September Weather in Sankt Goar, Germany

Last updated: February 26, 2025

Experience the September weather in Sankt Goar, Germany, where temperatures gracefully transition from a warm maximum of 31°C (88°F) to a cool minimum of 3°C (38°F), with an average sitting at a pleasant 15°C (59°F). This month sees approximately 49 mm (1.9 in) of rain spread across 7 days, enhancing the lush landscape of the area. With humidity levels averaging 82%, visitors can expect a crisp yet refreshing ambiance, perfect for exploring the scenic beauty and cultural heritage that Sankt Goar has to offer.

September Temperature in Sankt Goar

In September, Sankt Goar, Germany, begins to transition into the cooler autumn months, featuring temperatures that range from a minimum of 3°C (38°F) to a maximum of 31°C (88°F). The average temperature settles around a comfortable 15°C (59°F), making it an ideal time for outdoor activities amid the picturesque Rhine Valley backdrop. As summer warmth lingers, particularly in the early days of the month, the evenings gradually bring a refreshing chill, signaling the impending change of seasons. This month stands out as a time of pleasant weather, encouraging exploration of the scenic vineyards and historical sites before the winter chill sets in.

September Weather in Sankt Goar: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sankt Goar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec353842495564666658514238
Data source: Temperature data for Sankt Goar generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Sankt Goar

In September, Sankt Goar experiences a noticeable decline in precipitation, with only 49 mm (1.9 in) recorded, making it one of the drier months of the year. This is reflected in the 7 days of rainfall, the fewest of any month since April. The reduced precipitation marks a shift from the wetter summer months, particularly June, which saw 80 mm (3.1 in) over 11 days. As autumn begins to set in, the diminishing rainfall often brings a refreshing change to the landscape, while still maintaining an inviting atmosphere for those exploring the Rhine Valley. This trend of decreased precipitation continues into October, suggesting a gradual transition toward the more rainfall-heavy months ahead.

September Precipitation Trends in Sankt Goar

The chart displays monthly precipitation patterns in Sankt Goar, 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.
JanFebMarAprMayJunJulAugSepOctNovDec645871387180696549574898
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sankt Goar

September in Sankt Goar brings a noticeable shift in humidity, with levels rising to 82%—an increase from the summer months. This marks a transition as the region moves from the warm, relatively drier days of July and August, where humidity hovered around 74-75%, towards the more damp and cooler early autumn. As we look at the broader trends, it’s clear that humidity is gradually climbing back up, preparing for the wetter months of October and November, which see levels climb back to 88% and 90%, respectively. This seasonal rhythm not only influences the climate but also sets the stage for the picturesque fall landscape the region is known for.

September Average Humidity in Sankt Goar

This chart illustrates the average monthly humidity levels in Sankt Goar, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%87%83%76%74%74%75%82%88%91%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sankt Goar

As summer fades into autumn, September in Sankt Goar, Germany sees a noticeable shift in the UV Index, dropping to 5. This indicates a moderate exposure category, allowing for a safe burn time of 30 minutes—a welcome change for those looking to enjoy a bit of sun without excessive risk. Following the intense UV levels of July and June, which reached 8, September provides a gentler sun that encourages outdoor activities without the pressing need for heavy protection. While the sun's rays remain potent, it's essential to stay aware of daily UV fluctuations. For more information about UV trends and safe sun practices, visit Sankt Goar UV Index.

Maximum UV Index Levels in Sankt Goar for September

The chart shows the monthly maximum UV Index (UVI) for Sankt Goar 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.
JanFebMarAprMayJunJulAugSepOctNovDec234578875421
Data source: Sankt Goar 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 Sankt Goar

September in Sankt Goar is a delightful transition from the sun-soaked heights of summer into the gentle embrace of autumn. With 320 hours of sunshine, this month boasts a remarkable glow that rivals the vibrancy of July and August, though it marks a natural dip from July's peak of 411 hours. As the warmth begins to mellow, visitors can relish in the lingering brightness that casts a golden hue over the picturesque landscapes. This consistent sunshine, following a bustling summer, offers a perfect backdrop for exploring the charming town, making September an ideal time to soak in the culture and beauty of the Rhine Valley before the crispness of October sets in.

Monthly Sunshine Duration in Sankt Goar: September Highlighted

The September sunshine duration represents the total number of hours Sankt Goar 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.
JanFebMarAprMayJunJulAugSepOctNovDec104h197h265h344h391h396h411h384h320h235h168h114h
Data source: Sankt Goar September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sankt Goar During September

In Sankt Goar, Germany, the likelihood of sunny weather in September stands at a notable 39%, marking a transitional shift as summer gives way to autumn. This percentage reflects a moderate increase from the summer months, where the sun shines approximately 30% of the time in August. As the year progresses into the cooler months, the chance of sunlight diminishes, plunging to 25% in October and continuing to decline through winter. Overall, September offers a favorable opportunity for enjoying the outdoors, as it retains a decent amount of sunshine—making it a lovely time to explore the picturesque landscapes along the Rhine.

Percentage of Sunny Days in September in Sankt Goar

The chart illustrates the percentage of sunny days in Sankt Goar 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 Sankt Goar experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec9%31%42%43%29%31%32%30%39%25%17%12%
Data source: Sankt Goar September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sankt Goar in September

In Sankt Goar, Germany, September marks a noticeable shift in daylight as summer gradually transitions to autumn. With an average of 12 hours of daylight, the month showcases a gentle decline from the 16 hours experienced in June, reflecting nature’s subtle shift towards shorter days. This tapering off follows a consistent pattern where daylight peaks in May and June, before gradually waning in the fall. As the vibrant colors of early autumn begin to appear, September’s sunlight still provides ample time to bask in the beauty of this scenic town, while hinting at the quieter, cozier days of October ahead.

Average Daylight Hours in Sankt Goar for September

The chart illustrates the variation in daylight duration in Sankt Goar throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 34m10h 4m11h 55m13h 49m15h 27m16h 19m15h 51m14h 23m12h 33m10h 40m8h 59m8h 6m
Data source: Sankt Goar daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Sankt Goar

As the summer fades and September arrives in Sankt Goar, Germany, the winds gently begin to calm, with an average speed of only 2.1 m/s (5 mph). This modest breeze stands out as one of the year's lightest, marking a notable shift from the springtime and summer months, where wind speeds frequently reached around 3.5 m/s (8 mph). The decline in wind speed reflects the transition into autumn, as the region embraces cooler temperatures and a more tranquil atmosphere. Following September, wind speeds gradually increase again in October, hinting at the dynamic weather patterns that characterize this picturesque riverside town throughout the year.

Average September Wind Speed in Sankt Goar

The chart displays monthly wind speed patterns in Sankt Goar, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.53.33.22.83.52.32.52.82.1 m/s3.12.53.0
Data source: Sankt Goar September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Sankt Goar Compares to Other Months

The weather in Sankt Goar changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Sankt Goar and find detailed weather information for every month.

September and January present strikingly different weather patterns. In September, temperatures range from a mild 3°C (38°F) at night to a warm 31°C (88°F) during the day, with an average of 15°C (59°F). The humidity is notably high at 82%, accompanied by 49 mm (1.9 in) of rainfall over about 7 days. In contrast, January brings much colder conditions, with temperatures dropping to a chilly -11°C (12°F) at night and a maximum of only 12°C (53°F) during the day, averaging just 2°C (36°F). This month also sees increased precipitation at 64 mm (2.5 in) across approximately 12 days, along with even higher humidity at 92%. For more details on the January climate, you can check Sankt Goar weather in January.

September and February present contrasting weather experiences. In September, temperatures can range from a mild 3°C (38°F) to a warm maximum of 31°C (88°F), with an average of 15°C (59°F), making it a comfortable month for outdoor activities. The precipitation totals 49 mm (1.9 in) over about 7 days, and humidity is relatively high at 82%. In contrast, February is much colder, with temperatures dipping as low as -12°C (11°F) and peaking at 18°C (65°F), averaging only 3°C (38°F). This month sees a slightly higher precipitation level of 58 mm (2.3 in) spread over 12 days, and the humidity rises to 90%. For more specific weather details, you can check Sankt Goar weather in February.

When comparing the weather between September and March, stark contrasts emerge. In September, temperatures range from a cool 3°C (38°F) at night to a warm 31°C (88°F) during the day, resulting in an average of 15°C (59°F). This month experiences a relatively moderate amount of precipitation at 49 mm (1.9 in) over about 7 days, with humidity at 82%. In contrast, March exhibits much chillier conditions, with a minimum temperature plunging to -12°C (10°F) and an average temperature of 6°C (42°F), peaking at 22°C (71°F). Precipitation is significantly higher in March at 71 mm (2.8 in), falling on 14 days and accompanied by higher humidity at 87%. For a closer look at March weather in Sankt Goar, you can visit Sankt Goar weather in March.

When comparing the weather in September and April, we see distinct seasonal differences. September generally offers milder temperatures, with minimums around 3°C (38°F) and maximums reaching up to 31°C (88°F), resulting in a comfortable average of 15°C (59°F). In contrast, April features cooler weather, with minimum temperatures dropping to -4°C (26°F) and maximums of 26°C (79°F), creating an overall average of 9°C (49°F). Rainfall is slightly less in September at 49 mm (1.9 in) over 7 days compared to April's 38 mm (1.5 in) of precipitation over 9 days. Despite the increased frequency of rain in April, humidity remains relatively high in both months, with September at 82% and April at 83%. For more insights, you can check Sankt Goar weather in April.

September and May exhibit distinct weather patterns in terms of temperature and precipitation. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 31°C (88°F), with an average of 15°C (59°F) and relatively high humidity at 82%. With 49 mm (1.9 in) of precipitation over 7 days, it can be a bit wet. In contrast, May presents milder conditions, with a minimum temperature of 0°C (31°F) and a similar maximum of 31°C (89°F), but with an average of 13°C (55°F). It experiences higher precipitation at 71 mm (2.8 in) over 12 days, accompanied by a slightly lower humidity of 76%. For a comprehensive look at May's weather, check out Sankt Goar weather in May.

When comparing the weather in September and June, there are notable differences in temperature and precipitation patterns. September showcases a wider temperature range, with minimums dropping to 3°C (38°F) and maximums reaching 31°C (88°F), while the average temperature hovers around 15°C (59°F). In contrast, June has a milder minimum temperature of 7°C (44°F) and can get as warm as 33°C (91°F), with an average of 18°C (65°F). Additionally, June tends to be wetter, receiving 80 mm (3.1 in) of precipitation over 11 days compared to September's 49 mm (1.9 in) over just 7 days. This results in a higher humidity level in September at 82% versus June's 74%. For more detailed information on June weather, check Sankt Goar weather in June.

When comparing the weather in September and July, there are notable differences in temperature and precipitation. September experiences a more moderate temperature range, with a minimum of 3°C (38°F) and a maximum of 31°C (88°F), averaging around 15°C (59°F). In contrast, July is warmer, with temperatures ranging from a minimum of 7°C (46°F) to a maximum of 37°C (100°F), averaging 19°C (66°F). Precipitation levels are higher in July, totaling 69 mm (2.7 in) over 11 days, compared to September's 49 mm (1.9 in) over 7 days. Additionally, September has a higher humidity level of 82%, while July maintains a lower humidity at 74%. For a more detailed look at July weather, you can check out Sankt Goar weather in July.

In comparing the weather of September to August, it's evident that September experiences cooler temperatures overall, with a minimum of 3°C (38°F) compared to August's minimum of 6°C (42°F). The average temperature also drops from 19°C (66°F) in August to 15°C (59°F) in September, while maximum temperatures are somewhat milder, reaching 31°C (88°F) in September versus August's peak of 34°C (93°F). Additionally, September sees slightly less precipitation at 49 mm (1.9 in) over 7 days compared to August's 65 mm (2.6 in) in 13 days, although humidity levels are higher in September at 82%, compared to 75% in August. For more insights on August weather, you can visit Sankt Goar weather in August.

In comparing the weather between September and October, we see a distinct shift in temperatures and precipitation patterns. September enjoys a broader temperature range, with minimums around 3°C (38°F) and maximums peaking at 31°C (88°F), averaging 15°C (59°F). However, October brings cooler temperatures, dipping as low as 0°C (32°F) and averaging 11°C (51°F) with maximum temperatures reaching 24°C (76°F). Additionally, October experiences slightly more precipitation at 57 mm (2.2 in) over 12 days compared to September's 49 mm (1.9 in) over 7 days. The humidity also increases in October, rising to 88% from September's 82%. For a more detailed look at the climate, check out Sankt Goar weather in October.

September and November offer distinctly different weather experiences. In September, temperatures range from a mild 3°C (38°F) at night to a warm maximum of 31°C (88°F) during the day, with an average temperature of 15°C (59°F). The month sees less precipitation, totaling 49 mm (1.9 in) over 7 days, and has a humidity level of 82%. In contrast, November brings cooler temperatures with a minimum of -3°C (27°F) and a much lower average of 5°C (42°F), peaking at 19°C (67°F). Precipitation remains similar at 48 mm (1.9 in), but over more days at 11, alongside a higher humidity level of 90%. For more detailed insights into the weather during this time, check Sankt Goar weather in November.

In September, the weather is generally warmer, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 31°C (88°F) and an average of 15°C (59°F). The month experiences moderate precipitation of 49 mm (1.9 in) over about 7 days, with humidity at 82%. In contrast, December brings significantly cooler temperatures, with a minimum of -6°C (22°F) and a maximum of just 13°C (56°F), averaging around 3°C (38°F). This month is also wetter, with 98 mm (3.9 in) of precipitation spread over 17 days and higher humidity levels at 92%. For more detailed insights into the weather during this month, you can check Sankt Goar weather in December.

Compare Sankt Goar's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Sankt Goar

In September, Sankt Goar experiences a unique blend of warm days and chilly nights, setting it apart from the sweltering summer months and the crispness of autumn. With an average temperature that gently dips from the high summer heat, visitors will enjoy pleasant afternoons perfect for exploring the picturesque landscapes. While rainfall makes its presence felt with about a week of precipitation, the humidity remains notably high. This creates a cozy ambiance, ideal for enjoying local wines by the river. Those interested in a detailed overview of the changing weather patterns can explore more at Sankt Goar Climate.