September Weather in De Haan, Belgium

Last updated: August 21, 2025

In De Haan, Belgium, the weather in September showcases a delightful transition from summer to autumn. With a maximum temperature reaching 26°C (80°F) and an average of 16°C (62°F), the days are pleasantly warm, ideal for outdoor activities. Evenings cool down with a minimum temperature of 10°C (50°F), providing a comfortable respite. However, note that precipitation can be expected, as 78 mm (3.1 in) falls over 11 days throughout the month. Humidity levels are fairly high at 82%, contributing to the lush, vibrant landscape characteristic of this charming coastal town. Embrace the changing season in De Haan, where each day offers a unique experience!

September Temperature in De Haan

In September, De Haan, Belgium experiences a delightful transition from the warmth of summer to the cooler embrace of autumn. With minimum temperatures around 10°C (50°F) and averages reaching 16°C (62°F), the weather invites outdoor exploration while still offering some of summer’s lingering charm. Daytime highs can soar up to 26°C (80°F), making it a perfect time for beach strolls and enjoying the scenic coastal beauty. As the month unfolds, the slight drop in temperatures emphasizes the evolving season, signaling a cozy shift as the days gradually shorten and the vibrant colors of fall begin to emerge. Whether basking in the sunny afternoons or savoring the crisp evenings, September in De Haan is a captivating blend of warmth and emerging autumnal spirit.

September Weather in De Haan: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in De Haan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In De Haan, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec424345495562656662564945
Data source: Temperature data for De Haan 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 De Haan

In September, De Haan, Belgium, experiences a notable transition in its weather patterns, with an average precipitation of 78 mm (about 3.1 in) falling over 11 days. This marks a slight decrease from the 86 mm (3.4 in) recorded in August, yet it remains significant, reflecting the lingering summer's influence while hinting at the onset of autumnal rains. The consistent number of precipitation days suggests a steady distribution of rainfall, contributing to the region's lush landscapes as it prepares for the wetter months ahead. October looms with even higher averages, indicating that the shift toward autumn is characterized by increasing moisture, setting the stage for the hefty 110 mm (4.3 in**) expected later in the season.

September Precipitation Trends in De Haan

The chart displays monthly precipitation patterns in De Haan, 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. In De Haan, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec77716937586262867811078129
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in De Haan

In De Haan, Belgium, September marks a subtle return to higher humidity levels, with an average of 82%—a refreshing shift from the drier, summer months, where humidity dipped to 76% in August. This transition signals the end of the warm season, as the air becomes more saturated, resembling the conditions seen earlier in the year. Notably, humidity peaks in the colder months, starting from 89% in October and climbing to 92% in both November and December. The fluctuation highlights a clear trend: as summer gives way to autumn, the lush, humid atmosphere of De Haan re-establishes itself, setting the stage for cozy, cooler days ahead.

September Average Humidity in De Haan

This chart illustrates the average monthly humidity levels in De Haan, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in De Haan is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%85%82%82%80%76%82%89%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in De Haan

As September rolls in, De Haan, Belgium, experiences a moderate UV Index of 5, signaling a transition from the high summer levels. After the intense sun exposure of July and August, where the UV Index peaked at 8, September offers a slightly less severe but still significant risk for skin damage, with a recommended burn time of 30 minutes. This month clues us in on the gradual descent of summer's sun, but it's still essential to stay protected, especially during midday hours. Residents and visitors should prepare for comfortable outdoor activities while remaining mindful of UV rays. For more detailed information, visit De Haan UV Index.

Maximum UV Index Levels in De Haan for September

The chart shows the monthly maximum UV Index (UVI) for De Haan 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. In September, the maximum UV index in De Haan typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: De Haan 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 De Haan

As the summer fades, September in De Haan, Belgium, serves as a radiant bridge between the sun-soaked months of July and August and the crisp fall that follows. With a notable 328 hours of sunshine, this month maintains a vibrant glow, even as daylight begins to wane. Comparatively, September's sunshine—while less than the peak summer months—still shines brighter than the later months of the year, suggesting a delightful atmosphere perfect for beach strolls and coastal adventures. The gradual decline in sunlight hours from the summer peaks of 425 hours in July to 328 in September hints at nature's transition, inviting visitors to savor the lingering warmth before autumn takes hold.

Monthly Sunshine Duration in De Haan: September Highlighted

The September sunshine duration represents the total number of hours De Haan 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.
JanFebMarAprMayJunJulAugSepOctNovDec122h200h283h357h411h419h425h395h328h248h203h158h
Data source: De Haan September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in De Haan During September

September in De Haan, Belgium, brings a noticeable blend of warmth and sunshine, with a 37% chance of sunny weather. This month stands out as a transitional period, as the likelihood of clear skies remains relatively consistent compared to the peak summer months. While the chances of sun slightly dip from August's 36%, they are still significantly higher than the dreary winter months, which can claim as low as 15% sunshine in both January and December. This trend illustrates the lingering warmth of summer, allowing for delightful outdoor activities even as autumn begins to unfold. As you plan your September adventures, relish the pleasant odds of enjoying sunny days in this charming coastal town.

Percentage of Sunny Days in September in De Haan

The chart illustrates the percentage of sunny days in De Haan 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 De Haan experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec15%30%39%51%38%35%39%36%37%32%22%15%
Data source: De Haan September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in De Haan in September

As the summer sun begins to wane in September, De Haan, Belgium enjoys a delightful 12 hours of daylight, striking a balance between the long, sun-soaked days of summer and the shorter, crisp days of autumn. Following the peak daylight hours of 16 in both June and July, there’s a noticeable but gentle decline in sunlight, with August seeing 14 hours. This gradual transition sets the stage for the upcoming months, where daylight continues to decrease, dropping to 10 hours in October and 8 hours in November. Overall, September serves as a beautiful bridge, allowing residents and visitors to savor the lingering warmth of summer while hinting at the cozy, shorter days ahead.

Average Daylight Hours in De Haan for September

The chart illustrates the variation in daylight duration in De Haan throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 26m9h 59m11h 55m13h 53m15h 35m16h 29m16h14h 28m12h 34m10h 37m8h 52m7h 56m
Data source: De Haan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in De Haan

In De Haan, Belgium, the September winds gently shift as summer bids farewell, with average speeds reaching 4.8 m/s (11 mph). This month marks a notable decrease from the breezy heights of the earlier summer months, showcasing a calming transition into autumn. While January to August experience stronger gusts, September's winds still maintain a refreshing presence, ensuring that the coastal charm of De Haan remains vibrant. As the temperatures begin to cool and nature dons its fall attire, the softening winds herald a more tranquil season ahead, subtly hinting at the gusts that will follow in October.

Average September Wind Speed in De Haan

The chart displays monthly wind speed patterns in De Haan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.46.56.05.85.74.25.15.84.8 m/s6.65.66.4
Data source: De Haan September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in De Haan Compares to Other Months

Weather in De Haan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in De Haan, focusing on differences in temperature, rainfall, humidity, and UV levels.

In September, the weather is generally mild and pleasant, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 26°C (80°F), averaging around 16°C (62°F). The humidity is quite high at 82%, and while there is some rainfall, with 78 mm (3.1 in) over 11 days, it often feels more comfortable due to the warmer temperatures. In contrast, January brings much colder conditions, with temperatures dropping to a minimum of -3°C (27°F) and peaking at 13°C (55°F), averaging just 6°C (43°F). The humidity increases to 91%, and while precipitation remains similar at 77 mm (3.0 in), it spans over 14 days, lending a distinctly chillier feel to the month. For more information, check out De Haan weather in January.

In September, the weather is pleasantly mild, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 26°C (80°F), making it ideal for outdoor activities. With 78 mm (3.1 in) of precipitation spread over 11 days, the humidity sits at a relatively comfortable 82%. In contrast, February brings much colder conditions, with temperatures dropping to a minimum of -5°C (24°F) and peaking at 14°C (57°F). Although precipitation is slightly lower at 71 mm (2.8 in) over 13 days, the humidity increases to 89%, creating a chillier atmosphere. For more detailed insights, you can check De Haan weather in February.

In September, the weather tends to be warmer, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 26°C (80°F), providing a pleasant transition into autumn. In contrast, March is considerably cooler, featuring an average temperature from a minimum of -5°C (24°F) to a maximum of 17°C (64°F). While September receives slightly more precipitation, totaling 78 mm (3.1 in) over 11 days, March has 69 mm (2.7 in) spread across 14 days, contributing to a relatively damp atmosphere during the early spring. Humidity levels are higher in March at 87%, compared to September's 82%, creating a distinctively brisk and crisp feeling in the air. For more detailed information, you can check De Haan weather in March.

In comparing the weather of September and April, it’s clear that September tends to be warmer, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 26°C (80°F) and an average of 16°C (62°F). In contrast, April experiences cooler temperatures, with lows around 2°C (36°F) and highs reaching up to 22°C (71°F), resulting in an average of 10°C (49°F). While September brings more rainfall overall at 78 mm (3.1 in) over 11 days, April has significantly less precipitation at 37 mm (1.5 in) across 8 days. Both months exhibit high humidity levels, with April slightly higher at 85% compared to September's 82%. For a detailed look at the weather during April, check out De Haan weather in April.

September typically offers warmer temperatures compared to May, with average highs reaching 26°C (80°F) versus May's maximum of 24°C (75°F). The minimum temperatures are also a bit higher in September, averaging 10°C (50°F) compared to May's 6°C (42°F). However, September experiences more rainfall, with 78 mm (3.1 in) of precipitation over 11 days, while May has a milder 58 mm (2.3 in) also over 11 days. Interestingly, humidity levels remain consistent at 82% for both months. For more detailed information on May weather, you can visit De Haan weather in May.

September and June exhibit similar temperatures, with both months showing a mild average around 16-17°C (62-63°F). However, September tends to have slightly cooler minimum and maximum temperatures, ranging from 10°C (50°F) to 26°C (80°F), compared to June's 11°C (51°F) to 27°C (81°F). Additionally, September is generally wetter, experiencing about 78 mm (3.1 in) of precipitation over 11 days, while June sees less rainfall, totaling 62 mm (2.5 in) over 8 days. Both months maintain a constant humidity level of 82%, contributing to a comfortable yet slightly damp atmosphere. For more specific details, you can check out De Haan weather in June.

When comparing the weather in September and July, we observe noticeable differences in temperature and precipitation. In September, the average temperature is a mild 16°C (62°F), with a minimum of 10°C (50°F) and a maximum of 26°C (80°F). This month also experiences higher precipitation, averaging 78 mm (3.1 in) over 11 days, along with an increased humidity level of 82%. In contrast, July tends to be warmer, with an average temperature of 18°C (65°F) and peak temperatures reaching up to 32°C (89°F). While July has lower precipitation at 62 mm (2.5 in), it also spans 11 days of rain but maintains a slightly lower humidity of 80%. For more detailed insights, you can check De Haan weather in July.

In comparing the weather of September and August, it is evident that August tends to be warmer, with minimum temperatures averaging 13°C (56°F) and maximums reaching up to 30°C (87°F). In contrast, September experiences cooler evenings, with a minimum of 10°C (50°F) and an average maximum of 26°C (80°F). Although August is slightly wetter, with 86 mm (3.4 in) of precipitation over 15 days, September has a relatively high humidity level of 82% and sees 78 mm (3.1 in) of rain across 11 days. For more details on the weather patterns during August, you can visit De Haan weather in August.

September generally enjoys milder temperatures, with averages around 16°C (62°F) and maximums reaching 26°C (80°F). In contrast, October sees a noticeable drop in temperature, averaging 14°C (57°F) with highs peaking at 22°C (72°F). While September experiences 78 mm (3.1 in) of rainfall over 11 days, October is wetter, with precipitation increasing to 110 mm (4.3 in) across 17 days. Humidity also rises slightly in October, reaching 89% compared to 82% in September. For more detailed information on the weather conditions, you can check De Haan weather in October.

September typically offers milder temperatures, with a minimum of 10°C (50°F) and an average of 16°C (62°F), peaking at 26°C (80°F). The weather is relatively pleasant, with 78 mm (3.1 in) of precipitation over about 11 days and humidity hovering around 82%. In contrast, November brings a noticeable chill, with temperatures dropping to a minimum of 2°C (36°F) and an average of 9°C (49°F), reaching a maximum of 17°C (64°F). Precipitation remains similar at 77 mm (3.0 in), but the rain is spread over 15 days, and humidity rises to 92%. For more details on November's weather, you can visit De Haan weather in November.

September and December offer markedly different weather experiences. In September, temperatures typically range from a mild minimum of 10°C (50°F) to a pleasant maximum of 26°C (80°F), with average temperatures around 16°C (62°F). However, this month sees a fair amount of rainfall, with approximately 78 mm (3.1 in) spread over 11 days and an average humidity of 82%. In contrast, December brings much cooler conditions, with temperatures dropping significantly—averaging around 7°C (45°F) and reaching a maximum of only 13°C (55°F). Additionally, December has a higher precipitation level of 129 mm (5.1 in) over 19 days and increased humidity at 92%. For more specifics on December weather conditions, you can visit De Haan weather in December.

Compare De Haan's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in De Haan

As summer transitions to autumn, September in De Haan offers a delightful blend of warm days and cooler nights. With temperatures averaging around 16°C (62°F), the pleasant warmth invites outdoor activities, while the occasional rain—spreading across 11 days—refreshes the landscape. This month marks a notable increase in humidity at 82%, creating a slightly heavier atmosphere compared to the drier summer months. For those seeking a balance of mild weather and fewer crowds, September is an ideal time to experience the charm of De Haan. Explore more about the climate trends that shape this coastal gem at De Haan Climate.