Last updated: February 24, 2025
September in Channel Islands Beach, United States, offers a delightful climate perfect for outdoor activities. With maximum temperatures reaching 34°C (93°F) and a pleasant average of 20°C (69°F), the days are warm and inviting. Nights cool down to a comfortable minimum of 13°C (55°F), providing a refreshing respite. Notably, this month sees minimal precipitation, with only 2 mm (0.1 in) and zero rainy days, making it an ideal time for beach outings and exploration. The humidity level rests at 48%, ensuring the air remains comfortable. Whether you’re basking in the sun or enjoying evening strolls, September in Channel Islands Beach promises an enjoyable experience.
In September, Channel Islands Beach basks in warm and pleasant temperatures, making it an ideal time to enjoy the coastal beauty. The month starts with minimum temperatures around 13°C (55°F), offering a comfortable start to early fall. As the days progress, the average temperature climbs to 20°C (69°F), ensuring a perfect balance for both sunbathers and outdoor enthusiasts. With daily highs reaching a peak of 34°C (93°F), there's plenty of warm sunshine to soak up before the cooler months arrive. This trend of warm weather carries over from the summer months, providing a seamless transition into autumn, while still holding onto that inviting beach vibe.
September in Channel Islands Beach is marked by notably dry conditions, as the area receives a mere 2 mm (0.1 in) of precipitation, mirroring the levels seen in August and July. With no recorded precipitation days this month, it’s a continuation of a prolonged dry spell that peaks during summer with minimal rain. This trend demonstrates a consistent pattern of decreasing rainfall from late spring through early fall, creating an almost drought-like environment during these months. As the region transitions into autumn, the anticipation grows for the increase in precipitation that typically accompanies the later months, hinting at the rejuvenation that comes with the changing seasons.
As summer gives way to autumn, September's humidity in Channel Islands Beach sees a modest uptick to 48%, transitioning from the year’s lowest levels in the warmer months. This slight increase marks a return to more comfortable conditions after August's dry spell, which recorded a refreshing low of 39%. Notably, the trend throughout the year reveals a gradual rise in humidity as the seasons shift, with the highest levels occurring in the colder months. From the sweltering summer, where humidity drops to an annual low, September serves as a gentle reminder that the lush, moisture-rich months are just around the corner, leading into October's 59% humidity.
As summer winds down, September's UV Index in Channel Islands Beach remains notably high, with a rating of 10, placing it in the very high exposure category. This marks a slight decline from the extreme levels observed in the peak summer months of July and August, where the index reached an intense 12. With a recommended burn time of just 15 minutes, it's essential for beachgoers to stay vigilant even as the sun's intensity begins to wane. As fall approaches, the UV Index will continue to drop, with October anticipated to see a decrease to 7, shifting into the high exposure range. Stay informed and protect your skin by referring to the Channel Islands Beach UV Index for your next sunny outing!
UV Risk Categories
In September, Channel Islands Beach basks in a generous 315 hours of sunshine, a delightful continuation of summer’s warmth as the season gracefully transitions into fall. This month sits comfortably between the sun-drenched peak of July at 383 hours and the softer light of October, which sees a decline to 294 hours. As daylight starts to dwindle, September still offers ample opportunities to enjoy outdoor adventures, making it an ideal time for beachgoers and nature lovers alike. The consistent trend of increasing sunshine hours from the cooler months of winter—with a striking leap to 367 hours in June—culminates in a vibrant autumn that beckons visitors to relish the lingering warmth before winter's arrival.
In Channel Islands Beach, September heralds a strong likelihood of sunny weather, with a 71% chance of sunshine. This trend highlights a consistent warmth as the summer months wind down, mirroring the sunny dispositions of July and August, which also boast the same likelihood. As summer transitions into fall, the days remain bright before the sun’s probability dips in October. Notably, while January to March show a gradual rise in sunny days, September holds steady with a promise of pleasant weather, making it an ideal month for those seeking outdoor activities amidst the continuing California sunshine.
As summer fades into autumn, September in Channel Islands Beach offers a delightful transition in daylight hours. With an average of 12 hours of daylight, this month represents a gentle decline from the sun-drenched days of July and August, which both basked in 14 hours of sunshine. The gradual shift reflects a broader trend of decreasing daylight leading into the cooler months—starting from a robust 14 hours in June and tapering off to 11 hours by October. This pattern not only marks the end of the long, sunlit summer days but also welcomes the crisp, refreshing air of fall while still providing ample time for outdoor activities. Embrace this blend of sunlight and the onset of autumnal beauty—the perfect backdrop for memorable September days at the beach.
As September approaches, Channel Islands Beach experiences a gentle decline in wind activity, with an average wind speed of 2.4 m/s (5 mph)—the lowest of the year. This subtle ebb reflects a broader trend, as the summer months saw a slight breeze of about 2.5 to 2.6 m/s, creating the perfect conditions for beachgoers and water enthusiasts. In contrast to the earlier months, where winds picked up to a refreshing 3.1 m/s in April, September's calmer atmosphere invites tranquility and relaxation. As autumn begins to settle in, this change in wind dynamics enhances the serene coastal experience, making it an ideal time for leisurely strolls along the shoreline.
The weather in Channel Islands Beach 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 Channel Islands Beach and find detailed weather information for every month.
September and January present strikingly different weather patterns. In September, temperatures range from a mild 13°C (55°F) at night to a warm 34°C (93°F) during the day, with low humidity levels at 48% and almost no precipitation, making it an ideal time for outdoor activities. In contrast, January experiences cooler temperatures, peaking at 26°C (79°F) and dipping to a minimum of 6°C (43°F), coupled with higher humidity at 78% and significant rainfall totaling 84 mm (3.3 in) over about five days. This shift provides a more varied climate, particularly for those exploring Channel Islands Beach weather in January.
September and February present strikingly contrasting weather patterns. In September, the temperatures are generally warmer, with a minimum of 13°C (55°F) and a maximum of 34°C (93°F), paired with very low precipitation at just 2 mm (0.1 in) across zero rainy days and a comfortable humidity level of 48%. In contrast, February experiences cooler temperatures, ranging from a minimum of 5°C (42°F) to a maximum of 27°C (81°F). This month is also characterized by significantly higher precipitation, totaling 69 mm (2.7 in) over six rainy days, and a much higher humidity level at 82%. For those interested in the specifics of February weather in this region, you can check out Channel Islands Beach weather in February.
In comparing September and March weather, September emerges as a warm and dry month, with average temperatures reaching around 20°C (69°F) and maximums hitting 34°C (93°F). It boasts minimal precipitation, typically recording just 2 mm (0.1 in) over the month, with humidity at a comfortable 48%. In contrast, March is significantly cooler, with temperatures averaging 14°C (57°F) and high peaks of 23°C (74°F). March is also much wetter, experiencing around 78 mm (3.1 in) of rain spread over approximately 8 days, accompanied by higher humidity levels at 75%. For those interested in the specific weather details during March, check out Channel Islands Beach weather in March.
In September, the weather tends to be warmer, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 34°C (93°F), contributing to an average of 20°C (69°F). The month features very little precipitation, with just 2 mm (0.1 in) and no rainy days, resulting in humidity levels averaging 48%. In contrast, April experiences cooler temperatures with a minimum of 8°C (47°F) and a maximum of 29°C (85°F), leading to an average of 16°C (60°F). This month is also characterized by higher humidity at 68% and more precipitation, with 20 mm (0.8 in) spread across three rainy days. For a detailed look at the weather patterns, you can refer to Channel Islands Beach weather in April.
In September, the weather is typically warmer, with average temperatures around 20°C (69°F) and a max reaching up to 34°C (93°F). The month enjoys very little precipitation, averaging only 2 mm, and experiences no rainy days, allowing for plenty of sunshine and low humidity at 48%. In contrast, May presents cooler conditions, with average temperatures of 16°C (61°F) and a maximum of 26°C (80°F). This month sees more precipitation, totaling 14 mm over 2 days, and higher humidity levels at 57%. For a detailed look at the weather during this time, you can check Channel Islands Beach weather in May.
In comparing the weather between September and June, September tends to be warmer, with average temperatures reaching around 20°C (69°F), peaking at a maximum of 34°C (93°F). In contrast, June has a cooler average temperature of 18°C (65°F), with a maximum of 29°C (85°F). Both months experience very little precipitation, with September registering only 2 mm (0.1 in) and June slightly higher at 4 mm (0.1 in), but neither month sees any rainy days. Additionally, humidity levels are somewhat lower in September at 48%, compared to June's 52%. For more specific insights on June weather, check out Channel Islands Beach weather in June.
In comparing the weather of September and July, both months exhibit warm temperatures with similar maximums reaching 34°C (93°F) in September and 34°C (94°F) in July. September's minimum temperature is slightly lower at 13°C (55°F) compared to July's minimum of 15°C (59°F), contributing to an average temperature of 20°C (69°F) in September versus 21°C (69°F) in July. Precipitation levels are minimal in both months, with September receiving only 2 mm (0.1 in) and July seeing just 1 mm (0.1 in), and both months record no rainy days. The humidity is slightly higher in September at 48%, compared to 46% in July. For more details, you can check out the Channel Islands Beach weather in July.
In comparing the weather of September to August, September experiences a broader temperature range, with a minimum of 13°C (55°F) and a maximum reaching up to 34°C (93°F), while August has a milder range from a minimum of 16°C (61°F) to a maximum of 30°C (87°F). The average temperature in September is slightly lower at 20°C (69°F), compared to August's average of 21°C (70°F). Both months recorded minimal precipitation, with 2 mm (0.1 in) and no rainy days, but September's humidity is higher at 48%, compared to August's 39%. For more details on weather patterns during this time, you can check Channel Islands Beach weather in August.
In comparing the weather between September and October, September generally experiences warmer temperatures with an average of 20°C (69°F) and a maximum reaching 34°C (93°F). In contrast, October sees a slight decrease in the average temperature to 19°C (66°F), though it can reach a higher maximum of 36°C (97°F). While September has low humidity at 48% and minimal precipitation, October introduces slightly higher humidity at 59% and an increase in rainfall to 9 mm (0.4 in), although both months record zero rainy days. For more details about the specific weather conditions, you can check out Channel Islands Beach weather in October.
September weather typically features warmer temperatures, with averages around 20°C (69°F) and maximums reaching up to 34°C (93°F). In contrast, November cools down significantly, with average temperatures dropping to 16°C (61°F) and maximums peaking at 28°C (83°F). Additionally, September enjoys dry conditions with negligible precipitation, while November experiences a slight increase in rainfall, averaging 20 mm (0.8 in) over one day. Humidity levels also rise from 48% in September to a more humid 72% in November. For more specific details about the November weather, you can visit Channel Islands Beach weather in November.
In September, the weather is characterized by warm temperatures, with a minimum of 13°C (55°F) and an average of 20°C (69°F), peaking at a hot 34°C (93°F). The month sees very little precipitation, with only 2 mm recorded over zero rainy days, and a relatively low humidity of 48%. In contrast, December brings a notable drop in temperature, where the minimum reaches 6°C (43°F) and the average settles at 13°C (57°F), with a maximum of 25°C (78°F). This month also experiences significantly higher precipitation, totaling 70 mm over five rainy days, coupled with increased humidity at 76%. For more specific weather details, you can check Channel Islands Beach weather in December.
In September, Channel Islands Beach enjoys a delightful blend of warmth and low humidity, making it one of the most pleasant months of the year. Compared to the cooler winds of spring and the chill that follows in the winter months, the gentle temperatures, with highs reaching into the low 30s°C (high 80s°F), invite both locals and visitors to savor outdoor activities without the worry of rain, as the month sees virtually no precipitation. This unique weather pattern sets September apart, offering a stunning backdrop for beachgoers and nature enthusiasts alike. For a deeper insight into the year-round climate of this beautiful locale, visit Channel Islands Beach Climate.