Last updated: March 17, 2025
September in Rab, Croatia offers a delightful blend of warm weather and refreshing breezes, making it an ideal time for visitors. With maximum temperatures reaching 29°C (85°F) and an average of 20°C (69°F), the island enjoys pleasantly warm days. However, the temperature dips to a minimum of 10°C (50°F) during the cooler evenings. While the month averages approximately 171 mm (6.7 in) of rainfall over 10 days, this only adds to the lush beauty of the landscape. Combined with a humidity level of 64%, September in Rab promises a captivating atmosphere, perfect for outdoor exploration and relaxation by the sea.
In September, Rab, Croatia, experiences a delightful transition as summer gracefully gives way to autumn. With minimum temperatures around 10°C (50°F) and averaging a comfortable 20°C (69°F), the island boasts a pleasantly warm climate. Highs reach an inviting 29°C (85°F), creating the perfect backdrop for lingering beach days and outdoor explorations. This month marks a notable cooling from the peak summer heat, providing a refreshing atmosphere that invites both relaxation and adventure, making it an ideal time to enjoy elaborate sunsets without the summer crowds.
In September, Rab, Croatia experiences a significant uptick in precipitation, with 171 mm (6.7 in) of rainfall, making it one of the wettest months of the year. This surge is accompanied by approximately 10 rainy days, indicating a shift from the summer's drier spell. The robust rainfall not only replenishes the landscape but also ushers in the vibrant hues of autumn, highlighting the picturesque scenery of the island. This notable increase in precipitation contrasts sharply with the preceding months, revealing a clear trend from the drier summer months of June through August, where rainfall averaged only 45 mm across those three months. As the weather cools and the month transitions into October, Rab's lush environment thrives, setting the stage for a stunning fall season.
As summer transitions to autumn in Rab, Croatia, September witnesses a slight uptick in humidity, settling at 64%. This shift marks a departure from the warmer months, where humidity levels dip to their lowest, hitting 51% in August. The overall trend indicates a gradual increase in moisture as the year progresses, with January and November boasting the highest levels at 88% and 89% respectively. This seasonal rhythm highlights Rab's unique charm, where visitors can experience a balance of pleasant warmth and comfortable humidity before the cooler and more humid months set in.
As summer transitions into autumn in Rab, Croatia, the September UV Index reflects a shift in sun intensity, with a value of 7, categorized as high. This marks a slight decrease from the peak summer months of July and August, which boasted a UV Index of 9. Despite this reduction, visitors should still exercise caution, as the burn time is around 25 minutes—a reminder that UV rays remain potent. This month, like April and May, signifies a balance between enjoyable sun exposure and the need for protection, ensuring ample opportunities for outdoor activities while remaining mindful of skin safety. For a comprehensive understanding of UV levels throughout the year, check out the detailed insights available at Rab UV Index.
UV Risk Categories
As summer gracefully transitions into autumn, September in Rab, Croatia continues to bask in a generous 340 hours of sunshine, providing a warm embrace for those lingering on the shores. This month witnesses a beautiful decline in sunlight compared to the highs of summer, yet it still outshines the darker winter months. Notably, the shift from the peak sunshine of July and August to the mild warmth of September creates an inviting atmosphere for outdoor adventures and leisurely beach strolls. With a firm standing on the sunshine spectrum, September offers a perfect balance of warmth and tranquility, making it an ideal time to explore the island's stunning landscapes before the chill of October sets in.
In September, Rab, Croatia, boasts a 63% chance of sunny weather, positioning it favorably among the month’s averages throughout the year. Following the sunniest months of August and July—with chances of 68% and 59% respectively—September maintains a strong likelihood of pleasant, sunny days, perfect for late-summer activities. As the transition into autumn begins, the frequency of sunny weather drops, yet it remains considerably higher than in the colder months, such as January or November, where the probabilities plummet to 31%. This trend highlights September as an ideal time to enjoy Rab's picturesque beaches and vibrant outdoor experiences before the season fades.
As summer transitions to autumn, September in Rab, Croatia, offers a delightful balance of daylight, providing around 12 hours of sunshine. Following the sun-soaked months of June and July, where the days lingered at 15 hours, the gradual decrease in daylight reflects the inevitable shift in seasons. August retains a warm ambiance with 13 hours of light, yet September marks a gentle dip, ushering in shorter days— a hint of the cozy fall ahead. This change showcases a rhythmic ebb and flow of daylight, transitioning seamlessly from the vibrant energy of summer into the more subdued aura of autumn. The trend suggests that while daylight diminishes, it does so gracefully, embracing the beauty of each season's distinct character.
As summer transitions to autumn, September in Rab, Croatia brings a gentle shift in wind patterns, with an average speed of 3.1 m/s (7 mph). This slight dip from the summer months reflects the gradual cooling of the season, as the island's vibrant energy begins to mellow. Unlike the breezy summer days, September offers a more subdued atmosphere, allowing afternoons to linger pleasantly under the sun without the stronger gusts typical of earlier months. As we look ahead, the winds will pick up again in October, with speeds reaching 4.6 m/s (10 mph), signaling the arrival of more dynamic weather. Overall, September serves as a serene interlude, inviting visitors to savor the beauty of Rab while basking in the calming embrace of autumn's winds.
The weather in Rab 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 Rab and find detailed weather information for every month.
In September, the weather is generally mild and warm, featuring temperatures that range from a minimum of 10°C (50°F) to a maximum of 29°C (85°F) with an average of 20°C (69°F). The month sees about 171 mm (6.7 in) of precipitation over approximately 10 days, accompanied by a humidity level of 64%. In contrast, January presents a much colder climate, with temperatures dipping to a minimum of -7°C (20°F) and peaking at 14°C (58°F), resulting in an average temperature of only 6°C (44°F). Precipitation in January totals around 106 mm (4.2 in) for about 9 days, notably higher humidity levels reaching 88%. For further details on January weather, check Rab weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a mild 10°C (50°F) at night to a warm high of 29°C (85°F) during the day, with an average temperature of 20°C (69°F). The month sees a moderate amount of precipitation, totaling 171 mm (6.7 in), spread over 10 days, and a relative humidity of 64%. In contrast, February experiences much colder weather, with nighttime lows plunging to -6°C (22°F) and daily highs only reaching up to 17°C (64°F), leading to an average temperature of 8°C (47°F). While February has slightly less total precipitation at 142 mm (5.6 in) over 12 days, it also has higher humidity levels at 82%. For more details on February weather, visit Rab weather in February.
September and March present contrasting weather conditions. September typically enjoys milder temperatures, with a minimum of 10°C (50°F) and a max of 29°C (85°F), while March is much cooler, starting at a minimum of -7°C (20°F) and peaking at 18°C (64°F). Additionally, September sees significantly more rainfall, accumulating 171 mm (6.7 in) over 10 days, compared to March, which experiences about 95 mm (3.8 in) across 9 days. The humidity also varies; March is more humid at 73%, while September maintains a lower level at 64%. For more detailed information, you can check Rab weather in March.
September and April offer distinctly different weather experiences. In September, temperatures range from a minimum of 10°C (50°F) to a pleasant average of 20°C (69°F), reaching maximums of up to 29°C (85°F). This month typically sees 171 mm (6.7 in) of precipitation over 10 days, contributing to a humidity level of 64%. In contrast, April is cooler, with temperatures ranging from a minimum of 1°C (35°F) to an average of 13°C (55°F) and maximums of 22°C (72°F). The total precipitation in April is less, at 78 mm (3.1 in) over 8 days, but the humidity is slightly higher at 73%. For more detailed information on the weather in April, check out Rab weather in April.
In September, the weather tends to be warmer with average temperatures around 20°C (69°F) and maximums reaching up to 29°C (85°F), while May presents a cooler climate with an average of 17°C (62°F) and maximums of 25°C (77°F). September also experiences higher precipitation levels at 171 mm (6.7 in) over about 10 days, compared to May's 118 mm (4.7 in) across 12 days. Additionally, humidity in May is slightly higher at 70%, whereas September sees an average of 64%. For more details on May weather, check out Rab weather in May.
When comparing the weather in September and June, several notable differences emerge. September tends to be slightly cooler, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 29°C (85°F). In contrast, June offers warmer conditions, with temperatures typically between 13°C (56°F) and 31°C (88°F). Additionally, September sees significantly more rainfall, accumulating about 171 mm (6.7 in) over approximately 10 days, while June is drier with only 40 mm (1.6 in) over six days. Humidity levels are also slightly higher in June at 69%, compared to 64% in September. For more detailed insights on June weather, check out Rab weather in June.
September weather is generally cooler than July, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 29°C (85°F), compared to July's milder minimum of 17°C (63°F) and maximum of 30°C (87°F). Additionally, September experiences significantly more rainfall, with 171 mm (6.7 in) over 10 days, while July averages only 44 mm (1.7 in) over just 4 days. Humidity levels are quite similar, hovering around 64% in September and 63% in July, but the overall feel is markedly different, as September's cooler temperatures and increased precipitation mark the transition from summer to autumn. For more specific insights into July's weather conditions, you can check this link: Rab weather in July.
In comparing the weather of September and August, September experiences noticeably cooler temperatures, with a minimum of 10°C (50°F) and an average of 20°C (69°F), while August is warmer, featuring a minimum of 15°C (60°F) and an average of 25°C (77°F). August also boasts higher maximum temperatures, reaching up to 31°C (89°F), compared to September’s maximum of 29°C (85°F). Additionally, September sees significantly more rainfall, with 171 mm (6.7 in) over 10 days, in contrast to August’s lighter precipitation of 51 mm (2.0 in) over just 4 days. The humidity level is higher in September at 64%, while August maintains a lower humidity of 51%. For a closer look at August weather specifics, you can visit Rab weather in August.
In September, the weather is generally warmer with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 29°C (85°F), accompanied by an average temperature of 20°C (69°F). The month also sees significant precipitation, totaling 171 mm (6.7 in) over about 10 days, and a moderate humidity of 64%. In contrast, October brings cooler temperatures, with a minimum of 8°C (47°F) and a maximum of 23°C (73°F), averaging around 16°C (61°F). The month experiences slightly less rainfall at 128 mm (5.0 in) over 9 days, but the humidity rises to 83%, creating a more damp feel. For a detailed overview of weather conditions, you can check Rab weather in October.
September and November showcase contrasting weather patterns. In September, temperatures are relatively warm with a daily average of 20°C (69°F) and highs reaching up to 29°C (85°F), combined with a moderate humidity of 64%. However, this month also experiences considerable rainfall, totaling 171 mm (6.7 inches) over approximately 10 days. In contrast, November sees a significant drop in temperatures, with daily averages plummeting to 12°C (54°F) and maximums peaking at 19°C (67°F). The rainy season intensifies, bringing about 192 mm (7.6 inches) of precipitation over about 13 days, while humidity rises to a notable 89%. For more detailed information, you can visit Rab weather in November.
In September, the weather is generally warmer, with temperatures ranging from a comfortable 10°C (50°F) at night to a balmy 29°C (85°F) during the day, and an average temperature of 20°C (69°F). The month also sees moderate precipitation, totaling 171 mm (6.7 in) over about 10 days, while humidity remains at a manageable 64%.
In contrast, December brings much cooler temperatures, with nighttime lows dropping to 0°C (32°F) and daytime highs only reaching up to 16°C (61°F), resulting in a much chillier average of 9°C (48°F). Precipitation increases to 230 mm (9.1 in) over a total of 15 days, combined with higher humidity levels at 88%.
For more detailed weather insights, you can check Rab weather in December.
As summer transitions into autumn, September in Rab showcases a unique blend of warmth and moisture. With maximum temperatures still reaching a pleasant 29°C (85°F) and an average of 20°C (69°F), it's a vibrant time for outdoor activities. However, the increased precipitation—totaling 171 mm (6.7 in) over about 10 days—sets this month apart from the drier summer months, adding a refreshing touch to the island's atmosphere. The humidity levels are also a bit higher, hovering around 64%, creating a soft, inviting climate perfect for exploration. For a more detailed understanding of the weather patterns throughout the year, visit Rab Climate.