Last updated: August 28, 2025
Experience the charming September weather of Herceg Novi, Montenegro, where the Mediterranean climate offers a delightful transition into autumn. This month boasts maximum temperatures of 29°C (85°F) and an inviting average of 20°C (68°F), perfect for outdoor adventures and seaside relaxation. As temperatures dip to a pleasant minimum of 9°C (48°F) at night, the cool evenings provide a refreshing end to warm days. While precipitation is moderate at 91 mm (3.6 in) over 8 days, the vibrant atmosphere remains largely sunny, complemented by a comfortable humidity level of 65%. Embrace the beauty of Herceg Novi this September, where stunning landscapes and mild weather await!
In September, Herceg Novi welcomes the early embrace of autumn with pleasantly warm temperatures. The month sees a minimum of 9°C (48°F), while the average hovers around 20°C (68°F), peaking at a maximum of 29°C (85°F). This slight dip in temperature from the sizzling summer months provides a refreshing contrast, making it an ideal time for outdoor activities. With the warm days still lingering, visitors can enjoy the beautiful coastal scenery and vibrant local culture without the summer crowds. As the month progresses, the balance of warmth and cooling breezes creates a comfortable atmosphere, inviting all to explore the charms of this stunning Montenegrin town.
In September, Herceg Novi experiences a notable transition in its weather patterns, with precipitation amounting to 91 mm (3.6 in) over approximately 8 days of rain. This marks an uptick from the drier summer months, where July and August saw minimal rainfall at 27 mm (1.1 in) and 44 mm (1.7 in), respectively. September's rainfall, while still moderate, serves as a precursor to the much wetter autumn season, with October's average expected to rise significantly to 149 mm (5.9 in). The gradual increase in precipitation paves the way for more lush landscapes and a refreshing change in the climate, reflecting the shift towards cooler weather while still retaining traces of the summer warmth.
As September rolls into Herceg Novi, Montenegro, the lingering warmth of summer begins to transition into a milder ambiance. This month experiences a notable increase in humidity, rising to 65%—a shift from the low point of 53% in August. While this is still relatively comfortable compared to the colder months ahead, which see humidity levels spike again—particularly in November and December at 85% and 86% respectively—it reflects a gentle return to the coastal air's natural moisture content after the driest summer months. Overall, September serves as a bridge, rediscovering humidity levels that invite pleasant evenings by the Adriatic Sea, before ushering in the cooler and more humid autumn weather.
As summer transitions into autumn in Herceg Novi, Montenegro, the September UV Index stands at 7, indicating a high exposure category with a burn time of just 25 minutes. This marks a slight decrease from the peak levels of 10 seen in July, yet the sun maintains its strength, reminding sun-seekers to exercise caution. Despite the drop, September offers a delightful climate for outdoor activities, as the UV index remains robust compared to the earlier months of the year. With January's low of 2 and the moderate autumn months of October and November, the UV levels in Herceg Novi reflect a clear pattern—high during the peak summer months, tapering off as the year progresses. Stay informed about the UV conditions with this handy guide: Herceg Novi UV Index.
UV Risk Categories
As summer wanes, September in Herceg Novi, Montenegro still basks in a generous 346 hours of sunshine, marking a delightful transition from the peak July and August months. This sun-kissed ambiance lingers from the vibrant 417 hours of June, gradually tapering but still offering plenty of warm, enjoyable days for visitors. While the days grow shorter heading into October with 314 hours, September remains a golden opportunity to relish the Mediterranean charm, where the warm glow of late summer tempts both locals and tourists to soak up the last rays before autumn takes hold.
In Herceg Novi, Montenegro, September offers a promising 57% chance of sunny weather, making it a delightful time to visit. This month typically serves as a transition between the vibrant summer sun and the cooler autumn breeze. Notably, the likelihood of sunshine remains high, especially when compared to the cooler months of November and December, which dip to 28% and 43%, respectively. With July and August boasting peak sunshine probabilities of 78% and 79%, September still holds its own as a suitable time for outdoor activities, thanks to lingering warmth without the overwhelming summer heat. Whether you're planning a leisurely stroll along the Adriatic or exploring the charming streets, September provides a balanced blend of sun and comfortable temperatures.
As summer transitions to fall in Herceg Novi, Montenegro, September brings a refreshing shift in daylight duration, with 12 hours of daylight gracing the skies. This marks a gradual decline from the peak of 15 hours in June and 14 hours in July, as the days slowly shorten. The progressive decrease continues through August, landing at 13 hours, before settling into September’s golden glow. This month exemplifies a beautiful balance, allowing residents and visitors alike to enjoy a rich blend of warm afternoons and cooler evenings, before the daylight dims further in October to 11 hours. The rhythm of changing seasons is beautifully captured in this diminishing light, inviting exploration and reflection in the enchanting landscapes of Herceg Novi.
As summer fades into autumn, September in Herceg Novi brings a gentle shift in the cool breezes sweeping through its picturesque coastline. With an average wind speed of 2.0 m/s (4 mph), September is notably calmer compared to the energetic gusts of earlier months. This gradual decrease in wind speeds from the summer months, where averages lingered around 2.1 to 2.3 m/s (5 mph), sets a tranquil stage for the onset of fall. The transition in the atmosphere invites locals and visitors alike to enjoy the stunning vistas without the distraction of blustery winds, making it an ideal time for leisurely strolls along the beautiful promenade or sipping coffee while soaking in the vibrant hues of the changing season.
Weather in Herceg Novi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Herceg Novi, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present starkly contrasting weather conditions. In September, temperatures range from a mild 9°C (48°F) at night to a warm average of 20°C (68°F) and a high of 29°C (85°F), making it a comfortable month with a mean humidity of 65%. Conversely, January brings much colder climate, with temperatures dropping as low as -10°C (14°F) at night, an average of 5°C (41°F), and a high of 15°C (59°F). Precipitation is more significant in January, totaling 114 mm (4.5 in) over 10 days, compared to September's 91 mm (3.6 in) over 8 days, and the humidity rises to 88%. For a detailed look at the winter weather specifics, you can check out Herceg Novi weather in January.
September and February present contrasting weather patterns in Herceg Novi. In September, temperatures range from a mild 9°C (48°F) at night to a warm 29°C (85°F) during the day, with an average of 20°C (68°F). The month experiences moderate precipitation of 91 mm (3.6 in) over about 8 days, paired with a comfortable humidity level of 65%. In stark contrast, February is much colder, with minimum temperatures dipping to -5°C (24°F) and a daytime high of 18°C (64°F), averaging around 7°C (46°F). This month sees much higher precipitation at 171 mm (6.7 in) over 11 days, and a significantly higher humidity of 82%. For more detailed weather insights, check out Herceg Novi weather in February.
When comparing the weather in September and March, notable differences emerge. September enjoys milder temperatures, with minimums around 9°C (48°F) and maximums reaching up to 29°C (85°F), creating a pleasant average of 20°C (68°F). In contrast, March is significantly cooler, with minimum temperatures dipping to -2°C (28°F) and an average of only 9°C (48°F). Additionally, March experiences higher precipitation levels at 164 mm (6.5 in) over 12 days, while September has less rain, totaling 91 mm (3.6 in) across 8 days. The humidity also rises in March to 79%, compared to 65% in September. For more details, you can check Herceg Novi weather in March.
September and April present distinct weather patterns, each with its unique characteristics. In September, temperatures range from a minimum of 9°C (48°F) to a maximum of 29°C (85°F), with an average of 20°C (68°F), offering a pleasant warmth. However, with 91 mm (3.6 in) of precipitation over 8 days, September is relatively drier compared to April. In contrast, April's temperatures are cooler, peaking at 24°C (76°F) and averaging only 12°C (54°F), with a minimum of 1°C (34°F). The month sees higher precipitation levels of 124 mm (4.9 in) spread over 11 days and increased humidity at 75%. For a more detailed look at April weather, you can visit Herceg Novi weather in April.
When comparing the weather in September and May, we can see notable differences in temperature and precipitation. September tends to have warmer temperatures, with averages around 20°C (68°F) and a maximum of 29°C (85°F), while May's average is cooler at 16°C (61°F) and peaks at 26°C (80°F). In terms of precipitation, May receives more rain, totaling 126 mm (5.0 in) over 14 days compared to September's 91 mm (3.6 in) over just 8 days. Additionally, May experiences higher humidity levels at 74%, compared to September's 65%. For further details, you can check out Herceg Novi weather in May.
In comparing the weather of September and June, both months experience similar average temperatures, around 20°C (68°F). However, June can be slightly warmer, with maximum temperatures reaching up to 32°C (90°F), compared to September's peak of 29°C (85°F). Precipitation levels are higher in September, with 91 mm (3.6 in) over 8 days, while June sees less rain at 64 mm (2.5 in) across 11 days. Humidity levels are fairly consistent, averaging 65% in September and 66% in June. For more detailed weather information on June, refer to Herceg Novi weather in June.
When comparing the weather in September to July, we notice distinct differences in temperature, precipitation, and humidity. September experiences a wider temperature range with minimums of 9°C (48°F) and maximums reaching 29°C (85°F), averaging around 20°C (68°F). In contrast, July is warmer, with minimums of 15°C (59°F) and maximums hitting 34°C (93°F), resulting in a comfortable average of 23°C (74°F). Precipitation also varies significantly; September sees 91 mm (3.6 in) over 8 days, while July enjoys much drier conditions with only 27 mm (1.1 in) over 4 days. Additionally, September has a higher humidity level at 65%, compared to July's 59%. For more details on July weather, you can check Herceg Novi weather in July.
In comparing the weather of September and August, September tends to be cooler with an average temperature of 20°C (68°F) compared to August's warmer average of 24°C (76°F). Notably, September experiences a broader temperature range, with minimums dropping to 9°C (48°F) and maximums reaching up to 29°C (85°F). In contrast, August's minimums start at a milder 16°C (62°F), peaking at a notable 34°C (93°F). Precipitation in September increases significantly, totaling 91 mm (3.6 in) over 8 days, whereas August sees much less rainfall at 44 mm (1.7 in) across 7 days. Additionally, September is more humid at 65%, compared to the 53% humidity prevalent in August. For a detailed look at August weather, visit Herceg Novi weather in August.
In September, the weather tends to be warmer with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 29°C (85°F), averaging around 20°C (68°F). The month sees about 91 mm (3.6 in) of precipitation over 8 days, accompanied by a relative humidity of 65%. In contrast, October brings cooler temperatures, with a minimum of 6°C (42°F) and a maximum of 24°C (75°F), averaging 15°C (59°F). This month experiences increased precipitation at 149 mm (5.9 in) over the same 8 days, along with higher humidity levels of 78%. For a more detailed look at October's weather patterns, check out Herceg Novi weather in October.
September and November display stark contrasts in weather patterns. September tends to be warmer, with temperatures ranging from a minimum of 9°C (48°F) to a pleasant average of 20°C (68°F), peaking at a maximum of 29°C (85°F). Precipitation during this month is relatively low at 91 mm (3.6 in) over 8 days, with humidity at 65%. In contrast, November brings much cooler temperatures, with a minimum of 1°C (34°F), an average of 12°C (54°F), and a maximum of 22°C (71°F). Additionally, November experiences significantly more rainfall, totaling 293 mm (11.5 in) over 12 days, and its humidity increases to 85%. For more detailed information, you can check out Herceg Novi weather in November.
September and December present stark contrasts in weather. In September, temperatures are pleasantly warm, ranging from a minimum of 9°C (48°F) to a maximum of 29°C (85°F), with an average of 20°C (68°F). The month sees moderate precipitation at 91 mm (3.6 in) over approximately 8 days and a humidity level of 65%. In contrast, December introduces a chill, with temperatures dropping to a minimum of -1°C (30°F) and an average of 7°C (46°F), peaking at 16°C (61°F). This month experiences significantly increased rainfall, totaling 252 mm (9.9 in) across 15 days, accompanied by higher humidity at 86%. For more detailed insights, check Herceg Novi weather in December.
As summer wanes, September in Herceg Novi offers a delightful transition with warm temperatures that typically peak around 29°C (85°F), making it more comfortable than the sweltering heights of July and August. The average temperature settles at a pleasant 20°C (68°F), perfectly suiting outdoor activities and exploration. While the month does see some rain—approximately 91 mm over about 8 days—the humidity averages a moderate 65%, allowing for a refreshingly vibrant atmosphere. This unique blend of warmth and occasional showers distinguishes September from other months, creating an ideal time for visitors to experience the beauty of Herceg Novi. For a deeper dive into the region's weather patterns, check out Herceg Novi Climate.