September Weather in Kobarid, Slovenia

Last updated: August 27, 2025

In Kobarid, Slovenia, September offers a captivating blend of mild temperatures and considerable rainfall, ideal for exploring the picturesque landscapes. The maximum temperature can reach a pleasant 27°C (81°F), while the average hovers around a comfortable 15°C (60°F). However, don't underestimate the chill of early mornings, where temperatures can dip to 2°C (35°F). With 161 mm (6.3 in) of precipitation over 15 days, the month brings a refreshing humidity level of 74%, contributing to the lush greenery that makes Kobarid a nature lover's paradise. Whether you're traversing scenic trails or indulging in local cuisine, September's weather sets the perfect backdrop for your adventures.

September Temperature in Kobarid

As September rolls into Kobarid, Slovenia, the lingering warmth of summer begins to yield to the crispness of autumn, creating a delightful transitional climate. With minimum temperatures hovering around 2°C (35°F) and average highs reaching a pleasant 27°C (81°F), this month offers a perfect opportunity to explore the stunning natural landscapes. The average temperature of 15°C (60°F) makes it ideal for outdoor activities, whether hiking through the picturesque valleys or enjoying local cuisine at outdoor cafes. As daylight hours gradually shorten, visitors can savor the beauty of the changing leaves, all while experiencing the comforting embrace of early fall.

September Weather in Kobarid: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Kobarid, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kobarid, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec313641495666686860514234
Data source: Temperature data for Kobarid generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Kobarid

In September, Kobarid, Slovenia experiences a significant share of rainfall, with precipitation amounting to 161 mm (6.3 in) over about 15 wet days. This amount mirrors the rainfall of the preceding month, August, indicating a continuation of the late summer showers. As summer transitions into autumn, September's precipitation reflects a pattern of increased rainfall that peaks in November at 205 mm (8.1 in), suggesting that this month is a pivotal point in the seasonal wetness. The consistent number of rainy days throughout late summer and early autumn illustrates Kobarid's characteristic climate, making it a picturesque spot for nature lovers drawn to its lush, vibrant landscapes.

September Precipitation Trends in Kobarid

The chart displays monthly precipitation patterns in Kobarid, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Kobarid, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec66130118161219134123138161155205191
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kobarid

In September, Kobarid experiences a notable stability in humidity levels, maintaining around 74%—a figure consistent with the summer months. This slight increase in humidity from August's 68% signals a transition towards the wetter autumn months, but still reflects the lingering warmth of summer. As the year progresses into October, humidity levels are expected to rise significantly to 88%, suggesting that September serves as a bridge between the dry summer period and the more humid conditions of fall and winter. Overall, Kobarid's humidity trends illustrate a rhythmic cycle, with September being a critical month that prepares the landscape for the upcoming seasonal shifts.

September Average Humidity in Kobarid

This chart illustrates the average monthly humidity levels in Kobarid, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Kobarid is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%87%82%79%74%75%74%69%74%88%90%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kobarid

As September arrives in Kobarid, Slovenia, the UV Index dips slightly to 7, placing it in the high exposure category. This decrease from the peak of 9 in July and June reflects the gradual transition towards autumn, yet it still signifies a need for caution during sun exposure, with a burn time of around 25 minutes. As the days grow shorter and the sun’s intensity wanes, it’s essential to keep in mind the lingering effects of early fall sun, especially after a summer of very high UV levels. For those planning outdoor activities, this means a continued vigilance similar to spring and early summer. Embrace the beautiful September skies while ensuring that you shield yourself appropriately. For more insights on UV levels, check out the Kobarid UV Index.

Maximum UV Index Levels in Kobarid for September

The chart shows the monthly maximum UV Index (UVI) for Kobarid in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Kobarid typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246789987532
Data source: Kobarid September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Kobarid

As summer transitions into autumn, September in Kobarid, Slovenia, offers a delightful mix of warm sunshine and crisp air, boasting 305 hours of sunlight. This month’s sunshine reflects a significant drop from the peak of July’s 409 hours, heralding the end of the sun-drenched days. However, it still stands strong compared to the drearier months ahead, such as October's 268 hours and November's 199 hours. The gradual decline in sunlight through the year showcases nature's rhythm, inviting both locals and visitors to relish the last tastes of summer before Kobarid slips into the quieter, cloudier days of fall. As you explore this stunning corner of Slovenia, every sunbeam in September is a reminder to soak in the serene beauty before winter's embrace takes hold.

Monthly Sunshine Duration in Kobarid: September Highlighted

The September sunshine duration represents the total number of hours Kobarid experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec184h223h295h325h349h395h409h377h305h268h199h198h
Data source: Kobarid September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kobarid During September

In September, Kobarid, Slovenia, enjoys a 46% chance of sunny weather, making it one of the more promising months for sunshine as summer transitions to autumn. This likelihood is relatively stable compared to the warmer months of July and August, which hover around the 45% mark. Notably, September’s sunshine potential marks a slight rebound from the dip experienced in April and May, where likelihood dropped to 32% and 37%, respectively. As the year progresses, the chances begin to decline again in October, hinting that September stands as a sweet spot for enjoying the outdoors before the cloudier months set in. This balance of sun and cooler temperatures makes September a delightful time to explore the lush landscapes of Kobarid.

Percentage of Sunny Days in September in Kobarid

The chart illustrates the percentage of sunny days in Kobarid throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Kobarid experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec33%43%56%37%32%45%45%48%46%43%34%39%
Data source: Kobarid September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kobarid in September

As summer fades into autumn, Kobarid experiences a gradual shift in daylight. In September, the sun graces the town for 12 hours, marking a gentle decline from the 14 hours enjoyed in August. This reduction signals the onset of shorter days, as the vibrant greens of summer give way to the warm tones of fall. The daylight duration continues to diminish steadily, reminiscent of the transition seen earlier in the year, where January's meager 9 hours gradually expanded through spring and peaked in the long days of June and July. With the arrival of autumn, residents and visitors alike can relish the serene beauty of Kobarid bathed in the soft light of September, even as they anticipate the cozy, candlelit days ahead.

Average Daylight Hours in Kobarid for September

The chart illustrates the variation in daylight duration in Kobarid throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 4m10h 20m11h 56m13h 34m14h 58m15h 41m15h 18m14h 4m12h 29m10h 52m9h 25m8h 40m
Data source: Kobarid daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Kobarid

As autumn approaches, September winds in Kobarid, Slovenia, whisper at a gentle average speed of 1.4 m/s (3 mph), reflecting a subtle calming transition from the breezy summer months. The pattern established throughout the year shows a slight dip in wind speed, contrasting with the more moderate gusts experienced in April and May. While still mild compared to the gustier months of October and November, September’s tranquil breezes invite a cozy atmosphere, perfect for enjoying the breathtaking beauty of the surrounding landscapes as they prepare for the colorful foliage of fall. This soothing transition not only marks a shift in seasons but also encapsulates the serenity that Kobarid offers during this enchanting time of year.

Average September Wind Speed in Kobarid

The chart displays monthly wind speed patterns in Kobarid, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.41.51.71.61.51.61.51.4 m/s1.91.91.7
Data source: Kobarid September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Kobarid Compares to Other Months

Weather in Kobarid varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kobarid, focusing on differences in temperature, rainfall, humidity, and UV levels.

In comparing the weather between September and January, we see a striking contrast in temperature and seasonal characteristics. September enjoys a mild climate with average temperatures around 15°C (60°F), peaking at 27°C (81°F) and a relatively high humidity of 74%. It also experiences significant precipitation, with 161 mm (6.3 in) over approximately 15 days. In stark contrast, January is marked by cold conditions, with average temperatures dropping to -1°C (31°F), a maximum of just 10°C (49°F), and a minimum of -12°C (10°F). The month is drier, accumulating only 66 mm (2.6 in) over about 6 days, but it has a higher humidity level of 91%. For more details about January weather in Kobarid, you can check this link: Kobarid weather in January.

September and February present stark contrasts in weather conditions. In September, temperatures range from a cool 2°C (35°F) to a warm 27°C (81°F), with an average of 15°C (60°F), while February sees much colder conditions, with temperatures spanning from -17°C (2°F) to a mild 18°C (64°F) and an average of just 2°C (36°F). September experiences higher temperatures and slightly more precipitation, with 161 mm (6.3 in) over 15 days, whereas February has less rainfall at 130 mm (5.1 in) across only 9 days. The humidity is also notably higher in February at 87%, compared to 74% in September. For those looking for more detailed insights about February weather, you can find additional information here: Kobarid weather in February.

September and March present contrasting weather profiles. September boasts milder temperatures, ranging from a minimum of 2°C (35°F) to a maximum of 27°C (81°F), with an average of 15°C (60°F). The month experiences significant rainfall, totaling 161 mm (6.3 in) over 15 days, alongside a humidity level of 74%. In contrast, March exhibits much chillier conditions, with temperatures dipping as low as -17°C (2°F) and averaging around 5°C (41°F) before reaching a maximum of 21°C (70°F). Although March sees less precipitation, at 118 mm (4.7 in) over 11 days, the humidity is slightly higher at 82%. For a detailed look at March weather in Kobarid, you can visit Kobarid weather in March.

In comparing the weather between September and April, we observe significant differences in temperature and seasonal characteristics. September boasts a more moderate climate with average temperatures ranging from a chilly 2°C (35°F) at night to a warm 27°C (81°F) during the day, while April experiences cooler nights, with temperatures dropping as low as -8°C (17°F) and peaking at a comfortable 25°C (78°F). Both months receive similar levels of precipitation, around 161 mm (6.3 in), but September sees rain spread over 15 days compared to April's 13 days, indicating slightly more frequent rainfall in the early fall. Additionally, the humidity levels in both months are relatively high, with September at 74% and April slightly higher at 79%, adding a damp chill to the spring air. For a more detailed look at April's conditions, check out Kobarid weather in April.

In comparing the weather between September and May, both months exhibit similar humidity levels, at 74%, which contributes to a generally moist atmosphere. However, September tends to have warmer temperatures, ranging from a minimum of 2°C (35°F) to a maximum of 27°C (81°F), while May's temperatures range from a minimum of 1°C (33°F) to a maximum of 25°C (77°F). Additionally, September experiences less total precipitation, with 161 mm (6.3 in) over 15 days, compared to May's 219 mm (8.6 in) over 22 days. For more detailed insights into the weather during May, you can refer to Kobarid weather in May.

The weather in September and June presents a noticeable contrast, both in temperature and precipitation patterns. In June, the temperatures range from a minimum of 5°C (41°F) to a maximum of 34°C (93°F), with an average of 19°C (66°F) and slightly lower precipitation at 134 mm (5.3 in) over 15 days. This makes June generally warmer and drier than September, which has a minimum temperature of 2°C (35°F), an average of 15°C (60°F), and a higher maximum of 27°C (81°F), coupled with increased precipitation of 161 mm (6.3 in) also over 15 days. The humidity remains relatively consistent, with September measuring 74% and June at 75%. For more detailed information on weather specifics, you can check Kobarid weather in June.

The weather in September experiences a notable shift compared to July, with cooler temperatures and increased precipitation. September's average temperature is around 15°C (60°F), dipping to a minimum of 2°C (35°F), while July remains warmer with an average of 20°C (68°F) and a minimum temperature of 11°C (51°F). Although both months share a similar humidity level of 74%, September sees more rainfall, totaling 161 mm (6.3 in) over 15 days, compared to July's 123 mm (4.9 in) over 16 days. For a more detailed look at July’s weather, you can visit Kobarid weather in July.

In comparison to August, September experiences a notable drop in temperature, with minimums falling to 2°C (35°F) and an average of 15°C (60°F), compared to August's milder minimum of 8°C (46°F) and average of 20°C (69°F). The maximum temperatures in September also decline significantly, peaking at 27°C (81°F), whereas August sees highs of 33°C (92°F). Additionally, September brings increased precipitation, totaling 161 mm (6.3 in) over 15 days, which is higher than August's 137 mm (5.4 in) under similar conditions. Humidity levels rise slightly in September to 74%, compared to August's 68%. For a detailed look at the weather patterns in August, you can check Kobarid weather in August.

September and October present a notable transition in weather patterns. In September, temperatures range from a mild 2°C (35°F) at night to a pleasant average of 15°C (60°F) during the day, peaking at a warm 27°C (81°F). The month experiences significant rainfall, with about 161 mm (6.3 in) over approximately 15 days, contributing to a relatively comfortable humidity level of 74%.

In contrast, October sees cooler temperatures, with minimums dipping to 0°C (33°F) and an average of 11°C (51°F), peaking at a maximum of 22°C (71°F). Precipitation remains similar, at 155 mm (6.1 in) over about 10 days, but humidity increases to 88%, creating a noticeably damp atmosphere. For a detailed view of the weather in Kobarid throughout October, you can refer to this link: Kobarid weather in October.

September and November exhibit striking contrasts in weather. In September, temperatures range from a comfortable minimum of 2°C (35°F) to a pleasant maximum of 27°C (81°F), with an average of 15°C (60°F). The month is characterized by substantial rainfall, totaling 161 mm (6.3 in) over about 15 days and a humidity level of 74%. In contrast, November experiences much colder temperatures, with a minimum dipping to -8°C (18°F) and an average of only 6°C (43°F), though it can still reach a maximum of 17°C (62°F). Rainfall increases to 205 mm (8.1 in) across 11 days, accompanied by a rise in humidity to 90%. For more details, you can explore Kobarid weather in November.

In September, the weather is relatively mild with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 27°C (81°F), averaging around 15°C (60°F). The month experiences significant precipitation, totaling 161 mm (6.3 in) over approximately 15 days, with humidity levels at 74%. In contrast, December brings much colder conditions, with temperatures ranging from -11°C (12°F) to a maximum of 11°C (53°F) and an average of just 1°C (34°F). Precipitation increases slightly to 191 mm (7.5 in), but occurs over only 10 days, and humidity rises to 89%. For more information on December weather, check out this link: Kobarid weather in December.

Compare Kobarid's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Kobarid

As summer fades into autumn, September in Kobarid brings a notable transition in weather. With temperatures dipping from the summer highs, the pleasant average around 15°C invites a crisper feel to the air, contrasting sharply with the warmer months. The chance of rain increases, evidenced by an average of 161 mm of precipitation over about half the month, making it one of the wetter times of the year. This blend of cooler temperatures and higher humidity, averaging around 74%, sets the stage for the stunning fall foliage that Kobarid is known for. If you're curious about the overall climate throughout the year, be sure to check out Kobarid Climate.