Last updated: February 24, 2025
September in Santa Barbara, Portugal, is characterized by mild temperatures and a comfortable atmosphere. With maximums reaching 24°C (76°F) and an average of 22°C (71°F), visitors can enjoy pleasant days, although evenings may cool slightly with minimums around 19°C (66°F). This month also experiences moderate rainfall, totaling 45 mm (1.8 in) over approximately 10 days, contributing to a humidity level of 82%. As a result, the weather offers a unique blend of summer warmth and the refreshing touch of early autumn, making it an ideal time for exploration and relaxation.
In September, Santa Barbara, Portugal, basks in the lingering warmth of summer, showcasing a delightful climate that invites both relaxation and exploration. With minimum temperatures around 19°C (66°F) and averages reaching 22°C (71°F), days are comfortably warm, perfect for enjoying outdoor activities. The peak temperatures can climb to a pleasant 24°C (76°F), making it one of the most inviting months of the year. This marks a seamless transition from the hotter months of July and August, allowing visitors to soak up the sun without the sweltering heat. As autumn approaches, the warm evenings and mild temperatures create an ideal backdrop for leisurely strolls along the coast, ensuring that September remains a cherished time to experience the beauty of Santa Barbara.
In September, Santa Barbara, Portugal experiences a noteworthy transition from the summer's dry spell to the onset of autumn rains. With an average precipitation of 45 mm (1.8 in) over approximately 10 days, the month serves as a pivotal time for the region. The rainfall slightly increases from the drier months of July and August, which recorded just 22 mm and 47 mm, respectively. This rejuvenation in moisture not only nourishes the landscape but also prepares the ground for the more substantial rains anticipated in the following months, particularly October and November. As the summer heat recedes, September's moderate showers foster a refreshing shift in the local climate, hinting at the vibrant changes to come.
In September, Santa Barbara, Portugal, experiences a comfortable humidity level of 82%. This marks a subtle drop compared to the preceding months, reflecting a trend of lower humidity as summer draws to a close. During the peak of summer in July, humidity rises to 86%, creating a lush, vibrant atmosphere. As the cooler autumn air takes hold in October and November, humidity continues its decline, reaching 79% and stabilizing around 80%. This pattern showcases the region's overall humidity stability throughout the year, with fluctuations primarily influenced by seasonal transitions, making September a pleasant month for both locals and visitors.
September in Santa Barbara, Portugal, sees a UV Index of 9, indicating a very high exposure category. As summer transitions into autumn, the burn time reduces to just 15 minutes, reflecting the lingering intensity of the summer sun. This peak, while slightly lower than the summer months of June and July, still underscores the need for protective measures against UV rays. Notably, the UV Index in September aligns closely with the earlier months of the year, particularly March, where the index first spiked into the high category. As the year progresses, you can expect a gradual decrease in UV intensity, with October bringing a drop to a high exposure level of 7. For more detailed insights into UV exposure throughout the year, visit Santa Barbara UV Index.
UV Risk Categories
As summer gracefully transitions into autumn, September bathes Santa Barbara, Portugal, in a warm glow, offering an impressive 317 hours of sunshine. This month reflects a gentle decline from the peak sunshine of July with 380 hours, while still surpassing the golden days of early spring and summer. The trend is evident: as the year progresses from January's modest 147 hours to the vibrant 336 hours in May, Santa Barbara's sunny disposition draws visitors yearning for warmth and light. With blissful days gradually shortening, September allows for delightful exploration, striking the perfect balance between lingering summer hues and the crispness of fall ahead.
In September, Santa Barbara, Portugal, boasts a 40% chance of sunny weather, making it a delightful time to visit. As summer transitions into autumn, the likelihood of sunshine dips slightly from August's 50%, yet remains significantly higher than the earlier months of the year. Notably, it marks a distinct peak in sunshine compared to the earlier critical spring months, where the chances hover around the low to mid-30s. This trend illustrates a gradual ascent in sunny days from winter, peaking in summer, and then tapering off as the year progresses. For those seeking a blend of warmth and sunshine, September stands out as an inviting option on the calendar.
As September arrives in Santa Barbara, Portugal, the daylight begins to gently wane, offering approximately 12 hours of sunlight. This marks a noticeable shift from the 14 hours of brilliant light experienced in the midsummer months of June and July. While the days grow shorter, they still retain a warmth that reflects the lingering essence of summer. Moving from the vibrant 14 hours in May to September's 12 hours, the transition signals the approach of autumn, characterized by a gradual decrease in daylight. Following September, October will continue this trend, offering 11 hours of daylight as the year winds down. This rhythm of nature invites residents and visitors alike to savor the remaining sun-drenched days before the cozy embrace of fall fully takes hold.
As September unfolds in Santa Barbara, Portugal, the coastal breeze blows gently at an average speed of 6.2 m/s (approximately 14 mph), a slight dip from the summer months. This marks a continuation of a trend where the wind speed begins to ease after a peak in earlier summer, reflecting the transition into autumn. While the summer brought spirited breezes with July and August sitting comfortably around 6.3 m/s and 6.1 m/s respectively, September invites a more tranquil atmosphere, perfect for leisurely strolls along the shoreline. As we move into October, the winds are set to pick up slightly, hinting at nature's rhythm of change—reminding us that each season brings its own distinct charm to this picturesque coastal haven.
The weather in Santa Barbara 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 Santa Barbara and find detailed weather information for every month.
In September, the weather is warmer with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 24°C (76°F), and humidity levels around 82%. It experiences about 45 mm (1.8 in) of precipitation over roughly 10 days. Conversely, January brings cooler temperatures, with minimums dropping to 11°C (52°F) and maximums reaching 19°C (66°F), averaging 16°C (61°F). This month experiences more precipitation, totaling 78 mm (3.1 in) over 11 days, accompanied by slightly higher humidity at 84%. For more details on January weather conditions, you can visit Santa Barbara weather in January.
September and February display distinct weather characteristics. In September, temperatures are generally warmer, with averages around 22°C (71°F) and a maximum of 24°C (76°F), while February sees cooler temperatures, averaging just 15°C (59°F) and peaking at 18°C (65°F). Precipitation is more prevalent in February, with 77 mm (3.0 in) over 13 days compared to September's 45 mm (1.8 in) over 10 days. Humidity levels remain similar, hovering around 82% in September and slightly higher at 83% in February. For more detailed insights, check Santa Barbara weather in February.
In September, the weather is generally warmer, with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 24°C (76°F) and an average of 22°C (71°F). The month sees about 45 mm (1.8 in) of precipitation over approximately 10 days, accompanied by a humidity level of 82%. In contrast, March experiences cooler temperatures, with a minimum of 10°C (50°F) and a maximum of 18°C (64°F), averaging 15°C (59°F). Precipitation is slightly higher at 49 mm (1.9 in), occurring over 9 days, along with a marginally higher humidity of 84%. For further insights on the weather conditions in March, check out Santa Barbara weather in March.
When comparing the weather in September and April, it's evident that September offers warmer temperatures, with an average of 22°C (71°F), compared to April's cooler average of 15°C (60°F). September also has a higher maximum temperature of 24°C (76°F) versus April's peak of 18°C (64°F). However, April experiences more precipitation, with 76 mm (3.0 in) over 13 days, compared to September's 45 mm (1.8 in) over 10 days. Both months have relatively high humidity, with April slightly higher at 84% compared to September's 82%. For more details on April weather, check Santa Barbara weather in April.
In September, the weather is generally warmer and more stable compared to May, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 24°C (76°F). In contrast, May experiences cooler average temperatures, with minimums around 12°C (53°F) and maximums peaking at 19°C (67°F). While both months witness a similar level of humidity—82% in September and 83% in May—precipitation is slightly higher in May at 54 mm (2.1 in) over 8 days, compared to September's 45 mm (1.8 in) over 10 days. For more detailed insights, check out Santa Barbara weather in May.
In September, temperatures in Santa Barbara average around 22°C (71°F), with a minimum of 19°C (66°F) and a maximum of 24°C (76°F), making it slightly warmer compared to June, where the average temperature is lower at 19°C (66°F), with a minimum of 15°C (58°F) and a maximum of 22°C (72°F). Both months experience similar levels of precipitation, with September receiving 45 mm (1.8 in) over about 10 days and June slightly less at 43 mm (1.7 in) over only 6 days. Humidity levels are relatively close as well, with September at 82% and June at 84%, indicating a similarly moist atmosphere. For a more detailed look at weather specifics, you can check out Santa Barbara weather in June.
When comparing the weather in September and July, both months exhibit relatively mild temperatures, with September showing slightly higher averages. In September, the temperatures range from a minimum of 19°C (66°F) to a maximum of 24°C (76°F), while July has slightly cooler temperatures, ranging from 18°C (65°F) to 23°C (74°F). September also sees more precipitation, averaging 45 mm (1.8 in) over 10 days, compared to July's 22 mm (0.8 in) over just 3 days. Additionally, humidity levels are higher in July at 86%, compared to September's 82%. For more details on the July weather, you can visit Santa Barbara weather in July.
In September, the weather remains quite similar to August, with both months experiencing minimum temperatures of 19°C (66°F), average temperatures around 22°C (72°F), and maximum temperatures reaching 24°C (76°F). However, September sees slightly more precipitation, totaling 45 mm (1.8 in) over 10 days compared to August, which has 47 mm (1.9 in) over 8 days. Humidity levels are consistent in both months at 82%, ensuring that the air remains warm and moist. For a deeper understanding of weather conditions during August, you can check out Santa Barbara weather in August.
In September, the weather is characterized by milder temperatures, with an average of 22°C (71°F) and a minimum of 19°C (66°F). The month experiences moderate rainfall, totaling 45 mm (1.8 in) over about 10 days, while humidity levels are relatively high at 82%. In contrast, October sees a slight drop in minimum temperatures to 15°C (58°F) and an average of 20°C (69°F). Rainfall significantly increases to 83 mm (3.3 in), occurring over 12 days, with humidity slightly lower at 79%. Despite the temperature drop, October maintains the same maximum of 24°C (76°F) as September. For more details on the October climate, check out Santa Barbara weather in October.
In September, the weather is generally warmer, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 24°C (76°F), accompanied by relatively low precipitation of 45 mm (1.8 in) over about 10 days. However, by November, temperatures cool down, featuring a minimum of 13°C (55°F) and an average of 18°C (65°F), while precipitation increases to 107 mm (4.2 in) across 14 days. Despite the dip in temperature, the humidity remains quite similar, averaging around 80%. For more detailed information, check out Santa Barbara weather in November.
September weather is generally warmer with an average temperature of 22°C (71°F) and maximums reaching up to 24°C (76°F), while December cools down significantly with an average of 17°C (63°F) and maximums of 20°C (68°F). Additionally, September sees less precipitation at 45 mm (1.8 in) over 10 days, compared to December's wetter conditions with 121 mm (4.8 in) over 13 days. Humidity remains relatively high in both months, but slightly increases in December to 85% from September's 82%. For more detailed insights, you can check out Santa Barbara weather in December.
As summer transitions into fall, September in Santa Barbara offers a delightful change in weather, with milder temperatures that create a comfortable atmosphere for outdoor activities. While the days are still warm, the evenings bring a refreshing coolness, making it a perfect time to explore the scenic beauty of the area. Despite the occasional rainfall, with about ten days seeing some precipitation, the humidity remains high, enhancing the lushness of the region. This month's unique weather patterns distinguish it from the hotter, drier summer months, inviting visitors to enjoy the perfect blend of warmth and cool breezes. For more insights into the region's weather patterns, check out Santa Barbara Climate.