September Weather in Franeker, Netherlands

Last updated: August 27, 2025

In September, Franeker, Netherlands experiences mild weather that beautifully balances warmth and crispness. With a maximum temperature reaching 24°C (75°F) and an average of 16°C (61°F), the month invites outdoor activities, while cooler nights dip down to a minimum of 11°C (52°F). Rainfall is common, as the area sees about 93 mm (3.7 in) of precipitation over 13 days, contributing to a high humidity level of 83%. This combination of conditions creates a refreshing atmosphere that showcases the enchanting transition into autumn.

September Temperature in Franeker

As summer fades into autumn, September in Franeker, Netherlands, ushers in pleasingly mild temperatures. With minimums around 11°C (52°F) and an average reaching 16°C (61°F), the weather maintains a comfortable warmth, ideal for outdoor activities. The maximum temperature can soar up to 24°C (75°F), reminiscent of late summer days, yet with a gentle shift towards the cooler embrace of fall. This transitional month showcases a delicate balance, as the lingering warmth of summer gives way to the crispness of autumn, inviting residents and visitors alike to enjoy the beautiful scenery and vibrant local life before winter sets in.

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

The chart illustrates September temperature patterns in Franeker, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Franeker, 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).
JanFebMarAprMayJunJulAugSepOctNovDec414043485461646560554743
Data source: Temperature data for Franeker 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 Franeker

In September, Franeker experiences an average precipitation of 93 mm (3.7 inches) over 13 rainy days, marking a notable transition from the wet summer months. This figure aligns well with August’s higher total of 122 mm, though it signifies a shift towards the wetter autumn season ahead. Following the typical late-summer trend, September’s rainfall prepares the landscape for an even greater October average of 106 mm. As the days cool and cloud cover increases, these patterns highlight a steady progression in Franeker’s climate, where summer's lingering warmth gives way to the more unstable weather of fall.

September Precipitation Trends in Franeker

The chart displays monthly precipitation patterns in Franeker, 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 Franeker, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec66666935598087122941066397
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Franeker

September in Franeker, Netherlands, sees a notable shift in humidity as the summer warmth begins to retreat. With humidity levels reaching 83%, September marks a slight increase from the drier summer months of July and August, both sitting at 75%. This resurgence hints at the transition into the wetter autumn season, as moisture content gradually climbs back toward the winter averages. The gradual rise in humidity continues into October, where it peaks at 86%, emphasizing the trend of increasing dampness as the year progresses. Overall, September serves as a gentle reminder of the changing seasons, blending the tail end of summer's dry spell with the onset of fall's wetter weather.

September Average Humidity in Franeker

This chart illustrates the average monthly humidity levels in Franeker, 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 Franeker is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%86%84%80%75%75%75%83%86%87%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Franeker

As the summer months fade into autumn, the UV Index in Franeker, Netherlands reflects a noticeable decline in sun intensity. In September, the index sits at 5, categorized as moderate—a shift from the peak summer values of 7 and 8. This transition signifies a more manageable sun exposure, allowing for a burn time of approximately 30 minutes before protective measures are necessary. Though the countdown to winter begins with October seeing a further dip to 3, September remains a reminder of the sun’s lingering warmth, making it a great time for outdoor activities. For more detailed information on UV levels throughout the year, you can explore the Franeker UV Index.

Maximum UV Index Levels in Franeker for September

The chart shows the monthly maximum UV Index (UVI) for Franeker 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 Franeker typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123578875321
Data source: Franeker 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 Franeker

September in Franeker, Netherlands, basks in 329 hours of sunshine, marking a delightful transition from the sun-drenched summer months of July and August, which boast 420 and 398 hours, respectively. This month continues the trend of abundant light that began in spring, with sunshine hours peaking in May at 413 hours. However, as autumn approaches, daylight begins to wane, foreshadowing the lower totals of October and November. While September enjoys a generous amount of sun, it hints at the cooler, cloudier days to come, encouraging both locals and visitors to relish the tail end of the brighter season.

Monthly Sunshine Duration in Franeker: September Highlighted

The September sunshine duration represents the total number of hours Franeker 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.
JanFebMarAprMayJunJulAugSepOctNovDec108h201h290h359h413h410h420h398h329h245h195h140h
Data source: Franeker September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Franeker During September

In Franeker, Netherlands, the likelihood of sunny weather in September hovers around 32%, positioned comfortably in the middle of the year. This percentage indicates a slight dip from the more promising sunny days seen in April and June, both encountering peaks of 42%. However, September's sunshine chances are still relatively favorable compared to the winter months, which struggle with averages as low as 21%. As the summer winds down, September offers a transitional charm with a fair chance of clear skies, making it an inviting time for outdoor activities before the autumn chill sets in.

Percentage of Sunny Days in September in Franeker

The chart illustrates the percentage of sunny days in Franeker 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 Franeker experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%26%34%43%35%42%36%37%32%28%21%21%
Data source: Franeker September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Franeker in September

In September, Franeker transitions smoothly from the long, sun-drenched days of summer into the cooler embrace of autumn. With 12 hours of daylight, the days are still fairly generous, allowing for ample time to enjoy the outdoors before the daylight hours begin to shrink further. This month marks a noticeable decrease from the 16 hours enjoyed in July and August, reflecting a gradual shift in the seasonal rhythm. As the autumn equinox approaches, the fading sunlight serves as a gentle reminder of the shorter days ahead, nudging the community to savor the last remnants of summer’s warmth while preparing for the cozier months to come.

Average Daylight Hours in Franeker for September

The chart illustrates the variation in daylight duration in Franeker throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 8m9h 50m11h 54m14h 1m15h 53m16h 52m16h 20m14h 39m12h 37m10h 31m8h 37m7h 35m
Data source: Franeker daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Franeker

As the leaves begin to turn and the air cools in Franeker, September brings a gentle breeze, with an average wind speed of 5.2 m/s (12 mph). This marks a notable drop from the summer months, where winds were more lively, averaging around 6.5 m/s in August. Following the shifting currents of the seasons, September's winds are reminiscent of the calm before autumn settles in, gradually building up again to a more robust 7.7 m/s (17 mph) in October. The subtle change in wind speed reflects the transition from the warmth of late summer to the crispness of fall, inviting residents to enjoy the outdoors in a refreshing yet invigorating atmosphere.

Average September Wind Speed in Franeker

The chart displays monthly wind speed patterns in Franeker, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.66.96.76.76.24.95.46.55.2 m/s7.76.36.8
Data source: Franeker September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Franeker Compares to Other Months

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

In September, the weather tends to be milder, with average temperatures ranging from a minimum of 11°C (52°F) to a pleasant maximum of 24°C (75°F), accompanied by relatively high humidity at 83%. The month sees an average of 93 mm (3.7 in) of precipitation over approximately 13 days. In contrast, January brings much colder conditions, with temperatures dipping to a minimum of -2°C (28°F) and only reaching a maximum of 11°C (51°F). While January experiences less total rainfall at 66 mm (2.6 in) over about 14 days, the humidity rises to 88%. For more detailed insights into the weather, you can check Franeker weather in January.

September and February present quite contrasting weather conditions. In September, temperatures range from a minimum of 11°C (52°F) to a comfortable maximum of 24°C (75°F), with an average of 16°C (61°F). The month experiences substantial rainfall with 93 mm (3.7 in) spread across 13 days, all while maintaining a humidity level of 83%. In contrast, February is much colder, with minimum temperatures dropping to -6°C (21°F) and maximums only reaching 11°C (53°F), averaging at 5°C (41°F). Although February sees less precipitation, totaling 66 mm (2.6 in) over the same number of rainy days, the humidity is slightly higher at 88%. For a more detailed look at February weather, you can visit Franeker weather in February.

In comparing the weather between September and March, it's clear that September is significantly warmer, with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 24°C (75°F). In contrast, March experiences cooler conditions, with temperatures averaging between -7°C (19°F) and 15°C (58°F). While both months see a similar number of rainy days, September records higher precipitation at 93 mm (3.7 in) compared to March's 69 mm (2.7 in). Additionally, the humidity levels are slightly higher in March at 86%, compared to September's 83%. For detailed insights into March weather, check Franeker weather in March.

In comparing the weather of September and April, noticeable differences emerge. September tends to be warmer, with average temperatures around 16°C (61°F), while April's average is significantly cooler at 9°C (48°F). The maximum temperature in September can reach up to 24°C (75°F), contrasting with April's maximum of 20°C (67°F). Additionally, September experiences more precipitation, with 93 mm (3.7 in) over 13 days, compared to April's relatively drier conditions with only 35 mm (1.4 in) across 9 days. Interestingly, humidity remains similar in both months, hovering around 83% in September and 84% in April. For a more detailed look at April's weather, you can check out Franeker weather in April.

September generally offers milder temperatures compared to May, with an average of 16°C (61°F) and a maximum of 24°C (75°F) compared to May's average of 12°C (54°F). While both months can reach similar maximum temperatures, September tends to be more humid, averaging 83% humidity versus May's 80%. In terms of rainfall, September also sees higher precipitation levels at 93 mm (3.7 in) over 13 days, compared to May's 59 mm (2.3 in) over 12 days. For those interested in the weather specifics for this time of year, more information can be found at Franeker weather in May.

In comparing the weather of September and June, both months exhibit similar average temperatures, around 16°C (61°F) to 16°C (62°F). However, June tends to be warmer overall, with maximum temperatures reaching up to 29°C (85°F), compared to September's peak of 24°C (75°F). Moreover, while September experiences more days of precipitation (13 days) and a higher total rainfall of 93 mm (3.7 in) at a humidity of 83%, June has slightly fewer rainy days (10 days) and less precipitation at 80 mm (3.1 in), with lower humidity at 75%. For a detailed look at June weather, you can visit Franeker weather in June.

In comparing the weather of September and July, notable differences emerge in both temperature and humidity. July tends to be warmer, with minimum temperatures starting at 13°C (56°F) and maximum highs reaching 29°C (85°F), averaging around 18°C (64°F). In contrast, September sees cooler conditions, with a minimum of 11°C (52°F), an average of 16°C (61°F), and a maximum of 24°C (75°F). Additionally, while July experiences slightly less precipitation at 87 mm (3.4 in) over 13 days, September has a bit more rainfall at 93 mm (3.7 in), maintaining the same number of rainy days. Humidity levels are also higher in September at 83%, compared to July's 75%. For more details on July weather specifics, you can visit Franeker weather in July.

In comparing the weather between August and September, we notice a shift towards cooler and wetter conditions in September. August experienced slightly higher temperatures, with a minimum of 13°C (55°F) and a maximum of 29°C (84°F), while September's temperatures ranged from a minimum of 11°C (52°F) to a maximum of 24°C (75°F). Additionally, September brought more precipitation, totaling 93 mm (3.7 in) over 13 days, compared to August's 122 mm (4.8 in) over 16 days. The humidity also increased in September to 83%, up from 75% in August, making the air feel more saturated. For more detailed insights into August weather, refer to Franeker weather in August.

In September, the weather typically showcases milder temperatures, with a minimum of 11°C (52°F) and an average of 16°C (61°F), reaching a pleasant maximum of 24°C (75°F). However, this month also experiences a fair amount of rainfall, with precipitation recorded on 13 days, totaling 93 mm (3.7 in) and a humidity level of 83%. In contrast, October brings cooler conditions, with temperatures dropping to a minimum of 5°C (42°F) and an average of 13°C (55°F), peaking at a maximum of 20°C (69°F). This month also sees an increase in rainfall, accumulating 106 mm (4.2 in) over 18 rainy days, accompanied by a slightly higher humidity level of 86%. For more details about October weather, you can visit Franeker weather in October.

September presents a milder climate with temperatures ranging from a minimum of 11°C (52°F) to a comfortable maximum of 24°C (75°F) and an average of 16°C (61°F). In contrast, November sees much cooler temperatures, with a minimum of just 2°C (35°F) and a maximum of 16°C (61°F), resulting in an average temperature of 9°C (48°F). While September experiences more precipitation at 93 mm (3.7 in) over 13 days, November has a lighter total of 63 mm (2.5 in) but is notable for having a slightly longer stretch of rainy days, totaling 15. Additionally, humidity rises slightly in November to 87%, compared to 83% in September. For more detailed insights into November weather, you can check Franeker weather in November.

September and December bring distinctly different weather patterns. In September, the average temperature hovers around 16°C (61°F), with pleasant maximums reaching 24°C (75°F). The month experiences a fair amount of rainfall, totaling 93 mm (3.7 in) over approximately 13 days, accompanied by a relatively high humidity level of 83%. In contrast, December sees a significant drop in temperature, averaging just 6°C (43°F) and peaking at a maximum of 11°C (51°F). The precipitation increases slightly to 97 mm (3.8 in) spread over 18 days, with humidity rising to 86%. For more insights into what December entails, you can check out Franeker weather in December.

Compare Franeker's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Franeker

As September arrives in Franeker, it brings a delightful transition from the warm summer months to the cooler autumn days. Temperatures are moderate, with pleasant highs and refreshing lows that encourage outdoor exploration. While the month remains relatively wet, with several days of precipitation, the humidity is notably high, giving September a distinct, crisp air compared to the sweltering summer. This blend of warmth and moisture makes it a unique time to experience Franeker's vibrant landscapes. For further insights into the region's weather patterns, explore Franeker Climate.