Last updated: February 24, 2025
In September, Waikoloa, United States experiences a warm and humid climate characterized by an average temperature of 23°C (74°F). Daily highs can reach a pleasant 30°C (86°F), while nights cool to around 18°C (64°F). Rainfall is a prominent feature this month, with total precipitation measuring 222 mm (8.8 in) spread across 28 days, creating a lush and vibrant landscape. The humidity levels hover around 82%, making for a tropical atmosphere that enriches both the air and the scenery, ideal for visitors seeking natural beauty and adventure.
In September, Waikoloa experiences warm and inviting temperatures, characterized by a minimum of 18°C (64°F) and a pleasant average of 23°C (74°F). The month sees a peak with a maximum temperature reaching 30°C (86°F), marking it as one of the warmer times of the year. This trend of rising temperatures from the slightly cooler early months is evident, as September marks a transition into the more summer-like conditions seen in August and leads into October, which retains comparable highs. With consistent warmth, this month is an ideal time for beachgoers and outdoor enthusiasts to soak up the sun in this tropical paradise.
September in Waikoloa brings a notable shift in precipitation patterns, with 222 mm (8.8 in) of rain recorded over 28 days—a decrease from the torrential rains of August. While still significant, September’s totals signal the end of the peak rainy season, following a substantial 369 mm (14.5 in) last month. The month maintains a balance, as rainfall decreases while the number of rainy days remains relatively high, hinting at more intermittent showers rather than relentless downpours. This transition sets the stage for October, where precipitation further tapers to 196 mm (7.7 in), continuing the trend toward drier conditions as the region shifts into fall. Overall, September serves as a bridge between the lush intensity of summer and the more moderate rains of autumn, inviting a welcome change for the local environment.
In September, Waikoloa experiences a humidity level of 82%, slightly decreasing from the peak of 84% observed in August. This trend reflects the overall pattern of the humid months leading into the fall, where humidity remains relatively stable throughout the year. From January's baseline of 79%, humidity gradually rises to its summer maximum in August, before starting to retract in the subsequent months. Overall, Waikoloa's humidity showcases a distinct seasonal ebb and flow, contributing to the region's lush, vibrant environment.
In September, Waikoloa continues to experience a highly intense UV Index of 13, keeping it in the extreme exposure category. This trend reflects the region's consistent challenge with elevated UV levels, particularly from February through August, where values peak at 14. As summer transitions to fall, residents and visitors alike must remain vigilant, with a burn time of just 10 minutes against the sun's powerful rays. As the year progresses, UV Index levels gradually decline, but even in September, precautions are essential to protect against potential skin damage. For more detailed information, check out Waikoloa UV Index.
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In September, Waikoloa basks in 311 hours of glorious sunshine, making it a delightful time for visitors and locals alike. This month showcases a slight dip from the summer peak, where July shines the brightest with 343 hours. However, the warmth remains abundant as September transitions into a more mellow fall. The trends illustrate a pattern of increasing daylight from the year's start, reaching a summer high in July before gently tapering off into October's 295 hours. This gradual decrease not only highlights the end of summer but also invites opportunities for enjoyable outdoor activities under the Hawaiian sun.
In Waikoloa, the likelihood of sunny weather in September stands at 47%, positioning it favorably among the months of the year. As summer transitions into fall, this percentage reflects a rebound from the cooler months of June and July, where sunny chances dipped to 38% and 40%, respectively. Interestingly, the percentage of sunny days in September mirrors that of March, suggesting a more consistent weather pattern as the island shifts towards the October peak of 50%. This trend indicates that while September may not boast the highest sunshine likelihood, it certainly maintains a solid potential for bright, enjoyable days amidst its coastal beauty.
In Waikoloa, United States, the trend of daylight duration throughout the year reveals a harmonious dance with the changing seasons. As September rolls in, the daylight stretches to a pleasant 12 hours, mirroring the months of April and August. This slight increase from the summer peak of 13 hours in May, June, and July suggests a gradual transition, gently easing into the shorter days of fall. Notably, it indicates that after the summer solstice, daylight begins to wane, yet September still holds onto that generous light, making it an ideal month for outdoor adventures before the days grow shorter and more mellow.
In Waikoloa, September brings mild breezes, with an average wind speed of 2.7 m/s (6 mph), matching the gentle gusts of both June and August. This consistent wind pattern suggests a transition from the summer's peak breezes in July at 3.0 m/s (7 mph), leading into a slightly calmer October. Overall, the wind speeds from spring to fall reveal a gradual increase, peaking mid-summer and then tapering off towards the end of the year. The delightful September winds invite outdoor enthusiasts to enjoy the stunning landscapes of Waikoloa while finding respite in the refreshing air.
The weather in Waikoloa 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 Waikoloa and find detailed weather information for every month.
September and January showcase distinct weather patterns. In September, temperatures are warmer with a minimum of 18°C (64°F) and an average of 23°C (74°F), peaking at 30°C (86°F). Conversely, January experiences cooler weather, with a minimum of 13°C (56°F) and an average of 20°C (68°F), reaching a maximum of 27°C (80°F). Precipitation is higher in September, with 222 mm (8.8 in) over 28 days, compared to January's 112 mm (4.4 in) spread over 19 days. Humidity levels are also slightly higher in September at 82%, as opposed to January's 79%. For more detailed information, you can check Waikoloa weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a minimum of 18°C (64°F) to a maximum of 30°C (86°F), with an average of 23°C (74°F). The month is marked by frequent rainfall, totaling 222 mm (8.8 in) over 28 days, and a high humidity level of 82%. In contrast, February experiences milder temperatures, with a minimum of 12°C (53°F) and a maximum of 26°C (80°F), along with an average of 20°C (67°F). Precipitation decreases to 140 mm (5.5 in) over 19 days, and humidity slightly drops to 79%. For a more detailed look at February weather, you can check Waikoloa weather in February.
September typically boasts warmer temperatures compared to March, with minimums around 18°C (64°F) and maximums reaching 30°C (86°F), while March's temperatures range from a minimum of 14°C (57°F) to a maximum of 27°C (81°F). Additionally, September experiences significantly higher precipitation levels, accumulating 222 mm (8.8 in) over 28 days, in contrast to March's 117 mm (4.6 in) over 22 days. The humidity is also higher in September at 82%, compared to 77% in March. For more details on weather patterns, you can check Waikoloa weather in March.
In comparing the weather of September and April, September tends to be warmer, with average temperatures reaching 23°C (74°F) compared to April's 21°C (70°F). However, September also experiences more substantial rainfall, totaling 222 mm (8.8 in) over 28 days, while April sees 182 mm (7.2 in) over 27 days. The humidity is slightly higher in September at 82%, compared to April's 80%. For more details on the climate during this time, you can check Waikoloa weather in April.
In September, the weather tends to be warmer with temperatures ranging from a minimum of 18°C (64°F) to a maximum of 30°C (86°F), averaging around 23°C (74°F). The month often sees significant rainfall, with 222 mm (8.8 in) of precipitation spread over 28 days and a humidity level of 82%. In contrast, May offers slightly cooler temperatures, with a range of 14°C (58°F) to 28°C (83°F) and an average of 22°C (71°F). While May experiences a bit more rainfall, totaling 252 mm (9.9 in) over the same number of days, the humidity is marginally lower at 80%. For a deeper dive into conditions during this month, check out Waikoloa weather in May.
When comparing the weather in September and June, both months exhibit similar average temperatures, with September experiencing a minimum of 18°C (64°F) and an average of 23°C (74°F), while June has a slightly lower minimum of 17°C (63°F) and the same average. However, June tends to feature a bit more precipitation, totaling 263 mm (10.4 in) over 29 days compared to September's 222 mm (8.8 in) over 28 days. Humidity levels remain consistent at 82% for both months, contributing to the tropical feel. For more detailed insights on June weather in Waikoloa, you can check Waikoloa weather in June.
In comparing the weather of September and July, we find some notable similarities and differences. Both months experience a minimum temperature around 18°C (64°F), but September's average peak reaches a slightly higher maximum of 30°C (86°F), compared to July's 29°C (84°F). However, July sees more rainfall with 286 mm (11.3 in) over 30 days, while September has a reduced total precipitation of 222 mm (8.8 in) across 28 days. Humidity levels are quite similar, with September at 82% and July at 83%. For more details on July weather, you can visit this link: Waikoloa weather in July.
In comparing the weather of September and August, we observe some notable differences. Both months share similar minimum and average temperatures, but September slightly edges out August with a maximum temperature of 30°C (86°F) compared to August's 29°C (85°F). However, September experiences significantly less precipitation, with 222 mm (8.8 in) over 28 days, compared to August’s 369 mm (14.5 in) over 30 days. Additionally, humidity levels remain relatively high in both months, though September is slightly lower at 82% compared to 84% in August. For more details on August weather, you can refer to Waikoloa weather in August.
In comparing the weather of September and October, it is clear that temperatures remain relatively stable across both months, with average highs reaching 30°C (86°F) and average lows of 18°C (64°F) in September and 16°C (62°F) in October. However, October experiences slightly less precipitation, accumulating 196 mm (7.7 in) over 27 days compared to the 222 mm (8.8 in) recorded over 28 days in September. Humidity levels are quite consistent, with September at 82% and October just a touch higher at 83%. For more detailed weather insights, you can visit Waikoloa weather in October.
In September, the weather tends to be warmer with average temperatures reaching 23°C (74°F) and maximums peaking at 30°C (86°F). This month also experiences significant rainfall, totaling 222 mm (8.8 in) over 28 days, contributing to a high humidity level of 82%.
In contrast, November sees slightly cooler temperatures with an average of 22°C (71°F) and maximums up to 29°C (84°F). Precipitation is reduced to 127 mm (5.0 in) across 22 days, while humidity remains fairly consistent at 83%. For more specific details about weather conditions in Waikoloa during November, you can check Waikoloa weather in November.
In comparing the weather between September and December, we find notable differences in temperature and precipitation. September boasts a minimum temperature of 18°C (64°F) and an average high of 30°C (86°F), while December sees slightly cooler temperatures with a minimum of 13°C (56°F) and a maximum of 28°C (82°F). Precipitation levels also vary; September experiences 222 mm (8.8 in) over 28 days, compared to December's 179 mm (7.1 in) over 22 days. Despite these shifts, humidity remains relatively stable, with September at 82% and December slightly lower at 81%. For more detailed insights, you can check out Waikoloa weather in December.
As September settles into Waikoloa, visitors can expect a delightful blend of warm temperatures and high humidity, making it a serene retreat for sun-seekers. While the maximum temperatures hover around 30°C, the overall climate carries a slight chill in the evenings, offering respite from the daytime warmth. However, September stands out with its considerable rainfall, featuring frequent showers that sweep across the landscape, contributing to a lush environment. This month's weather, characterized by increased precipitation and high humidity, creates a unique tropical ambiance that differs markedly from the drier months preceding it. For those interested in understanding the broader weather patterns of this beautiful locale, check out Waikoloa Climate.