Last updated: February 24, 2025
In September, Santa Ynez experiences a delightful blend of warmth and mildness, with maximum temperatures reaching up to 32°C (90°F) and an average of 19°C (67°F). The month is characterized by a pleasant minimum temperature of 12°C (53°F), providing comfortable evenings. Remarkably, the region sees only 2 mm (0.1 in) of precipitation and boasts zero rainy days, ensuring plenty of sunshine for outdoor activities. With an average humidity level of 70%, visitors can enjoy the beautiful landscapes without the discomfort of excessive moisture, making September an ideal time to explore this charming locale.
In September, Santa Ynez basks in warm temperatures, marking the transition into the fall season. With a minimum of 12°C (53°F) and a maximum reaching a balmy 32°C (90°F), this month is one of the warmest of the year, showcasing an average temperature of 19°C (67°F). The trend of rising heat is evident, as September typically features more pronounced summer conditions compared to the cooler months that precede it. This delightful warmth encourages outdoor activities, making it an ideal time for exploring the region's stunning landscapes and vibrant vineyards before the cooler October air sets in.
In Santa Ynez, September marks a significant shift in the precipitation pattern, with a mere 2 mm (0.1 in) of rainfall recorded during the month. This continues the trend of minimal rain that began in June, where the region experienced almost a complete dry spell from July through August. Interestingly, September is starkly contrasted by the robust precipitation seen in the earlier months, such as January and February, both averaging over 100 mm (4.1 in) and exhibiting consistent rainfall across six days. As the year progresses into October and November, precipitation levels rise again, hinting at the region's cyclical weather patterns. The lack of rainfall in September not only reflects the typical dry summer season but also sets the stage for the gradual return of moisture in the fall months.
As summer transitions to fall in Santa Ynez, September brings a refreshing dip in humidity, averaging around 70%. This decline marks a significant shift from the higher humidity levels observed earlier in the year, particularly in the winter and early spring months, where levels soared to 80% or more. Following the warmer months, which hovered between 72% to 75%, September's breeze offers a welcome respite, signaling the onset of drier conditions that often characterize the autumn season. With this gradual decrease, residents and visitors alike can enjoy the crisp air and picturesque landscapes that September has to offer, setting the stage for the upcoming harvest festivities.
In September, Santa Ynez experiences a UV Index of 10, categorizing it as very high. This marks a slight decrease from the peak summer months, but the risk of harm from unprotected sun exposure remains significant, with a burn time of only 15 minutes. As the summer sun begins to wane, it’s crucial for residents and visitors alike to stay vigilant about sun safety. Keeping up with these trends, it’s clear that the region experiences intense UV rays, particularly from May through August. As you plan your outdoor activities, be sure to check the full details and updates on the Santa Ynez UV Index to stay protected!
UV Risk Categories
September in Santa Ynez brings a delightful blend of warmth and sunshine, totaling 317 hours of radiant light. As summer gently transitions into autumn, the month maintains a vibrant glow, echoing the peak sunshine of July and August. Though the hours dip from the dense summer sunshine, September still offers abundant daylight, underscoring its appeal for outdoor activities and vineyard visits. The gradual decline in daylight hours hints at the cooler months ahead, yet the lingering summer heat ensures that the charm of this picturesque region remains unyielding. Whether sipping wine beneath sun-drenched skies or enjoying crisp evening breezes, September is truly a captivating time in Santa Ynez.
As September rolls in, the likelihood of sunny weather in Santa Ynez reaches an impressive 81%, solidifying the month as one of the sunniest of the year. This trend builds on the sunny disposition seen throughout the summer, where July and August also boast 80% chances of clear skies. With the arrival of fall, the sun's presence remains strong, even surpassing the sunniness of earlier months like June and May. This consistency in sunny weather not only enhances outdoor activities but also invites visitors to savor the region's stunning landscapes. If you’re planning a trip in September, you can expect plenty of sunshine and idyllic weather to enjoy the charm of Santa Ynez.
As summer gives way to fall in Santa Ynez, September brings a gentle decrease in daylight, with an average of 12 hours illuminating each day. This marks a subtle transition from the sun-soaked months of June and July, which bask in 14 hours of daylight. The trend of diminishing sunlight is evident, as days begin to shorten after the peak of summer, leading into the crisp autumn days ahead. Following September, October sees a further decline to 11 hours, as the region prepares for the cozy embrace of winter with its shorter days and longer nights. This rhythmic shift not only enhances the natural beauty of the area but also invites residents and visitors alike to savor the changing seasons.
As September rolls into Santa Ynez, a gentle shift in the breeze can be felt, with average wind speeds dipping to a serene 3.3 m/s (7 mph). This marks a continuation of the trend seen through the summer, where July and August also recorded their lowest winds of the year at 3.4 m/s (8 mph). The summer's peak winds, reached in April at 5.8 m/s (13 mph), give way to the softer caresses of early fall, inviting residents and visitors to savor the tranquil atmosphere. While autumn begins to set in, a gradual increase in wind speeds can be expected as October approaches, hinting at a shift back to more robust breezes. The evolving wind patterns create a rhythm that reflects the changing seasons, making September a perfect time for leisurely strolls amidst the breathtaking landscapes of this picturesque region.
The weather in Santa Ynez 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 Ynez and find detailed weather information for every month.
September and January present contrasting weather patterns. In September, temperatures range from a low of 12°C (53°F) to a warm maximum of 32°C (90°F), with minimal precipitation at just 2 mm (0.1 in) and no rainy days, making it a dry and relatively humid month at 70%. In stark contrast, January features cooler temperatures, with a minimum of 6°C (42°F) and a maximum of 23°C (74°F). This month experiences significantly more rainfall, totaling 103 mm (4.1 in) over six days, and humidity rises to 80%. For a detailed look at January's climate, you can check out Santa Ynez weather in January.
September and February present distinctly different weather patterns. In September, temperatures range from a mild 12°C (53°F) at night to a warm 32°C (90°F) during the day, with low humidity at 70% and virtually no precipitation. In contrast, February experiences cooler temperatures, averaging 12°C (55°F) and only reaching a maximum of 23°C (74°F). The winter month sees significantly more rainfall, with 89 mm (3.5 in) over about six days and higher humidity at 83%. For more detailed information on February weather, you can check Santa Ynez weather in February.
Comparing the weather in September and March reveals notable differences. In September, temperatures range from a pleasant minimum of 12°C (53°F) to a warm maximum of 32°C (90°F), with an average of 19°C (67°F), and there is hardly any precipitation, making it a dry month with only 2 mm of rainfall. In contrast, March experiences cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 23°C (73°F), averaging around 12°C (55°F). However, March is significantly wetter, receiving 93 mm (3.7 in) of rain over nine days and higher humidity at 80%. For more detailed information, you can view Santa Ynez weather in March.
September typically features warmer temperatures compared to April, with average highs reaching up to 32°C (90°F) versus April's maximum of 28°C (84°F). In September, the average temperature is around 19°C (67°F), making it more pleasantly warm than April's average of 14°C (58°F). Additionally, September is characterized by minimal precipitation, with only 2 mm (0.1 in) recorded over no rainy days, while April experiences slightly wetter conditions with 19 mm (0.8 in) of rain spread across two days. Humidity levels are also comparable, with September at 70% and April slightly higher at 76%. For a detailed look at April weather, you can visit Santa Ynez weather in April.
In September, the weather is typically warmer than in May, with minimum temperatures averaging 12°C (53°F) and reaching a maximum of 32°C (90°F), while May sees cooler temperatures ranging from 8°C (47°F) to a maximum of 24°C (75°F). September boasts a dry climate with only 2 mm (0.1 in) of precipitation over the month and no rainy days, contrasting with May's 11 mm (0.4 in) of rainfall across two days. Humidity levels are somewhat similar, with September at 70% and May at 75%. For more details about May weather in Santa Ynez, you can visit Santa Ynez weather in May.
In comparing the weather of September and June, September tends to be warmer, with an average temperature of 19°C (67°F) and a maximum reaching 32°C (90°F), while June has a lower average of 17°C (63°F) and a maximum of 26°C (79°F). Both months experience minimal precipitation, recording only 2 mm (0.1 in) and no rainy days. Humidity is slightly lower in September at 70% compared to 74% in June. For more detailed information on June weather, you can check Santa Ynez weather in June.
September's weather showcases slightly warmer daytime temperatures, with a maximum of 32°C (90°F) compared to July's peak of 30°C (85°F). The minimum temperatures are a bit cooler in September, with a low of 12°C (53°F), unlike July's minimum of 14°C (57°F). Both months experience very little precipitation, with September receiving just 2 mm (0.1 in) and July almost none at 1 mm (0.0 in). Humidity is slightly lower in September at 70%, while July maintains a higher humidity level of 75%. For more detailed information, check out Santa Ynez weather in July.
In September, the weather is slightly cooler than in August, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 32°C (90°F), averaging around 19°C (67°F). In comparison, August has a narrower temperature range, with minimums of 14°C (58°F) and maximums of 29°C (84°F), averaging 20°C (68°F). Both months experience minimal precipitation, with September recording only 2 mm (0.1 in) and August slightly lower at 1 mm (0.1 in); neither month has any rainy days. Humidity levels remain similar, with September at 70% and August at 72%, contributing to warm and pleasant conditions throughout the late summer. For those interested in a more detailed examination, visit Santa Ynez weather in August.
September tends to be warmer than October, with average temperatures reaching 19°C (67°F) compared to October's average of 18°C (65°F). However, both months experience a similar range of minimum and maximum temperatures, with September peaking at 32°C (90°F) and October at 31°C (88°F). Rainfall is quite minimal in September with just 2 mm (0.1 in), while October sees a slight increase in precipitation, totaling 10 mm (0.4 in), although both months have no recorded rainy days. Humidity levels remain constant at 70% for both months. For more details on October weather, you can check Santa Ynez weather in October.
September typically features warmer temperatures, with an average of 19°C (67°F) and maximums reaching up to 32°C (90°F), while November sees cooler weather, with an average of 16°C (61°F) and highs of 27°C (81°F). Additionally, September is drier, experiencing no recorded days of precipitation, whereas November brings 27 mm (1.1 in) of rainfall across two days. Humidity levels are slightly higher in November at 74%, compared to September's 70%, creating a more comfortable but cooler atmosphere. For more detailed information, check out Santa Ynez weather in November.
In September, the weather is generally warm, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 32°C (90°F), and an average of 19°C (67°F). Precipitation is minimal, with only 2 mm (0.1 in) recorded over the month and hardly any rainy days. The humidity levels stand at 70%, creating a comfortable atmosphere for outdoor activities.
In contrast, December brings cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 23°C (74°F), averaging 13°C (56°F). This month sees a significant increase in precipitation, totaling 72 mm (2.8 in) over about six rainy days, resulting in a humidity level of 76%. For more detailed insights, you can check Santa Ynez weather in December. Overall, while September offers a warm and dry climate, December presents a cooler, wetter ambiance.
In September, Santa Ynez experiences a delightful transition, showcasing an inviting warmth that often surpasses other months. With generally mild temperatures and low precipitation, this time of year encourages outdoor exploration and enjoyment of the area's natural beauty. The humidity level, while noticeable, contributes to the region's lush landscapes, making it a perfect month for vineyards and outdoor activities. As the summer heat gently fades, September provides a cozy yet vibrant atmosphere that distinguishes it from the milder, wetter months to come. For more detailed insights, visit Santa Ynez Climate.