Last updated: August 27, 2025
In September, De Koog experiences a delightful transition into autumn, with temperatures averaging around 16°C (62°F), peaking at a comfortable 23°C (74°F) during the warmer days. The evenings can turn cooler, dropping to a minimum of 12°C (54°F). This month sees about 99 mm (3.9 in) of rainfall spread over 13 days, creating a rich, vibrant atmosphere. With humidity levels hovering around 83%, the coastal town embraces a refreshing yet slightly damp feel, making it a perfect time for cozy strolls on the beach or explorations in nature.
In September, De Koog, Netherlands, experiences a delightful transition into autumn, with temperatures showing a clear upward trend from the preceding months. The average temperature settles comfortably at 16°C (62°F), a welcoming rise that invites both locals and visitors to explore the natural beauty of the surroundings. Nighttime lows hover around 12°C (54°F), creating a mild atmosphere, while daytime highs can reach a pleasant 23°C (74°F), perfect for outdoor activities. This noticeable warmth marks a significant shift from the cooler summer months, allowing for leisurely strolls along the beach and vibrant seasonal festivals to thrive as the days gradually shorten. As the leaves begin to change, September in De Koog offers a charming blend of warmth and early autumn charm, making it an ideal time to visit.
In September, De Koog experiences a notable shift in precipitation patterns, with 99 mm (or 3.9 in) of rain over approximately 13 days. This signifies a slight reduction from August’s 109 mm, but it remains substantial, indicating the onset of the wetter autumn months. In fact, September typically serves as a bridge between the lush summer rains and the more intense deluge of October, which averages 129 mm of rainfall. The trend of increasing precipitation carries into the following months, making September a pivotal moment in De Koog's climatological calendar, where summer gradually yields to the cozy, rain-drenched ambiance of fall.
As the summer months draw to a close, September in De Koog, Netherlands, experiences a shift in humidity, registering at 83%. This marks a slight increase from the drier August, which saw humidity levels dip to 78%, the lowest of the year. The gradual rise in moisture in September hints at the transition into the more humid autumn months, where levels typically hover in the mid-80s. This pattern reflects a consistent trend throughout the year, with humidity peaking in the winter months of January and February at a robust 87%. As nature prepares for the transition into fall, the mild uptick in humidity offers a glimpse of the lush, vibrant landscapes that characterize De Koog during this season.
As September rolls into De Koog, the UV Index settles at a moderate level of 5, reminiscent of the spring months but with a notable decrease from the very high summer peaks. This shift means you can enjoy the lingering warmth of early autumn while being mindful of sun safety; the burn time is about 30 minutes for unprotected skin. With the UV Index dropping from 8 in July and August, there's a sense of balance returning, offering an inviting opportunity to bask in the sun without the intense risk of high summer exposure. For more detailed insights on the UV Index, you can visit De Koog UV Index.
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As summer gracefully hands over the reins to autumn, September in De Koog offers a delightful balance of warmth and light, with 328 sunshine hours illuminating the landscape. This month sees a noticeable dip compared to the sun-soaked July and August, which boast over 400 hours each, yet it remains a captivating time for outdoor activities. The declining daylight is a gentle reminder of the transition from vibrant summer days to the cozy charm of autumn, creating a unique atmosphere that's perfect for leisurely strolls along the beach or enjoying the quaint seaside cafés. September’s abundant sunshine encapsulates the lingering warmth of summer while hinting at the cooler months ahead, making it a cherished time for visitors and locals alike.
In De Koog, Netherlands, September presents a 32% chance of sunny weather, marking a decline from the more vibrant summer months of June and July, both peaking at 41%. While the odds may not rival the sunny optimism of late spring, September’s sunshine potential remains relatively bright compared to the chillier fall months that follow. As the warmth of summer fades, visitors can still expect occasional sun-soaked days, making it a lovely time to enjoy the natural beauty of the region before autumn sets in.
As summer fades into autumn, September in De Koog brings a notable shift in daylight duration. With approximately 12 hours of daylight, this month sees a gentle decline from the sun-drenched heights of June and July, when the days were a luxurious 16 hours long. This transition hints at the changing seasons, as the vibrant energy of summer gradually recedes into the cozy embrace of fall. In the preceding spring months, daylight steadily increased, peaking in late spring with around 15 hours in May, but as autumn approaches, the days shrink to about 10 hours by October, signaling the impending chill and earlier sunsets ahead.
As September rolls into De Koog, the winds begin to shift, bringing a refreshing change with an average speed of 6.0 m/s (13 mph). This gentle breeze signifies a transition from the stronger gusts experienced earlier in the summer months—July's average of 5.9 m/s and August's 7.3 m/s—to a more moderate airflow that prepares the island for the brisker winds of autumn. Interestingly, September’s winds stand in stark contrast to the robust breezes of January and October, where speeds peak at 8.0 m/s (18 mph) and 8.8 m/s (20 mph), respectively. This pattern suggests a gradual buildup to the more potent autumn gales following the mellow end of summer.
Weather in De Koog varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in De Koog, focusing on differences in temperature, rainfall, humidity, and UV levels.
September weather is generally mild, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 23°C (74°F). The month sees considerable rainfall, with precipitation totaling 99 mm (3.9 in) over 13 days, and humidity levels around 83%. In contrast, January experiences much cooler temperatures, with averages ranging from -2°C (30°F) to 11°C (52°F). January also has lower precipitation levels, totaling 68 mm (2.7 in) over 14 days, but humidity is slightly higher at 87%. For more detailed information, you can check De Koog weather in January.
September and February offer distinctly different weather patterns. September experiences milder temperatures, with a minimum of 12°C (54°F) and an average of 16°C (62°F), peaking at a comfortable 23°C (74°F). In contrast, February brings a chillier climate, where temperatures drop to a minimum of -4°C (25°F) and only reach up to 11°C (52°F) on warmer days. While September sees significant precipitation of 99 mm (3.9 in) over approximately 13 days, February has less rainfall at 72 mm (2.8 in) across about 12 days. Additionally, February exhibits slightly higher humidity levels at 87%, compared to September's 83%. For more detailed insights into February weather, you can check this link: De Koog weather in February.
In September, the weather is generally milder, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 23°C (74°F), accompanied by higher humidity at 83% and substantial rainfall of 99 mm (3.9 in) over 13 days. In contrast, March brings cooler conditions, with average temperatures ranging from a minimum of -5°C (23°F) to a maximum of 12°C (55°F). The month sees 67 mm (2.6 in) of precipitation, also spread over 13 days, and a slightly higher humidity level at 86%. For more detailed information about the weather in March, you can check De Koog weather in March.
When comparing the weather in September and April, September boasts warmer temperatures, with an average of 16°C (62°F) and a maximum of 23°C (74°F), while April's average temperature is significantly cooler at 9°C (48°F), peaking at 17°C (63°F). In terms of precipitation, September is also notably wetter, experiencing 99 mm (3.9 in) of rain over 13 days, compared to April's 33 mm (1.3 in) over just 7 days. Humidity levels are relatively similar, with September at 83% and April slightly higher at 85%. For more details on April's climate, you can check De Koog weather in April.
September and May exhibit contrasting weather patterns, with September generally being warmer and wetter. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 23°C (74°F), while May sees cooler temperatures, from a minimum of 5°C (42°F) to a maximum of 21°C (70°F). Additionally, September experiences significantly more rainfall, with 99 mm (3.9 in) over 13 days compared to May's 45 mm (1.8 in) across just 8 days. Despite the slight difference in humidity, both months hover around 83-84%, making for a similar feel in the air, but September's warmth and precipitation create a distinct atmosphere. For a more detailed look at the weather, check out De Koog weather in May.
When comparing the weather in September and June, we see some notable differences. September experiences slightly higher temperatures with a minimum of 12°C (54°F) and a maximum of 23°C (74°F), while June has a slightly cooler minimum of 10°C (51°F) and a higher maximum at 25°C (78°F). Despite both months averaging around 16°C (61°F), September tends to be wetter, with 99 mm (3.9 in) of precipitation over 13 days compared to June's 71 mm (2.8 in) over just 9 days. Humidity levels are also comparable, with September at 83% and June at 81%. For more detailed information on June weather, you can check out De Koog weather in June.
September experiences slightly cooler temperatures compared to July, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 23°C (74°F), compared to July's minimum of 14°C (57°F) and maximum of 27°C (80°F). Additionally, September sees more precipitation, totaling 99 mm (3.9 in) over 13 rainy days, while July has less, with 71 mm (2.8 in) over 12 days. Humidity levels are relatively high in both months, at 83% in September and 80% in July, creating a mild but slightly damp atmosphere in early autumn. For more specific details about July weather, you can visit De Koog weather in July.
In comparing the weather patterns of September and August, notable differences emerge. September generally experiences slightly cooler temperatures, with an average of 16°C (62°F) compared to August's warmer 18°C (66°F). While both months see considerable rainfall, September has a total precipitation of 99 mm (3.9 in) over 13 days, slightly less than August's 109 mm (4.3 in) over 16 days. Additionally, September is characterized by higher humidity at 83%, compared to August’s 78%. For a more detailed look at the weather conditions during August, you can visit De Koog weather in August.
In September, temperatures are milder, with an average of 16°C (62°F) and highs reaching up to 23°C (74°F), making it a comfortable month for outdoor activities. However, as October arrives, the weather cools down significantly, with average temperatures dropping to 14°C (57°F) and maximums of 20°C (68°F). Additionally, October experiences increased precipitation, totaling 129 mm (5.1 in) over 18 days, compared to September's 99 mm (3.9 in) over 13 days, and humidity rises slightly to 86%. For more detailed insights into the weather during this time, check out De Koog weather in October.
In September, the weather is generally milder with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 23°C (74°F), averaging around 16°C (62°F). The month experiences around 99 mm (3.9 in) of precipitation over 13 days, with humidity levels at 83%. In contrast, November brings cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 16°C (61°F), averaging just 10°C (50°F). This month sees a bit less precipitation at 78 mm (3.1 in), but rain occurs on more days, totaling 16. The humidity also slightly increases to 87%. For a detailed look at the weather specifics in November, check out De Koog weather in November.
In September, the weather is generally milder, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 23°C (74°F). The month experiences considerable rainfall, totaling 99 mm (3.9 in) over about 13 days, and humidity levels hover around 83%. In contrast, December brings much colder conditions, with temperatures dipping to a minimum of -1°C (31°F) and only reaching an average high of 11°C (52°F). The precipitation increases slightly to 113 mm (4.5 in) over 18 days, accompanied by higher humidity levels at 86%. For more insights into December's climate, you can refer to this link: De Koog weather in December.
In September, De Koog experiences a delightful shift in weather as summer transitions to autumn. With an average temperature hovering around a comfortable 16°C (62°F), visitors can enjoy mild days and crisp evenings. Unlike the sizzling peak of summer, September's climate is marked by increased humidity, averaging 83%, and a noticeable uptick in precipitation, with rain gracing about half of the month. This blend of warmer days and potential showers brings a refreshing ambiance, making it an ideal time to explore the vibrant landscapes. For those interested in a deeper dive into the region's climate, be sure to check out De Koog Climate.