Last updated: August 21, 2025
In Keszthely, Hungary, September embraces the transition from the warmth of summer to the cool embrace of autumn. The month boasts a maximum temperature of 33°C (91°F) and an average temperature of 17°C (64°F), allowing for pleasant outdoor activities. However, nights can dip to a minimum of 4°C (40°F), reminding us of the changing seasons. With 77 mm (3.0 in) of precipitation over 8 days, the air remains refreshingly humid at 65%, contributing to the lush landscapes that define this charming region. Whether you're exploring the vibrant local culture or enjoying the serene beauty of Lake Balaton, September in Keszthely offers a unique and captivating experience.
In September, Keszthely experiences a delightful transition as summer begins to wane. With a minimum temperature of 4°C (40°F) and a pleasant average of 17°C (64°F), the town invites visitors to enjoy the milder days. Maximum temperatures can reach up to 33°C (91°F), offering a final taste of warmth before autumn sets in. This month captures the essence of late summer, marked by bright days and cooler evenings, making it an ideal time for exploration and outdoor activities. As the scenic landscapes of Keszthely shift toward the rich hues of fall, the temperate climate encourages both relaxation and adventure in this charming Hungarian town.
In September, Keszthely experiences a noteworthy shift in precipitation, receiving 77 mm (3.0 in) of rain over 8 days. This marks a slight increase from the drier summer months of July and August, which saw 76 mm and 62 mm respectively. The arrival of autumn hints at a transition, with September's rainfall serving as a precursor to the heavier amounts expected in the coming months. This trend of gradually escalating precipitation prepares the region for the wetter October, which typically brings around 63 mm (2.5 in). As the year draws to a close, the fluctuating rainfall patterns highlight the temperamental nature of Keszthely's climate, balancing between dry summer days and the nourishing downpours of fall.
In September, Keszthely, Hungary experiences a moderate humidity level of 65%, marking a subtle transition as summer begins to fade into autumn. This is part of a clear trend observed throughout the year, where humidity peaks during the winter months, averaging around 90% in January and 89% in November and December. Interestingly, the late spring and summer months show a gradual decline, with the lowest humidity recorded in August at 60%. September's humidity level, slightly higher than August's, suggests a lingering warmth but hints at the impending cooler and wetter autumn months, especially as October's humidity rises sharply to 84%. This rhythm of changing humidity underscores the region's seasonal shifts, offering a compelling narrative of Keszthely's climate.
As summer gives way to autumn, September in Keszthely, Hungary, reflects a gradual shift in UV exposure. With a UV Index of 6, marking a high exposure category, residents can expect a burn time of 25 minutes – a slight increase from August's very high levels. This transition signals a retreat from the peak summer intensity, allowing for more comfortable outdoor activities while still necessitating sun protection. As the month progresses into October, the UV Index dips to 4, indicating that the need for sun safety will continue to lessen. For more detailed information on the UV Index throughout the year, visit Keszthely UV Index.
UV Risk Categories
As summer gracefully transitions into autumn, September in Keszthely, Hungary still basks in a generous 331 hours of sunshine, though it marks a noticeable decline from the sun-drenched days of July and August. This month reflects a typical downturn as daylight hours begin to wane, having peaked at a robust 430 hours in July. While September's sunshine is abundant compared to the winter months, it hints at the upcoming chill, with the total hours gradually diminishing toward October's 286 hours. Observing this shift, one can appreciate the lingering warmth of early fall while anticipating the cozy embrace of winter's shorter days.
In Keszthely, Hungary, September emerges as a promising month for sunshine, boasting a 54% chance of sunny weather. This optimistic outlook follows a summer of fluctuating sun exposure, with June leading the pack at 63%, while July and August trail slightly behind at 50% and 45%, respectively. Interestingly, September’s sunny potential marks a notable increase compared to the earlier months—particularly from April’s relatively low 40%. As summer transitions into autumn, the sun’s presence in September offers a delightful balance, inviting both visitors and locals to enjoy the appealing warmth before winter sets in.
As summer gives way to autumn in Keszthely, Hungary, September marks a gentle decline in daylight hours, with an average of 12 hours illuminating the day. This decrease follows the peak of 15 hours experienced during the vibrant months of June and July, reflecting a steady transition from the long, sun-drenched days of summer. While the daylight in August starts to wane to 14 hours, September embraces a cozy ambiance, offering a perfect blend of warm afternoons and cooler evenings. This gradual reduction suggests a time of preparation for the shorter days ahead, with October bringing just 10 hours of daylight, highlighting nature's rhythm as it prepares for the approaching winter months.
As September rolls in Keszthely, Hungary, the wind begins to whisper a change in the season. With an average wind speed of 2.4 m/s (5 mph), the breezes are milder compared to the warmer months, continuing the trend of softer winds experienced since early summer. This gentle air flows through the town, creating a serene backdrop for those enjoying the lingering warmth of early autumn. While winds peaked in April at 3.5 m/s (8 mph), September marks a gradual descent leading into the crispness of fall as October’s gusts pick up again to 2.9 m/s (7 mph). Overall, the transition from summer to autumn is beautifully encapsulated by these soothing September winds.
Weather in Keszthely varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Keszthely, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present starkly contrasting weather conditions. In September, temperatures range from a mild 4°C (40°F) at night to a warm 33°C (91°F) during the day, with an average of 17°C (64°F). The month sees about 77 mm (3.0 in) of rainfall over approximately 8 days, coupled with a humidity level of 65%. In contrast, January experiences much colder weather, with temperatures dipping as low as -14°C (7°F) and averaging just 1°C (34°F). The maximum temperature reaches 15°C (59°F), and precipitation is considerably lower at 29 mm (1.1 in) over about 5 days, though humidity is notably higher at 90%. For a closer look at January weather specifics, visit Keszthely weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a minimum of 4°C (40°F) to a maximum of 33°C (91°F), with an average of 17°C (64°F), making it a warm month ideal for outdoor activities. It experiences relatively high humidity at 65% and receives 77 mm (3.0 in) of precipitation over approximately 8 days. In contrast, February is much cooler, with temperatures varying from a minimum of -9°C (17°F) to a maximum of 19°C (66°F), averaging just 4°C (40°F). The month is marked by higher humidity levels at 84% but less precipitation, totaling 51 mm (2.0 in) over the same number of days. For a detailed look at February weather, check out Keszthely weather in February.
In comparing the weather between September and March, a notable difference in temperatures emerges. September boasts a warmer climate with minimums around 4°C (40°F) and maximums reaching up to 33°C (91°F), while March experiences colder temperatures, ranging from a brisk -13°C (10°F) to a more moderate 22°C (72°F). Precipitation is more frequent in September, totaling 77 mm (3.0 in) over 8 days, compared to March’s much lower total of 38 mm (1.5 in) over the same number of days. Additionally, March has a slightly higher humidity level at 78%, compared to September's 65%. For a closer look at March weather details, you can visit Keszthely weather in March.
In comparing the weather of September and April, notable differences arise in both temperature and humidity. September enjoys warmer temperatures, with averages around 17°C (64°F) and a maximum of 33°C (91°F), while April’s temperatures are significantly cooler, averaging 12°C (54°F) and peaking at 28°C (83°F). Precipitation is higher in September, totaling 77 mm (3.0 in) over 8 days, compared to April's 44 mm (1.7 in) also over 8 days. Additionally, September has a slightly lower humidity level at 65%, while April's humidity is higher at 73%. For a closer look at what to expect, check out Keszthely weather in April.
In comparison to May, September offers a wider temperature range, with minimums of 4°C (40°F), average highs reaching up to 33°C (91°F), and the potential for warm days contrasted by cooler nights. In May, temperatures are slightly cooler, with minimums at 3°C (38°F) and maximums peaking at 30°C (87°F). However, May experiences more precipitation, averaging 92 mm (3.6 in) over 14 days, compared to September's 77 mm (3.0 in) across 8 rainy days. Additionally, humidity levels are higher in May at 71%, while September's humidity averages around 65%. For a closer look at the weather specifics, you can check Keszthely weather in May.
In comparing the weather between September and June, we see notable differences in temperature and humidity. September experiences a broader temperature range, with minimums dropping to 4°C (40°F) and maximums reaching up to 33°C (91°F), while June maintains a warmer profile, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 36°C (97°F). Moreover, June tends to be slightly wetter, with 89 mm (3.5 in) of precipitation over 11 days compared to September's 77 mm (3.0 in) over 8 days. The humidity levels are also higher in June at 73%, compared to September's 65%. For a detailed look at Keszthely weather, you can visit Keszthely weather in June.
In comparing the weather of September and July, we see notable differences in temperature and humidity. September experiences a broader temperature range, with minimums dropping to 4°C (40°F) and maximums reaching 33°C (91°F), while the average temperature is around 17°C (64°F). In contrast, July remains warmer overall, with minimums at 11°C (53°F) and maximums soaring up to 37°C (99°F), yielding a higher average temperature of 22°C (73°F). Both months have similar precipitation levels, with September receiving 77 mm over 8 days and July slightly less at 76 mm over 9 days, although July has higher humidity at 70%, compared to September's 65%. For more detailed information about July weather, you can check Keszthely weather in July.
In comparing the weather of August and September, notable differences emerge. August typically features warmer temperatures, with a minimum of 10°C (50°F) and an average of 23°C (73°F), reaching highs of 38°C (100°F). In contrast, September experiences cooler temperatures, with a minimum of 4°C (40°F) and an average of 17°C (64°F), peaking at 33°C (91°F). Precipitation levels are slightly higher in September, measuring 77 mm (3.0 in) over 8 days, compared to August's 62 mm (2.4 in) on the same number of days. Additionally, September has a higher humidity level at 65% compared to August's 60%. For a more detailed view of August weather, you can refer to Keszthely weather in August.
September typically boasts warmer temperatures, with daily averages around 17°C (64°F) and maximums reaching up to 33°C (91°F). This month sees a fair amount of rainfall, totaling 77 mm over about 8 days, and the humidity sits at a comfortable 65%. In contrast, October brings a noticeable drop in temperature, with average highs around 12°C (54°F) and maximums peaking at 26°C (79°F). While it experiences slightly less precipitation at 63 mm, the humidity rises to 84%, making the air feel cooler and more crisp. For a detailed look at what to expect, check out Keszthely weather in October.
September and November exhibit distinct differences in weather patterns. In September, temperatures can soar as high as 33°C (91°F), with an average of 17°C (64°F) and a minimum of 4°C (40°F), making it a much warmer month overall. However, the month experiences 77 mm (3.0 in) of precipitation over about 8 days, with a relative humidity of 65%. In contrast, November sees a significant drop in temperature, with highs reaching only 20°C (68°F) and lows plunging to -5°C (24°F), resulting in an average temperature of just 7°C (45°F). Additionally, November experiences slightly less precipitation at 64 mm (2.5 in) over 9 days, but the humidity is notably higher at 89%. For more details, visit Keszthely weather in November.
In September, temperatures can vary significantly, with a minimum of 4°C (40°F), an average of 17°C (64°F), and a maximum reaching up to 33°C (91°F). This month experiences a moderate level of humidity at 65% and around 77 mm (3.0 in) of precipitation over about 8 days. In contrast, December brings a much colder climate, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 18°C (64°F) and an average of just 3°C (38°F). The humidity in December rises to 89%, and though it sees slightly less precipitation at 70 mm (2.8 in), it occurs over about 10 days, making the atmosphere feel damp and chilly. For more specific details about December weather in Keszthely, you can visit Keszthely weather in December.
As summer transitions to autumn, September in Keszthely brings a noticeable shift in weather. While the month still enjoys warm days with maximum temperatures flirting with the mid-30s, it also introduces cooler evenings that drop significantly. The average temperature hovers around a comfortable 17°C, making it an ideal time for leisurely strolls. However, with 77 mm of rainfall spread over about eight days, September is one of the wetter months, adding a refreshing touch to the landscape while maintaining a 65% humidity level. This combination of warmth and occasional showers makes September a unique blend of summer's end and autumn's approach, distinctly different from the hotter, drier months preceding it. For more insights on the local climate, check out Keszthely Climate.