of 64%. In contrast, December brings a much colder climate, with temperatures dropping to a minimum of -7°C (20°F) and averaging just 3°C (38°F), peaking at 13°C (56°F). Despite the lower precipitation of 169 mm (6.7 in) over the same number of days, the humidity rises significantly to 88%. For more detailed insights on December weather, you can check Vipava weather in December.
As summer begins to wane, September in Vipava offers a unique blend of warmth and refreshment, making it distinct from the preceding months. With daytime temperatures reaching a comfortable peak of 31°C (87°F), it provides an ideal backdrop for outdoor activities. However, the cool nights, dropping to around 4°C (40°F), remind us of the impending autumn. This month experiences increased rainfall, totaling 190 mm (7.5 in) over 12 days, contributing to a lush landscape while maintaining a humidity level of 64%. For those seeking to explore the region's changing climate, September is a bridge between the heat of summer and the crispness of fall, and more insights can be found at Vipava Climate.