September Weather in Geisenheim, Germany

Last updated: February 26, 2025

In Geisenheim, Germany, September offers a delightful blend of warm and crisp weather, with maximum temperatures soaring up to 32°C (90°F) and an average of 15°C (60°F). The evenings can be quite cool, with minimum temperatures dipping to 2°C (37°F). While rainfall is moderate, totaling 46 mm (1.8 in) over approximately 7 days, the high humidity level of 85% creates a fresh atmosphere. This month is perfect for enjoying the transition from summer to autumn, showcasing the region's natural beauty.

September Temperature in Geisenheim

In September, Geisenheim experiences a delightful transition as summer gradually gives way to autumn. With temperatures ranging from a comfortable 2°C (37°F) at night to a pleasant 32°C (90°F) during the day, this month showcases a beautiful blend of warmth and coolness. The average temperature settles around 15°C (60°F), providing an inviting climate for outdoor activities. Notably, the highs begin to drop from the sweltering peaks of summer, offering a refreshing reprieve while still allowing for sunny days ideal for exploring the picturesque vineyards and landscapes that this region is famous for. As the month progresses, the crispness in the air hints at the approaching fall, making September a captivating time to experience Geisenheim's natural beauty.

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

The chart illustrates September temperature patterns in Geisenheim, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec363843495666676759524238
Data source: Temperature data for Geisenheim 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 Geisenheim

In September, Geisenheim experiences a noticeable shift in its weather patterns, with precipitation amounting to 46 mm (1.8 in), marking a decline from the summer months. Despite this drop, rainfall can still be expected across 7 days, offering a hint of the transition towards the wetter autumn season. This decrease in both precipitation and rainy days compared to August reflects a more stable climate, as temperatures cool and the lush vegetation begins to prepare for winter. Overall, September serves as a bridge between the warmth of summer and the impending chill of fall, where the landscape subtly shifts under the influence of lighter rain showers.

September Precipitation Trends in Geisenheim

The chart displays monthly precipitation patterns in Geisenheim, 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.
JanFebMarAprMayJunJulAugSepOctNovDec555464357180686046524794
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Geisenheim

As summer transitions to autumn in Geisenheim, September experiences a slight increase in humidity, reaching 85%. This marks a consistent pattern where humidity levels gradually decline from a high of 91% in January, dipping to a low of 79% in May before rebounding slightly in the latter months. The humidity gently rises again in September, echoing the shift from warm, moisture-rich summer air to the cooler, crisper conditions of fall. The gradual fluctuations throughout the year highlight Geisenheim's maritime climate, ensuring that even as the seasons change, the air remains notably humid.

September Average Humidity in Geisenheim

This chart illustrates the average monthly humidity levels in Geisenheim, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%83%79%82%83%84%86%88%89%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Geisenheim

In September, Geisenheim experiences a more moderate UV Index of 6, classified as high, indicating that sun exposure can still lead to skin damage in as little as 25 minutes. This marks a slight decrease from the intense summer months, where the UV Index peaked at 8 in both May, June, and July, demanding vigilant sun protection practices. As autumn approaches, residents can enjoy the outdoors with a bit more comfort, although it's wise to remain cautious, especially during midday when the sun's rays are strongest. For a detailed look at UV trends throughout the year, visit Geisenheim UV Index.

Maximum UV Index Levels in Geisenheim for September

The chart shows the monthly maximum UV Index (UVI) for Geisenheim 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.
JanFebMarAprMayJunJulAugSepOctNovDec234688876421
Data source: Geisenheim 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 Geisenheim

In Geisenheim, Germany, September marks the transition from the sun-drenched days of summer to the cooler embrace of autumn. With 315 hours of sunshine, this month shines brightly compared to the earlier months of the year, revealing a gradual decline from the peak summer hours of 406 in July. This notable drop is nuanced; while September still boasts a generous amount of sunlight, it signifies the beginning of shorter days ahead. Such trends depict a vibrant autumn landscape emerging, as the warmth of summer lingers just a little longer, inviting residents and visitors to savor these golden days before winter's chill sets in.

Monthly Sunshine Duration in Geisenheim: September Highlighted

The September sunshine duration represents the total number of hours Geisenheim 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.
JanFebMarAprMayJunJulAugSepOctNovDec107h196h260h341h380h386h406h380h315h235h162h121h
Data source: Geisenheim September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Geisenheim During September

As summer gradually gives way to autumn, September in Geisenheim, Germany, presents a promising chance for sunny weather, with a 41% likelihood of sunshine. This marks a notable increase from the sunniest months of spring, where chances hovered at 45% in April and dipped slightly in May and June. While September doesn't quite match the sunny optimism of mid-spring, it certainly stands out against the gloomier prospects of the subsequent months, such as October with just 27%. Overall, September offers a delightful window of opportunity for outdoor activities and enjoying the lingering warmth before the cooler days set in.

Percentage of Sunny Days in September in Geisenheim

The chart illustrates the percentage of sunny days in Geisenheim 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 Geisenheim experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec11%33%44%45%30%32%34%30%41%27%18%13%
Data source: Geisenheim September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Geisenheim in September

As the month of September arrives in Geisenheim, Germany, daylight begins to recede, offering a gentle preview of the approaching autumn. With approximately 12 hours of daylight, September marks a subtle transition from the sun-drenched days of summer, where June peaks at 16 hours, to the shorter days that characterize the coming months. This gradual shift reflects the natural rhythm of the seasons, as daylight decreases steadily from the vibrant 15 hours of July and 14 hours of August. The lingering warmth of early autumn still invites outdoor activities, but the days visibly shorten, reminding us of the cyclical beauty of nature as the year moves toward its close.

Average Daylight Hours in Geisenheim for September

The chart illustrates the variation in daylight duration in Geisenheim throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 37m10h 5m11h 55m13h 47m15h 25m16h 15m15h 49m14h 21m12h 33m10h 41m9h 1m8h 9m
Data source: Geisenheim daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Geisenheim

As September rolls into Geisenheim, Germany, the average wind speed takes a notable dip to 2.1 m/s (5 mph), marking it as one of the calmer months of the year. This decline follows the slight fluctuations seen through the summer, where the winds typically breezed along at around 2.4 to 2.6 m/s. Interestingly, September's soft breezes contrast sharply with the cooler, brisker air of early spring, which consistently recorded speeds near 3.0 m/s. This gentle wind pattern hints at the transition into autumn, inviting a serene ambiance that complements the vibrant foliage beginning to emerge. As temperatures cool, the light winds provide an ideal setting for leisurely strolls among the vineyards, where the whispers of September echo the serene charm of Geisenheim.

Average September Wind Speed in Geisenheim

The chart displays monthly wind speed patterns in Geisenheim, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.33.03.02.73.42.22.42.62.1 m/s2.82.42.8
Data source: Geisenheim September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Geisenheim Compares to Other Months

The weather in Geisenheim 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 Geisenheim and find detailed weather information for every month.

In September, the weather is notably warmer, with temperatures ranging from a minimum of 2°C (37°F) to a maximum of 32°C (90°F) and an average of 15°C (60°F). Despite the warmer conditions, it experiences about 46 mm (1.8 in) of precipitation over approximately 7 days, coupled with a humidity level of 85%. In contrast, January brings a much colder climate, with temperatures dropping to a minimum of -10°C (14°F) and peaking at 12°C (55°F), averaging around 2°C (36°F). This month sees slightly higher precipitation at 55 mm (2.2 in), spanning about 11 days, and a humidity level of 91%. For more details on January weather in Geisenheim, you can visit Geisenheim weather in January.

September and February present striking contrasts in weather conditions. In September, temperatures range from a cool 2°C (37°F) at night to a warm 32°C (90°F) during the day, with an average of 15°C (60°F). The month sees 46 mm (1.8 in) of precipitation over about 7 days, coupled with a relatively high humidity of 85%. In contrast, February experiences much colder temperatures, with lows plummeting to -11°C (12°F) and daytime highs averaging only 18°C (65°F), resulting in an average of just 3°C (39°F). Precipitation increases slightly to 54 mm (2.1 in) spread over 11 days, with humidity levels remaining high at 89%. For more detailed insights, visit Geisenheim weather in February.

In comparing the weather of September and March, one can observe notable differences in temperature and precipitation. September experiences a wider temperature range, with a minimum of 2°C (37°F), an average of 15°C (60°F), and a maximum reaching up to 32°C (90°F). In contrast, March starts off much colder, with a minimum of -11°C (12°F) and an average temperature of 6°C (43°F), peaking at 21°C (71°F). Additionally, September has less precipitation, totaling 46 mm (1.8 in) over about 7 days, whereas March sees more rainfall, with 64 mm (2.5 in) spread across 14 days. The humidity levels are fairly similar, with September at 85% and March slightly higher at 87%. For more specific insights about March weather, you can check Geisenheim weather in March.

In comparing the weather between September and April, we observe notable differences in temperature and precipitation. September boasts a wider temperature range, with minimums of 2°C (37°F), averages of 15°C (60°F), and maximums reaching up to 32°C (90°F). In contrast, April starts cooler, with minimums dropping to -3°C (26°F) and averaging 10°C (50°F), while maximums peak at 26°C (80°F). Precipitation is relatively similar, with September experiencing 46 mm (1.8 in) over 7 days and April with slightly less at 35 mm (1.4 in) across 8 days. Humidity levels are also comparable, with September at 85% and April slightly lower at 83%. For more details, check out Geisenheim weather in April.

The weather in September sees a wider temperature range, with minimums as low as 2°C (37°F) and maximums reaching up to 32°C (90°F), resulting in an average temperature of 15°C (60°F). In contrast, May starts off slightly cooler, with minimums around 0°C (33°F) and an average of 13°C (56°F), but it can also peak at 32°C (89°F). While both months feature occasional warm weather, September tends to be more humid, averaging 85% humidity compared to May's 79%. Additionally, May experiences more rainfall, totaling 71 mm (2.8 in) over about 12 days, whereas September has 46 mm (1.8 in) spread over 7 days. For a detailed look at May weather, check out Geisenheim weather in May.

In comparing the weather between September and June, we observe notable differences in temperatures and precipitation levels. September typically starts with a cooler minimum temperature of 2°C (37°F) compared to June's milder minimum of 7°C (45°F). The average temperature for September is 15°C (60°F), while June enjoys a warmer average of 19°C (66°F). However, September can reach a maximum of 32°C (90°F), nearly on par with June’s highest of 35°C (95°F).

Precipitation is another area of contrast; September sees a total of 46 mm (1.8 in) over 7 days, while June experiences higher rainfall at 80 mm (3.1 in) across 11 days. Humidity levels are relatively similar, with September at 85% and June slightly lower at 82%. For a more detailed view of June's weather patterns, you can refer to Geisenheim weather in June.

In comparing the weather between September and July, July tends to be warmer overall, with an average temperature of 20°C (68°F) compared to September's cooler average of 15°C (60°F). July also sees higher maximum temperatures, reaching up to 39°C (102°F), while September's maximum is a moderate 32°C (90°F). However, September experiences a slightly lower level of precipitation at 46 mm (1.8 in) over 7 days, compared to July's 68 mm (2.7 in) over 11 days. The humidity levels are fairly similar, with September at 85% and July at 83%. For more detailed information on July weather, you can visit Geisenheim weather in July.

In comparing the weather of September to August, September presents cooler overall temperatures, with a minimum of 2°C (37°F) compared to August's minimum of 6°C (43°F). The average temperature also drops from 19°C (67°F) in August to 15°C (60°F) in September, although September does push toward a higher maximum of 32°C (90°F) versus August's peak of 35°C (95°F). Precipitation is somewhat less in September, totaling 46 mm (1.8 in) over 7 days, compared to 60 mm (2.3 in) during 12 days in August. Humidity remains relatively consistent between the two months, with September at 85% and August at 84%. For more detailed insights, you can explore Geisenheim weather in August.

In September, temperatures range from a minimum of 2°C (37°F) to a maximum of 32°C (90°F), with an average of 15°C (60°F). The month typically sees 46 mm (1.8 in) of precipitation over about 7 days, accompanied by high humidity levels averaging 85%. In contrast, October experiences cooler temperatures, with a minimum of 0°C (32°F), an average of 11°C (52°F), and a maximum of 25°C (77°F). Precipitation increases slightly to 52 mm (2.0 in) over 11 days, and humidity rises to an average of 88%. For more details on weather specifics, check out Geisenheim weather in October.

September and November present a distinct shift in weather patterns. In September, temperatures range from a mild 2°C at night to a warm 32°C during the day, with an average of 15°C, making it a month that still carries the warmth of summer. The precipitation level is moderate at 46 mm over about 7 days, accompanied by high humidity at 85%. In contrast, November brings much cooler temperatures, with a minimum of -4°C and a maximum of 20°C, resulting in an average of just 5°C. Precipitation slightly rises to 47 mm over 11 days, and humidity increases to 89%, highlighting the transition into winter. To explore more about November's particular weather conditions, you can visit Geisenheim weather in November.

In September, the weather is notably warmer, with temperatures ranging from a minimum of 2°C (37°F) to a maximum of 32°C (90°F), averaging around 15°C (60°F). The month experiences relatively less precipitation, totaling 46 mm (1.8 in) over about 7 days, alongside a humidity level of 85%. In contrast, December brings much cooler conditions, with temperatures dropping significantly to a minimum of -6°C (21°F) and a maximum of 14°C (57°F), averaging just 3°C (38°F). The month is wetter as well, accumulating 94 mm (3.7 in) of precipitation over 18 days, with humidity rising slightly to 91%. For detailed insights about December's weather, you can visit Geisenheim weather in December.

Compare Geisenheim's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Geisenheim

As summer transitions into autumn, September in Geisenheim offers a delightful mix of warm days and cooler nights. Unlike the more blazing heat of July and August, the temperatures begin to moderate, providing a refreshing environment for outdoor activities and wine harvesting. While higher humidity levels at 85% may make the air feel warmer, the month still sees a decrease in precipitation compared to the summer months. With only about 46 mm of rain spread over seven days, September proves to be drier and more stable, ideal for enjoying the picturesque landscapes and vineyards that define this charming region. For a deeper understanding of the weather patterns throughout the year, explore Geisenheim Climate.