Last updated: August 21, 2025
Nesebar, Bulgaria in September boasts a delightful average temperature of 21°C (69°F), with temperatures reaching a pleasant maximum of 30°C (86°F). While the evenings can be refreshing with a minimum temperature of 10°C (50°F), visitors can expect a moderate humidity level of 63%. Rainfall is relatively light, occurring on approximately 5 days throughout the month, totaling around 22 mm (0.9 in) of precipitation. This blend of warmth and mild weather makes September an ideal time to explore the rich history and stunning landscapes of Nesebar.
In September, Nesebar transitions gracefully from summer to autumn, offering a delightful climate that still embodies the warmth of the season. With minimum temperatures around 10°C (50°F) and averaging 21°C (69°F), the days remain pleasantly mild, perfect for enjoying the last moments by the sea. The maximum temperatures can reach up to 30°C (86°F), making it one of the best months for outdoor activities. This gradual cooling trend, compared to the peak of summer in July and August, still allows visitors to relish warm beach days while experiencing the charm of the area as the crowds begin to thin. Thus, September serves as an ideal time for travelers seeking both warmth and a more tranquil atmosphere in beautiful Nesebar.
September in Nesebar, Bulgaria, marks a gentle transition in the weather, characterized by a modest precipitation amount of 22 mm (0.9 in) across an average of 5 rainy days. This slight uptick in rainfall follows the sun-soaked month of August, which typically sees minimal precipitation at just 15 mm (0.6 in) over a mere 3 days. Although September's moisture levels are lower than the summer months, they are notably higher than those experienced later in the fall. As a result, the early days of autumn in Nesebar provide a refreshing balance of sun and occasional rain, perfect for enjoying the picturesque landscape and preparing for the cooler weather that lies ahead.
In September, Nesebar, Bulgaria, experiences a slight uptick in humidity, reaching 63% after the summer months, when it hovered at a refreshing 60% in August. This transition reflects the gradual shift from the drier, warm days of summer to the wetter, cooler climate of fall. As autumn approaches, humidity begins to rise again, hinting at the 76% recorded in October. Overall, September's humidity continues the trend of the year, where the warmest months coincide with the lowest humidity levels, while winter months see a consistent increase, with January and December being notably high at 84%. This ebb and flow not only influences the comfort level of residents and visitors but also paints a picture of Nesebar's vibrant seasonal changes.
As September unfolds in Nesebar, Bulgaria, the UV Index reflects a shift from the intense summer months, dropping to 7, which indicates a high exposure level. As vacationers enjoy the lingering warmth of the season, the recommended burn time increases to 25 minutes, allowing for a more leisurely outdoor experience compared to the sweltering 15 minutes of summer. This transitional month bridges the gap between summer's peak and autumn’s arrival, maintaining a vibrant outdoor atmosphere while prompting sun safety awareness. For more detailed insights, explore the Nesebar UV Index to plan your sun exposure wisely.
UV Risk Categories
As summer gracefully gives way to autumn, September in Nesebar, Bulgaria, still basks in a generous amount of sunshine, with 341 hours of glorious light. This marks a subtle decline from the peak of July and August, where sunlight graced the city for over 400 hours. The transition is gentle, as September retains a robust balance of warmth and sunlight, lingering longer than the cooler months that follow. The gradual tapering of sunny days hints at the approaching winter, yet continues to offer plenty of opportunities to enjoy the charming coastal beauty and rich history of this UNESCO World Heritage site. With each passing month, the rhythm of light weaves a captivating story of change, preparing travelers for both days of golden warmth and the inviting chill of autumn air.
As summer transitions into autumn, September in Nesebar, Bulgaria, witnesses a notable shift in sunny weather probabilities. With a 53% chance of sunlight, this month enjoys more favorable conditions than many of the cooler months, marking a significant increase from July and August's highs. While the likelihood of sunny days dips compared to the peak summer months, September still provides a delightful blend of warmth and clarity, making it an ideal time for outdoor exploration. Visitors can revel in the lingering summer vibes as they soak up what’s left of the sunny days, a refreshing contrast to the overcast tendencies that follow in October and November.
As summer gracefully transitions into autumn, September in Nesebar, Bulgaria, boasts an inviting 12 hours of daylight. This month represents a gentle decline from the sun-soaked heights of June and July, which enjoy a generous 15 and 14 hours respectively. The shift from the vibrant days of late summer is palpable, yet September retains a warm charm, as the daylight lingers longer than the autumn months that follow. Travelers can bask in this abundant light, soaking up the last of the summer warmth before the days shorten further in October and November, each offering just 11 hours and 9 hours of sunlight. Overall, September serves as a beautiful bridge between the lively summer season and the quieter, reflective days of fall.
As summer fades away, September in Nesebar welcomes a gentle shift in the breeze, characterized by an average wind speed of 3.9 m/s (9 mph). This notable increase from the languid winds of June and August, which lingered around 2.8 to 3.2 m/s, hints at the transition into autumn. Although the wind picks back up slightly, it’s still mellow compared to the stronger gusts anticipated in October, where speeds rise to 4.6 m/s (10 mph). Overall, September's winds create a perfect blend for outdoor activities, offering a refreshing transition while maintaining a pleasant warmth that evokes the lingering spirit of summer. As the season gradually changes, one can truly feel nature's rhythms in this charming Bulgarian coastal town.
Weather in Nesebar varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Nesebar, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present strikingly contrasting weather conditions. In September, temperatures range from a mild 10°C (50°F) at night to a warm 30°C (86°F) during the day, with an average of 21°C (69°F). The month sees relatively low precipitation, with about 22 mm (0.9 in) falling over five days, and humidity levels hovering around 63%. In sharp contrast, January experiences much colder temperatures, with minimums plunging to -10°C (14°F) and a chilly average of just 4°C (39°F). Precipitation increases significantly to 66 mm (2.6 in) over eight days, coupled with higher humidity averaging 84%. For a detailed look at January weather in Nesebar, you can visit Nesebar weather in January.
September and February present stark contrasts in weather patterns. September enjoys milder temperatures, with averages around 21°C (69°F) and a maximum of 30°C (86°F), making it a pleasant time with relatively low precipitation at 22 mm (0.9 in) over about 5 days. In contrast, February experiences colder conditions, with an average temperature of 6°C (42°F) and lows dipping to -5°C (23°F). The month sees significantly more precipitation at 48 mm (1.9 in) over 7 days, resulting in higher humidity levels at 81%. For a detailed look at February weather, you can check Nesebar weather in February.
Comparing the weather between September and March reveals a notable shift in temperatures and conditions. In September, temperatures range from a comfortable 10°C (50°F) at night to a warm 30°C (86°F) during the day, with an average of 21°C (69°F). The month sees relatively low precipitation of 22 mm (0.9 in) over just 5 days and a humidity level of 63%. In contrast, March experiences much cooler temperatures, with nighttime lows dropping to -9°C (16°F) and daytime highs reaching only 19°C (67°F), averaging around 7°C (45°F). The month is also wetter, with precipitation totaling 57 mm (2.3 in) over 9 days and higher humidity at 79%. For those interested in specific conditions during this time, you can check out Nesebar weather in March.
September typically enjoys warmer temperatures than April, with averages around 21°C (69°F) compared to April's 10°C (51°F). While September can reach a maximum of 30°C (86°F), April's peak is more modest at 23°C (73°F). However, April experiences higher precipitation levels, averaging 40 mm (1.6 in) across about 7 days, compared to September's 22 mm (0.9 in) over 5 days. Additionally, April's humidity is slightly higher at 75%, opposed to September's 63%. For more detailed weather patterns, you can explore Nesebar weather in April.
The weather in September is generally warmer and drier compared to May. With average temperatures reaching 21°C (69°F) and max temperatures hitting 30°C (86°F), September enjoys a pleasant climate, accompanied by only 22 mm (0.9 in) of precipitation over about five days. In contrast, May has cooler temperatures, with averages around 16°C (62°F) and maximums of 27°C (81°F), along with higher humidity at 77% and more rainfall, totaling 46 mm (1.8 in) over eight days. For more detailed information, you can check Nesebar weather in May.
September and June offer comparable average temperatures, with both months reaching around 21°C (70°F), while the maximum temperatures are nearly identical at 30°C (86°F) in September and 30°C (87°F) in June. However, September tends to be slightly drier, with only 22 mm of precipitation over 5 days compared to June's 82 mm over 14 days, indicating a much wetter month with increased humidity at 71% in June versus 63% in September. For a more detailed view of the June climate, you can check out Nesebar weather in June.
In comparing the weather of September and July, we see distinct differences in temperature and precipitation. September offers a more moderate climate, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 30°C (86°F), while July tends to be hotter, boasting averages from 16°C (62°F) to 33°C (91°F). Additionally, July experiences significantly higher rainfall, with 50 mm (2.0 in) over 7 days compared to September's 22 mm (0.9 in) over just 5 days. Humidity levels are also slightly elevated in July at 69%, compared to 63% in September. For those interested in detailed weather patterns, check out Nesebar weather in July.
In comparing the weather of September to that of August, September presents a noticeable decrease in overall temperatures, with a minimum of 10°C (50°F) and a maximum of 30°C (86°F), compared to August's warmer range of 16°C (62°F) to 33°C (91°F). The average temperature in September is also slightly lower at 21°C (69°F) than the 24°C (76°F) average in August. Additionally, September experiences a modest increase in precipitation, totaling 22 mm (0.9 in) over 5 days, while August records 15 mm (0.6 in) over just 3 days. Humidity levels are quite comparable, with September at 63% and August slightly lower at 60%. For a detailed view of August weather patterns, you can visit Nesebar weather in August.
September and October exhibit significant differences in weather patterns. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 30°C (86°F), with an average of 21°C (69°F) and relatively low precipitation of 22 mm (0.9 in) over 5 days. Humidity sits at a moderate 63%.
In contrast, October brings a noticeable drop in temperature, with a minimum of 7°C (45°F) and an average of 15°C (60°F), while the maximum reaches 27°C (81°F). This month also sees increased rainfall, totaling 69 mm (2.7 in) across 7 days, accompanied by higher humidity levels of 76%. For more specific weather details, you can check Nesebar weather in October.
September and November showcase a striking contrast in weather patterns. In September, temperatures are more moderate, with a minimum of 10°C (50°F) and an average of 21°C (69°F), peaking at a warm 30°C (86°F). The month experiences relatively low precipitation of 22 mm (0.9 in) over 5 days, along with a humidity level of 63%. In contrast, November ushers in cooler temperatures, starting at a minimum of -1°C (30°F), with an average of 11°C (52°F) and a maximum of 23°C (74°F). This month is significantly wetter, featuring 59 mm (2.3 in) of precipitation over 8 days, and a rise in humidity to 81%. For more details about November weather, you can check Nesebar weather in November.
September and December showcase a striking contrast in weather patterns. In September, temperatures range from a comfortable minimum of 10°C (50°F) to a pleasant average of 21°C (69°F), peaking at a warm 30°C (86°F). The month experiences relatively low precipitation of 22 mm (0.9 in) over about 5 days, with a humidity level of 63%. In contrast, December sees a significant drop in temperatures, with a minimum of -5°C (24°F) and an average of just 7°C (45°F), reaching a maximum of 19°C (66°F). This winter month is marked by increased precipitation at 75 mm (2.9 in) spread over 10 days, accompanied by higher humidity at 84%. For more detailed insights, you can view the Nesebar weather in December.
As the summer fades into September, Nesebar experiences a delightful shift in weather, making it a unique time to visit. The average temperature settles comfortably around 21°C (69°F), with warm days reaching up to 30°C (86°F), while evenings bring a refreshing coolness. Unlike the peak summer months, which are often characterized by sweltering temperatures and higher humidity, September offers a pleasant balance with around 63% humidity and only 22 mm (0.9 in) of precipitation spread over just a handful of days. This makes it an ideal month for outdoor activities without the summer crowds. For more insights on what to expect weather-wise throughout the year, check out Nesebar Climate.