Last updated: August 27, 2025
In September, Arnhem experiences a delightful transition as the summer heat begins to wane. The maximum temperature can reach a warm 31°C (89°F), while the average hovers around a comfortable 15°C (59°F), and chilly nights can dip to a brisk 3°C (38°F). Autumn rains make their entrance, with 59 mm (2.3 in) of precipitation spread over 10 days, contributing to the vibrant fall foliage. This month, humidity remains relatively high at 81%, creating a lush and invigorating atmosphere perfect for outdoor activities and exploration amidst the changing seasons.
In September, Arnhem experiences a gradual transition from the warmth of summer to the cooler autumn months. The minimum temperature hovers around 3°C (38°F), providing a crisp freshness to the air, while the average reaches a comfortable 15°C (59°F). Days are still inviting with a maximum of 31°C (89°F), allowing for lingering outdoor activities before the chill sets in. This month marks a delightful balance, as the warmth begins to wane, offering a gentle reminder of the changing seasons. It's an ideal time for strolls in the city's beautiful parks, where the lush greenery subtly begins to transform into the stunning fall palette.
In September, Arnhem experiences a shift in its weather patterns, with precipitation averaging 59 mm (2.3 in) across about 10 rainy days. This marks a decrease from the wetter summer months of July and August, which see 75 mm (3.0 in) and 79 mm (3.1 in) respectively. As the transition into autumn begins, September’s showers become gentler, offering a reprieve as the landscape transforms with the changing leaves. However, the amount of rain still contributes to the city's overall annual average, illustrating a trend of fluctuating yet consistent precipitation throughout the year. October soon approaches with a notable uptick in rainfall, signaling that autumn's embrace is just around the corner.
In September, Arnhem experiences a notable increase in humidity, with levels rising to 81% after the drier summer months. This uptick reflects a seasonal transition, as the city shifts from the warm, mild-air of summer to the cooler conditions of autumn. Compared to the previous months, where humidity dipped to its lowest in August at 71%, September's moisture levels signal a return to the more humid fall climate that characterizes the latter part of the year. As autumn settles in, humidity levels continue to climb towards October's 88%, marking a distinct trend from summer's relative dryness to the wetter season ahead.
As the summer concludes in Arnhem, the UV Index shows a notable shift in September, dropping to a moderate level of 5. This change indicates a reduction in sun intensity compared to the peak summer months, where the UV Index reached as high as 8 in June and July. With a burn time of approximately 30 minutes, sun exposure remains important to monitor, particularly for those enjoying outdoor activities. The moderate category encourages a balanced approach: you can soak in the sunshine, but it's wise to apply sunscreen and wear protective clothing when spending long periods outside. For further insights on UV trends throughout the year, check out the detailed info at Arnhem UV Index.
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In September, Arnhem enjoys a significant drop in sunshine compared to the heights of summer, but still basks in a respectable 318 hours of sunlight. This transition marks a gentle shift from the blazing 407 hours in July, as the city begins to embrace the softer light of autumn. Although the days grow shorter, the golden hues of early fall create a picturesque scene, inviting residents and visitors alike to savor the crisp air and vibrant foliage. As sunlight dwindles further into the coming months—plummeting to 128 hours by December—September stands out as a bridge between the sun-drenched days of summer and the cozy, reflective atmosphere of the winter months.
As summer fades into autumn, the likelihood of sunny weather in September in Arnhem, Netherlands, holds steady at 32%, maintaining a balance similar to the preceding months of July and August. This reflects a slight decline from the promising outlook of late spring, yet it remains higher than the early months of the year, with a 40% dip noted from April's peak. The early autumn transition hints at diminishing daylight and cooler temperatures, but September still offers enough sunny moments to enjoy the outdoors. With a blend of clear skies and lingering warmth, it's an ideal time for outdoor activities before the chill of October sets in.
As summer fades and autumn approaches, September in Arnhem, Netherlands, offers a gentle transition in daylight hours. With about 12 hours of daylight, the month reflects a noticeable decrease from the sun-drenched 16 hours of June and July, bringing a softer light that envelops the city. This gradual decline mirrors the natural rhythm of the seasons, where daylight peaks in summer and begins to retreat as winter looms. Interestingly, September retains a comfortable brightness that allows residents to savor lingering outdoor activities before the chill of October, which is marked by just 10 hours of daylight. Thus, September stands as a bridge, honoring the warmth of summer while gently ushering in the cooler days ahead.
As summer fades into autumn, September in Arnhem greets residents with a gentle breeze, recorded at an average wind speed of 3.0 m/s (7 mph). This slight drop from the summer months suggests a transition towards more tranquil weather patterns, as the winds have steadily decreased since June's peak of 2.9 m/s (6 mph). Interestingly, September's winds are among the softest of the year, mirroring the calm that often accompanies the onset of fall. The shift to these lighter gusts is a prelude to the crisp, invigorating air that October brings, which typically averages back up to 4.2 m/s (9 mph). This dance of wind speeds not only marks the changing seasons but also invites residents to enjoy leisurely strolls amidst the shifting foliage of this picturesque Dutch landscape.
Weather in Arnhem varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Arnhem, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present quite a contrast in weather. In September, temperatures can range from a cool 3°C (38°F) at night to a warm 31°C (89°F) during the day, with an average of 15°C (59°F). The month typically sees 59 mm (2.3 in) of rainfall over about 10 days, and the humidity averages 81%, making it relatively comfortable. In stark contrast, January experiences much colder conditions, with temperatures plunging to a minimum of -8°C (17°F) and peaking at a maximum of 14°C (58°F), resulting in an average temperature of just 4°C (39°F). This month also has slightly higher precipitation at 64 mm (2.5 in) over 13 days, along with higher humidity levels reaching 91%. For more details on January weather, you can check Arnhem weather in January.
September and February present starkly contrasting weather patterns. In September, temperatures range from a mild 3°C (38°F) at night to a warm 31°C (89°F) during the day, making it a transitional month with an average of 15°C (59°F). However, this month also experiences moderate precipitation of 59 mm (2.3 in) over about 10 days, with humidity levels at a comfortable 81%. In contrast, February is much colder, with nighttime lows plunging to -13°C (9°F) and daytime highs peaking at 18°C (66°F), averaging around 5°C (41°F). It sees slightly higher precipitation at 74 mm (2.9 in) and more rainy days, around 12, with humidity reaching a notable 90%. For a detailed look at February's climate, check Arnhem weather in February.
September and March present distinct contrasts in weather patterns. In September, temperatures range from a mild 3°C (38°F) to a warm 31°C (89°F), with an average of 15°C (59°F). The month enjoys a relatively lower precipitation level of 59 mm (2.3 in) over about 10 days, alongside a humidity level of 81%. In contrast, March features cooler temperatures, with a minimum of -8°C (18°F) and an average of just 7°C (44°F), peaking at 21°C (71°F). Precipitation is slightly higher at 71 mm (2.8 in) spread over 15 days, and humidity increases to 87%. For more detailed information about March weather, visit Arnhem weather in March.
In September, the weather in Arnhem tends to be warmer, with temperatures ranging from a minimum of 3°C to a maximum of 31°C, averaging around 15°C. The month experiences higher humidity at 81% and more precipitation of 59 mm over approximately 10 days. In contrast, April brings cooler conditions, with temperatures falling between -3°C and 28°C, averaging 10°C. Although the humidity is slightly higher at 84%, April sees less precipitation, totaling 35 mm over about 9 days. For a more detailed look at the weather specifics, you can check Arnhem weather in April.
In comparing the weather of September and May, both months showcase a range of temperatures, but with distinct characteristics. September experiences slightly warmer average temperatures, ranging from a minimum of 3°C (38°F) to a maximum of 31°C (89°F), while May sees temperatures between 0°C (33°F) and the same maximum of 31°C (88°F). Humidity levels are higher in September at 81%, compared to May's 77%, which can make the warmth feel more intense during that month. Additionally, precipitation levels are similar, with September receiving 59 mm (2.3 in) over about 10 days and May slightly higher with 61 mm (2.4 in) spread over 13 days. For a more detailed look at the weather specifics in May, check out Arnhem weather in May.
September and June offer distinct weather experiences for those in Arnhem. September features a wider temperature range, with minimums dipping to 3°C (38°F) and maximums reaching 31°C (89°F), resulting in an average of around 15°C (59°F). In contrast, June is generally warmer, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 34°C (94°F), yielding an average of 18°C (65°F). Both months experience notable precipitation, with September receiving 59 mm (2.3 in) over approximately 10 days and June slightly wetter at 69 mm (2.7 in) over 11 days. Interestingly, while September has higher humidity (81%) compared to June (74%), both months create unique atmospheres, appealing to different preferences. For a closer look at June's weather, check out Arnhem weather in June.
In comparing the weather patterns of September and July, notable differences emerge. September experiences a broader temperature range, with minimums dropping to 3°C (38°F) and maximums reaching up to 31°C (89°F), while July maintains milder lows of 7°C (45°F) and peaks as high as 39°C (103°F). Precipitation is also a factor, with September receiving 59 mm (2.3 in) over approximately 10 days, slightly less than July's 75 mm (3.0 in) across 12 days. Additionally, September's humidity is higher at 81%, compared to July’s 72%, which may contribute to a more uncomfortable feel during the autumn transition. For more detailed insights on July weather, visit Arnhem weather in July.
In comparing the weather of September and August, September experiences a noticeable drop in temperatures, with a minimum of 3°C (38°F) compared to August's 7°C (45°F). The average temperature in September is also cooler at 15°C (59°F) versus August's warmer 19°C (66°F), and the maximum temperature is lower in September at 31°C (89°F), compared to August’s peak of 35°C (95°F). Precipitation is slightly less in September at 59 mm (2.3 in) over 10 days, compared to August's 79 mm (3.1 in) over 14 days. Interestingly, September has a higher humidity level of 81%, compared to the more comfortable 71% humidity experienced in August. For more detailed statistics about August weather, you can visit Arnhem weather in August.
September and October present a noticeable shift in weather patterns. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 31°C (89°F), with an average of 15°C (59°F), making it a warmer month. However, October sees a drop in temperatures, with a minimum of 1°C (34°F), an average of 12°C (54°F), and a maximum of 27°C (80°F). Precipitation also increases in October, rising to 85 mm (3.3 in) over 12 days, compared to September’s 59 mm (2.3 in) over 10 days. The humidity level in October is slightly higher at 88%, compared to 81% in September. For more detailed information on October weather, you can visit Arnhem weather in October.
September is marked by a warmer climate, featuring temperatures ranging from a cool 3°C (38°F) to a balmy 31°C (89°F), with an average of 15°C (59°F). This month also experiences relatively moderate precipitation of 59 mm (2.3 in) over about 10 days, alongside humidity levels around 81%. In contrast, November brings a distinctly cooler atmosphere, with temperatures dropping significantly to a minimum of -3°C (27°F) and an average of only 7°C (45°F). The maximum temperature reaches 19°C (67°F), and while precipitation is somewhat lower at 52 mm (2.0 in), it occurs across 11 days, and humidity rises to 91%. For more detailed information about November weather specifically, you can check Arnhem weather in November.
In September, the weather is generally warm, with temperatures ranging from a low of 3°C (38°F) to a high of 31°C (89°F) and an average of 15°C (59°F). This month experiences roughly 59 mm (2.3 in) of precipitation over about 10 days, with humidity at a comfortable 81%. In contrast, December brings a significant drop in temperature, with a minimum of -4°C (24°F), an average of 5°C (42°F), and a maximum of 14°C (58°F). Additionally, December sees increased precipitation at 87 mm (3.4 in), spread out over 16 days, and higher humidity levels at 92%. For more details on December weather, you can visit Arnhem weather in December.
September in Arnhem presents a unique blend of weather that sets it apart from the hotter summer months and the chillier autumn ahead. With temperatures gradually cooling down from summer highs, the average settles at a comfortable 15°C (59°F), allowing for pleasant outdoor activities, though sporadic rainfall adds a touch of unpredictability. The 81% humidity often makes the air feel a bit thicker, while the 59 mm of precipitation over about 10 days serves as a reminder that autumn is on its way. This transitional month is ideal for experiencing the beauty of Arnhem's landscapes as they begin to shift into fall colors. For a deeper understanding of how weather varies throughout the year, explore Arnhem Climate.