September Weather in Passendale, Belgium

Last updated: August 21, 2025

Experience the September weather in Passendale, Belgium, where temperatures range from a delightful maximum of 31°C (88°F) to a refreshing minimum of 5°C (42°F), with an average hovering around 16°C (61°F). This month showcases a mix of sun and rain, as evidenced by 54 mm (2.1 in) of precipitation spread over 10 days. With humidity levels at a notable 82%, September presents a varied backdrop, perfect for those seeking both warmth and the charm of mild autumnal conditions. Embrace the beauty of this transitional month in Passendale!

September Temperature in Passendale

As September unfolds in Passendale, Belgium, the transition from summer to autumn is palpable, marked by a pleasant shift in temperatures. With minimums settling around 5°C (42°F) and averages climbing to a comfortable 16°C (61°F), the month provides a lovely balance of warmth before winter sets in. The maximum temperatures can still reach a notable 31°C (88°F), reminiscent of summer's peak, creating an inviting atmosphere for outdoor activities. This pattern illustrates a gradual cooling trend, contrasting sharply with the scorching highs of July and August, yet still allowing for plenty of sun-soaked days. As nature begins to prepare for the fall, September in Passendale offers a delightful mix of lingering warmth and the early hints of autumn’s chill.

September Weather in Passendale: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Passendale, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Passendale, 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).
JanFebMarAprMayJunJulAugSepOctNovDec414346505663656560554743
Data source: Temperature data for Passendale 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 Passendale

In September, Passendale experiences a moderate precipitation level, with 54 mm (2.1 in) of rainfall spread over 10 days. This marks a slight dip compared to the wetter months of August and October, where rainfall reaches 71 mm (2.8 in) and 85 mm (3.3 in), respectively. As summer transitions to autumn, September's precipitation hints at the changing seasons, offering a balance between lingering summer rains and the upcoming autumn downpours. The gradual increase in rainfall from early in the year through to December is evident, with September acting as a crucial bridge between the drier months of late spring and the wet fall, setting the stage for the more intense precipitation that typically follows.

September Precipitation Trends in Passendale

The chart displays monthly precipitation patterns in Passendale, 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 Passendale, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec645963386066587154855796
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Passendale

In September, Passendale experiences a slight uptick in humidity, averaging at 82%. This marks a transition from the relatively comfortable levels of 76% in August, as the region prepares for the cooler months ahead. Interestingly, humidity remains consistent throughout the summer months, peaking in late autumn and winter with levels soaring up to 92% in November and December. The gradual increase in moisture levels from mid-summer into fall suggests a shift in the atmospheric conditions, creating a bridge between the warm, drier summer and the damp chill of winter. Overall, September's humidity serves as a reminder of the impending seasonal change, bringing with it a refreshing, albeit slightly muggier, feel to the air.

September Average Humidity in Passendale

This chart illustrates the average monthly humidity levels in Passendale, 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 Passendale 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 Passendale

As September unfolds in Passendale, Belgium, the UV Index dips to 5, reflecting a moderate exposure category that encourages some sun protection for outdoor enthusiasts. This marks a transition from the very high UV levels experienced in July and June, where a mere 15-minute burn time kept sun-lovers on their toes. After the peak summer months, the UV Index gradually cools down, with September maintaining a burn time of 30 minutes, allowing for more relaxed sun exposure. Following the vibrant summer, this moderate index provides a perfect opportunity to enjoy the outdoors while still being mindful of UV exposure. For detailed information on monthly trends, check out the Passendale UV Index.

Maximum UV Index Levels in Passendale for September

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

As autumn gently approaches in Passendale, Belgium, September offers a delightful transition with an impressive 328 hours of sunshine. This month stands out as a time when the lingering warmth of summer still envelops the landscape, following a peak of 425 hours in July. While sunlight gradually wanes in the months to come, September retains a notable abundance compared to the dreary winter, hinting at the vibrant foliage that adorns the countryside. The sunlit days of this month beautifully bridge the gap between the lushness of summer and the contemplative chill of fall, making it a cherished time for both locals and visitors alike.

Monthly Sunshine Duration in Passendale: September Highlighted

The September sunshine duration represents the total number of hours Passendale 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: Passendale September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Passendale During September

In Passendale, Belgium, the chance of sunny weather in September stands at 36%, which is consistent with the summer months of July and August, both hovering around the same likelihood of sunshine. While this marks a slight decline from the more promising April—where sunny days touch 51%—September maintains a relatively favorable outlook compared to the chillier months ahead. As autumn approaches, the sunny probabilities dip further into the fall, suggesting that while September still enjoys a decent share of sunshine, the days ahead will gradually become greyer and more overcast. This trend highlights September as a transitional month, balancing the warmth of summer with the impending coolness of autumn.

Percentage of Sunny Days in September in Passendale

The chart illustrates the percentage of sunny days in Passendale 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 Passendale experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec15%30%40%51%35%33%36%34%36%32%21%16%
Data source: Passendale September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Passendale in September

As autumn approaches in Passendale, Belgium, September brings a gentle transition, with an average daylight duration of 12 hours. This marks a decline from the luminous heights of summer, where June dazzled with up to 16 hours of daylight. The trend in daylight shows a steady increase from the winter months of January, when sunlight is scarce, gradually building through spring. By May, residents enjoy 15 hours of bright skies, only to begin a gradual tapering as fall takes hold. July and August still offer substantial sunlight, but September's 12-hour days signal the onset of shorter, cozier evenings, laying the groundwork for the cooler months ahead.

Average Daylight Hours in Passendale for September

The chart illustrates the variation in daylight duration in Passendale throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 28m10h11h 55m13h 52m15h 34m16h 27m15h 58m14h 27m12h 34m10h 38m8h 54m7h 58m
Data source: Passendale daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Passendale

As summer transitions to autumn, September in Passendale brings a noticeable shift in wind patterns, with average wind speed dipping to 3.3 m/s (7 mph). This decline marks the season's gradual easing, following the more brisk breezes of earlier months. June and July recorded the calmest winds at their lowest, while the start of the year saw more robust gusts, particularly in January and October, both peaking at 4.4 m/s (10 mph). Interestingly, September's gentle currents remind us of the serene pace of fall, hinting at the tranquil months ahead. As the landscape begins to change, so too does the rhythm of the winds, offering a perfect backdrop for the lush, crisp days of early autumn.

Average September Wind Speed in Passendale

The chart displays monthly wind speed patterns in Passendale, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.44.84.44.04.43.03.63.93.3 m/s4.63.74.5
Data source: Passendale September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Passendale Compares to Other Months

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

September and January present distinctly contrasting weather patterns. In September, temperatures range from a pleasant 5°C (42°F) to a warm 31°C (88°F), with an average of 16°C (61°F), making it a typically mild month for outdoor activities. Precipitation measures around 54 mm (2.1 in) over about 10 days, coupled with a humidity level of 82%. In contrast, January brings much cooler conditions, with temperatures dipping from a minimum of -6°C (21°F) to a maximum of 15°C (59°F), averaging just 5°C (41°F). This month experiences slightly higher rainfall, with 64 mm (2.5 in) over 11 days and a humidity level of 91%. For more insights on the winter climate, check Passendale weather in January.

September and February present contrasting weather patterns. In September, temperatures range from a mild 5°C (42°F) to a warm 31°C (88°F), with an average of 16°C (61°F). The month experiences about 54 mm (2.1 in) of precipitation over 10 days, paired with a humidity level of 82%. In contrast, February brings cooler conditions, with temperatures dipping as low as -6°C (21°F) and reaching a maximum of 18°C (65°F), averaging at just 6°C (43°F). This month sees slightly higher precipitation at 59 mm (2.3 in) over 12 days and a humidity of 89%. These differences not only paint a vivid picture of seasonal change but also impact activities and lifestyle choices during each month. For a detailed look at the weather in February, you can check Passendale weather in February.

In comparing the weather of September and March, it's evident that these months present distinct climatic characteristics. September boasts a milder temperature range with a minimum of 5°C (42°F) and a maximum of 31°C (88°F), averaging around 16°C (61°F). In contrast, March is cooler, featuring a minimum of -7°C (20°F) and a maximum of 22°C (72°F), with an average temperature of just 8°C (46°F). Precipitation levels are slightly higher in March, totaling 63 mm (2.5 in) over 14 days compared to September's 54 mm (2.1 in) over 10 days. Humidity also edges higher in March at 87% compared to September's 82%. For more detailed insights, you can check Passendale weather in March.

When comparing the weather in September and April, notable differences can be observed. September tends to be warmer, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 31°C (88°F), while April experiences cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 25°C (78°F). Precipitation is slightly higher in September at 54 mm (2.1 in) over 10 days compared to April's 38 mm (1.5 in) over 8 days. Additionally, while September's humidity averages around 82%, April's humidity is marginally higher at 85%. For those interested in more specific details, check out the Passendale weather in April.

In comparing the weather between September and May, we see that September generally offers warmer temperatures, with a minimum of 5°C (42°F) and an average of 16°C (61°F), while May starts cooler with a minimum of 1°C (35°F) and an average of 13°C (56°F). However, both months experience similar humidity levels at 82%. Precipitation is slightly higher in May, totaling 60 mm (2.4 in) over 12 days compared to September's 54 mm (2.1 in) over 10 days. For detailed insights on May weather, check Passendale weather in May.

In comparing the weather of September and June, both months showcase relatively mild temperatures, but with slight variations. September experiences a minimum temperature of 5°C (42°F) and an average of 16°C (61°F), whereas June has slightly warmer conditions, starting at a minimum of 7°C (44°F) and an average of 17°C (63°F). The maximum temperatures are comparable, with September peaking at 31°C (88°F) and June reaching 32°C (90°F). Rainfall in June is a bit more substantial, totaling 66 mm (2.6 in) across 9 days, compared to September's 54 mm (2.1 in) spread over 10 days. Interestingly, both months share the same humidity level of 82%, contributing to a similar feeling of mugginess. For further information, you can check Passendale weather in June.

When comparing the weather in September to that of July, several key differences emerge. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 31°C (88°F), with an average of 16°C (61°F). This contrasts with July, where the minimum is slightly higher at 9°C (48°F), but the maximum can soar to 39°C (102°F) with an average of 18°C (66°F). Rainfall is somewhat similar in both months, with September seeing 54 mm (2.1 in) over about 10 days and July experiencing 58 mm (2.3 in) over 11 days. Humidity levels are quite comparable as well, with September at 82% and July slightly lower at 80%. For more detailed insights into the specific conditions in July, you can check Passendale weather in July.

In comparing the weather between September and August, we see a notable shift in temperature and precipitation patterns. September experiences cooler temperatures, with a minimum of 5°C (42°F) and an average of 16°C (61°F), compared to August's warmer minimum of 9°C (48°F) and average of 19°C (66°F). While August reaches a maximum of 35°C (96°F), September's peak temperature is significantly lower at 31°C (88°F). Precipitation is also a factor; September sees 54 mm (2.1 inches) falling over 10 days, while August has a higher total of 71 mm (2.8 inches) over 12 days, indicating a wetter month. Humidity is slightly higher in September at 82%, compared to August's 76%. For more information on August weather specifics, you can visit Passendale weather in August.

September and October present a notable transition in weather patterns. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 31°C (88°F), with an average of 16°C (61°F). The month experiences 54 mm (2.1 in) of precipitation over about 10 days, along with a humidity level of 82%. In contrast, October sees cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 25°C (77°F), averaging around 13°C (55°F). This month is wetter, accumulating 85 mm (3.3 in) of rainfall across 14 days, and humidity rises slightly to 89%. For more detailed insights, check Passendale weather in October.

September and November present quite a stark contrast in weather. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 31°C (88°F), with an average of 16°C (61°F), creating a warm and pleasant climate. The month experiences around 54 mm (2.1 in) of precipitation over about 10 days, with humidity levels at a comfortable 82%. In contrast, November sees cooler temperatures with a range from -1°C (31°F) to 19°C (67°F) and an average of just 8°C (47°F). This month also has slightly higher precipitation at 57 mm (2.2 in) spread over 12 days, along with increased humidity at 92%. For a deeper look into November weather specifics, you can check Passendale weather in November.

September and December present a stark contrast in weather conditions. In September, temperatures range from a mild 5°C (42°F) at night to a warm 31°C (88°F) during the day, with an average of 16°C (61°F). The month sees about 54 mm (2.1 in) of precipitation over approximately 10 days, and humidity levels hover around 82%. In contrast, December features much colder temperatures, with minimums dropping to -3°C (27°F) and maximums reaching only 14°C (58°F), averaging just 6°C (43°F). This month experiences heavier rainfall, with 96 mm (3.8 in) spread over 17 days and higher humidity at 92%. For more detailed insights, you can check Passendale weather in December.

Compare Passendale's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Passendale

As September unfolds in Passendale, the weather transitions into a blend of warmth and coolness, distinguishing it from the hotter summer months. With temperatures fluctuating from a pleasant 31°C to a crisp 5°C, it showcases the delightful variability characteristic of early autumn. While average temperatures settle at a mild 16°C, the month experiences fairly consistent precipitation, with rain falling on approximately 10 days. This combined effect results in higher humidity levels of 82%, creating a unique atmosphere that captures the essence of the changing season. For more insights into the weather patterns in Passendale, refer to Passendale Climate.