Last updated: August 27, 2025
September in Groningen, Netherlands offers a delightful blend of moderate temperatures and a splash of autumnal charm. With a maximum of 29°C (85°F), days can still feel warm, while the average temperature sits comfortably at 15°C (59°F), ideal for outdoor activities. However, as summer wanes, crisp mornings can dip to a cool 5°C (42°F). The month sees 67 mm (2.6 in) of rainfall spread across 12 days, contributing to the region's lush greenery. Coupled with a high humidity of 83%, the atmosphere is rich and vibrant, making September a unique time to experience Groningen's beauty and culture.
As September rolls into Groningen, the city experiences a delightful transition from summer's warmth to the crispness of autumn. Temperatures during this month typically range from a minimum of 5°C (42°F) to a maximum of 29°C (85°F), with an average around 15°C (59°F). This moderate climate is a refreshing change after the heat of August, showcasing a steady decline in temperatures as days grow shorter. The pleasant warmth still invites outdoor activities, making it an ideal time to explore the city’s vibrant parks and canals before the chill of October sets in. As September progresses, the increasingly cool nights hint at the seasonal shift, creating a perfect backdrop for cozy evenings and the first signs of fall foliage.
September in Groningen presents a notable transition in the weather, characterized by an average precipitation of 67 mm (2.6 in), which is consistent with the wetter summer months yet significantly less than the peak rainfall of July and August. With 12 rainy days, these early autumn showers find a harmonious balance, allowing for both lush greenery and comfortable outdoor activities. This month often acts as a bridge, showcasing an increasing trend in rainfall from the drier spring months while hinting at the more pronounced precipitation that typically arrives in October. As the days shorten and temperatures begin to dip, September's mix of cloud cover and occasional sun sets the stage for the cozy autumn ahead.
In September, humidity levels in Groningen experience a slight uptick to 83%, signaling the transition from summer's drier air to the more moisture-laden conditions of fall. This modest increase follows a trend of decreasing humidity from the winter months, where levels hover around 88%, to the summer's moderate 75%. As the region moves into autumn, humidity begins to rise again, hinting at the approaching chill of winter when percentages climb back to the higher end of the spectrum, around 86% to 88%. Overall, September's humidity serves as a bridge between the fading warmth of summer and the crispness of the upcoming season.
As September rolls into Groningen, the UV Index dips to 5, categorizing it as moderate and allowing for a burn time of approximately 30 minutes. This marks a transition from the high levels experienced during the summer months, where UV indices peaked at 8 in June. Although sun exposure remains a consideration, the cooler temperatures and decreasing UV levels provide a more comfortable environment for outdoor activities. It's a great time to enjoy the mild autumn sun while keeping skin protection in mind. For more information on UV trends and tips, check out Groningen UV Index.
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As September arrives in Groningen, the city basks in a vibrant 319 hours of sunshine, a delightful culmination of the summer months. This marks a gentle decline from the peak of 405 hours in July, but still reflects a significant bounty of bright days compared to the dimmer winter months ahead. Following the sun-drenched days of May and June, where citizens enjoyed 404 and 396 hours respectively, September provides a warm transition into autumn. Although daylight decreases as October approaches, the lingering warmth of summer makes September a cherished time, offering residents and visitors alike a chance to soak up the last rays before they retreat into the chill of winter.
In September, Groningen enjoys a 30% chance of sunny weather, maintaining a steady outlook akin to the summer months of July and August. This transitional period from summer to autumn sees a slight dip in sunshine potential, but the city's weather remains more favorable than the chillier months ahead. As the year progresses, the likelihood of sun decreases, hitting a low of 18% in November. Despite this decline, September still presents a promising opportunity for those hoping to bask in some late-season sun before the dreary days of winter set in.
As summer fades into autumn, September in Groningen, Netherlands, offers a balanced 12 hours of daylight, a gentle downshift from the longer days of July and August. This month marks the transition towards shorter days, following a peak of 16 hours during the vibrant summer months. The gradual decrease in daylight begins to hint at the cozy atmosphere of autumn, setting the scene for crisp mornings and early sunsets. Notably, after the lively spring, where daylight stretches to 14 hours in April and 15 hours in May, September serves as a delicate bridge into the darker months ahead, such as October and November, where daylight dips to 10 and 8 hours respectively.
As September rolls into Groningen, the winds begin to mellow, with an average speed of 3.5 m/s (8 mph), slightly lower than the preceding months. This gentle breeze ushers in the transition from the vibrant summer months, where winds were consistently above the 4 m/s mark. The trend indicates a gradual shift as autumn approaches, suggesting a serene yet dynamic change in the air. With the chill of October on the horizon, which boasts a brisker average of 5.1 m/s (11 mph), September serves as a calm prelude to the more vigorous winds that accompany the later fall months. Overall, the evolving wind patterns reflect the beauty of seasonal change, inviting residents and visitors alike to experience Groningen’s transforming landscape.
Weather in Groningen varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Groningen, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather patterns. In September, temperatures range from a pleasant minimum of 5°C (42°F) to a warm maximum of 29°C (85°F), with an average of 15°C (59°F). This month also experiences a fair amount of precipitation, totaling 67 mm (2.6 in) over about 12 days, accompanied by relatively high humidity at 83%. In contrast, January is much cooler, with temperatures dipping as low as -7°C (19°F) and peaking at a mild 13°C (57°F), averaging around 4°C (39°F). Precipitation is slightly lower at 59 mm (2.3 in) over 13 days, while humidity rises to 88%. For a detailed look at the specific weather conditions during this winter month, you can check out Groningen weather in January.
September and February in Groningen present significantly contrasting weather conditions. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 29°C (85°F), with an average of 15°C (59°F). The month experiences about 67 mm (2.6 in) of precipitation over 12 days, accompanied by a relatively high humidity level of 83%. In stark contrast, February sees much colder temperatures, with a minimum of -12°C (10°F) and a maximum of 18°C (64°F), averaging only 4°C (40°F). Precipitation drops slightly to 57 mm (2.3 in) over 11 days, albeit with an increased humidity of 88%. For a deeper dive into the unique weather patterns in February, check out Groningen weather in February.
September and March present contrasting weather patterns, reflecting their positions within the seasons. In September, temperatures range from a mild 5°C (42°F) to a warm 29°C (85°F), with an average of 15°C (59°F), and while precipitation is similarly measured at 67 mm (2.6 in) over about 12 days, the humidity is slightly lower at 83%. In contrast, March experiences colder temperatures, with a minimum plunging to -10°C (15°F) and a maximum of 20°C (68°F), averaging just 6°C (43°F). The precipitation remains comparable at 67 mm (2.7 in) but falls over 13 days, accompanied by a slightly higher humidity of 86%. For more detailed insights into March weather, you can visit Groningen weather in March.
In September, temperatures in Groningen range from a minimum of 5°C (42°F) to a maximum of 29°C (85°F), with an average of 15°C (59°F). This month experiences around 67 mm (2.6 in) of precipitation over approximately 12 days, accompanied by a humidity level of 83%. In contrast, April presents cooler temperatures, with minimums dipping to -2°C (28°F) and maximums reaching up to 27°C (81°F), averaging 9°C (48°F). Precipitation during April is lower at 44 mm (1.7 in), occurring over about 9 days, with a similar humidity level of 84%. For more detailed weather trends, you can explore Groningen weather in April.
September and May exhibit similar maximum temperatures, with both months reaching highs of 29°C (85°F). However, September typically enjoys a warmer average temperature of 15°C (59°F) compared to May's cooler average of 12°C (55°F). While both months experience a comparable level of precipitation—67 mm (2.6 in) in September and 68 mm (2.7 in) in May—the number of rainy days is slightly higher in May, totaling 13 days versus 12 in September. Additionally, humidity levels are slightly elevated in September at 83%, compared to 80% in May, making September feel a touch more humid. For a closer look at May’s weather specifics, check out Groningen weather in May.
In comparing the weather of September and June, we can observe notable differences in temperature and precipitation. September experiences a temperature range from a minimum of 5°C (42°F) to a maximum of 29°C (85°F), with an average of 15°C (59°F). In contrast, June has slightly warmer conditions, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 33°C (92°F), averaging at 17°C (63°F). When it comes to precipitation, September receives about 67 mm (2.6 in) over 12 days, while June has a bit more, with 78 mm (3.1 in) falling over 11 days. Additionally, September tends to be more humid at 83%, compared to June's 75%. For more detailed insights, you can check out Groningen weather in June.
In comparing the weather of September and July, September tends to be cooler with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 29°C (85°F), while July is warmer, with temperatures between 8°C (47°F) and a peak of 35°C (95°F). Additionally, September experiences an average temperature of 15°C (59°F) compared to July's 18°C (64°F). Precipitation is more frequent in July, totaling 95 mm (3.7 in) over 14 days, whereas September sees 67 mm (2.6 in) of rain over 12 days. Despite being less rainy, September has a higher humidity level at 83% compared to July's 75%. For a more detailed look at July's climate, you can refer to Groningen weather in July.
In comparing the weather between September and August, September experiences cooler temperatures, with a minimum of 5°C (42°F) and a maximum of 29°C (85°F), resulting in an average of 15°C (59°F). In contrast, August boasts warmer conditions, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 34°C (93°F) and an average of 18°C (65°F). While September sees a total precipitation of 67 mm (2.6 in) over 12 days, August is slightly wetter with 89 mm (3.5 in) of rain spread across 16 days. Additionally, September's humidity is higher at 83% compared to August's 75%. For more detailed information, you can check Groningen weather in August.
September and October exhibit a noticeable transition in weather patterns. September starts off relatively warm, with average temperatures around 15°C (59°F) and highs reaching up to 29°C (85°F). However, as the month progresses, temperatures begin to dip, leading into October's cooler conditions, where average temperatures drop to 12°C (53°F), with lows reaching as low as -1°C (31°F).
In terms of precipitation, October is slightly wetter, with 85 mm (3.3 in) of rain over 15 days, compared to September's 67 mm (2.6 in) over 12 days. Additionally, humidity remains consistently high in both months, with October registering at 86% compared to September's 83%.
For a more detailed look at October's weather, you can check out Groningen weather in October.
September and November exhibit notable differences in weather conditions. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 29°C (85°F), with an average of 15°C (59°F). The month typically sees around 67 mm (2.6 in) of precipitation over 12 days, accompanied by a humidity level of 83%. In contrast, November experiences colder temperatures, with a minimum of -1°C (30°F) and an average of 7°C (45°F), peaking at 18°C (65°F). Precipitation decreases slightly to 51 mm (2.0 in) over the same number of rainy days, while humidity rises to 87%. For more detailed information on weather specifics, check out Groningen weather in November.
September and December showcase a notable contrast in weather conditions. In September, temperatures range from a mild minimum of 5°C (42°F) to a warm maximum of 29°C (85°F), with an average of 15°C (59°F). The month experiences about 67 mm (2.6 in) of precipitation over roughly 12 days, accompanied by a humidity level of 83%. In contrast, December introduces colder temperatures, with a minimum of -7°C (19°F) and a maximum of 13°C (55°F), averaging at just 5°C (41°F). Although it has slightly more precipitation at 74 mm (2.9 in) spread across approximately 16 days, the humidity rises to 86%, adding to the chilly atmosphere. For more specific insights on winter conditions, check out Groningen weather in December.
September in Groningen marks a notable transition as summer wanes, offering a blend of warm days and crisp evenings. With maximum temperatures occasionally reaching a pleasant 29°C, the month provides a gentle reminder of summer's warmth while swinging towards autumn's embrace. Relative to the peak summer months, September sees an uptick in precipitation, averaging 67 mm over about 12 days, which contributes to its characteristic humidity of 83%. This combination of warm afternoons and cooler nights, along with an increased likelihood of rain, sets September apart as a month of change, perfect for enjoying the evolving landscape. For more insights on the nuances of weather patterns, check out Groningen Climate.