Last updated: February 24, 2025
September in Waimanalo, United States offers a delightful blend of warm temperatures and tropical ambiance. The maximum temperature reaches a pleasant 28°C (83°F), while the average hovers around 26°C (79°F), providing ideal conditions for outdoor activities. With a minimum temperature of 23°C (75°F), evenings are comfortably warm. Expect some rain, as the region sees approximately 19 mm (0.7 in) of precipitation over 4 days, contributing to the lush scenery. The humidity level sits at 82%, enhancing the tropical feel, making September a quintessential month to experience the natural beauty of Waimanalo.
In Waimanalo, September welcomes a delightful warmth that signals the tail end of summer. With minimum temperatures hovering around 23°C (75°F) and average highs reaching 28°C (83°F), the weather remains inviting yet comfortable. This month shows a slight upward trend from August, where the averages were similarly warm at 26°C (79°F), indicating a consistent tropical climate. As the days shorten and the humidity lingers, September provides an appealing backdrop for outdoor adventures, offering a perfect blend of sunshine and ocean breezes for both locals and visitors alike. The subtly rising temperatures coupled with balmy evenings create an atmosphere that's hard to resist, making it a cherished time of year in this vibrant coastal community.
In Waimanalo, United States, September experiences a notable shift in precipitation patterns as the summer months draw to a close. With an average rainfall of 19 mm (0.7 in) spread over 4 days, this month marks a slight uptick compared to the drier summer, showcasing a gradual transition toward wetter conditions. This increase is particularly evident when contrasted with July and August, both of which recorded significantly lower rainfall (13 mm and 15 mm respectively) over just a couple of days. The weather in September hints at the coming autumn, setting the stage for the wetter months ahead, as the precipitation volume rises before peaking in the subsequent months of October and December. Thus, September acts as a bridge, gently ushering in the increased rainfall that characterizes Waimanalo's climate as the year concludes.
In Waimanalo, United States, September continues the trend of elevated humidity typical for the late summer months, with levels at a comfortable 82%. This slight decline from August's peak humidity of 83% signals the beginning of a subtle transition towards the drier fall season. Remarkably, throughout the year, humidity fluctuates within a modest range, peaking at 83% during the height of summer in both July and August. As we move into October, a gradual drop to 81% is anticipated, hinting at the arrival of cooler and less muggy days ahead. Overall, September's humidity encapsulates the warmth of summer while hinting at the changes that will soon unfold.
In Waimanalo, September continues the trend of extreme UV exposure, maintaining a high UV Index of 12. This month, sun-seekers must be especially cautious, as the recommended burn time is a mere 10 minutes. Following the peak summer months of June, July, and August—all registering at a blistering UV Index of 13—September's slightly lower index still demands vigilance. As autumn approaches, the UV levels gradually taper off, with October showing a decrease to 11, but the consistent dangerous levels throughout the summer and into fall underscore the importance of sun safety in this tropical paradise. For more detailed insights, check out the complete Waimanalo UV Index.
UV Risk Categories
September in Waimanalo, United States, offers a delightful blend of warm weather and a generous 319 hours of sunshine, making it one of the sunniest months of the year. This radiant month follows the peak of summer, where July shines the brightest with 350 hours, and transitions into a cooler autumn, as the hours gradually decrease into October's 302 hours. The consistency in sunshine from June through September, with hours remaining above 300, highlights the region's favorable climate for outdoor activities. Just a few months earlier, May basked in 337 hours of sunlight, setting the stage for a sun-soaked September that invites locals and visitors alike to enjoy the beautiful beaches and lush landscapes of Waimanalo.
In Waimanalo, the likelihood of sunny weather sees a slight dip in September, with a 70% chance of sunshine. This is a continuation of a generally bright summer, as both August and May boast higher probabilities of clear skies at 74% and 73% respectively. The trend towards sunnier days begins to soften as autumn approaches, yet September remains a favorable month for outdoor activities, maintaining a solid chance of enjoying the sun. As the year unfolds, there is a noticeable decrease in sunlit days heading into winter, with December offering just 41% chance of sunshine, making September a sweet spot for those looking to bask in the warm rays before the cooler months settle in.
As summer winds down in Waimanalo, September brings a harmonious balance of daylight, with the sun gracing the sky for 12 hours each day. Following a peak of 13 hours in the vibrant summer months of May through July, the days begin to shorten, but not dramatically. The transition is subtle, as daylight remains steady in September before gradually tapering off into autumn and winter. This trend showcases the subtle shifts in nature, allowing residents and visitors alike to savor the lingering warmth and extended sunsets before the reduced daylight of October settles in.
As September winds sweep through Waimanalo, they carry an average speed of 7.7 m/s (17 mph), marking a slight increase from the summer's breezy days. The shift in wind patterns is notable, with a gradual rise from the cooler months of early spring to the warmer summer months, peaking in July at 8.7 m/s (19 mph). Following this high, September maintains a lively tempo before transitioning into October's winds, which pick up even further to 8.0 m/s (18 mph). This trend suggests a dynamic climate where the lively September gusts prepare the landscape for the more consistent fall winds that follow. Overall, September serves as a bridge between the vibrant summer breezes and the steadier autumn gusts, keeping the coastal environment refreshingly alive.
The weather in Waimanalo 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 Waimanalo and find detailed weather information for every month.
In September, temperatures are generally warmer, with minimums around 23°C (75°F) and maximums reaching up to 28°C (83°F), while the average temperature hovers at 26°C (79°F). The humidity is relatively high at 82%, along with a modest precipitation of 19 mm (0.7 in) over about four days. In contrast, January features slightly cooler temperatures, with minimums of 20°C (69°F) and maximums of 25°C (78°F), resulting in an average of 23°C (74°F). The humidity is lower at 78%, with precipitation measuring around 16 mm (0.6 in) also spanning four days. For more detailed insights, check Waimanalo weather in January.
In September, the weather is warm and relatively dry, with average temperatures ranging from a minimum of 23°C (75°F) to a maximum of 28°C (83°F). The month sees about 19 mm (0.7 in) of precipitation over approximately 4 days, and humidity levels are quite high at 82%. In contrast, February experiences cooler temperatures, averaging 23°C (73°F) with a minimum of 17°C (63°F) and a maximum of 25°C (77°F). However, it is significantly wetter, with 60 mm (2.4 in) of rain spread over 9 days, and slightly lower humidity at 79%. For a detailed look at the weather in February, you can visit Waimanalo weather in February.
In comparing the weather between September and March, September tends to be warmer with average temperatures ranging from a minimum of 23°C (75°F) to a maximum of 28°C (83°F), while March experiences slightly cooler temperatures with averages between 19°C (67°F) and 25°C (77°F). September also sees less precipitation, accumulating only 19 mm (0.7 in) over approximately 4 days, compared to March's heavier rainfall of 66 mm (2.6 in) spread over 9 days. Despite the warmer temperatures in September, humidity levels are relatively high in both months, at 82% for September and 78% for March. For a more detailed look at the weather in March, check out Waimanalo weather in March.
When comparing the weather in September and April, we see some notable differences. September typically boasts slightly warmer temperatures, with an average of 26°C (79°F) and a maximum of 28°C (83°F), compared to April's average of 24°C (75°F) and a maximum of 25°C (78°F). Additionally, September experiences less precipitation with only 19 mm (0.7 in) over 4 days, while April receives more rainfall at 30 mm (1.2 in) across 6 days. Humidity levels remain quite similar in both months, with September at 82% and April at 81%. For more detailed information on April weather, you can check the following link: Waimanalo weather in April.
September generally features slightly warmer temperatures compared to May, with average highs reaching up to 28°C (83°F) against May's maximum of 27°C (80°F). The minimum temperature in September is also higher at 23°C (75°F), compared to May's 19°C (66°F). Precipitation levels are somewhat lower in September, with 19 mm (0.7 in) of rain over 4 days, while May sees a bit more with 23 mm (0.9 in) also over 4 days. Both months share the same humidity level of 82%, creating a consistently tropical atmosphere. For more detailed insights, you can check out Waimanalo weather in May.
In comparing the weather between September and June, both months feature similar temperature ranges, with September having a slightly higher average temperature of 26°C (79°F) compared to June's 25°C (78°F). Both months experience a minimum temperature of around 23°C (74°F-75°F), indicating warm conditions. However, September sees less precipitation, with 19 mm (0.7 in) over four days, while June records more rainfall at 27 mm (1.1 in) with just three rainy days. Both months maintain a high humidity level of 82%, contributing to a warm, tropical atmosphere. For a detailed look at June weather, you can check Waimanalo weather in June.
When comparing the weather in September and July, both months exhibit similar temperature ranges, with minimums around 23°C (75°F), averages at 26°C (79°F), and maximums peaking at 28°C (82°F to 83°F). However, September experiences slightly higher precipitation, with 19 mm (0.7 in) over 4 days, compared to July's 13 mm (0.5 in) over just 2 days. Additionally, humidity levels are fairly consistent in both months, with July at 83% and September at 82%. For more details on July weather, you can explore Waimanalo weather in July.
In September, the weather remains quite similar to August, with average temperatures consistently hovering around 26°C (79°F). However, September shows a slight decrease in minimum temperature, dropping to 23°C (75°F) compared to August's 24°C (76°F). While both months experience the same maximum temperature of 28°C (83°F), September sees slightly increased precipitation, totaling 19 mm (0.7 in) across 4 days, compared to 15 mm (0.6 in) over just 2 days in August. Humidity levels are comparable, with September at 82% and August slightly higher at 83%. For more detailed weather insights, check out Waimanalo weather in August.
September and October showcase similar temperature patterns, with both months featuring a minimum of 23°C (75°F), an average of 26°C (79°F), and a maximum of 28°C (83°F). However, October tends to be wetter, with precipitation totaling 45 mm (1.8 in) over 7 days compared to September's 19 mm (0.7 in) over just 4 days. Humidity remains fairly consistent, slightly decreasing from 82% in September to 81% in October. For a closer look at the October weather specifics in Waimanalo, you can visit Waimanalo weather in October.
In September, temperatures in Waimanalo are generally warmer, with a minimum of 23°C (75°F) and an average of 26°C (79°F), whereas November sees slightly cooler conditions, with a minimum of 21°C (70°F) and an average of 25°C (77°F). September experiences less precipitation, totaling 19 mm (0.7 in) over 4 days, while November has increased rainfall, amounting to 25 mm (1.0 in) over 6 days. Humidity levels remain fairly similar, with September at 82% and November slightly lower at 80%. For more detailed weather information, you can explore Waimanalo weather in November.
In September, the weather tends to be warmer, with average temperatures reaching around 26°C (79°F) and maximums hitting 28°C (83°F). This month experiences relatively low precipitation, with only 19 mm (0.7 in) and about 4 rainy days, accompanied by a humidity level of 82%. In contrast, December brings slightly cooler temperatures, with an average of 24°C (75°F) and maximums of 26°C (79°F). However, this month sees a significant increase in rainfall, totaling 63 mm (2.5 in) and occurring over 8 days, while humidity decreases marginally to 79%. For more detailed insights into December's weather, check out Waimanalo weather in December.
As September rolls into Waimanalo, the weather presents a delightful blend of warmth and humidity that sets it apart from the hotter summer months. With average temperatures settling around 26°C (79°F), it offers a comfortable respite, encouraging both locals and visitors to enjoy outdoor activities. While there is a slight uptick in precipitation, bringing about four days of light rain, this barely dampens the vibrant atmosphere. In fact, the humidity levels soar to 82%, wrapping the island in a tropical embrace that enhances its lush landscapes. For those keen on exploring more about the atmospheric nuances throughout the year, visit Waimanalo Climate.