Last updated: August 27, 2025
In September, Costinesti, Romania experiences a pleasant climate ideal for late summer activities. With maximum temperatures reaching 28°C (82°F) and a comfortable average of 21°C (70°F), the weather invites visitors to enjoy the seaside. Nights cool down to a mild 12°C (53°F), offering just the right atmosphere for evening strolls. The month sees a modest 22 mm (0.9 in) of precipitation over 4 days, ensuring that the surrounding landscapes remain vibrant and lush. With an average humidity level of 63%, the air feels fresh, making September a delightful time to explore this charming coastal town.
In Costinesti, Romania, September ushers in a delightful early autumn, showcasing a pleasant transition in temperatures. This month features a minimum of 12°C (53°F), an average of 21°C (70°F), and a maximum of 28°C (82°F), making it one of the last months to embrace the summer warmth. As the days begin to cool slightly compared to the peak summer months of July and August, visitors can still enjoy the balmy, beach-friendly climate. The gradual dip from the highs of summer invites a perfect blend of outdoor activities, while the refreshing evenings create an inviting atmosphere for relaxation. Overall, September offers a sweet spot of temperate weather, perfect for enjoying Costinesti's scenic coastline before the chill of autumn sets in.
September in Costinesti, Romania, marks a transition toward autumn, with precipitation levels reaching 22 mm (0.9 in) over approximately 4 days. This mild rainfall represents a noticeable increase from the parched summer months, particularly August, which saw a mere 9 mm (0.4 in) across just 2 days. As the season shifts, the weather typically becomes more variable, with September serving as a precursor to the wetter months ahead, such as October and December, which collect more substantial amounts of rain. This gradual uptick in precipitation not only revitalizes the landscape but also heralds the changing patterns of the region's climate.
In September, Costinesti, Romania experiences a noticeable shift in humidity, decreasing to 63% from the peak of 84% in January. This subtle drop follows a gentle decline throughout the summer months, reaching its lowest in August at 60%. As autumn approaches, the humidity begins to rise again, emphasizing an intriguing seasonal pattern where the air becomes crisper and more refreshing. The transition into September sees the humidity remaining moderate, creating a pleasant atmosphere for outdoor activities while heralding the return of the wetter autumn months ahead. This cyclical trend highlights the region's dynamic climate, where summer warmth gradually yields to the lushness of fall.
As summer fades, September in Costinesti marks a transition in UV exposure, with the UV Index dipping to 7, categorizing it as high. This reduction from the peak 9 seen in the heart of summer indicates a more moderate yet still significant sun intensity, warranting about 25 minutes of unprotected sun exposure before a burn could occur. Although the days are shorter and temperatures begin to cool, it's essential to remain vigilant and protect your skin. This month serves as a reminder that while the intense summer rays may be waning, UV radiation is still potent. For a detailed understanding of UV levels throughout the year, check out the full guide on the Costinesti UV Index.
UV Risk Categories
September in Costinesti, Romania, is a delightful bridge between the bustling summer and the quieter fall months, boasting an impressive 344 hours of sunshine. As summer fades, the sunlight lingers, with September typically receiving a significant amount of sunlight, trailing only behind the peak summer months of June and July. This trend highlights the region's ability to maintain warmth and vibrancy, making it an ideal time for visitors seeking to bask in the sun without the peak season crowds. As the days grow shorter compared to the vibrant August, the golden hues of early autumn create a picturesque backdrop, perfect for enjoying the beautiful coastline and outdoor activities.
As September rolls into Costinesti, Romania, the likelihood of enjoying sunny days remains relatively high at 58%. This marks a noticeable drop from the peak summer months of July and August, which boast sun probabilities of 78% and 76% respectively. However, September still stands out compared to the gloomier winter months, where chances of sunshine plummet to around 26%. The transition from summer to autumn offers a balanced mix of pleasant weather, making it a favorable time for those seeking to soak up the dwindling summer sun before the cooler days set in. Overall, while September signals the start of a seasonal shift, visitors can still anticipate reasonably sunny weather to enhance their coastal experience.
September in Costinesti, Romania, marks a gentle transition as daylight begins to wane, with the sun gracing the coastline for about 12 hours each day. Following the peak of summer in June and July, which basked in 15 hours of sunlight, the days start to shorten, but they still maintain a comfortable glow. As summer gives way to autumn, September offers a delightful blend of warmth and diminishing daylight, inviting visitors to enjoy the beautiful early fall. This rhythm of daylight illustrates a gradual decline from the vibrant summer months into the cozy embrace of autumn, making September an ideal time to relish the lingering sun by the sea.
As summer transitions to autumn in Costinesti, Romania, September brings forth a refreshing shift in the winds, with an average speed of 5.3 m/s (12 mph). This marks a subtle increase from the summer months, where the winds hovered around 4.3 to 4.6 m/s (10 to 10.3 mph). The gentle breezes of September evoke a sense of change, hinting at the approaching briskness of October, which sees a notable rise in wind speed to 5.9 m/s (13 mph). This trend of increasing winds not only invigorates the coastline but also enhances the beach experience, inviting autumn adventurers to embrace the elements before winter's chill arrives.
Weather in Costinesti varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Costinesti, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present two distinctly different weather experiences. In September, temperatures range from a mild 12°C (53°F) at night to a warm 28°C (82°F) during the day, with an average of 21°C (70°F). The month features relatively low precipitation at 22 mm (0.9 in) over just four days and a comfortable humidity level of 63%. Conversely, January brings a stark contrast, with much colder temperatures ranging from a frigid -10°C (15°F) at night to a maximum of 14°C (57°F), averaging around 4°C (39°F). Additionally, January experiences more precipitation at 57 mm (2.2 in) across eight days and higher humidity at 84%. For more detailed information about January weather, you can refer to Costinesti weather in January.
September and February present stark contrasts in weather. In September, temperatures are mild to warm, with an average of 21°C (70°F) and a maximum reaching 28°C (82°F), making it a pleasant month with relatively low precipitation at 22 mm (0.9 in) over just four days. In contrast, February experiences much colder conditions, with temperatures averaging only 5°C (41°F) and dipping as low as -6°C (21°F). This month also has higher precipitation, totaling 41 mm (1.6 in) and occurring over seven days, contributing to a higher humidity level of 81%. For more specifics about February weather in this region, visit Costinesti weather in February.
September and March present contrasting weather patterns that highlight the transition between seasons. In September, temperatures are generally mild, with a minimum of 12°C (53°F) and an average high of 28°C (82°F), while experiencing relatively low precipitation of 22 mm (0.9 in) over just 4 days. The humidity is comfortable at 63%, making it a pleasant time of year. In stark contrast, March is much colder, with temperatures dipping to a minimum of -9°C (17°F) and an average high of only 16°C (61°F). It also sees higher precipitation levels, totaling 46 mm (1.8 in) spread over 8 days, and a higher humidity of 79%, contributing to a damp and chilly atmosphere. For more details, you can check the Costinesti weather in March.
When comparing the weather in September and April, a noticeable contrast emerges in temperature and humidity. September boasts a milder climate, with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 28°C (82°F), while April is much cooler, averaging between 3°C (38°F) and 20°C (68°F). Additionally, September experiences only about 22 mm (0.9 in) of precipitation over four days, compared to April’s increased precipitation of 30 mm (1.2 in) over five days. Humidity levels are also higher in April at 75%, compared to September's more comfortable 63%. For a detailed look at the specific weather patterns, check out Costinesti weather in April.
When comparing the weather in September and May, September generally offers warmer temperatures with a minimum of 12°C (53°F) and an average high reaching 28°C (82°F), while May's temperatures range from a lower minimum of 9°C (49°F) to a maximum of 25°C (76°F). In terms of precipitation, September sees less rainfall with 22 mm (0.9 in) over about 4 days, contrasted with May's higher total of 31 mm (1.2 in) spread across 7 days. Additionally, September has a lower humidity level of 63%, compared to May's 77%, making it feel a bit drier. For more detailed information about weather patterns during May, you can check Costinesti weather in May.
In comparing the weather between September and June, we notice some distinct differences. September features a comfortable average temperature of 21°C (70°F), similar to June, but has a slightly lower maximum of 28°C (82°F) compared to June's maximum of 29°C (84°F). However, September experiences much less precipitation, with only 22 mm (0.9 in) over 4 days, while June has significantly higher rainfall at 71 mm (2.8 in) spread across 11 days. Additionally, humidity is lower in September at 63%, compared to June's 71%, making September feel somewhat drier overall. For a deeper look at the weather in June, you can visit Costinesti weather in June.
September generally brings cooler temperatures compared to July, with its minimums at 12°C (53°F) and daily averages around 21°C (70°F), while July enjoys warmer conditions with minimums of 17°C (63°F) and averages of 24°C (75°F). Additionally, July tends to be wetter, recording 56 mm (2.2 in) of precipitation over approximately 7 days, compared to September's more manageable 22 mm (0.9 in) across just 4 days. Humidity levels are also slightly higher in July at 69%, compared to September's 63%. For a more detailed look at how July weather specifically unfolds in Costinesti, check out this link: Costinesti weather in July.
In comparing the weather between September and August, September tends to be cooler, with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 28°C (82°F), while August is warmer, featuring a minimum of 18°C (64°F) and a maximum of 30°C (86°F). Precipitation is slightly higher in September, totaling 22 mm (0.9 in) over four days, compared to August's 9 mm (0.4 in) over just two days. Humidity levels are fairly similar, with September at 63% and August at 60%. For more details on August weather, you can visit Costinesti weather in August.
In September, the weather is generally warmer, with average temperatures around 21°C (70°F) and maximums reaching up to 28°C (82°F). The month experiences relatively low precipitation, totaling 22 mm (0.9 in) over just 4 days, and humidity levels are comfortably at 63%.
In contrast, October sees a noticeable drop in temperatures, averaging only 16°C (61°F) with maximums of 24°C (76°F). The month is wetter, with 57 mm (2.3 in) of rainfall spread over 7 days, contributing to a higher humidity level of 76%. The shift from September to October brings cooler and more humid conditions, making it a significant transition into fall. For more detailed information, check out Costinesti weather in October.
September and November showcase a stark contrast in weather. In September, temperatures range from a mild 12°C (53°F) to a warm 28°C (82°F), with an average of 21°C (70°F). The month typically experiences light precipitation, totaling 22 mm (0.9 in) over just 4 days, accompanied by a moderate humidity level of 63%. In contrast, November brings noticeably cooler temperatures, with a minimum of 1°C (33°F) and a maximum of 20°C (69°F), averaging at 11°C (52°F). Precipitation increases significantly in November, totaling 60 mm (2.4 in) over 10 days, coupled with higher humidity levels of 81%. For those interested in more details about the climate, visit Costinesti weather in November.
In September, the weather is generally mild and pleasant, with average temperatures around 21°C (70°F) and maximums reaching up to 28°C (82°F). The month experiences low precipitation, totaling just 22 mm over about 4 days, and a moderate humidity level of 63%. In stark contrast, December brings a much colder climate, with average temperatures dropping to 7°C (45°F) and nightly lows plummeting to -5°C (24°F). Precipitation significantly increases to 72 mm over 13 days, and humidity rises to 84%. For a detailed look at the weather specifics during this chillier month, check out Costinesti weather in December.
As September arrives in Costinesti, the weather begins to shift, offering a delightful transition from the summer heat to more temperate conditions. With daily temperatures averaging around a pleasant 21°C (70°F), visitors can still enjoy warm days while experiencing cooler evenings. The humidity levels hover at a comfortable 63%, making it a great time for outdoor activities without the sweltering heat of the peak summer months. While the chances of rain increase slightly, with about four days of precipitation and a total of 22 mm, this quaint coastal town still provides ample opportunities for sun-soaked adventures. For a detailed look at what to expect throughout the year, explore Costinesti Climate.