Last updated: August 27, 2025
In September, Slovenia experiences a dynamic interplay of weather, with temperatures fluctuating from a pleasant average of 16°C (61°F) to maximum highs reaching 32°C (89°F). The season transitions bring cooler nights, where temperatures can dip to a brisk minimum of 3°C (37°F). Though this month marks the onset of autumn, it also brings moderate rainfall, accumulating to 145 mm (5.7 in) over approximately 12 days, resulting in a humidity level of around 65%. This blend of warmth and moisture crafts a landscape that is both invigorating and lush, making September an ideal time to explore Slovenia's natural beauty.
As summer fades into autumn, September in Slovenia showcases a delightful transition in temperatures. The month greets visitors with a minimum of 3°C (37°F), offering a crisp freshness, while daytime warmth peaks at a pleasant 32°C (89°F). With an average temperature of 16°C (61°F), this month strikes a charming balance between the lingering warmth of summer and the coolness that heralds fall. The clear skies and mild weather create an ideal backdrop for outdoor activities, making it a wonderful time to explore Slovenia's breathtaking landscapes before the chill of October sets in.
In September, Slovenia experiences a notable peak in precipitation, with 145 mm (5.7 in) of rainfall recorded over approximately 12 days. This increase continues the trend from the summer months, where moisture levels were significant, particularly in May and July. As the country transitions into autumn, the rainfall not only surpasses the typical amounts seen earlier in the year, but it also indicates a shift toward a wetter climate. The cumulative effect of increased precipitation creates lush landscapes, fostering vibrant flora and maintaining the region's lush green charm as it prepares for the cooler months ahead.
As summer fades into autumn, September in Slovenia experiences a noticeable shift in humidity, averaging around 65%. This marks a slight increase from the drier summer months, where humidity dipped to 60% in August. The trend throughout the year showcases a gradual decline in humidity from the damp chill of winter, peaking at an impressive 90% in January, before reaching its annual low in July. However, as the season transitions, humidity levels begin to rise once again, hinting at the approaching wetness of fall, which can see percentages soaring back up to 84% by October. This dynamic shift underlines the typical Slovene climate, where the crispness of autumn brings a refreshing yet slightly more humid air.
In September, Slovenia experiences a notable transition in its UV Index, which drops to 6, indicating a high exposure category. This shift reflects the gradual easing of summer's peak intensity, yet the risk of overexposure remains significant, with a burn time of 25 minutes. As the days become shorter and cooler, it’s important to stay vigilant, especially for outdoor activities, as the sun's rays can still be potent. Looking back, we see a pattern where the UV Index peaked during the summer months, reaching its highest at 9 in July and June. As autumn approaches, this downward trend offers a gentle reminder to adjust your sun safety practices. For more details, visit UV Index.
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As summer gracefully transitions into autumn, September in Slovenia offers a delightful balance of warmth and light. With 318 hours of sunshine, it stands out as a vibrant month, nestled comfortably between the sun-drenched peaks of July and August and the cooler embrace of October. This notable decline from the previous months signals the gradual change of seasons, yet still holds onto a generous amount of sunlight. Following the peak summer months, September presents a perfect opportunity for outdoor activities amidst the stunning fall foliage, making it an ideal time to savor Slovenia's natural beauty as daylight begins to wane.
In September, Slovenia enjoys a favorable chance of sunny weather, with a 53% likelihood of sunshine. This trend is particularly noteworthy as it aligns with the summery vigor of the preceding months, like June and July. The transition into autumn sees a slight dip in sunshine probabilities compared to the peak summer months, yet September stands out as a reliable option for those seeking clear skies. As the days begin to cool, this retaining of summer-like sunlight sets the stage for pleasant outdoor activities amidst the stunning landscapes of Slovenia.
As summer gracefully transitions into autumn, September in Slovenia offers a delightful 12 hours of daylight, marking a gradual decline from the sun-drenched days of July and August, which boast 15 hours of light. This month serves as a bridge between the vibrant long days of summer and the shorter, cozier days of fall. Following the peak daylight duration in June, visitors can observe that as nature begins to prepare for the cooler months ahead, daylight starts to wane. The steady decrease in daylight hours that commenced in late summer highlights the seasonal rhythm, inviting both locals and travelers to savor the perfect balance of warmth and evening sunsets before the days shrink further into October's 10 hours of light.
As September arrives in Slovenia, the average wind speed remains a gentle 1.7 m/s (4 mph), mirroring the calm breezes of August. This continuation of subdued winds signals a transition from the slightly more blustery spring months, where speeds peaked at 2.6 m/s (6 mph) in April and May. While autumn typically ushers in cooler temperatures, the consistent light winds of September create a serene backdrop, perfect for enjoying the stunning fall foliage. As the month progresses, however, wind speeds are expected to rise slightly again in October, potentially invigorating the landscape and reminding us that change is always just around the corner.
Weather in varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in , focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January showcase starkly contrasting weather conditions. In September, the temperatures range from a chilly minimum of 3°C (37°F) to a warm maximum of 32°C (89°F), with an average of 16°C (61°F). The month also sees significant rainfall, accumulating to 145 mm (5.7 in) over 12 days, and the humidity hovers around 65%. In contrast, January is marked by much colder temperatures, with a minimum of -17°C (1°F), an average of 0°C (33°F), and a maximum of 14°C (57°F). Precipitation is notably less, totaling 34 mm (1.3 in) over just 6 days, while the humidity is higher at 90%. For a more detailed look at January's weather, visit weather in January.
September and February present contrasting weather patterns. September typically enjoys a wider temperature range, with averages around 16°C (61°F) and highs reaching up to 32°C (89°F), making it a warm month with considerable humidity at 65%. In contrast, February is much colder, with average temperatures around 4°C (39°F) and lows dropping to -12°C (11°F). Although February experiences less precipitation (58 mm over 9 days), it has a higher humidity level of 84%, contributing to the chill in the air. For more specific insights into February weather, you can explore weather in February.
In September, temperatures range from a refreshing 3°C (37°F) to a warm 32°C (89°F), with an average of 16°C (61°F), making it a month of considerable warmth. The rainfall is quite significant, totaling 145 mm (5.7 in) over about 12 days, paired with moderate humidity at 65%. In contrast, March experiences much cooler temperatures, with a minimum of -18°C (0°F) and a maximum of 22°C (72°F), averaging around 6°C (43°F). The precipitation is lower during this month, at 52 mm (2.1 in) over 9 days, but the humidity is higher at 78%. For a closer look at the weather in March, you can explore more details.
September and April present contrasting weather patterns, characterized by differing temperatures and precipitation levels. In September, temperatures range from a chilly 3°C (37°F) at the minimum to a warm 32°C (89°F) at the maximum, with an average of 16°C (61°F). This month experiences a considerable 145 mm (5.7 in) of precipitation over approximately 12 days, with humidity around 65%. In contrast, April tends to be cooler, with minimum temperatures dipping to -7°C (19°F) and maximums reaching 27°C (81°F), averaging 11°C (52°F). The month sees significantly lower precipitation at 72 mm (2.9 in), spread over 11 days, and slightly higher humidity at 73%. For more detailed insights, you can check out the weather in April.
When comparing the weather in September and May, both months offer mild temperatures, with September featuring slightly warmer average conditions. In September, the average temperature is 16°C (61°F), peaking at 32°C (89°F), while May has a slightly cooler average of 15°C (59°F) and a maximum of 31°C (88°F). Precipitation levels are comparable, with September receiving 145 mm (5.7 in) over 12 days, and May seeing 138 mm (5.4 in) across 17 days. Humidity is also higher in May at 71%, compared to September’s 65%, suggesting a more comfortable feel in September. For a deeper look into the specifics, check the details on weather in May.
When comparing the weather in September and June, we see notable differences in temperature and humidity. September temperatures range from a cool 3°C (37°F) to a warm 32°C (89°F), with an average of 16°C (61°F). In contrast, June typically features milder conditions, with a minimum of 7°C (45°F), an average of 20°C (69°F), and a maximum of 36°C (96°F). Rainfall is more pronounced in September, with 145 mm (5.7 in) spread over 12 days, while June experiences less precipitation at 93 mm (3.7 in) across 13 days. Additionally, June has a higher humidity level at 73%, compared to September's 65%. For more details, visit weather in June.
September and July showcase distinct weather patterns, reflecting the transition from summer to autumn. In July, temperatures range from a minimum of 9°C (49°F) to a maximum of 35°C (94°F), with an average of 21°C (70°F). The month experiences a total precipitation of 114 mm (4.5 in) over 14 days, accompanied by high humidity at 70%. In contrast, September sees a broader temperature range, with a minimum of 3°C (37°F) and a maximum of 32°C (89°F), resulting in an average of 16°C (61°F). While September has slightly higher precipitation at 145 mm (5.7 in) over 12 days, it has a lower humidity level at 65%. For more specific details, visit the weather in July page.
September's weather shows a noticeable shift from August, with minimum temperatures dropping to 3°C (37°F) compared to August's milder 7°C (46°F). The average temperature in September is significantly lower at 16°C (61°F), whereas August enjoys a warmer average of 21°C (71°F), peaking at a maximum of 36°C (97°F). Additionally, September experiences increased precipitation, totaling 145 mm (5.7 in) over 12 days, in contrast to August's 103 mm (4.0 in) over 11 days. Humidity levels also rise slightly in September to 65%, compared to August’s 60%. For more details on August's weather, you can check the following link: weather in August.
September weather presents a warm transition into autumn, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 32°C (89°F) and an average of 16°C (61°F). The month experiences significant rainfall, accumulating 145 mm (5.7 in) over 12 days, and maintains a moderate humidity level of 65%. In contrast, October brings about a noticeable drop in temperature, with the lows reaching -1°C (31°F) and an average of 11°C (53°F), culminating in a maximum of 25°C (78°F). Precipitation decreases to 69 mm (2.7 in) over 9 days, while humidity rises to 84%. For more details, you can check the weather in October.
September and November exhibit distinct weather patterns as the seasons transition. In September, temperatures can range from a minimum of 3°C (37°F) to a maximum of 32°C (89°F), with an average of 16°C (61°F), making it generally warmer and more variable. The month sees significant precipitation of 145 mm (5.7 in) over about 12 days, accompanied by a humidity level of 65%. In contrast, November brings much cooler temperatures, with a minimum of -5°C (23°F) and an average of 6°C (43°F), peaking at 20°C (68°F). This month has less precipitation, totaling 87 mm (3.4 in) over 10 days, but the humidity rises to 89%. For more detailed weather insights, you can check weather in November.
September and December present stark contrasts in weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 32°C (89°F), with an average of 16°C (61°F). While there is considerable warmth, with humidity at 65% and 145 mm (5.7 in) of precipitation over 12 days, the weather retains a more summery feel. In contrast, December brings much colder temperatures, with a minimum of -9°C (15°F), an average of 2°C (36°F), and a maximum of 16°C (62°F). The month is characterized by higher humidity at 89% and significantly less precipitation, totaling 71 mm (2.8 in) over just 9 days. For more details, check the weather in December.
September marks a transition in Kungota's climate, with a noticeable shift from the heat of summer to the cooler embrace of autumn. While daytime temperatures can still reach a warm 32°C, the average drops to a comfortable 16°C, and the nights can get quite chilly, dipping to 3°C. This month is characterized by increased precipitation, with about half of the days seeing some rain, adding a refreshing touch to the landscape. The 65% humidity creates a crisp atmosphere that invigorates the senses, making September a unique blend of lingering warmth and the onset of fall. For a deeper understanding of how these changes impact the region, explore the full details in our Climate section.