September Weather in Kupari, Croatia

Last updated: March 17, 2025

September in Kupari, Croatia, offers a delightful blend of warm temperatures and moderate humidity, making it a charming time to visit. With a maximum temperature reaching 28°C (83°F) and an average of 22°C (72°F), outdoor activities can be enjoyed comfortably. However, the weather can be unpredictable, as the month sees around 105 mm (4.1 in) of rain over approximately 6 days, adding a refreshing touch to the Mediterranean air. The humidity hovers around 65%, ensuring a pleasant, breezy atmosphere for both relaxation and exploration by the sea.

September Temperature in Kupari

As September unfolds in Kupari, Croatia, the summer warmth lingers, offering a delightful transition into autumn. With minimum temperatures around 14°C (57°F) and average highs peaking at 28°C (83°F), this month strikes a perfect balance between summer's residual heat and the coolness of fall. The average temperature of 22°C (72°F) invites visitors to enjoy the beaches and outdoor activities without the oppressive highs of August. As daylight begins to wane, the mild climate creates an inviting atmosphere, perfect for exploring the scenic coastal landscape while avoiding the crowds of peak tourist season. In summary, September in Kupari presents an ideal blend of warmth and comfortable conditions, making it a fantastic time to experience the beauty of Croatia.

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

The chart illustrates September temperature patterns in Kupari, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec475052566371757871645952
Data source: Temperature data for Kupari 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 Kupari

In September, Kupari, Croatia experiences a notable shift in weather, with precipitation amounting to 105 mm (4.1 in) across six rainy days. This marks an increase from the drier summer months, signaling the transition into the autumn season. Compared to the low rainfall in July and August, which saw just 16 mm and 26 mm respectively, September brings a refreshing change, as the atmospheric conditions become conducive to more frequent showers. This pattern continues as the region heads into October, where precipitation ramps up again, hinting at the wetter months ahead. The resurgence of rainfall in September not only rejuvenates the landscape but also indicates a gradual return to the wetter climate characteristic of the region as winter approaches.

September Precipitation Trends in Kupari

The chart displays monthly precipitation patterns in Kupari, 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.
JanFebMarAprMayJunJulAugSepOctNovDec14819217111387321626105166354311
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kupari

In September, humidity in Kupari, Croatia, settles at a comfortable 65%, marking a subtle transition from the drier summer months. As the high temperatures of July and August give way to the more temperate early autumn, this change is reflected in the increased moisture compared to the summer low of 53%. Notably, humidity begins to rise again in October, leading back to the higher levels characteristic of the winter months—around 78% in October, and peaking at 88% in January. This trend illustrates how September serves as a pivotal point in the year where the dampness starts to creep back in, hinting at the upcoming seasonal shifts.

September Average Humidity in Kupari

This chart illustrates the average monthly humidity levels in Kupari, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec88%82%79%75%74%66%59%53%65%78%85%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kupari

In September, Kupari, Croatia, experiences a high UV Index of 7, indicating that while the sun remains strong, the risk of harm from unprotected sun exposure is mitigated compared to the peak summer months. With a burn time of 25 minutes, it's essential to be mindful of sun safety as children return to school and outdoor activities continue. This trend shows a gradual decrease from the intense summer readings of 10 in July, reflecting a seasonal transition while still offering plenty of sunshine. As temperatures cool and the days grow shorter, September serves as a gentle reminder to enjoy the still-splendid late summer days while taking the appropriate precautions. For more detailed insights on UV exposure, visit Kupari UV Index.

Maximum UV Index Levels in Kupari for September

The chart shows the monthly maximum UV Index (UVI) for Kupari 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.
JanFebMarAprMayJunJulAugSepOctNovDec2467991097532
Data source: Kupari 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 Kupari

September in Kupari, Croatia, is a delightful blend of summer's warmth and the gentle onset of autumn, boasting an impressive 346 hours of sunshine. As the sun begins to lower in the sky, this month still shines bright, maintaining its position as a luminous finale to the summer season. This trend follows a peak in July with 432 hours, gradually tapering off yet still offering plenty of sun-soaked days for outdoor adventures. Comparatively, September showcases a significant amount of sunshine, especially when viewed alongside the winter months, such as January with only 195 hours. The steady decline from the highs of summer to the early autumn comforts hints at a memorable transition, inviting visitors to bask in the lingering warmth before the chill of October sets in.

Monthly Sunshine Duration in Kupari: September Highlighted

The September sunshine duration represents the total number of hours Kupari 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.
JanFebMarAprMayJunJulAugSepOctNovDec195h249h323h353h404h417h432h403h346h314h240h233h
Data source: Kupari September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kupari During September

In September, the likelihood of sunny weather in Kupari, Croatia, stands at a promising 59%. This marks a slight dip from the sun-drenched heights of August, which boasts an impressive 80% chance of sunshine. However, September still offers a favorable transition towards autumn, noticeably higher than the early months of the year, which struggle with sunshine probabilities as low as 36% in January. As summer fades, beachgoers and travelers can still expect a decent share of sunny days to enjoy the warm Adriatic climate before the cooler months arrive.

Percentage of Sunny Days in September in Kupari

The chart illustrates the percentage of sunny days in Kupari 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 Kupari experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec36%55%56%47%57%74%79%80%59%56%29%44%
Data source: Kupari September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kupari in September

As summer gently fades into autumn, September in Kupari, Croatia, offers a beautiful transition with about 12 hours of daylight. This marks a gradual decline from the sun-soaked days of June and July, which bask in 15 and 14 hours of light respectively. The shift reflects nature's cycle, where the vibrant, long days of summer progressively give way to the cozy, golden hues of fall. Following September, daylight further diminishes, giving way to the shorter days of October and November, which see around 11 and 9 hours of light. Overall, September serves as a delightful bridge, allowing residents and visitors to savor the last warm rays of sun before the winter months take hold.

Average Daylight Hours in Kupari for September

The chart illustrates the variation in daylight duration in Kupari throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 26m10h 33m11h 57m13h 23m14h 37m15h 13m14h 54m13h 49m12h 26m11h9h 45m9h 6m
Data source: Kupari daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Kupari

As September unfolds in Kupari, Croatia, the gentle caress of the wind begins to mellow, with average speeds settling at 3.0 m/s (7 mph). This marks a notable decline from the summer months, where breezes hovered around 3.1 m/s, creating an ideal backdrop for sun-soaked relaxation. As autumn approaches, the once lively gusts gradually give way to a more tranquil atmosphere. This trend continues into October, where wind speeds increase slightly to 3.9 m/s (9 mph), possibly foreshadowing the brisker conditions of the later months. The shifting winds reflect the seasonal transformation, inviting visitors to enjoy the serene beauty of Kupari while savoring the last whispers of summer.

Average September Wind Speed in Kupari

The chart displays monthly wind speed patterns in Kupari, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.14.54.14.34.13.13.13.43.0 m/s3.94.85.1
Data source: Kupari September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Kupari Compares to Other Months

The weather in Kupari 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 Kupari and find detailed weather information for every month.

In September, temperatures are pleasantly mild, with averages around 22°C (72°F) and daytime highs reaching up to 28°C (83°F). The month also sees an average of 105 mm (4.1 in) of precipitation over about 6 days, accompanied by a moderate humidity level of 65%. In contrast, January presents a starkly cooler climate, with average temperatures dropping to 8°C (47°F) and maximums only reaching 15°C (60°F). This winter month experiences more significant rainfall, totaling 148 mm (5.8 in) over approximately 11 days, along with a higher humidity of 88%. For a detailed look at January weather conditions, you can check Kupari weather in January.

September and February present contrasting weather conditions. In September, temperatures range from a comfortable minimum of 14°C (57°F) to a pleasant maximum of 28°C (83°F), with an average of 22°C (72°F). The month experiences moderate rainfall of 105 mm (4.1 in) over about 6 days, resulting in a humidity level of 65%. In stark contrast, February sees significantly cooler temperatures, with a minimum of 0°C (31°F) and a maximum reaching only 16°C (62°F), averaging around 10°C (50°F). This month is wetter, with precipitation totaling 192 mm (7.6 in) over 12 days, and increased humidity at 82%. For more details on February weather, visit Kupari weather in February.

When comparing the weather in September and March, it’s clear that these months present significantly different conditions. September boasts a much warmer climate, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 28°C (83°F), while March remains cool, with temperatures only reaching an average high of 17°C (64°F). Additionally, September experiences lower humidity at 65% compared to March's 79%, contributing to a more comfortable feel during outdoor activities. However, March sees more precipitation, with 171 mm (6.7 in) over 11 days, compared to September's 105 mm (4.1 in) over just 6 days. For a closer look at March weather specifics, visit Kupari weather in March.

When comparing the weather in September and April, a noticeable contrast emerges. September generally enjoys warmer temperatures, with minimums around 14°C (57°F) and maximums reaching 28°C (83°F), while April experiences a cooler range, with minimums of just 4°C (40°F) and maximums up to 23°C (74°F). Despite both months having a similar range of precipitation—105 mm (4.1 in) in September and slightly higher at 113 mm (4.5 in) in April—the number of rainy days is also greater in April at 9 days compared to 6 days in September. Additionally, April has higher humidity, averaging 75%, compared to 65% in September. For more detailed insights on the April weather specifically, you can refer to Kupari weather in April.

In comparing the weather of September and May, September generally offers warmer temperatures, with a minimum of 14°C (57°F) and an average high of 28°C (83°F), while May starts cooler, featuring a minimum of 10°C (51°F) and a maximum of 25°C (78°F). Rainfall is more frequent in May, registering precipitation on 10 days, compared to September's 6 rainy days, though September experiences higher total precipitation at 105 mm (4.1 in) versus May's 87 mm (3.4 in). Additionally, the humidity levels are notably higher in May at 74%, compared to September's 65%. For more details about May weather, check out Kupari weather in May.

When comparing the weather in September and June, both months exhibit similar minimum average temperatures, sitting at around 14°C (57°F) and 22°C (71°F) respectively. However, June tends to be slightly warmer on average, peaking at a maximum of 29°C (85°F) compared to September’s 28°C (83°F). Precipitation levels are notably different, with September receiving 105 mm (4.1 in) over about 6 days, making it significantly wetter than June, which sees only 32 mm (1.2 in) over just 3 days. Additionally, humidity levels are quite comparable, with September at 65% and June at 66%. For more specific details about June weather, you can refer to Kupari weather in June.

In comparing the weather between September and July, it's evident that July tends to be warmer and drier. July features a minimum temperature of 19°C (66°F) and an average high of 30°C (86°F), making it the hottest month, while September sees lower temperatures with a minimum of 14°C (57°F) and a maximum of 28°C (83°F). Moreover, precipitation in July is significantly less, at just 16 mm (0.6 in) over two days, compared to September's 105 mm (4.1 in) spread across six days, indicating that September is a wetter month. Humidity levels are also slightly higher in September at 65%, compared to 59% in July. For more details about the July conditions, you can check Kupari weather in July.

In comparing the weather of September to that of August, it's clear that September experiences cooler temperatures, with an average of 22°C (72°F) compared to August's warmer average of 25°C (78°F). Nighttime lows in September drop to 14°C (57°F), significantly lower than August's minimum of 20°C (69°F). Additionally, September sees more precipitation, accumulating 105 mm (4.1 inches) over about 6 days, while August is much drier, receiving only 26 mm (1.0 inches) across just 2 days. Humidity levels also rise in September, averaging 65%, compared to 53% in August. For more detailed information on August weather, you can visit Kupari weather in August.

September and October exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 14°C (57°F) to a maximum of 28°C (83°F), with an average of 22°C (72°F). The month experiences 105 mm (4.1 in) of precipitation over six days and humidity levels around 65%. In contrast, October sees cooler temperatures, with a minimum of 12°C (54°F), an average of 18°C (65°F), and a maximum of 23°C (75°F). This month also brings increased rainfall, totaling 166 mm (6.5 in) over eight days, alongside a rise in humidity to 78%. For more details about the weather in October, visit Kupari weather in October.

September typically offers milder weather with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 28°C (83°F). It's a relatively dry month with an average precipitation of 105 mm (4.1 in) over about 6 days, and humidity levels around 65%. In contrast, November brings a significant drop in temperatures, where averages range from 7°C (44°F) to 22°C (72°F), along with much higher precipitation levels. With 354 mm (13.9 in) of rain over approximately 13 days, November is markedly wetter, and the humidity rises to 85%. For more detailed weather information, you can check Kupari weather in November.

September and December present striking contrasts in weather. In September, temperatures range from a mild 14°C (57°F) at night to a pleasant average of 22°C (72°F), peaking at 28°C (83°F) during the day. The month experiences moderate precipitation of 105 mm (4.1 in) over about 6 days, with humidity sitting at a comfortable 65%. In contrast, December brings much cooler conditions, with a minimum temperature of 4°C (40°F) and an average of only 11°C (52°F), reaching a maximum of 17°C (63°F). The precipitation skyrockets to 311 mm (12.3 in) over 16 days, accompanied by an increase in humidity to 86%. For detailed information on December weather, check out Kupari weather in December.

Compare Kupari's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Kupari

As summer transitions into autumn, September in Kupari presents a delightful blend of warmth and freshness. With pleasant temperatures that provide a comfortable escape from the intense heat of August, this month offers a more moderate climate, perfect for enjoying the stunning coastal views. While the days are still abundant with sunshine, September also introduces a slightly elevated chance of rain, with several days seeing some precipitation. The increased humidity further enhances the Mediterranean feel, making it an appealing time for both exploration and relaxation. For a more in-depth look at seasonal variations, visit Kupari Climate.