September Weather in Westvleteren, Belgium

Last updated: August 21, 2025

September in Westvleteren, Belgium offers a delightful mix of warm and cool temperatures, with a maximum reaching 31°C (87°F) and an average of 16°C (61°F), tapering down to a refreshing minimum of 6°C (42°F). While this month brings a moderate precipitation totaling 52 mm (2.0 in) across 9 days, the humidity remains high at 82%, creating a cozy atmosphere. This transitional period beckons visitors to enjoy the beauty of changing seasons, highlighting both the charm of warm days and the crispness of early autumn nights.

September Temperature in Westvleteren

In September, Westvleteren experiences a notable transition towards cooler autumn weather. With a minimum temperature of 6°C (42°F) and an average of 16°C (61°F), the month presents a comforting shift from the sweltering summer heat, peaking at a maximum of 31°C (87°F). This reflects a gentle decline from the summer's highs, as the landscape begins to don its fall hues. Though September retains some warmth, it signals the impending coolness of October, making it an ideal time for visitors to enjoy the serene beauty of the Belgian countryside. Overall, this month embodies a delightful blend of lingering warmth and the crispness that autumn brings.

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

The chart illustrates September temperature patterns in Westvleteren, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westvleteren, 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).
JanFebMarAprMayJunJulAugSepOctNovDec414346505663656561554744
Data source: Temperature data for Westvleteren 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 Westvleteren

In September, Westvleteren experiences a relatively mild precipitation of 52 mm (2.0 in), marking a slight decrease compared to the previous month. This reduction is reflected in the number of rainy days, with September averaging just 9 days of rainfall, fewer than the 12 days noted in August. This transition indicates the beginning of the dry spell as the region shifts towards autumn. Interestingly, while the amount of precipitation dips in September, it sets the stage for the wetter months ahead, as October typically sees an uptick with an average of 82 mm (3.2 in) over 14 days. The gradual decline in rainfall during late summer showcases Westvleteren's climatic variability and hints at the impending cozy embrace of the fall season.

September Precipitation Trends in Westvleteren

The chart displays monthly precipitation patterns in Westvleteren, 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 Westvleteren, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec625760366167557052825694
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Westvleteren

In September, Westvleteren experiences a slight uptick in humidity, reaching 82% after a summer dip. This figure is a notable increase from August’s 76%, signaling the transition into fall when the air begins to retain more moisture. Overall, the trend reflects a gradual rise in humidity throughout the year, with the peak months being November and December, each soaring to a remarkable 92%. As September bridges the gap between summer's drier days and the wetter months ahead, residents can expect a comfortable yet refreshing atmosphere, perfect for enjoying the vibrant autumn landscape.

September Average Humidity in Westvleteren

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

As September rolls in Westvleteren, Belgium, the UV Index settles at a moderate 5, allowing for enjoyable outdoor activities without too much sun worry. With a burn time of 30 minutes, it's essential to be mindful of sun exposure, especially as the index signals a shift from the high summer levels of 7 and 8 seen in July and August. This gradual decrease highlights a transition toward the cooler months, where outdoor enthusiasts can still bask in pleasant weather while remaining cautious. As the year progresses, the UV Index tends to lower, reminding us that while the sun’s intensity wanes, protective measures should remain a priority. For more detailed information, visit Westvleteren UV Index.

Maximum UV Index Levels in Westvleteren for September

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

September in Westvleteren, Belgium, tends to be a month of mellow warmth, with an impressive 328 hours of sunshine that provide a picturesque backdrop to the fading summer days. Following a peak in July, which boasted 425 hours, the sunshine gradually diminishes, yet September still offers a generous amount compared to the colder months ahead. This subtle decline is part of a larger trend where daylight steadily wanes from the vibrant summer months into the more subdued autumnal scenery. As the year transitions, September serves as a perfect bridge, inviting both locals and visitors to savor the remaining rays of sun before the shorter days of October set in.

Monthly Sunshine Duration in Westvleteren: September Highlighted

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

Chance of Sun in Westvleteren During September

In September, Westvleteren, Belgium, welcomes the onset of autumn with a 37% chance of sunny weather, marking a slight uptick from the summer months. This trend reflects a gradual decline in sunlight as the year progresses; however, September manages to maintain a balance of pleasant days, setting it apart from the dreary skies typical of the winter months ahead. Compared to the previous months, the likelihood of sunny weather in September is comparable to August and slightly better than the often cloudy October. As the days gradually shorten, residents and visitors alike can still savor the warmth of early fall, making it an ideal time for outdoor activities amidst the changing foliage.

Percentage of Sunny Days in September in Westvleteren

The chart illustrates the percentage of sunny days in Westvleteren 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 Westvleteren experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec15%30%39%51%36%33%36%34%37%32%21%16%
Data source: Westvleteren September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Westvleteren in September

As the summer sun begins to wane, September in Westvleteren offers a gentle transition with approximately 12 hours of daylight. This month marks a noticeable shift from the longer days of summer, as daylight decreases from 16 hours in June to 12 hours this month. Following August’s 14 hours, September’s light still provides ample opportunity to savor the beauty of early autumn. As daylight diminishes further into the cooler months, with 10 hours in October and only 8 hours in November and December, September serves as a bittersweet reminder of the warmth and brightness of summer. The gradual decline not only sets the stage for fall’s splendor but also invites cozy evenings indoors as the days grow shorter.

Average Daylight Hours in Westvleteren for September

The chart illustrates the variation in daylight duration in Westvleteren throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 29m10h 1m11h 55m13h 51m15h 33m16h 25m15h 57m14h 26m12h 34m10h 38m8h 55m8h
Data source: Westvleteren daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Westvleteren

As September arrives in Westvleteren, Belgium, the winds transition to their gentler rhythm, with an average speed of just 3.3 m/s (7 mph). This decline from the summer breezes marks a noticeable shift, as the earlier months of the year saw more vigorous winds, particularly January through May, where averages hovered around 4.4 m/s (10 mph). The drop aligns with the gradual cooling of the season, contributing to a tranquil atmosphere that's perfect for those seeking to savor the serene beauty of Belgium's countryside. Interestingly, while winds are softer in September, they pick up again come October, promising a refreshing return as autumn settles in, capturing the essence of the region's climate.

Average September Wind Speed in Westvleteren

The chart displays monthly wind speed patterns in Westvleteren, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.44.84.54.14.43.13.74.03.3 m/s4.63.84.5
Data source: Westvleteren September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Westvleteren Compares to Other Months

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

September's weather is characterized by a warm range of temperatures, with daily averages around 16°C (61°F) and highs reaching up to 31°C (87°F). Humidity levels are relatively high at 82%, and while there is some precipitation, it averages 52 mm over about 9 days. In contrast, January brings much colder temperatures, with an average of 5°C (41°F) and highs only reaching 15°C (59°F). The humidity increases to 91%, and the month experiences slightly more rainfall, totaling 62 mm over 12 days. For a closer look at January weather, check out Westvleteren weather in January. Overall, September offers a more temperate and drier climate compared to the chilly and wetter conditions of January.

In September, the weather is generally warmer, with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 31°C (87°F) and an average of 16°C (61°F). In contrast, February is much cooler, featuring average temperatures around 6°C (43°F) and a maximum of 18°C (65°F), with lows dropping to -6°C (21°F). Both months experience notable precipitation—September sees 52 mm (2.0 in) over about 9 days, while February has slightly more at 57 mm (2.2 in) across approximately 12 days. Additionally, February has higher humidity levels at 89%, compared to September's 82%, making it feel more damp during the winter. For more details about February weather conditions, check out Westvleteren weather in February.

In comparing September and March weather, there are notable differences in temperature and precipitation patterns. September boasts a wider temperature range, with minimums around 6°C (42°F) and maximums reaching up to 31°C (87°F), averaging a comfortable 16°C (61°F). In contrast, March experiences cooler temperatures, with a minimum of -7°C (20°F) and a maximum of 22°C (72°F), averaging only 8°C (46°F). While both months see considerable humidity, March has slightly higher humidity levels at 87% compared to September's 82%. Additionally, March records more precipitation days (13) and slightly more overall rainfall (60 mm) than September, which has 9 rainy days and 52 mm of precipitation. For more details on March weather specifics, you can refer to Westvleteren weather in March.

When comparing the weather in September and April, September emerges as a warmer month with average temperatures ranging from a minimum of 6°C (42°F) to a maximum of 31°C (87°F), while April experiences cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 26°C (78°F). Despite both months having a similar number of rainy days (9), September receives more precipitation overall, totaling 52 mm (2.0 in) compared to April's 36 mm (1.4 in). Humidity levels are quite comparable, with September at 82% and April slightly higher at 85%. For more detailed insights, you can check out Westvleteren weather in April.

When comparing the weather in September and May, September features a broader temperature range with a minimum of 6°C (42°F) and a maximum of 31°C (87°F), resulting in an average temperature of 16°C (61°F). In contrast, May has slightly cooler temperatures, ranging from a minimum of 2°C (36°F) to a maximum of 28°C (82°F), and an average of 13°C (56°F). Although May experiences more precipitation overall, with 61 mm (2.4 in) falling over 11 days, September has a slightly lower total of 52 mm (2.0 in) across 9 days. Interestingly, both months share the same humidity level of 82%, which adds to the cool and crisp feel of the atmosphere. For a closer look at May weather specifics, check out Westvleteren weather in May.

In comparing the weather between September and June, both months present mild temperatures and high humidity levels of 82%. September typically experiences slightly lower temperatures, with a minimum of 6°C (42°F) and an average of 16°C (61°F), while June begins with a minimum of 7°C (45°F) and an average of 17°C (63°F). June can reach a maximum of 32°C (90°F), a notch higher than September's maximum of 31°C (87°F). Precipitation in June is also notably higher at 67 mm (2.6 in) over 10 days, compared to September's 52 mm (2.0 in) spread across 9 days. For more specific insights into June weather, you can visit Westvleteren weather in June.

September and July exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 6°C (42°F) to a maximum of 31°C (87°F), with an average of 16°C (61°F). The month sees about 52 mm (2.0 in) of precipitation over 9 days, accompanied by a humidity level of 82%. In contrast, July experiences higher temperatures, with minimums around 10°C (50°F) and maximums soaring to 39°C (102°F), yielding an average of 19°C (66°F). July also has slightly more precipitation at 55 mm (2.1 in) over 11 days, but the humidity remains lower at 80%. For a more detailed look at July's weather, you can check Westvleteren weather in July.

In comparing the weather between August and September, September generally exhibits cooler temperatures, with a minimum of 6°C (42°F) compared to August's minimum of 9°C (49°F). The average temperature in September is 16°C (61°F), while August maintains a warmer average of 19°C (66°F). August also sees higher maximum temperatures, reaching up to 35°C (96°F), in contrast to September's peak of 31°C (87°F). Precipitation is slightly more in August, with 70 mm (2.8 in) over 12 days, compared to September's 52 mm (2.0 in) over 9 days, although September's humidity is slightly higher at 82%, versus 76% in August. For more details, you can find additional information about Westvleteren weather in August.

September experiences warmer temperatures compared to October, with averages reaching 16°C (61°F) and highs of 31°C (87°F), while October sees a drop in average temperatures to 13°C (55°F) and a maximum of 25°C (77°F). Additionally, October is characterized by increased precipitation, with 82 mm (3.2 in) falling over 14 days, compared to September's 52 mm (2.0 in) over 9 days. Humidity also rises slightly in October to 89%, compared to 82% in September, contributing to a more damp atmosphere. For a closer look at the weather specifics in October, visit Westvleteren weather in October.

September and November showcase distinct differences in weather patterns. In September, temperatures range from a mild minimum of 6°C (42°F) to a warm maximum of 31°C (87°F), with an average of 16°C (61°F). This month experiences relatively lower precipitation at 52 mm (2.0 in) over 9 days, accompanied by humidity at 82%. In contrast, November brings cooler temperatures, with a minimum of 0°C (31°F) and a maximum of 19°C (66°F), resulting in a chilly average of 8°C (47°F). Precipitation slightly increases to 56 mm (2.2 in) over 11 days, with humidity reaching a higher level of 92%. For a more detailed look at the weather during this time, you can check Westvleteren weather in November.

In September, temperatures range from a cool 6°C (42°F) at night to a warm 31°C (87°F) during the day, providing an average of 16°C (61°F). The month receives about 52 mm (2.0 in) of precipitation over 9 days, and humidity levels hover around 82%. In contrast, December brings a significant drop in temperatures, with minimums plummeting to -3°C (27°F) and maximums only reaching 14°C (58°F), averaging at 6°C (44°F). The month is wetter, with 94 mm (3.7 in) of rain spread over 17 days and a higher humidity of 92%. For more detailed insights, you can check Westvleteren weather in December.

Compare Westvleteren's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Westvleteren

As September rolls in, Westvleteren bids farewell to the summer warmth while welcoming the cool embrace of autumn. You'll notice the temperatures begin to fluctuate more, with pleasant days giving way to crisp evenings. This month stands out with a notably higher humidity level, creating a cozy atmosphere that invites occasional rain—September typically sees more days of precipitation compared to the drier summer months. For those looking to explore, understanding how this unique weather pattern shapes the landscape can enhance your experience. Discover more about the region's climate in detail at Westvleteren Climate.