Last updated: February 24, 2025
In Cayucos, United States, September showcases a delightful coastal climate characterized by a maximum temperature of 34°C (93°F) and an average of 19°C (67°F), providing a pleasant backdrop for outdoor activities. With a minimum temperature dipping to 13°C (56°F), the evenings offer a refreshing coolness. Rain is nearly nonexistent this month, with only 1 mm (0.0 in) of precipitation recorded across 0 days, creating perfect conditions for sunshine lovers. The humidity level stands at 70%, adding a touch of warmth to the air, making September an ideal time to soak in the beauty and charm of Cayucos.
In September, Cayucos experiences a remarkable shift in temperatures, marking it as one of the warmest months of the year. With a minimum of 13°C (56°F) and soaring to a maximum of 34°C (93°F), the coastal town basks in an average of 19°C (67°F), comfortably warmer than the preceding months. This late-summer heat reflects a trend of increasing temperatures as the year progresses, particularly notable from the mild patterns of spring and early summer. The warmth invites beachgoers and outdoor enthusiasts to enjoy the stunning coastal scenery, while the gradually cooling evenings offer a perfect respite after a hot day in the sun.
In September, Cayucos experiences a notable shift in precipitation patterns, consistent with the summer dry spell. The month sees a mere 1 mm (0.0 in) of rainfall, marking it as one of the driest periods of the year, with no recorded precipitation days. This pattern reflects a broader trend observed throughout the summer months, where a dramatic decline in rainfall occurs after the winter and spring wet seasons, culminating in relatively parched conditions. As autumn approaches, the region begins its gradual transition back to wetter months, with an uptick expected in rainfall beginning in October. Overall, Cayucos encapsulates the essence of California's Mediterranean climate, characterized by its pronounced dry summers and rainy winters.
As summer transitions to fall, September in Cayucos showcases a noticeable decline in humidity, averaging around 70%. This drop marks a shift from the higher levels experienced earlier in the year, with humidity peaking at 83% in February and gradually decreasing to its lowest point yet in the autumn month. The trend of lower humidity continues into October, anchoring the coastal town in a more comfortable and refreshing atmosphere. Overall, this pattern reflects a gradual easing of moisture in the air as the seasons change, inviting residents and visitors alike to enjoy the crisp, invigorating breezes of early fall.
In Cayucos, September ushers in a UV Index of 9, indicating a very high exposure category and a burn time of just 15 minutes. This marks a slight decline from the extreme levels often experienced during the summer months of June through August, when the index peaked at 12. As the year progresses into the fall, UV exposure begins to taper off, yet September still necessitates caution when basking in the sun. Residents and visitors should remain vigilant, as the lingering intensity can lead to sunburn in a matter of minutes. For more tips on sun safety and to monitor changes throughout the year, check out the detailed Cayucos UV Index.
UV Risk Categories
As September unfolds in Cayucos, the lingering warmth of summer continues to bathe the coastal town in golden light, offering 313 hours of sunshine. This marks a gentle decline from the peak summer brilliance of 384 hours in July, yet it still allows for plenty of time to enjoy the pristine beaches and picturesque sunsets. The trend of longer days persists through the spring and summer months, gradually tapering into the fall. As the days grow shorter and the vibrant hues of autumn begin to emerge, September stands out as a perfect transition month, capturing the essence of warmth before the cooler months set in. This blend of lingering summer joy and the promise of a new season makes September a cherished time in Cayucos.
As summer fades into early autumn, Cayucos experiences a pleasant dip in sunny days, with a 57% likelihood of sunshine in September. This marks a slight decline from the vibrant load of sun seen in May (76%) and June (69%), but still maintains a decent chance for sunny outings. Notably, September’s forecast aligns closely with July and August, which hover around the 59% and 60% mark, indicating a consistent climate pattern as the month transitions into the cooler embrace of fall. Overall, while the chances of sun in September are not the highest of the year, they remain favorable, allowing residents and visitors to enjoy the tail-end of summer's charm before the rainy season sets in.
As September rolls into Cayucos, the days begin to shorten, marking a transitional phase in the annual cycle of daylight duration. With 12 hours of daylight, this month presents a notable shift after the peak summer months, where daylight reached a maximum of 14 hours in June, July, and August. The gradual decrease from summer's abundance to autumn's more modest daylight reflects a natural rhythm, inviting residents and visitors alike to savor the remaining sunshine while preparing for the cozy, shorter days of fall. As the month progresses, families might find joy in evening outings, basking in the warm glow of sunset as they embrace the changing season.
As summer fades into fall, September's winds in Cayucos usher in a gentle calm, averaging just 2.0 m/s (4 mph). This marks a notable dip from the peak breezes of late spring, which often flirt with 3.4 m/s (8 mph) in May, creating a transition that paves the way for cooler autumn days. Interestingly, September sits alongside August, both showcasing a similar subdued wind pace. This gentle breeziness invites leisurely strolls along the coast, where visitors can savor the serene atmosphere before the winds pick back up in October. Overall, the month reflects a broader trend of decreasing wind speeds as the year matures, offering a peaceful respite before the gustier months ahead.
The weather in Cayucos 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 Cayucos and find detailed weather information for every month.
September weather is typically warm, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 34°C (93°F) and an average of 19°C (67°F). With only 1 mm of precipitation over no rainy days, the month enjoys a relatively dry atmosphere, albeit with a humidity level of 70%. In contrast, January experiences cooler temperatures, with a minimum of 6°C (43°F), an average of 12°C (55°F), and a maximum of 21°C (70°F). This month is significantly wetter, receiving 114 mm of rainfall over 6 days, and higher humidity at 80%. For more details on January weather, you can check Cayucos weather in January.
In September, the weather is characterized by warm temperatures, ranging from a minimum of 13°C (56°F) to a maximum of 34°C (93°F), with an average of 19°C (67°F). It is notably dry, with only 1 mm of precipitation and no rainy days, and humidity levels are at a moderate 70%. In contrast, February brings cooler weather, with temperatures ranging from a chilly 5°C (41°F) to a maximum of 24°C (75°F), averaging around 12°C (55°F). This month is much wetter, experiencing 73 mm (2.9 in) of precipitation over about six rainy days, and higher humidity at 83%. For a closer look at February weather specifics, visit Cayucos weather in February.
September typically offers warmer weather compared to March, with temperatures ranging from a comfortable minimum of 13°C (56°F) to a peak of 34°C (93°F) and little to no precipitation. The average temperature in September is around 19°C (67°F), and the humidity hovers at 70%. In contrast, March features cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 25°C (76°F), accompanied by significantly higher precipitation levels—73 mm (2.9 in) spread over 9 days. The humidity in March rises to 80%, making for a noticeably different climate. For a closer look at the weather specifics in March, you can check out Cayucos weather in March.
In September, the weather tends to be warmer, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 34°C (93°F) and an average of 19°C (67°F). The month is characterized by very little precipitation, averaging only 1 mm over no rainy days and maintaining a moderate humidity level of 70%. In contrast, April is cooler, featuring temperatures that range from 8°C (46°F) to 26°C (79°F), with an average of 14°C (58°F). This month experiences more rain, with total precipitation reaching 23 mm over three days, and humidity slightly higher at 76%. For a closer look at what to expect, check out Cayucos weather in April.
When comparing the weather in September and May, there are notable differences in temperatures and precipitation. September boasts warmer temperatures, with a minimum of 13°C (56°F), an average of 19°C (67°F), and a maximum reaching 34°C (93°F). In contrast, May features cooler temperatures, starting at a minimum of 9°C (48°F) and peaking at a maximum of 23°C (74°F), with an overall average of 15°C (59°F). Additionally, September experiences very little precipitation, with only 1 mm recorded over zero days, while May sees a moderate amount of rainfall at 10 mm over two days. The humidity levels are fairly similar, with September at 70% and May slightly higher at 75%. For more details, you can visit Cayucos weather in May.
When comparing the weather in September and June, September tends to be warmer overall. With temperatures ranging from a minimum of 13°C (56°F) to a maximum of 34°C (93°F), September enjoys an average temperature of 19°C (67°F). In contrast, June has slightly cooler temperatures, with a minimum of 11°C (53°F) and a maximum of 27°C (82°F), averaging 17°C (62°F). Both months experience minimal precipitation and relatively low humidity, with September at 70% and June slightly higher at 74%. For a closer look at the typical weather patterns, you can check Cayucos weather in June.
In comparing the weather between September and July, September experiences slightly higher temperatures, with average highs reaching 34°C (93°F) compared to July’s maximum of 29°C (84°F). While both months boast minimal precipitation, September remains drier with no recorded rainfall days, similar to July. Humidity levels are comparable, with September at 70% and July at 75%. For a detailed look at July weather patterns, you can check out this link: Cayucos weather in July.
In comparing the weather patterns of September and August, we see that September has a slightly broader temperature range, with minimums of 13°C (56°F) and maximums reaching up to 34°C (93°F), while August's temperatures hover between a minimum of 14°C (57°F) and a maximum of 29°C (84°F). Both months recorded negligible precipitation, each at 1 mm (0.0 in) and boasted zero rainy days. Humidity levels were quite similar, with September at 70% and August at 72%. This illustrates a transition from the warmer days of August to the hotter peaks of September. For a more detailed look at August weather in Cayucos, you can visit Cayucos weather in August.
In September, the weather is typically warmer with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 34°C (93°F) and an average temperature of 19°C (67°F). This month sees very little precipitation, with only 1 mm recorded and no rainy days, maintaining a consistent humidity level at 70%.
Conversely, October brings a slight drop in temperatures, with a minimum of 12°C (54°F), an average of 18°C (65°F), and a maximum of 29°C (85°F). The month also experiences a bit more moisture, totaling 10 mm of precipitation, though still with no rainy days and the same humidity level of 70%. For more detailed insights on the weather conditions, you can check Cayucos weather in October.
September typically boasts warmer temperatures with an average of 19°C (67°F) and maximum highs reaching up to 34°C (93°F), while November sees cooler conditions with an average temperature of 15°C (60°F) and maximums around 24°C (76°F). Additionally, September is notably dry, with no recorded precipitation, whereas November experiences increased rainfall with 27 mm (1.1 in) over four days. Despite the lower temperatures, November's humidity remains relatively high at 74%, slightly above September's 70%. For more detailed information, you can explore Cayucos weather in November.
In September, the weather is typically warm and dry, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 34°C (93°F) and an average of 19°C (67°F). There is virtually no precipitation, making it a great time for outdoor activities, with humidity at a moderate 70%. In contrast, December brings cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 23°C (74°F), averaging 13°C (55°F). This month sees significantly more rainfall, totaling about 70 mm (2.8 in) over six days, and the humidity increases slightly to 76%. For more details on December conditions, you can visit Cayucos weather in December.
As September unfolds in Cayucos, this month stands out for its mild and pleasant weather, offering a refreshing break from the summer heat. With an average temperature that hovers around a comfortable 19°C (67°F), it creates an inviting atmosphere for outdoor activities. Unlike the hot summer months that can soar up to 34°C (93°F), September delivers warmth without the excessive high temperatures, making it a perfect time for beach visits and exploration. Precipitation is nearly nonexistent, contributing to the atmosphere of sunny optimism with humidity levels at a comfortable 70%. For those keen on knowing more about the climatic nuances of this charming coastal town, check out Cayucos Climate.