Last updated: August 27, 2025
September in Sinaia, Romania presents a delightful transition into autumn, where daytime temperatures can reach a pleasant 29°C (84°F) but may drop to a chilly -3°C (27°F) at night. With an average temperature of 14°C (57°F), visitors can expect a refreshing climate ideal for outdoor activities. The month receives a total precipitation of 41 mm (1.6 in) over approximately 8 days, complemented by a moderate humidity level of 57%. This combination makes for a unique and invigorating experience in the picturesque landscapes of Sinaia during early autumn.
In September, Sinaia transitions into the heart of autumn, offering a delightful mix of milder temperatures. With average highs reaching 29°C (84°F), the days remain warm and inviting, perfect for outdoor activities amidst the stunning mountain scenery. However, as the month progresses, the minimum temperatures can drop to -3°C (27°F), hinting at the chillier days to come. Overall, the average temperature of 14°C (57°F) portrays a comfortable climate, ideal for hiking and exploring the vibrant natural beauty that surrounds this charming Romanian town. As summer fades, the crisp air and colorful foliage create a picturesque backdrop for visitors seeking both relaxation and adventure.
In September, Sinaia experiences a subtle transition as summer wanes, marked by a modest precipitation amount of 41 mm (1.6 in) over about 8 days. This consistent rainfall continues the trend from the wetter months of May to August, which see significantly higher totals, peaking in June with 186 mm. As the days shorten and temperatures cool, September serves as a gentle precursor to autumn, providing just enough moisture to sustain the lush landscapes, making it an ideal time for nature enthusiasts. The relatively light precipitation in September not only reflects a decline from the summer deluge but also sets the stage for the more varied weather patterns that October will bring.
In September, Sinaia, Romania experiences a noticeable shift in humidity levels, registering at 57%. This marks a rise from the comfortable lows of the previous month, August, where humidity dropped to a refreshing 48%. As autumn approaches, the air begins to retain more moisture, reflecting a gradual increase that peaks later in the year, with October soaring back to 79%. This trend signifies a transition from the dryness of summer into the richly humid conditions characteristic of fall and winter, as evidenced by the humidity levels climbing again to 87% by November. The changing seasons bring a diverse experience of humidity, making September a compelling blend of lingering summer warmth and the crispness of oncoming autumn.
In September, Sinaia, Romania experiences a notable shift in the UV Index, marked by a drop to 7, indicating a high exposure category. This change reflects a transition from the intense summer months, where the UV Index peaked at 9, to a slightly more moderate level that still requires caution. During this month, individuals have a burn time of approximately 25 minutes before needing protection, a valuable reminder that even as the season shifts, UV rays remain potent. As autumn approaches, it’s essential to stay aware of these changes in sunlight intensity to enjoy the outdoors safely. For more detailed information, visit Sinaia UV Index.
UV Risk Categories
September in Sinaia, Romania, shines as a vibrant transition between summer and autumn, boasting an impressive 337 hours of sunshine. As the warm summer days of July and August gradually fade, this month retains a generous amount of sunshine compared to the upcoming months, illustrating a gentle decline from July's peak of 420 hours. While September marks a noticeable drop in daylight, it still offers more radiant hours than the chillier October with 284 hours. This balance of warmth and light makes September an ideal time to explore the stunning landscapes of Sinaia, as nature begins its colorful transformation. As the year progresses toward winter, the charm of autumn sun remains a captivating highlight in this picturesque Romanian destination.
In Sinaia, Romania, September offers a pleasant 47% chance of sunny weather, making it one of the brighter months of the year. This optimism follows a summer peak, with July and August boasting notably higher probabilities of sun at 54% and 55%, respectively. As the seasons shift toward autumn, the likelihood of sunny days decreases but remains relatively favorable compared to the chillier months ahead. Notably, the sun is less frequent in the later fall months, such as October and November, which dip to 40% and 32%, suggesting that September stands out as a great time to enjoy the lingering warmth and picturesque landscapes of the Carpathians before winter sets in.
As the summer fades in Sinaia, Romania, September marks a gentle transition in daylight hours. After basking in 15 hours of sunlight during the peak of summer in June and July, the month offers a slight reduction, yielding about 12 hours of daylight. This gradual decrease signals the approach of autumn, following a pattern established throughout the year. Notably, as we move from the longer days of summer towards the shorter days of winter, daylight availability sees a steady decline from 14 hours in August, tapering off to 10 hours by October. This rhythmic ebb and flow of daylight not only highlights the beauty of the changing seasons but also invites locals and visitors alike to embrace the vibrant autumn hues that characterize the region during this lovely time of year.
As summer transitions into autumn, September in Sinaia, Romania, experiences a gentle decline in average wind speeds, settling at 1.7 m/s (4 mph). This marks the continuation of a subtle downward trend observed since July, where winds began to calm after the more robust conditions of spring and early summer. With breezes softening, the atmosphere becomes serene, allowing visitors to fully immerse themselves in the stunning autumnal scenery without the distraction of high winds. The gradual shift in wind patterns reflects the region's seasonal rhythms, as nature prepares for the onset of winter's chill while offering a peaceful respite in early fall.
Weather in Sinaia varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sinaia, focusing on differences in temperature, rainfall, humidity, and UV levels.
The weather in September and January presents a stark contrast, reflecting the transition from late summer to the depths of winter. September enjoys a much warmer climate, with average temperatures around 14°C (57°F) and highs reaching up to 29°C (84°F), while January sees frigid conditions with average temperatures dipping to -3°C (26°F) and maximums only reaching 9°C (49°F). In terms of precipitation, both months are similar, with September receiving 41 mm (1.6 in) over 8 days and January slightly less at 40 mm (1.6 in) over 7 days, but January's higher humidity at 88% creates a much colder and more biting atmosphere compared to September's 57% humidity. For more detailed information, check out Sinaia weather in January.
September and February exhibit striking differences in weather characteristics. In September, temperatures range from a minimum of -3°C (27°F) to a maximum of 29°C (84°F), with an average of 14°C (57°F). The month sees about 41 mm (1.6 in) of precipitation over approximately 8 days and maintains a humidity level of 57%. In contrast, February brings much colder conditions, with temperatures dropping to a minimum of -19°C (-1°F) and peaking at 16°C (62°F), averaging around -1°C (31°F). This month experiences slightly higher precipitation at 44 mm (1.7 in) over 9 days, combined with increased humidity levels of 85%. For more detailed information, you can check Sinaia weather in February.
When comparing the weather in September and March, several notable differences arise. September typically enjoys milder temperatures, ranging from a minimum of -3°C (27°F) to a maximum of 29°C (84°F), with an average of 14°C (57°F), while March experiences cooler conditions with a minimum of -16°C (4°F) and an average temperature of only 2°C (36°F). Precipitation is more significant in March, totaling 64 mm (2.5 in) over 11 days, compared to September's 41 mm (1.6 in) over 8 days. Additionally, March has a higher humidity level at 82%, compared to September's 57%. For more detailed insights into March weather, visit Sinaia weather in March.
When comparing the weather in September and April, it's clear that both months experience varying temperatures and precipitation levels. September tends to be warmer, with an average temperature of 14°C (57°F) and a maximum reaching up to 29°C (84°F), while April sees cooler average temperatures at 7°C (45°F), with a maximum of 23°C (74°F). Regarding precipitation, April is slightly wetter, receiving 63 mm (2.5 in) over 11 days, compared to September's 41 mm (1.6 in) over 8 days. Additionally, April has higher humidity at 73%, compared to September's 57%. This comparison highlights the transition from the warmth of early autumn to the chill of early spring. For more detailed insights, check Sinaia weather in April.
When comparing the weather in September and May, notable differences emerge. September generally boasts a wider temperature range, with lows around -3°C and highs reaching up to 29°C, averaging 14°C. In contrast, May experiences milder temperatures, ranging from a minimum of -1°C to a maximum of 24°C, with an average of 12°C. Precipitation is also significantly higher in May, totaling 135 mm over 18 days, compared to September's 41 mm over just 8 days. Additionally, May tends to have higher humidity levels at 71%, while September's humidity is somewhat lower at 57%. For more detailed insights, you can visit Sinaia weather in May.
In comparing the weather between September and June, June tends to be wetter and more humid, with significant precipitation averaging 186 mm over 23 days, compared to September's 41 mm over just 8 days. While September experiences a broader range of temperatures, with a maximum of 29°C (84°F), June's temperatures are slightly cooler on average at 16°C (61°F) but still reach a high of 28°C (83°F). Additionally, humidity levels are higher in June at 70%, compared to 57% in September, contributing to a more humid feel during the earlier summer month. For a detailed look at the weather specifics for Sinai, check out Sinaia weather in June.
In July, the weather in Sinaia experiences warmer temperatures with a minimum of 7°C (44°F) and an average of 18°C (64°F), peaking at a comfortable 29°C (85°F). However, this month is also characterized by significantly higher precipitation, with 141 mm (5.6 in) of rain spread over 20 days, contributing to a humidity level of 66%. In contrast, September brings cooler temperatures, ranging from a minimum of -3°C (27°F) to an average of 14°C (57°F) and a maximum also of 29°C (84°F). While the maximum temperature may be similar to July, September typically sees less rainfall, with 41 mm (1.6 in) over just 8 days, leading to reduced humidity levels of 57%. For more detailed insights into the July weather, visit Sinaia weather in July.
In September, the temperature range shifts to cooler conditions, with a minimum of -3°C (27°F) and a maximum of 29°C (84°F), resulting in an average of 14°C (57°F). This month also sees a decrease in precipitation to 41 mm (1.6 in) over 8 days, alongside a humidity level of 57%. In contrast, August experiences warmer weather, featuring a minimum of 5°C (41°F), a maximum of 31°C (88°F), and an average of 18°C (65°F). Notably, August receives significantly more rainfall, with 104 mm (4.1 in) spread across 13 days and a lower humidity of 48%. For more details on the August conditions, visit Sinaia weather in August.
September and October display notable differences in weather patterns. September enjoys a wider temperature range, with minimums of -3°C (27°F) and maximums reaching up to 29°C (84°F), resulting in a higher average of 14°C (57°F). In contrast, October experiences cooler temperatures, with minimums dropping to -4°C (25°F) and maximums capping at 23°C (74°F), leading to a lower average of 9°C (48°F). Precipitation increases in October to 70 mm (2.7 in) over 9 days, compared to September's 41 mm (1.6 in) over 8 days. Additionally, October boasts higher humidity levels at 79%, compared to September's 57%. For more detailed insights, check Sinaia weather in October.
September and November exhibit distinctly different 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 experiences about 41 mm (1.6 in) of precipitation over 8 days, accompanied by a moderate humidity level of 57%. In contrast, November sees colder temperatures, with minimums dropping to -9°C (17°F) and an average of just 4°C (39°F). Despite having a maximum temperature of 22°C (72°F), it feels significantly chillier, as the month brings in 45 mm (1.8 in) of rain over 10 days and a higher humidity of 87%. For a detailed look at the November weather in Sinaia, check out Sinaia weather in November.
In September, the weather is relatively mild, 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). With only 41 mm (1.6 in) of precipitation over about 8 days, humidity stands at a moderate 57%.
Conversely, December is much colder, with minimums plummeting to -17°C (2°F) and averages dipping to around 0°C (31°F). The maximum temperature only reaches 14°C (57°F). Additionally, December experiences higher precipitation levels at 77 mm (3.0 in) over 10 days, accompanied by a notable increase in humidity to 88%. For more details on December weather, check out Sinaia weather in December.
As September rolls in, Sinaia experiences a delightful transition in weather, where the warm remnants of summer meet the crisp beginnings of autumn. The average temperature sits comfortably around 14°C (57°F), but it can soar to a maximum of 29°C (84°F) on sunny days, offering a pleasant reprieve from the more intense summer heat. While November may bring colder days with a minimum temperature occasionally dipping to -3°C (27°F), September still provides a moderate and enjoyable climate to explore this beautiful mountain resort. With 41 mm (1.6 in) of precipitation over approximately 8 days, the month is relatively drier, allowing for chance encounters with the stunning fall foliage. The 57% humidity adds a refreshing touch to the crisp air, making September an ideal time for outdoor adventures. For more detailed insights into seasonal variations, check out Sinaia Climate.