Last updated: February 24, 2025
September in Ka'anapali, United States, offers pleasant weather characterized by a maximum temperature of 29°C (84°F) and an average temperature of 26°C (79°F). With minimum temperatures dipping to 23°C (74°F), this month presents a comfortable climate for both residents and visitors. The region experiences limited rainfall, with only 10 mm (0.4 in) recorded over just one day, allowing for plenty of sun-soaked outdoor activities. The humidity level is relatively high at 84%, adding a touch of tropical warmth to the balmy atmosphere. Ideal for beachgoers and explorers alike, September showcases Ka'anapali's enchanting beauty.
In September, Ka'anapali enjoys warm tropical temperatures that perfectly embody the essence of Hawaiian paradise. With minimums around 23°C (74°F) and maximums reaching up to 29°C (84°F), the weather feels invitingly consistent compared to the peak summer months. The average temperature lingers comfortably at 26°C (79°F), offering a delightful mix of sun and shade that keeps beachgoers and hikers satisfied. As the month progresses, you’ll experience a seamless transition from the peak summer warmth of August to the slightly cooler embrace of October, underscoring a pattern of only minor fluctuations in temperature throughout the months. This makes September an ideal time to bask in the sun or explore the famed island landscapes without the oppressive heat of high summer.
In September, Ka'anapali experiences a gentle transition into autumn, marked by 10 mm (0.4 in) of precipitation over just one rainy day. This month continues the trend of relatively low rainfall established in the summer, with a notable drop from the wetter early months of the year. The peak rainfall occurs in February, while September’s limited showers signal a shift towards drier weather, aligning with the overall pattern of decreasing precipitation as the year progresses. With its lush landscapes remaining vibrant despite minimal rainfall, Ka'anapali remains a stunning destination, inviting visitors to revel in its natural beauty under clearer skies.
As September arrives in Ka'anapali, the humidity remains notably high at 84%, just a slight dip from the peak of 85% observed in both July and August. This trend reflects the region's tropical climate, where humidity steadily increases from 78% in January to a summer apex during the peak months, before beginning its gradual decline as autumn approaches. While the air remains warm and balmy, the slight reduction in humidity by September offers a touch of relief, hinting at the approaching transition into the drier months of October and November. This rhythm of humidity underscores the island's lush allure, providing a consistent backdrop to Ka'anapali's stunning beaches and vibrant landscapes.
September in Ka'anapali boasts a UV Index of 12, categorizing it as extreme with a burn time of just 10 minutes. This places September slightly lower than the peak of 13 seen in the summer months of June, July, and August. The overall trend throughout the year indicates consistently high UV exposure, especially from March through October, where indexes are often rated extreme. As autumn approaches and the sun’s strength begins to wane, visitors should still be vigilant against sunburn, reinforcing the importance of sun protection even during these transitional months. For more detailed insights, check out the Ka'anapali UV Index.
UV Risk Categories
As summer transitions into autumn, September in Ka'anapali boasts a delightful 318 hours of sunshine, offering a perfect balance between warmth and relaxation. Following the sunniest months of July and August, which shine brightly with 349 and 338 hours respectively, September maintains a close embrace of sunlight, allowing visitors to bask in the beautiful Hawaiian atmosphere. While the days gradually shorten, the consistent hours of sunshine in recent months provide a seamless bridge to the milder October ahead, which still enjoys a generous 302 hours of sun. Whether it’s lounging on the beach or exploring the vibrant local culture, September's sunny disposition continues to invite adventure and tranquility in this tropical paradise.
In Ka'anapali, September maintains a promising likelihood of sunny weather, with a 69% chance of sunshine that reinforces the area's reputation as a tropical paradise. This month follows a stunning August, where the sun graces the sky an impressive 80% of the time, establishing a trend of increasing sunshine as summer peaks. While the sunny forecast dips slightly compared to the peak summer months, it remains robust, especially when contrasted with the gloomier winter months like December, which plummets to a mere 42% chance of sunshine. With its inviting climate, September offers an ideal blend of warmth and sunshine for beachgoers and nature lovers alike.
In September, Ka'anapali enjoys a delightful 12 hours of daylight, maintaining the trend of extended sunlight that peaks during the summer months. This month marks a subtle transition from the longer days of July and August, each offering 13 hours, to the shorter days as autumn approaches. The gradual shift reflects a rhythm of seasons, where the island basks in ample light before the days begin to shorten again in October and beyond. With its scenic landscapes illuminated by the golden sun, September remains a beautiful time to savor the warmth and vibrancy of this tropical paradise.
In September, Ka'anapali experiences a delightful continuation of summer breezes, with an average wind speed of 6.8 m/s (15 mph), matching that of August. This slight uptick from the calmness seen in mid-summer months hints at a gradual transition toward the more dynamic conditions arriving in October, where winds pick up further to 7.1 m/s (16 mph). The trend through the late summer months shows an invigorating blend of warmth and refreshing gusts, perfect for outdoor activities and enjoying the stunning coastal views. As the year progresses, November brings a marked decrease, tumbling to 4.8 m/s (11 mph), emphasizing the shift into a more tranquil phase of the season. Overall, September in Ka'anapali balances a vibrant yet soothing atmosphere, making it an ideal time for both relaxation and adventure by the sea.
The weather in Ka'anapali 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 Ka'anapali and find detailed weather information for every month.
In September, temperatures are warm, with a minimum of 23°C (74°F) and an average of 26°C (79°F), peaking at 29°C (84°F). The month experiences minimal precipitation, with just 10 mm (0.4 in) over 1 day, and humidity levels are relatively high at 84%. In contrast, January brings slightly cooler temperatures, with a minimum of 19°C (67°F), an average of 23°C (74°F), and a maximum of 26°C (79°F). However, January is wetter, recording 24 mm (0.9 in) of rainfall spread across 4 days, and the humidity is a bit lower at 78%. For more detailed information, you can check out Ka'anapali weather in January.
When comparing the weather in September and February, September generally presents warmer conditions, with temperatures ranging from a minimum of 23°C (74°F) to a maximum of 29°C (84°F) and an average of 26°C (79°F). In contrast, February offers cooler temperatures, with a minimum of 17°C (63°F) and a maximum of 26°C (78°F), averaging at 22°C (73°F). Additionally, February sees significantly more precipitation, accumulating 63 mm (2.5 in) over 8 days, compared to September's minimal 10 mm (0.4 in) on just 1 day. Despite the increased rainfall in February, humidity levels remain relatively comparable, with September at 84% and February at 79%. For more details, you can check Ka'anapali weather in February.
When comparing the weather in September and March, notable differences emerge. September typically enjoys warmer temperatures, with averages around 26°C (79°F) and maximums reaching 29°C (84°F), whereas March has a cooler average of 23°C (73°F) with max temperatures peaking at 26°C (79°F). Precipitation also varies significantly; September experiences only about 10 mm (0.4 in) of rain over one day, while March sees an increase to 33 mm (1.3 in) spread over approximately six days. Additionally, humidity levels are slightly higher in September at 84%, compared to 79% in March, making September feel a bit warmer and more humid overall. For more specific details about March weather, check out Ka'anapali weather in March.
In September, the weather is generally warmer, with temperatures ranging from a minimum of 23°C (74°F) to a maximum of 29°C (84°F) and an average of 26°C (79°F). The month sees little precipitation, with only 10 mm (0.4 in) of rain over just 1 day, and is characterized by high humidity levels at 84%. In contrast, April experiences slightly cooler temperatures, with a range from a minimum of 20°C (68°F) to a maximum of 26°C (79°F) and an average of 23°C (74°F). However, it is a wetter month, receiving 40 mm (1.6 in) of rain across 4 days, while maintaining a comparable humidity of 82%. For a more detailed look at the weather in April, you can check Ka'anapali weather in April.
In comparing the weather of September and May, September tends to be warmer, with average temperatures reaching around 26°C (79°F) and a maximum of 29°C (84°F), while May has slightly cooler averages at 24°C (76°F) and tops out at 27°C (81°F). Despite September’s higher temperatures, both months experience low precipitation, with September averaging only 10 mm (0.4 in) over a single day, compared to May's 21 mm (0.8 in) over the same duration. Humidity levels are fairly comparable, with September at 84% and May slightly lower at 83%. For more detailed information, you can check Ka'anapali weather in May.
When comparing the weather in September and June, both months exhibit warm temperatures and high humidity levels, maintaining a consistent average of around 26°C (79°F). September tends to be slightly warmer, with maximum temperatures reaching up to 29°C (84°F) compared to June's maximum of 27°C (82°F). Additionally, September experiences marginally more precipitation, with 10 mm (0.4 in) over one day, while June has notably less, with only 5 mm (0.2 in) and no rainy days at all. For a more detailed look at June weather, you can visit Ka'anapali weather in June.
In comparing the weather of September and July, we see that both months feature similar temperatures, with September having slightly higher maximum temperatures averaging 29°C (84°F) compared to July's 28°C (83°F). Both months maintain a warm minimum temperature of 23°C (74°F) and an average temperature of 26°C (79°F) for September and 26°C (78°F) for July. Precipitation levels are also quite comparable, with September recording 10 mm (0.4 in) and July at 9 mm (0.3 in), both occurring over just one day. Humidity is slightly lower in September at 84%, while July presents a higher humidity level of 85%. For a detailed look at July weather conditions, visit Ka'anapali weather in July.
September and August exhibit remarkably similar weather patterns, with both months featuring a minimum temperature of 23°C (74°F), an average temperature of 26°C (79°F), and a maximum temperature of 29°C (84°F). Precipitation levels are also quite close, with September experiencing 10 mm (0.4 in) of rain over just one day, while August sees slightly less at 9 mm (0.4 in) on the same number of days. Humidity levels remain high in both months, with September at 84% and August just slightly more humid at 85%. For more details on August weather, you can visit Ka'anapali weather in August.
In September, the weather is generally warm and pleasant, with temperatures averaging 26°C (79°F) and reaching a maximum of 29°C (84°F). Precipitation is minimal, with only 10 mm (0.4 in) over just one day, and humidity levels hover around 84%. In contrast, October sees a slight dip in temperatures, with an average of 25°C (78°F) and a maximum of 28°C (83°F). However, it is also wetter, with precipitation increasing to 27 mm (1.1 in) over three days, while humidity remains relatively stable at 83%. For more detailed information on October weather, you can check Ka'anapali weather in October.
In September, the weather is characterized by slightly warmer temperatures, with a minimum of 23°C (74°F) and an average of 26°C (79°F), peaking at a maximum of 29°C (84°F). The month experiences minimal precipitation, totaling 10 mm (0.4 in) over just one day, while humidity remains high at 84%. In contrast, November brings cooler conditions with a minimum of 22°C (71°F) and an average of 25°C (77°F), reaching a maximum of 27°C (82°F). Precipitation slightly increases to 12 mm (0.5 in) over three days, and humidity drops slightly to 82%. Overall, September tends to be warmer and drier compared to the more temperate and slightly wetter atmosphere of November. For more details, you can check Ka'anapali weather in November.
September typically offers warmer temperatures, with a minimum of 23°C (74°F) and an average of 26°C (79°F), peaking at 29°C (84°F). The month is relatively dry, experiencing only 10 mm (0.4 in) of precipitation over just one day, and humidity levels hover around 84%. In contrast, December sees slightly cooler conditions; the minimum temperature drops to 20°C (69°F), with an average of 24°C (75°F) and a maximum of 26°C (80°F). However, December is wetter, with a total precipitation of 40 mm (1.6 in) spread over six days and a humidity level of 81%. For more detailed information on the weather patterns, check out Ka'anapali weather in December.
As September rolls in, Ka'anapali enjoys warm temperatures that are slightly lower than the peak summer months, providing a pleasant escape for visitors. The humidity remains high, enhancing the tropical feel, while rainfall is minimal, typically falling on just one day. This makes September an ideal time to relish the stunning beaches and crystal-clear waters without the sweltering heat of July or August. For those looking to plan their trip, the weather during this month strikes an excellent balance of warmth and comfort. For more details on weather patterns, check out Ka'anapali Climate.