Last updated: October 30, 2025
September in Kalundborg, Denmark offers a blend of mild temperatures and notable precipitation, perfect for experiencing the transition from summer to autumn. With a maximum temperature reaching 23°C (73°F) and an average of 15°C (60°F), the early days can feel quite warm, while average lows of 11°C (52°F) remind visitors of the season's change. Expect a landscape refreshed by approximately 88 mm (3.5 in) of rain over 14 days, contributing to the region's lush greenery. Coupled with a humidity level of 83%, the air carries a crisp freshness, making September a unique time to explore Kalundborg’s natural beauty and cultural heritage.
As September rolls into Kalundborg, Denmark, the temperatures begin to shift, signaling the transition into autumn. With a minimum temperature of 11°C (52°F) and an average of 15°C (60°F), the month offers mild conditions that invite outdoor explorations. The maximum reaches a comfortable 23°C (73°F), making it one of the more pleasant months of the year. This gradual descent from summer warmth is evident as prior months see higher averages; nevertheless, September retains a lovely balance, presenting an ideal atmosphere for enjoying the picturesque landscapes of this charming coastal town. The softening air and cooling breezes mark the onset of fall, offering a gentle reminder that winter is just around the corner.
In September, Kalundborg experiences a notable increase in precipitation, averaging 88 mm (3.5 in) over approximately 14 days. This rainy month marks a continuation of the wet pattern established in August, which recorded the highest rainfall of the year at 97 mm (3.8 in). As autumn sets in, the frequency of rainy days climbs, paving the way for a significant switch to the wetter months ahead. Interestingly, this transition foreshadows October's even heftier 107 mm (4.2 in), suggesting that as summer fades, Kalundborg prepares for a season characterized by increased precipitation and shifting weather patterns.
In September, Kalundborg experiences a notable shift in humidity, with levels rising to 83% after a steady 77% during the summer months of July and August. This increase hints at the transition into fall, where the air begins to moisten and cozy conditions set in. Interestingly, September's humidity is higher than August's but remains significantly lower than the winter months, which consist of consistently high levels around 90%. As the year progresses, Kalundborg oscillates between these extremes, showcasing the region's characteristic maritime climate that keeps residents enveloped in a rich, yet variable, atmosphere.
As September rolls into Kalundborg, Denmark, residents and visitors can expect a moderate UV Index of 5, offering a brief respite from the high levels encountered during the summer months. This drop from August's high of 6 signifies a shift towards milder sun exposure, with a recommended burn time of 30 minutes. While outdoor activities can still be enjoyed, it’s important to stay mindful of the sun, especially as we transition into autumn. Overall, the UV Index trends from the year highlight a gradual decrease in sunlight intensity, encouraging a balanced approach to sun protection as daylight diminishes. For more detailed insights, check out the Kalundborg UV Index.
UV Risk Categories
September in Kalundborg, Denmark, ushers in a transitional phase marked by 317 hours of sunshine, a gentle tapering from the summer's radiant peak. Following the intense brightness of July and August, which basked in 446 and 404 hours respectively, September offers a more subdued yet delightful experience. The sun still makes its presence felt, outshining October's 247 hours, reminding residents of the vibrant summer days just passed. As the year progresses, one can observe a distinct decline in sunlight, with the cozy embrace of autumn beginning to take hold. This shifting rhythm of light paints a picturesque scene, inviting locals and visitors alike to relish the beauty of early fall in this charming coastal town.
As September rolls into Kalundborg, Denmark, the likelihood of sunny weather sits at 33%, showing a moderate chance of sunshine compared to earlier in the summer months. This percentage reflects a slight dip from the more promising days of August (43%) and hints at the changing seasons as autumn approaches. Notably, the chance of sun has gradually shifted from the bright days of April (57%) and March (42%), accentuating how the earlier months offer a more favorable climate. While September may not guarantee abundant sunshine, it still presents a reasonable opportunity for clear skies, reminiscent of the lingering warmth of summer.
As September unfolds in Kalundborg, Denmark, the daylight hours begin to wane, offering 12 hours of sunlight—a gentle decline from the bright 16 hours experienced in May and June. This shift marks the transition into the cozy embrace of autumn, where the long summer days gradually give way to the shorter, more introspective days of October, which brings just 10 hours of daylight. The variations throughout the year showcase a beautiful rhythm; after basking in the summer's generous light, September provides a balanced blend of day and night, setting the stage for the harvest season and inviting residents to appreciate the changing scenery as nature prepares for the chillier months ahead.
As September rolls into Kalundborg, Denmark, the average wind speed settles at a refreshing 5.8 m/s (13 mph), showcasing a gentle yet invigorating breeze that perfectly complements the transition from summer to autumn. This marks a slight dip from August's more robust winds of 6.8 m/s (15 mph) but is not uncommon as the year begins to cool. While September's winds invite leisurely strolls along the coastline, they precede the anticipated gusts of October, which roar back to 7.9 m/s (18 mph). Observing these trends reveals a rhythmic dance of wind patterns, with summer offering gentleness before autumn asserts itself with a more vigorous presence.
Weather in Kalundborg varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kalundborg, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather experiences. In September, temperatures are mild, ranging from a minimum of 11°C (52°F) to a maximum of 23°C (73°F), with an average of 15°C (60°F). This month sees about 88 mm (3.5 in) of precipitation over 14 days, and humidity levels are relatively high at 83%. In stark contrast, January features much colder conditions, with temperatures plummeting to a minimum of -4°C (25°F) and a maximum of only 10°C (50°F), averaging around 4°C (39°F). Precipitation decreases to 62 mm (2.4 in) over 12 days, while humidity rises slightly to 90%. For a more detailed look at January weather, visit Kalundborg weather in January.
September and February showcase striking contrasts in weather. In September, temperatures range from a mild 11°C (52°F) at night to a warm 23°C (73°F) during the day, while February experiences much cooler conditions, with lows plunging to -6°C (21°F) and daytime highs only reaching 10°C (51°F). While September brings some rainfall, totaling 88 mm (3.5 in) over 14 days, February sees less precipitation at 54 mm (2.1 in) over 11 days. Additionally, humidity levels are high in both months, peaking at 83% in September and slightly higher at 89% in February. For more detailed insights about February weather, you can visit Kalundborg weather in February.
When comparing the weather in September and March, it's evident that September enjoys milder temperatures, with daily averages around 15°C (60°F) and highs reaching up to 23°C (73°F). In contrast, March is much cooler, with average temperatures dropping to 4°C (40°F) and maximums peaking at 10°C (51°F). Additionally, September experiences more significant rainfall, totaling 88 mm (3.5 in) over 14 days, while March sees less precipitation at 58 mm (2.3 in) over 10 days. Humidity levels are slightly higher in March at 88%, compared to September's 83%. For more details on March weather, you can visit Kalundborg weather in March.
September weather is generally milder and more pleasant than April, with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 23°C (73°F). In contrast, April tends to be cooler with temperatures spanning from 0°C (32°F) to 14°C (57°F). Additionally, September experiences nearly three times the precipitation of April, accumulating 88 mm (3.5 in) over about 14 days, compared to April's 32 mm (1.3 in) over just 7 days. Despite the slightly higher humidity in September at 83%, April's humidity remains close at 85%. For more detailed information, you can explore Kalundborg weather in April.
September and May exhibit distinct weather patterns, with September generally being warmer and more humid. In September, average temperatures range from a low of 11°C (52°F) to a high of 23°C (73°F), while May sees cooler averages with temperatures from 4°C (40°F) to 21°C (70°F). Additionally, September experiences more precipitation at 88 mm (3.5 in) over 14 days, compared to May's 59 mm (2.3 in) over 11 days. The humidity in September is slightly higher at 83%, compared to 80% in May. For more detailed insights on May weather, you can explore Kalundborg weather in May.
In comparing the weather between September and June, we see some notable differences. September typically has a slightly wider temperature range with minimums around 11°C (52°F) and maximums reaching 23°C (73°F), while June has a minimum of 10°C (51°F) and a maximum of 22°C (73°F). Precipitation is more frequent in September, averaging 88 mm (3.5 in) over 14 days, compared to June's 52 mm (2.0 in) over just 9 days. Additionally, September tends to be more humid, with an average humidity level of 83%, compared to June's 77%. For more details, you can check Kalundborg weather in June.
In comparing the weather of September and July, September tends to be cooler with average temperatures ranging from 11°C (52°F) to a maximum of 23°C (73°F), while July enjoys slightly warmer temperatures, averaging from 13°C (55°F) to a maximum of 25°C (78°F). Additionally, September experiences slightly more precipitation, with 88 mm (3.5 in) over 14 days, compared to July's 74 mm (2.9 in) over 13 days. Humidity levels are also higher in September at 83%, compared to July's 77%. For a detailed look at weather conditions during July, you can visit Kalundborg weather in July.
In comparing the weather between September and August, September tends to be slightly cooler with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 23°C (73°F). In contrast, August has a warmer average temperature, with a range of 14°C (57°F) to 26°C (80°F). Additionally, September experiences more humidity at 83% compared to August's 77%. Precipitation levels are relatively similar, with September receiving 88 mm (3.5 in) across 14 days and August slightly higher at 97 mm (3.8 in) over 13 days. For more detailed information, you can check Kalundborg weather in August.
In comparing the weather of September and October, September tends to be warmer with an average temperature of 15°C (60°F) and maximum highs reaching 23°C (73°F). It also experiences less precipitation, totaling 88 mm (3.5 in) over 14 days, and maintains a slightly lower humidity level of 83%. In contrast, October brings cooler temperatures, with an average of 12°C (54°F) and highs around 17°C (64°F). This month also sees increased precipitation at 107 mm (4.2 in) across 17 days, along with a slight rise in humidity to 87%. For more detailed insights, you can check out Kalundborg weather in October.
September typically offers milder temperatures, with averages around 15°C (60°F) and maximums reaching 23°C (73°F). In contrast, November sees a significant drop in temperature, with averages plummeting to around 8°C (47°F) and maximums only reaching 16°C (60°F). Precipitation is more frequent in September, with around 88 mm (3.5 in) over 14 days compared to November’s 64 mm (2.5 in) spread over 15 days. Additionally, November experiences slightly higher humidity levels at 89%, compared to September's 83%. For a closer look at November weather, click here: Kalundborg weather in November.
In September, the weather is generally mild with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 23°C (73°F), averaging around 15°C (60°F). The month experiences considerable rainfall, with 88 mm (3.5 in) of precipitation spread over 14 days, and humidity levels at a comfortable 83%. In contrast, December brings much colder conditions, featuring temperatures that dip to a minimum of -1°C (30°F) and peak at just 10°C (50°F), averaging around 5°C (41°F). Although precipitation is lower at 73 mm (2.9 in), it still occurs over the same number of days, leading to a slightly higher humidity of 88%. For more detailed insights, you can check out Kalundborg weather in December.
As September unfolds in Kalundborg, the weather takes on a more mellow character, transitioning from the heat of summer to the crispness of autumn. With average temperatures hovering around a comfortable 15°C (60°F), it offers a pleasant respite from the warmer months, while occasional rain showers, experienced on nearly half the days of the month, contribute to a relatively humid atmosphere at 83%. This shift not only enriches the local landscape but also invites residents and visitors alike to embrace the beauty of the changing season. For a deeper insight into what you can expect from the climate throughout the year, be sure to check out Kalundborg Climate.