Last updated: April 1, 2025
In September, Český Krumlov experiences a blend of mild warmth and refreshing coolness, with maximum temperatures reaching 28°C (82°F) and an average of 13°C (56°F). However, as autumn approaches, the nights can be brisk, dipping to a minimum of -1°C (31°F). Visitors can expect 81 mm (3.2 in) of precipitation over about 12 days, contributing to the region's lush landscapes. With an average humidity of 82%, the enchanting town takes on a magical quality as it transitions into fall, making it a captivating time for exploration.
In September, Cesky Krumlov transitions into a crisp autumn, with temperatures starting to dip from the warmth of summer. The average temperature hovers around 13°C (56°F), while daytime highs can still reach a comfortable 28°C (82°F), offering a pleasant ambiance for exploring the town's picturesque streets. Nighttime brings cooler air, with minimum temperatures falling to around -1°C (31°F). This shift heralds the arrival of vibrant fall foliage, making September an ideal time to experience the enchanting beauty of this historic Czech town while enjoying mild weather before the chill of winter sets in.
September brings a notable transition in Cesky Krumlov, with an average precipitation of 81 mm (3.2 in), spread over 12 days. This marks a slight increase from the drier summer months of July and August, where precipitation peaked at 109 mm and 114 mm, respectively. However, September's rainfall is still significantly lower than the lush downpours of May and June, which recorded over 120 mm each. As the crisp fall air begins to settle in, the city's charming landscapes benefit from this moderate rainfall, ensuring vibrant autumn colors without overwhelming the serene ambiance that Cesky Krumlov is adored for. This blend of seasonal change and consistent moisture sets the stage for picturesque autumn days in this enchanting town.
In September, Cesky Krumlov experiences a comfortable humidity level of 82%, maintaining the trend seen in the preceding summer months. As the summer warmth begins to wane, this level is consistent with the humidity recorded in both July and August, providing a pleasant atmosphere for visitors exploring the charming streets of this historic town. As the year transitions into autumn, the humidity starts to rise again in October, hinting at the cooler months ahead. Overall, September’s humidity reflects a gradual easing from the higher summer levels, creating an inviting climate for those looking to enjoy the beautiful scenery before the onset of fall.
In September, Cesky Krumlov welcomes the transition into autumn with a UV Index of 6, indicating a high exposure category. This marks a slight decline from the peak summer months of July and August, where the UV Index reached 9, and suggests a more manageable sun exposure duration of 25 minutes before risk of burning increases. As summer fades, UV levels become less intense, yet it's still essential for visitors to be mindful of sun safety as they explore the charming streets and historical sites. For more detailed information on UV levels throughout the year, visit Cesky Krumlov UV Index.
UV Risk Categories
As September unfolds in Český Krumlov, the city enjoys a generous 305 hours of sunshine, a delightful continuation of the summer's warmth. This month marks a slight dip from the radiant peak of July, which boasts an impressive 426 hours, yet it remains significantly sunnier than the chillier months that follow. With the late summer sun casting a golden glow over the historic architecture and the Vltava River, visitors can relish the beautiful transitions of the season. While daylight begins to wane as October approaches with its 269 hours, September offers a vibrant backdrop of sunshine, ideal for exploring the enchanting sights of this picturesque town.
September marks a turning point in Cesky Krumlov's weather, boasting a notable 46% chance of sunny days. This increase hints at a late summer revival, contrasting with the lower percentages earlier in the year. After a gradual rise from March’s 44% to the summer months, where sunshine chances hover between 27% and 36%, September emerges as the month with one of the highest probabilities for clear skies. As autumn approaches, it's an inviting time for visitors to enjoy the vibrant hues of the landscape bathed in sunlight, making it an ideal backdrop for exploring this picturesque town.
As September arrives in Český Krumlov, daylight begins to taper off from the summer's peak, offering a gentle transition into autumn. With approximately 12 hours of daylight, the days are still pleasantly long, allowing plenty of time to explore the town's stunning architecture and picturesque scenery. Following the vibrant months of June and July, where daylight stretched to 16 and 15 hours, September signals a shift, with the hours gradually decreasing towards the shorter days of fall. This gradual decline from summer's abundance gives a sense of balance, inviting visitors to savor the lingering warmth of the season while foreseeing the cozy, shorter days ahead.
As September arrives in Český Krumlov, the whisper of the wind begins to soften, with an average speed of 2.0 m/s (5 mph). This gentle breeze signals the transition from the warmth of summer into the cooler embrace of autumn. Following the bustling energy of spring and the mild gusts of summer, the winds taper off slightly, reflecting a calming shift in the atmosphere. This gradual decline in wind speed from the more robust averages in May and June creates an inviting environment, perfect for leisurely strolls along the winding streets and by the picturesque Vltava River. As the vibrant fall foliage begins to emerge, the serene September winds offer a tranquil backdrop to the enchanting beauty of Český Krumlov.
The weather in Cesky Krumlov changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Cesky Krumlov and find detailed weather information for every month.
September and January in Cesky Krumlov showcase a stark contrast in weather. September features a mild average temperature of 13°C (56°F), with highs reaching up to 28°C (82°F), while January sees much colder conditions with an average temperature of -2°C (29°F) and maximums only hitting 10°C (51°F). Precipitation is slightly higher in September at 81 mm (3.2 in) over 12 days compared to January's 58 mm (2.3 in) spread across 11 days, yet January’s higher humidity at 91% creates a colder, more biting chill. For a closer look at January's weather in Cesky Krumlov, visit Cesky Krumlov weather in January.
September and February present starkly contrasting weather conditions. In September, temperatures range from a chilly minimum of -1°C (31°F) to a warm average of 13°C (56°F), peaking at a pleasant 28°C (82°F), coupled with moderate humidity at 82%. The month experiences around 81 mm of precipitation over 12 days. On the other hand, February is characterized by significantly colder temperatures, with a minimum of -19°C (-3°F), an average of 0°C (33°F), and a maximum that only reaches 15°C (60°F). Despite this cold, February sees less precipitation overall at 49 mm, though it's still distributed across 11 days, with even higher humidity levels at 89%. For more details on the weather patterns specific to this month, check out Cesky Krumlov weather in February.
September and March display contrasting weather characteristics. In September, temperatures range from a minimum of -1°C (31°F) to a max of 28°C (82°F), with an average of 13°C (56°F) and 81 mm (3.2 in) of precipitation over 12 days. The humidity during this month is relatively high at 82%. In contrast, March experiences colder conditions, with temperatures dropping to a minimum of -20°C (-4°F) and reaching a maximum of 19°C (67°F), averaging around 3°C (38°F). Despite receiving less precipitation at 57 mm (2.2 in) over the same number of days, the humidity is slightly higher at 87%. This stark difference underscores the transition from the warmth of early autumn to the lingering chill of late winter. For more details, check out Cesky Krumlov weather in March.
When comparing the weather in September and April, notable differences emerge in temperature and precipitation patterns. September boasts a broader temperature range, with minimums averaging around -1°C (31°F), climbing to a pleasant average of 13°C (56°F) and reaching maximums of 28°C (82°F). In contrast, April tends to be chillier, starting with minimums of -10°C (14°F) and averaging around 8°C (46°F), though it can still reach highs of 25°C (78°F). Precipitation is also more frequent in September, with 81 mm (3.2 in) over 12 days, compared to April's 47 mm (1.8 in) over 9 days. Interestingly, both months share similar humidity levels at 82%. For more detailed information, check out Cesky Krumlov weather in April.
September and May present a fascinating contrast in weather characteristics. In September, temperatures range from a chilly minimum of -1°C (31°F) to a warm maximum of 28°C (82°F), with an average of 13°C (56°F). The month experiences about 81 mm (3.2 in) of precipitation over 12 days and high humidity levels at 82%. In contrast, May has a slightly cooler minimum temperature of -2°C (29°F), but it reaches a higher maximum of 29°C (84°F) and carries an average temperature of 12°C (53°F). Additionally, May sees more rainfall, totaling 117 mm (4.6 in) over 18 days, with a lower humidity level of 76%. For a closer look at the specifics of May weather in Cesky Krumlov, check out Cesky Krumlov weather in May.
In comparing the weather of September and June, there's a notable contrast in temperature and precipitation patterns. September features a broader range of temperatures, with minimums dipping to -1°C (31°F) and maximums reaching up to 28°C (82°F), allowing for a pleasant average of 13°C (56°F). The month sees significant precipitation at 81 mm (3.2 in) over 12 days, accompanied by a high humidity level of 82%. In contrast, June tends to be warmer with minimums around 3°C (38°F) and a higher average of 17°C (63°F), while the maximum can rise to 32°C (90°F). However, June experiences more rainfall, totaling 120 mm (4.7 in) over 14 days and slightly lower humidity at 80%. For a more detailed look at June weather trends, check out Cesky Krumlov weather in June.
In comparing the weather between September and July, notable differences emerge in temperature and precipitation patterns. September experiences a more variable temperature range, with minimums dropping to -1°C (31°F) and maximums reaching 28°C (82°F), resulting in an average temperature of 13°C (56°F). In contrast, July boasts warmer temperatures, with a minimum of 6°C (42°F), an average of 18°C (64°F), and a maximum of 32°C (90°F). While September has slightly lower total rainfall at 81 mm (3.2 in) over 12 days, July sees more precipitation with 109 mm (4.3 in) over 15 days. Humidity levels are fairly similar, with September at 82% and July at 80%. For those interested in the specifics of July weather, detailed information is available at Cesky Krumlov weather in July.
In comparing the weather between September and August, September boasts cooler temperatures, with a minimum of -1°C (31°F) and an average of 13°C (56°F), in stark contrast to August's milder minimum of 6°C (44°F) and an average of 18°C (65°F). While September reaches a maximum of 28°C (82°F), August can peak at a hotter 33°C (92°F). Precipitation is also notable, with September receiving 81 mm (3.2 in) over 12 days, compared to August's higher 114 mm (4.5 in) across 14 days. Interestingly, both months share the same humidity level of 82%. For a more detailed look at August weather, you can check Cesky Krumlov weather in August.
September generally offers warmer temperatures compared to October, with average highs reaching 28°C (82°F) and lows around -1°C (31°F). In contrast, October sees a decline in warmth, averaging a maximum of 21°C (70°F) and a minimum of -3°C (28°F). Additionally, October experiences slightly lower precipitation at 59 mm (2.3 in) compared to September's 81 mm (3.2 in), though both months have rain on about 12 days. Humidity also increases in October, peaking at 87% compared to September's 82%. For more detailed insights, check out Cesky Krumlov weather in October.
In comparing the weather patterns of September and November, it's evident that November brings cooler temperatures with a notable drop in the average, from 13°C in September to just 3°C. While September can experience highs up to 28°C, November's maximum temperature peaks at 17°C. Precipitation is slightly less in November, totaling 50 mm over 9 days compared to September's 81 mm over 12 days. Humidity also increases in November, rising to 89% from September's 82%. If you're curious about the specifics of November weather in Cesky Krumlov, you can check out more details at Cesky Krumlov weather in November.
September and December present contrasting weather conditions. In September, temperatures range from a minimum of -1°C (31°F) to a maximum of 28°C (82°F), with an average of 13°C (56°F). The month experiences about 81 mm (3.2 in) of precipitation over 12 days, accompanied by a relative humidity of 82%. In contrast, December brings much colder weather, with temperatures dipping to a minimum of -13°C (10°F), averaging 0°C (33°F) and peaking at 12°C (54°F). Precipitation decreases slightly to 71 mm (2.8 in), spread over 15 days, and humidity rises to 92%. For more detailed information, you can check Cesky Krumlov weather in December.
As September unfolds in Cesky Krumlov, the weather begins to transition from the warmth of summer to the cooler embrace of autumn. Temperatures, while still peaking at a pleasant 28°C (82°F), average around a crisp 13°C (56°F), showcasing the end of the warm season. This month also brings a noticeable increase in humidity and precipitation, with about 12 rainy days contributing to the overall 81 mm (3.2 in) of rainfall. Compared to the balmy summer months, September offers a refreshing change, inviting visitors to enjoy the town's vibrant hues as leaves start to change. To learn more about the full climate profile throughout the year, explore Cesky Krumlov Climate.