Last updated: August 27, 2025
September weather in Utrecht, Netherlands showcases a delightful blend of warmth and occasional rain, making it an intriguing month for visitors. With maximum temperatures reaching up to 31°C (88°F), the early days of September can feel quite summery. However, the average temperature settles around a comfortable 15°C (59°F), while evenings can be notably cooler, dipping to a minimum of 3°C (38°F). The month typically experiences 11 days of rainfall, accumulating a total of 73 mm (2.9 in), contributing to a humidity level of 82%. This mix of warmth and moisture creates a lush landscape, perfect for exploring the city's charming canals and historic sites.
In September, Utrecht experiences a delightful transition as summer gently yields to autumn. With temperatures ranging from a minimum of 3°C (38°F) to a maximum of 31°C (88°F), the city enjoys mild days perfect for outdoor activities. The average temperature sits comfortably at 15°C (59°F), making it an ideal time for strolls along the picturesque canals or exploring the vibrant city streets. As the month unfolds, you'll likely notice a gradual cooling trend, hinting at the crispness of fall just around the corner. This blend of warm days and cooler evenings creates a unique charm, inviting visitors to savor both the lingering warmth of summer and the subtle hints of autumn's arrival.
In September, Utrecht experiences an average precipitation of 73 mm (2.9 in), marking a subtle yet significant shift as summer transitions into autumn. With 11 days of rain, the month sees a slight decrease in both total rainfall and rainy days compared to the preceding August, which recorded 80 mm (3.2 in) over 14 days. This trend indicates a gradual easing of the heavy summer showers, preparing the city for the more persistent rains of October, typically the wettest month with an average of 86 mm (3.4 in). The steady precipitation in September contributes to the lush landscapes of the Netherlands, as the autumn hues begin to emerge, enriching both the scenery and the agricultural yields.
In Utrecht, Netherlands, September marks a transition as humidity levels return to 82%, mirroring the conditions experienced in May and June. This slight uptick from the summer's lower averages of 76% in August brings a refreshing, albeit damp, feel to the onset of autumn. Following the warm months, where humidity steadily declined, September's moisture levels create a more balanced atmosphere before the inevitable rise to 89% in October. This pattern highlights Utrecht's characteristic cycle of fluctuating humidity, setting the stage for the wetter and chillier months ahead.
As summer transitions into autumn, the UV Index in Utrecht shows a noteworthy shift in sun exposure levels. September sees a UV Index of 5, placing it in the moderate exposure category, which allows for about 30 minutes of safe sun exposure without protection. This decline from the peak UV Index of 8 in July highlights a gradual reduction in sun intensity as the days grow shorter. However, it's still essential to stay vigilant about sun protection, especially during midday when UV rays are strongest. Citizens and visitors alike can benefit from staying informed about solar conditions by checking resources like Utrecht UV Index.
UV Risk Categories
September in Utrecht offers a delightful transition between summer warmth and autumn's crispness, boasting 324 hours of sunshine. This month continues the trend of brightening days, following a peak in July when residents enjoyed 417 hours of sun. While June and August also glimmered with 409 and 392 hours respectively, September's sunshine signals a gentle shift, casting a warm glow upon the city as the days grow shorter. As the sunlight begins to wane into October's 239 hours, September serves as a beautiful reminder of summer's lingering touch, inviting both locals and visitors to bask in the lingering warmth before embracing the fall.
September in Utrecht offers a 32% chance of sunny weather, a slight decline compared to the summer months of July and August. Interestingly, this figure is on par with the sunlit possibilities seen in May and stands just above the average for autumn, suggesting that while the days may be getting shorter, there is still ample opportunity for outdoor enjoyment. As the vibrant hues of autumn begin to envelop the city, September offers a delightful blend of late summer warmth and the crispness of fall, making it an enchanting time to explore Utrecht’s charming landscape under the soft glow of the sun.
As September rolls in, Utrecht experiences a gradual shift in daylight, basking in 12 hours of sunlight—a steady decline from the summer's peak. This month marks a transition, as daylight hours decrease from the 16 hours enjoyed in June and July to 14 in August. The return to school and the onset of autumn gradually usher in shorter days, creating a cozy ambiance in the city. With 11 hours in March and 13 hours in April, it’s easy to see how the longer, brighter days of spring and summer pave the way for the reflective moments of fall. The rhythm of daylight in Utrecht beautifully mirrors the changing seasons, offering residents and visitors alike a chance to savor the early autumn light before it slips away further into the darker months ahead.
As September rolls into Utrecht, the wind takes on a gentler demeanor, averaging a calm 3.2 m/s (7 mph)—the least brisk of the year. This shift from the summer's mild breezes reflects a seasonal transition, as the winds generally trend upwards in speed from late autumn to early spring. July and August see slightly stronger gusts at around 3.4 m/s (8 mph), but by September, the air feels softer, hinting at the cozy embrace of fall. This gradual decline in wind speed not only alters the charm of the city’s canals and parks but also invites residents and visitors alike to enjoy the serene beauty of the changing season. Just two weeks later in October, the wind's personality flips back, bringing a brisk 4.5 m/s (10 mph), signaling a fresh start to the autumn months ahead.
Weather in Utrecht varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Utrecht, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather experiences. In September, temperatures range from a cool 3°C (38°F) at night to a warm 31°C (88°F) during the day, with an average of 15°C (59°F). This month sees considerable rainfall, with around 73 mm (2.9 in) spread over approximately 11 days, and humidity sits at a relatively high 82%. In contrast, January offers much colder temperatures, with a minimum of -8°C (18°F) and a maximum of 14°C (58°F), averaging just 4°C (40°F). Although it is less rainy in January, with 57 mm (2.3 in) of precipitation over 12 days, the humidity rises to 91%. For more detailed information on January weather, you can visit Utrecht weather in January.
In comparing the weather between September and February, one can observe notable differences in temperature and humidity. 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). This month experiences around 73 mm (2.9 in) of precipitation across 11 days and maintains a humidity level of 82%. In contrast, February sees significantly colder temperatures, with a minimum of -11°C (13°F) and a maximum of 18°C (65°F), averaging at 5°C (41°F). February has slightly lower precipitation at 69 mm (2.7 in) over 12 days, accompanied by higher humidity at 89%. For more detailed insights on February weather patterns, you can refer to Utrecht weather in February.
September and March exhibit distinct weather characteristics reflecting the transition between summer and winter. In September, temperatures range from a mild 3°C (38°F) at night to a warm average of 15°C (59°F) during the day, peaking at 31°C (88°F). The month sees an average precipitation of 73 mm (2.9 in) over 11 days, with a relatively high humidity of 82%. In contrast, March is cooler, with temperatures dipping to a low of -8°C (18°F) at night and averaging 7°C (45°F) during the day, reaching a maximum of 21°C (71°F). It experiences slightly less precipitation at 70 mm (2.8 in) but has more rainy days, totaling 14, and a slightly higher humidity of 87%. For detailed insights on March weather, you can refer to Utrecht weather in March.
When comparing the weather in September and April, notable differences emerge in temperature and precipitation patterns. September tends to be warmer, with average temperatures ranging from 15°C (59°F) to a maximum of 31°C (88°F), while April has cooler averages of 10°C (50°F) and a maximum of 27°C (81°F). Precipitation is also higher in September, with 73 mm (2.9 in) over 11 days compared to April’s 41 mm (1.6 in) over 9 days. Humidity levels are quite close, with September at 82% and April slightly higher at 85%. For a detailed look at April's weather, you can check Utrecht weather in April.
When comparing the weather in September and May, both months exhibit similar maximum temperatures, peaking at 31°C (88°F). However, September boasts a higher average temperature of 15°C (59°F) compared to May's average of 13°C (56°F), indicating a warmer transition into autumn. Precipitation levels are slightly higher in September at 73 mm (2.9 in) over 11 days, whereas May experiences slightly less rainfall at 65 mm (2.5 in) over 13 days. Humidity remains consistent at 82% in both months, creating a similar feel in the air. For more detailed insights about the weather in May, you can check out Utrecht weather in May.
When comparing the weather in September and June, we can observe some interesting differences. June tends to be warmer overall, with minimum temperatures starting at 8°C (47°F) compared to September's cooler 3°C (38°F). The average temperature in June is also slightly higher at 18°C (64°F), whereas September averages around 15°C (59°F). In terms of maximum temperatures, both months are quite similar, with June peaking at 32°C (91°F) and September reaching up to 31°C (88°F). Both months see comparable levels of precipitation—76 mm (3.0 in) in June and 73 mm (2.9 in) in September—over a similar number of rainy days (10 in June and 11 in September). Interestingly, humidity levels remain constant at 82% for both months. For a more detailed look at June weather, visit Utrecht weather in June.
In comparing September and July weather, September features a wider temperature range, with minimums dropping to 3°C (38°F) and maximums reaching 31°C (88°F), while July enjoys higher minimums at 8°C (47°F) and maximums peaking at a sweltering 38°C (100°F). Although both months experience similar levels of precipitation, with September at 73 mm (2.9 in) over 11 days and July at 71 mm (2.8 in) over 13 days, September feels slightly more humid at 82% compared to July's 80%. For those interested in more detailed July weather patterns, Utrecht weather in July provides a comprehensive overview.
In comparing the weather between September and August, notable differences emerge. September experiences a wider temperature range, with a minimum of 3°C (38°F) and a maximum of 31°C (88°F), reflecting cooler nights compared to August's milder minimum of 8°C (47°F) and a warmer high of 33°C (92°F). While both months see a significant amount of precipitation, September has 73 mm (2.9 in) over 11 days, slightly less than August's 80 mm (3.2 in) across 14 days. Additionally, September has a higher humidity of 82%, surpassing the 76% humidity recorded in August. For more details about the weather in August, you can visit Utrecht weather in August.
In comparing the weather between September and October, we see a notable transition. September typically exhibits a wider temperature range, with minimums around 3°C (38°F) and maximums reaching 31°C (88°F), offering an average of 15°C (59°F). During this month, precipitation is relatively moderate at 73 mm (2.9 in) over 11 days, while humidity levels are already quite high at 82%.
In contrast, October brings cooler temperatures, with minimums dropping slightly to 2°C (35°F) and maximums peaking at 26°C (78°F), resulting in a lower average of 12°C (54°F). This month also sees an increase in precipitation, totaling 86 mm (3.4 in) across 13 days, along with a rise in humidity to 89%. For more detailed information, you can explore Utrecht weather in October.
September and November weather present distinct contrasts. In September, temperatures are much warmer, ranging from a low of 3°C (38°F) to a high of 31°C (88°F), with an average of 15°C (59°F). This month sees a fair amount of rain, with precipitation totaling 73 mm (2.9 in) over 11 days, while humidity sits at a relatively comfortable 82%. In contrast, November is significantly cooler, with temperatures dipping as low as -2°C (28°F) and peaking at 19°C (66°F), leading to a much lower average of 7°C (46°F). Although November's total precipitation is less at 52 mm (2.1 in), it maintains rain on 11 days, coupled with a higher humidity level of 92%. For a deeper look into what to expect, visit Utrecht weather in November.
In comparison to September, December weather is notably colder, with average temperatures dropping from a mild 15°C (59°F) to a much chillier 6°C (42°F). The minimum temperature in December can plummet to as low as -4°C (25°F), whereas September remains above freezing at 3°C (38°F). Precipitation is also more frequent in December, occurring on 16 days and accumulating to 86 mm (3.4 in), compared to September's 73 mm (2.9 in) over 11 days. Additionally, humidity levels rise slightly, from 82% in September to 92% in December, contributing to a more damp and cold atmosphere. For more detailed insights, you can check Utrecht weather in December.
As summer gracefully transitions into autumn, September in Utrecht offers a unique blend of warmth and crisp air. With maximum temperatures occasionally reaching a sultry 31°C (88°F), the days still bask in the remnants of summer. However, the average chill sets in with evenings dipping to a refreshing 15°C (59°F), and at times, temperatures can plummet to a cool 3°C (38°F). The month also brings a fair share of rain, with around 73 mm (2.9 in) of precipitation spread over approximately 11 days, contributing to a notable humidity level of 82%. This combination makes September distinctly different from the drier, hotter summer months, ushering in the vibrant embrace of autumn. For a deeper understanding of what to expect throughout the year, explore the detailed insights on Utrecht Climate.