Last updated: August 21, 2025
In September, Borovets, Bulgaria experiences a remarkable temperature range, with highs reaching 32°C (90°F) and lows dipping to -1°C (31°F). The average temperature settles at a comfortable 18°C (64°F), making it a pleasant time for outdoor activities. This month also sees a moderate precipitation amount of 28 mm (1.1 in) across three rainy days, complemented by a humidity level of 57%. Visitors can enjoy the crisp mountain air while exploring the lush landscapes and scenic views, making September a delightful time to experience Borovets.
In September, Borovets experiences a fascinating transition as summer wanes and autumn approaches. With a minimum temperature dipping to -1°C (31°F) and an average that reaches a comfortable 18°C (64°F), the weather feels pleasantly mild, ideal for outdoor activities. On warmer days, the maximum temperature can rise to 32°C (90°F), offering a final taste of summer warmth. This month is characterized by a notable shift, as the peaks begin to cool, providing a refreshing respite from the intense heat of August, while still allowing for enjoyable hikes and exploration of the stunning alpine landscape. As you prepare for your visit, expect the days to be warm and the nights to start their descent toward brisk autumn air, making September a delightful time in Borovets.
September in Borovets, Bulgaria, marks a transition into the autumn season with an average precipitation of 28 mm (1.1 in), spread over just 3 days. This slight uptick in rainfall compared to the dry summer months of July and August, where precipitation plummeted to 37 mm (1.4 in) and 23 mm (0.9 in) respectively, signals the shifting weather patterns as the region prepares for cooler conditions. The decrease in rainy days during September indicates a more stable climate, yet still allows for refreshing bursts of moisture that support the lush landscapes. As the summer's warmth fades, this modest rainfall sets the stage for October’s increase to 54 mm (2.1 in), reminding visitors that Borovets is a place of dynamic seasonal changes.
In September, Borovets experiences a notable shift in humidity, averaging 57%, a slight uptick from the dry summer months, where humidity dipped to an impressive low of 47% in August. This transitional phase signals a move away from the warm, arid conditions of the peak summer, as the moisture begins to accumulate in the atmosphere again. However, it remains significantly lower than the chillier, more humid months of late fall and winter, where figures rise again, reaching 85% in November and peaking at 88% in January. This September climate sets the stage for a refreshing yet comfortable start to autumn in the beautiful Bulgarian mountains.
As September arrives in Borovets, the UV Index starts to taper off slightly from the peak summer months, reflecting a very high levels of UV exposure with an index of 8. This means that while the summer sun is beginning to relent, it's still crucial to take precautions; in just 15 minutes, unprotected skin can be at risk of burning. The trend over the year shows a gradual increase from the low winter months to the intense highs of late spring and summer, reaching its zenith in July and August. However, September continues to maintain significant UV strength, reminding residents and visitors alike to stay sun-smart. For more details on the UV index and to plan your outdoor activities safely, visit Borovets UV Index.
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As summer gracefully transitions into autumn, September in Borovets, Bulgaria, offers a splendid 342 hours of sunshine. This marks a gentle decline from the peak summer months, particularly July, which basks in an impressive 424 hours of sunlight. However, September retains a warm glow, reflecting the lingering warmth of summer while embracing the crispness of fall. This month significantly outshines the dreary winter months ahead, such as January and February, with their mere 178 and 235 hours respectively. The gradual descent in daylight paves the way for vibrant fall foliage, making September a delightful time for exploration and outdoor activities in this beautiful mountain resort.
In Borovets, Bulgaria, September offers a notable shift in weather patterns as summer transitions to autumn. With a 56% chance of sunny days, it's one of the more favorable months for enjoying the outdoors, closely following the solar highs of July and August. This period marks a significant drop in sunshine from the peak summer months but maintains a pleasant level of brightness, reflecting a balanced climate that many outdoor enthusiasts find inviting. As autumn approaches, the sun's presence becomes a welcomed sight, bridging the vibrant warmth of summer with the crispness of fall.
As the summer days begin to fade, September in Borovets, Bulgaria, offers a graceful transition with 12 hours of daylight, providing a satisfying blend of warmth and crispness. Following the peak of summer in June, where daylight stretches to its maximum of 15 hours, the days gradually shorten, leading to a more moderate length in September. This decline is part of a larger trend, where daylight duration peaks in the summer months with 14 hours in July and gently tapers down to 11 hours by October. The shift from the abundant light of earlier months to the cozy ambiance of early autumn gives Borovets a unique charm, inviting both relaxation and reflection as the vibrant foliage begins to emerge.
As summer fades, September in Borovets, Bulgaria, brings a subtle shift in the winds, with average speeds tapering to 1.6 m/s (4 mph). This gentle breeze mirrors the transition of the seasons, marking a notable decrease from the more blustery early months of the year, when winds were more robust. The trend of declining wind speeds continues into October, suggesting a calm before the winter chill returns in November. As the vibrant hues of autumn begin to paint the landscape, the soft winds create a tranquil atmosphere, inviting visitors to bask in the serene beauty of this mountain retreat.
Weather in Borovets varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Borovets, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit stark contrasts in weather conditions. In September, temperatures range dramatically from a chilly minimum of -1°C (31°F) to a warm maximum of 32°C (90°F), with an average of 18°C (64°F). The month sees moderate precipitation of 28 mm (1.1 in) over approximately 3 days and a comfortable humidity level of 57%. In contrast, January is characterized by much colder temperatures, with a minimum of -23°C (-9°F) and a maximum of only 13°C (55°F), averaging around 0°C (33°F). This winter month experiences higher precipitation at 63 mm (2.5 in) spread over 9 days and significantly increased humidity at 88%. For further insights into the specifics of January's climate, check out Borovets weather in January.
September and February present stark contrasts in weather. September boasts a much warmer temperature range, with minimums of -1°C and maximums reaching up to 32°C, while the average temperature is a comfortable 18°C. In contrast, February is characterized by much colder conditions, featuring minimum temperatures as low as -20°C and a modest maximum of 18°C, resulting in an average of just 4°C. Additionally, February experiences higher precipitation levels at 55 mm over 8 days, compared to September's 28 mm over 3 days, and it also has increased humidity at 83% versus September’s 57%. For those considering a trip, detailed insights can be found in the link: Borovets weather in February.
In comparing the weather of September and March, it's evident that there is a significant contrast. September boasts milder temperatures, with averages around 18°C (64°F) and a maximum of 32°C (90°F), accompanied by relatively low precipitation of 28 mm (1.1 in) over just 3 days. In stark contrast, March experiences much colder conditions, with averages plummeting to 6°C (43°F) and maximums reaching only 23°C (73°F). Additionally, March is considerably wetter, with 93 mm (3.6 in) of precipitation spread across 11 days, contributing to higher humidity levels of 81%. For more specifics on the weather during this period, you can refer to Borovets weather in March.
September and April present quite contrasting weather conditions. In September, temperatures can range from a chilly minimum of -1°C (31°F) to a warm maximum of 32°C (90°F), with an average of 18°C (64°F). The month sees relatively low precipitation at 28 mm (1.1 in) spread over just 3 days and a humidity level of 57%. In contrast, April experiences cooler temperatures, with a minimum of -5°C (23°F) and a maximum of 26°C (79°F), averaging 10°C (51°F). This month is generally wetter, receiving 64 mm (2.5 in) of rainfall over 9 days, combined with higher humidity at 71%. For more detailed insights on the April climate, check out Borovets weather in April.
When comparing the weather in September and May, we can see notable differences in both temperature and precipitation levels. September boasts a greater temperature range, with minimums dropping to -1°C (31°F) and maximums hitting 32°C (90°F), averaging around 18°C (64°F). In contrast, May's temperatures are milder, with minimums at 2°C (35°F) and maximums of 29°C (85°F), averaging 15°C (59°F). Additionally, May experiences higher precipitation levels, totaling 57 mm (2.3 in) over 10 days, compared to September's 28 mm (1.1 in) across just 3 days. The humidity is also more pronounced in May at 74%, compared to September's 57%. For further details on the climate specifics during this vibrant month, visit Borovets weather in May.
In comparing the weather between September and June, we observe notable differences in temperature and precipitation. September experiences a wider temperature range, with a minimum of -1°C (31°F) and a maximum of 32°C (90°F), resulting in an average temperature of 18°C (64°F). In contrast, June has a more moderate temperature range, with a minimum of 5°C (41°F) and a maximum of 34°C (93°F), averaging 19°C (66°F).
Precipitation also varies significantly, as September sees less rainfall at 28 mm (1.1 in) over just 3 days, while June has heavier rainfall totaling 58 mm (2.3 in) across 9 days. Humidity levels are slightly higher in June at 63%, compared to September's 57%. For more details on June weather specifics, check out Borovets weather in June.
In comparing the weather between July and September, we observe notable differences in temperature and precipitation. July experiences warmer temperatures, with a minimum of 10°C (50°F) and a maximum of 35°C (96°F), while September's range is cooler, with temperatures dipping to a minimum of -1°C (31°F) and reaching a maximum of 32°C (90°F). Average temperatures are also higher in July at 21°C (71°F) compared to September's 18°C (64°F). Additionally, July sees more rainfall, accumulating 37 mm (1.4 in) over five days, whereas September has less precipitation at 28 mm (1.1 in) across only three days. Despite the slightly higher humidity in July at 60% compared to September's 57%, both months offer distinct weather experiences. For those interested in July's conditions, more information can be found in the link: Borovets weather in July.
In comparing the weather of September and August, September shows a notable drop in minimum temperatures, plunging to -1°C (31°F), while August maintains a milder minimum of 9°C (49°F). The average temperature in September is 18°C (64°F), significantly lower than August's 22°C (72°F), and September's maximum temperature reaches 32°C (90°F), compared to August's peak of 36°C (97°F). Additionally, September experiences slightly more precipitation, with 28 mm (1.1 in) over 3 days, compared to August's 23 mm (0.9 in) across 4 days, although humidity levels are higher in September at 57% versus August's 47%. For more detailed information on weather in August, you can check Borovets weather in August.
In comparing the weather between September and October, we see a notable shift in both temperature and precipitation. September boasts a much warmer average temperature of 18°C (64°F) with highs reaching up to 32°C (90°F), while October experiences a cooler average of 12°C (54°F) and a maximum of only 27°C (82°F). Moreover, October sees an increase in precipitation, with 54 mm (2.1 in) over 5 days compared to September's 28 mm (1.1 in) across just 3 days. The humidity also rises significantly from 57% in September to 76% in October, contributing to a distinctly more damp and cooler atmosphere. For more detailed insights about October weather, you can check Borovets weather in October.
September and November present strikingly different weather patterns. In September, temperatures range from a minimum of -1°C (31°F) to a maximum of 32°C (90°F), with an average of 18°C (64°F). The month sees relatively low precipitation at 28 mm (1.1 in) over just 3 days, accompanied by a moderate humidity of 57%. In contrast, November brings a significant drop in temperatures, with minimums plummeting to -10°C (15°F) and averages around 7°C (46°F), while maximums reach 24°C (75°F). This month experiences higher precipitation, totaling 53 mm (2.1 in) across 7 days, and the humidity also rises to 85%. For a detailed look at November weather, check out Borovets weather in November.
In September, the weather is generally warm, with average temperatures around 18°C (64°F) and maximums reaching up to 32°C (90°F), providing a pleasant atmosphere for outdoor activities. The month experiences minimal precipitation, only about 28 mm (1.1 in) over approximately three days, along with relatively moderate humidity levels at 57%. In contrast, December brings a stark shift with much colder temperatures, averaging just 3°C (38°F), and with nighttime lows plunging to -12°C (11°F). Precipitation significantly increases to 98 mm (3.9 in), occurring over 11 days, accompanied by higher humidity at 87%. This makes for a damp, wintry environment typical of the season. For a more detailed overview of December conditions, you can check out Borovets weather in December.
As September unfolds in Borovets, the weather presents a delightful transition from the warmth of summer to the cooler embrace of autumn. The average temperature invites visitors to enjoy outdoor activities, while the occasional chill serves as a reminder of the approaching winter season. With only a handful of precipitation days and moderate humidity, September stands out as a relatively dry month, making it an ideal time for hiking and exploring the stunning mountain landscapes. This unique blend of mild temperatures and crisp air sets September apart from the hotter summer months, allowing visitors to experience the beauty of Borovets in a refreshing light. For a complete understanding of what to expect throughout the year, visit Borovets Climate.