September Weather in Piatra, Romania

Last updated: August 27, 2025

In Piatra, Romania, September welcomes a delightful transition as summer wanes, featuring a maximum temperature of 29°C (84°F) and a comfortable average of 14°C (57°F). As the month progresses, temperatures can drop as low as -3°C (27°F), highlighting the onset of autumn. The region experiences 41 mm (1.6 in) of precipitation over approximately 8 days, contributing to a moderate humidity level of 57%. This combination of mild temperatures and occasional rain sets the stage for a picturesque fall, perfect for exploring the lush landscapes and vibrant colors characteristic of Piatra during this enchanting time of year.

September Temperature in Piatra

September in Piatra, Romania marks the transition from the warm months of summer to the cooler embrace of autumn. As temperatures begin to drop, the minimum settles around -3°C (27°F), while the average climbs to a comfortable 14°C (57°F), offering a pleasant respite from the heat. The maximum temperature can still reach a warm 29°C (84°F), allowing for those final outdoor adventures before winter's arrival. This month showcases a trend of diminishing warmth following the peak summer months, making it a perfect time for locals and visitors alike to enjoy the stunning landscapes that radiate vibrant colors as nature prepares for the colder seasons ahead.

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

The chart illustrates September temperature patterns in Piatra, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Piatra, 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).
JanFebMarAprMayJunJulAugSepOctNovDec263136445461646557473931
Data source: Temperature data for Piatra generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Piatra

In September, Piatra, Romania, experiences a notable transition in precipitation patterns as summer fades and autumn approaches. With a total of 41 mm (1.6 inches) of rainfall spread over 8 days, September sees a reduction in both the amount and frequency of rain compared to the preceding months. This marks a significant dip from the 186 mm (7.3 inches) recorded in June, the wettest month of the year, followed by July and August, which also featured substantial rainfall. The generally milder weather of September lays the groundwork for the drier months ahead, leading into October's 70 mm (2.7 inches). As the days grow shorter and cooler, this slight decrease in precipitation sets the tone for the changing season in Piatra, hinting at the less rainy days that form part of the autumn landscape.

September Precipitation Trends in Piatra

The chart displays monthly precipitation patterns in Piatra, 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 Piatra, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec4044646313518614110441704577
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Piatra

In September, Piatra, Romania experiences a noticeable transition in humidity levels, dropping to 57% from the summer lows of 48% in August. This shift marks the beginning of the autumn season, where humidity begins to rise again, inching closer to the levels seen in spring and early summer. Observing the trends throughout the year, it's clear that January holds the highest humidity at 88%, while the summer months, particularly July and August, enjoy the driest conditions. As September bridges these two extremes, it sets the stage for the increased moisture of October and the return of the chillier, wetter months ahead, ultimately culminating in a cozy, humid winter.

September Average Humidity in Piatra

This chart illustrates the average monthly humidity levels in Piatra, 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 Piatra is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%85%82%73%71%70%66%48%57%79%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Piatra

As September rolls in Piatra, Romania, the UV Index experiences a slight dip, settling at 7, indicating a high level of sun exposure. This marks a transition from the intense summer months of August, where the UV Index peaked at 9, to a more moderate yet still significant level. With a burn time of 25 minutes, it's essential to stay vigilant about sun protection during this month. As the seasons change, September offers a great opportunity to enjoy the outdoors without compromising skin safety—just remember to apply sunscreen regularly! For more detailed information on the UV levels throughout the year, visit Piatra UV Index.

Maximum UV Index Levels in Piatra for September

The chart shows the monthly maximum UV Index (UVI) for Piatra 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 Piatra typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789997532
Data source: Piatra 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 Piatra

September in Piatra, Romania, marks a shift as summer gracefully transitions into autumn, bringing a delightful 337 hours of sunshine. This month, while not as radiant as the peak summer months of July and June—boasting 420 and 398 hours respectively—still holds its charm. With a notable abundance of light compared to the spring months, September serves as a reminder of the sunny days that preceded it, particularly after a vibrant August that offered 402 hours. Fall begins to creep in, but the lingering warmth and sunlight provide a perfect backdrop for outdoor activities, making September a lovely time to enjoy the beauty of Piatra before the shorter days of October.

Monthly Sunshine Duration in Piatra: September Highlighted

The September sunshine duration represents the total number of hours Piatra 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.
JanFebMarAprMayJunJulAugSepOctNovDec173h230h288h342h384h398h420h402h337h284h219h190h
Data source: Piatra September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Piatra During September

In Piatra, Romania, September marks a transition as summer gracefully yields to autumn. During this month, the chance of sunny weather is a pleasant 47%, indicating a favorable outlook for outdoor activities and scenic explorations. This percentage reflects a trend seen throughout the summer months, where July and August peak with a sunny probability of 54% and 55%, respectively. As the warm season draws to a close, September retains a notable amount of sunshine, providing a beautiful backdrop for enjoying the changing colors of the landscape. Compared to the cooler months that follow, where the chances of sunny days diminish to around 40% in October and even lower in winter, September stands out as a golden opportunity to bask in the lingering warmth.

Percentage of Sunny Days in September in Piatra

The chart illustrates the percentage of sunny days in Piatra 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 Piatra experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%39%37%35%38%36%54%55%47%40%32%22%
Data source: Piatra September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Piatra in September

As summer gives way to fall in Piatra, Romania, September marks a significant transition in daylight hours. Following the sun-kissed days of June and July, which boast a generous 15 hours of daylight, September sees a gentle decline to 12 hours. This gradual reduction signals the approach of autumn, as daylight continues its retreat through October and into the chill of November. The landscape begins to shift; days become shorter but often still warm, allowing residents to savor the last remnants of the summer sun. With each passing day, nature prepares for a quieter, introspective season, inviting a sense of calm amidst the changing light.

Average Daylight Hours in Piatra for September

The chart illustrates the variation in daylight duration in Piatra throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 10m10h 24m11h 56m13h 31m14h 52m15h 33m15h 11m14h12h 28m10h 54m9h 31m8h 48m
Data source: Piatra daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Piatra

As September rolls into Piatra, Romania, the gentle whispers of the wind signal the transition into autumn. With an average wind speed of 1.7 m/s (4 mph), September showcases a notable decline from the slightly breezier summer months, where winds hovered around 1.8 m/s. The steady dip in wind speed from April's 1.9 m/s to September reflects a serene calm, inviting residents and visitors alike to enjoy the crisp air and vibrant foliage. As the year progresses into the latter months, the wind begins to pick up again, suggesting a shift towards cooler days ahead—where each gust carries the promise of fall's rich tapestry.

Average September Wind Speed in Piatra

The chart displays monthly wind speed patterns in Piatra, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.22.21.92.21.91.81.81.7 m/s1.91.92.1
Data source: Piatra September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Piatra Compares to Other Months

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

In September, the weather tends to be much milder, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 29°C (84°F) and an average of 14°C (57°F). The month experiences about 41 mm (1.6 in) of precipitation over approximately 8 days, accompanied by moderate humidity at 57%. In contrast, January presents a much colder and harsher climate, characterized by a minimum temperature of -21°C (-5°F), an average of -3°C (26°F), and a maximum of only 9°C (49°F). Precipitation in January is slightly lower at 40 mm (1.6 in) across 7 days, but the humidity significantly increases to 88%, creating a distinct chill in the air. For a deeper dive into the January weather specifics, check out Piatra weather in January.

In September, the weather is considerably milder, with temperatures ranging from a chilly minimum of -3°C (27°F) to a warm maximum of 29°C (84°F), and an average of 14°C (57°F). The month sees moderate humidity at 57% and relatively light precipitation of 41 mm (1.6 in) over approximately 8 days. In contrast, February experiences more severe conditions, characterized by a stark drop in temperatures that can plummet to a minimum of -19°C (-1°F) and only reach a maximum of 16°C (62°F), with an average of -1°C (31°F). This month also sees slightly higher precipitation at 44 mm (1.7 in) spread over 9 days and a notable increase in humidity to 85%. For more details on February weather in Piatra, visit Piatra weather in February.

September and March exhibit contrasting weather patterns. In September, temperatures range from a chilly -3°C (27°F) at night to a warm 29°C (84°F) during the day, with an average of 14°C (57°F). The month receives about 41 mm (1.6 in) of precipitation across 8 days, accompanied by a relatively comfortable humidity level of 57%.

In contrast, March is significantly cooler, with nighttime lows dropping to -16°C (4°F) and daytime highs peaking at 20°C (67°F), resulting in an average temperature of just 2°C (36°F). This month experiences a higher total precipitation of 64 mm (2.5 in) over 11 days, combined with increased humidity at 82%.

For a more detailed look at the weather conditions in March, check out Piatra weather in March.

In comparing the weather of September and April, notable differences emerge. September enjoys milder temperatures with an average of 14°C (57°F), ranging from a chilly -3°C (27°F) to a warm 29°C (84°F), boasting only 41 mm (1.6 in) of precipitation over 8 days. In contrast, April is characterized by cooler temperatures, with an average of 7°C (45°F) and a wider range that dips to a frigid -11°C (13°F) and peaks at 23°C (74°F). April also sees more rainfall, totaling 63 mm (2.5 in) over 11 days, accompanied by higher humidity at 73%. For more details, visit Piatra weather in April.

September and May present distinct weather patterns, with September generally experiencing warmer temperatures. September boasts a minimum temperature of -3°C (27°F) and an average of 14°C (57°F), reaching a maximum of 29°C (84°F). In contrast, May's temperatures range from -1°C (31°F) to a maximum of 24°C (76°F) and average around 12°C (54°F). Additionally, May is significantly wetter, with 135 mm (5.3 in) of precipitation across 18 rainy days, compared to September's 41 mm (1.6 in) over just 8 days. Humidity is higher in May at 71%, while September sees a more moderate 57%. For a closer look at May's weather, you can view more details here: Piatra weather in May.

When comparing the weather in September and June, notable differences emerge. September typically experiences a wider temperature range, with minimums plummeting to -3°C (27°F) and maximums reaching up to 29°C (84°F), while averaging around 14°C (57°F). In contrast, June starts off slightly warmer at 2°C (35°F) minimum and peaks at 28°C (83°F), with an average of 16°C (61°F). Moreover, June is significantly wetter, receiving 186 mm (7.3 in) of precipitation over 23 days compared to September's 41 mm (1.6 in) over just 8 days. The humidity levels also reflect a distinction, with June being more humid at 70%, whereas September’s humidity is more moderate at 57%. For a detailed look at the weather in June, you can visit Piatra weather in June.

In comparing the weather of September and July, we observe distinct differences in temperature and precipitation patterns. September tends to have cooler mornings, with minimum temperatures dropping to around -3°C (27°F), while July starts off warmer with minimums around 7°C (44°F). Both months see maximum temperatures reaching similar highs of 29°C (84°F) and 29°C (85°F) respectively, but the average temperature in September is significantly lower at 14°C (57°F) compared to July's 18°C (64°F). Precipitation is more pronounced in July, with 141 mm (5.6 in) falling over 20 days, in stark contrast to September's much lighter rainfall of 41 mm (1.6 in) spread over just 8 days. Humidity levels are also higher in July at 66%, compared to September's 57%. For more detailed insights, you can check this link: Piatra weather in July.

In comparison to August, the weather in September shows a notable shift towards cooler temperatures and reduced precipitation. September experiences a wider temperature range, with minimums dropping to -3°C (27°F) and maximums reaching 29°C (84°F), while August remains warmer, with minimums at 5°C (41°F) and maximums up to 31°C (88°F). Moreover, September has significantly less rainfall, totaling 41 mm (1.6 in) over 8 days, compared to August's 104 mm (4.1 in) spread across 13 days. Humidity levels also differ, with September at 57% and August lower at 48%. For a more detailed view of August weather, check out Piatra weather in August.

September and October showcase distinct shifts in weather conditions. In September, temperatures range from a low of -3°C (27°F) to a high of 29°C (84°F), averaging around 14°C (57°F), while precipitation totals 41 mm (1.6 in) over 8 days, with a moderate humidity of 57%. Conversely, October sees a drop in average temperatures to 9°C (48°F), with minimums dipping to -4°C (25°F) and maximums reaching 23°C (74°F). Precipitation increases to 70 mm (2.7 in), occurring over 9 days, and humidity rises significantly to 79%. This transition marks the shift from the warmth of early autumn to the cooler, more humid conditions typical of late fall. For more detailed weather insights, you can check Piatra weather in October.

September generally welcomes warmer temperatures, with an average of 14°C (57°F) and a maximum that can climb up to 29°C (84°F). In contrast, November sees cooler conditions, with an average temperature dropping to 4°C (39°F) and a maximum of 22°C (72°F). Both months experience a similar amount of precipitation, but November tends to be a bit wetter, with 45 mm (1.8 inches) of rain over 10 days compared to September's 41 mm (1.6 inches) over 8 days. Additionally, humidity levels are significantly higher in November, reaching 87%, compared to 57% in September, giving November a distinctly crisper and damp feel. For more specific details, check out Piatra weather in November.

September weather tends to be much milder compared to December, with temperatures ranging from a minimum of -3°C (27°F) to a comfortable average of 14°C (57°F) and reaching a maximum of 29°C (84°F). In this month, precipitation is relatively light, averaging 41 mm (1.6 in) over about 8 days, alongside a moderate humidity of 57%.

In contrast, December brings a significant drop in temperatures, with lows plunging to -17°C (2°F) and an average of 0°C (31°F). The maximum temperature only reaches 14°C (57°F), making December much chillier overall. This month also sees increased precipitation, totaling 77 mm (3.0 in) over approximately 10 days, and a notable rise in humidity to 88%.

For more details on December weather patterns, you can visit Piatra weather in December.

Compare Piatra's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Piatra

September in Piatra marks a distinct transition as summer fades, inviting cooler breezes and the gentle onset of autumn. With an average temperature settling at a refreshing 14°C, the month showcases a notable drop from the sweltering heat of previous months. Days are sprinkled with light precipitation, occurring on about 8 days, contributing to a revitalizing atmosphere as nature begins to shift. Despite the decrease in temperature, the month remains comfortably warm with highs reaching up to 29°C. This blend of moderate humidity at 57% and occasional rain creates a vibrant backdrop, ideal for outdoor exploration. For a deeper dive into the climatic patterns of this beautiful region, visit Piatra Climate.