Last updated: February 24, 2025
September in Po'ipu, United States, offers a delightful tropical experience characterized by warm temperatures and moderate humidity. With maximum temperatures reaching 28°C (82°F) and an average of 26°C (79°F), visitors can enjoy pleasant days complemented by the soothing ocean breeze. The minimum temperature hovers around 24°C (75°F), ensuring comfortable evenings. Although the month sees 26 mm (1.0 in) of precipitation over approximately 6 days, this rain often arrives as brief, refreshing showers, giving way to sunny skies. Humidity levels, around 82%, contribute to the lush, vibrant scenery that enhances the allure of this coastal paradise. Whether you’re lounging on the beach or exploring local attractions, September in Po'ipu promises a warm and inviting tropical getaway.
In September, Po'ipu basks in pleasantly warm temperatures, making it an ideal time for outdoor adventures. With a minimum of 24°C (75°F) and a comfortable average of 26°C (79°F), days are filled with sunshine. The maximum temperature peaks at 28°C (82°F), maintaining the summer vibe as the month draws to a close. This trend of rising warmth peaks in the summer months, with September maintaining the warmth experienced in August, continuing a delightful pattern of consistent tropical temperatures. Overall, the mild conditions create a perfect backdrop for enjoying the beautiful beaches and lush landscapes that the area is known for.
In September, Po'ipu experiences a consistent rainfall pattern, recording 26 mm (1.0 in) of precipitation over six days. This amount mirrors the previous month's rainfall, indicating a steady trend in the region's late-summer climate. As the transition towards fall begins, the weather remains relatively mild with occasional showers, aligning with the generally humid conditions typical for this time of year. Looking ahead, October usually brings an increase in precipitation, but for September, the rainfall contributes to lush landscapes, making it a picturesque time to visit.
In September, Po'ipu experiences a comfortable humidity level of 82%, reflecting a slight dip from the peak humidity months of July and August, both at 83%. Generally, throughout the year, humidity in this coastal paradise demonstrates a gentle upward trend from the early months, peaking in the summer before slightly declining into the fall. As we transition into October, humidity levels drop slightly to 81%, continuing a pattern of moderate moisture that characterizes the Hawaiian climate. This consistency not only contributes to the lush landscapes but also makes Po'ipu a haven for those who appreciate a warm, tropical atmosphere with relatively stable humidity year-round.
In September, Po'ipu continues to experience an extreme UV Index of 12, with a burn time of just 10 minutes. This marks a slight decline from the peak UV Index of 13 seen in the previous summer months of July and August. As the season transitions into autumn, the UV levels remain significant, underscoring the need for sun protection amidst the tropical Hawaiian backdrop. Observing the trends throughout the year, the UV Index consistently peaks during the middle months, suggesting that visitors and residents alike should remain vigilant about sun safety during this time. For more detailed information, please visit Po'ipu UV Index.
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As summer wanes, September in Po'ipu continues to bask in a generous 314 hours of sunshine, showcasing a delightful transition from the sun-soaked peak of July. This month, while slightly cooler than its summer predecessors, still benefits from a commendable amount of light, surpassing the spring months and gently ushering in the fall. The trend of abundant sunlight peaks during mid-year, with July standing out at 348 hours, while September aptly reflects the lingering warmth of summer before settling into the softer, golden light of autumn. The consistent sunshine throughout the year makes Po'ipu a cherished destination, perfectly complementing the relaxed island vibe and inviting visitors to enjoy outdoor adventures or simply soak up the last rays of summer.
In Po'ipu, September shines with a 64% chance of sunny weather, making it a delightful time to bask in the sun. This month sits comfortably among the warmer summer months, maintaining a consistent likelihood of clear skies that peaks in August at 70%. As the season transitions into autumn, the probability remains favorable, surpassing both the spring months and matching closely with October's 66% likelihood. Overall, September offers a sweet spot for sun-seekers as it encapsulates the best of late summer warmth while signaling the slow return to milder weather.
As September unfolds in Po'ipu, residents can enjoy 12 hours of daylight, marking a slight decline from the heights of summer where daylight peaked at 13 hours in June and July. This month signals a transition as days begin to shorten, reflecting a gradual shift from the sun-drenched summer months toward the cooler autumn season. Notably, the daylight duration remains stable, similar to April and May, showcasing the region's consistent tropical climate. As we look ahead to October, expect the daylight to taper further, maintaining a rhythmic ebb and flow that characterizes the Hawaiian experience throughout the year.
As September unfolds in Po'ipu, the refreshing trade winds continue to grace the area with an average wind speed of 6.5 m/s (14 mph). This gentle breeze is a delightful transition from the summer months, maintaining a steady flow that peaks in July at 7.2 m/s (16 mph) and begins a gradual descent as the year draws to a close. The winds remain relatively consistent throughout the fall, hovering around 6.4 m/s (14 mph) in both October and January. Notably, September sits comfortably within this range, showing a slight increase from August's 6.2 m/s (14 mph), hinting at a lingering warmth and inviting outdoor activities. As the year progresses, a noticeable dip occurs with November’s 4.3 m/s (10 mph), but for now, September's breeze promises invigorating days ahead.
The weather in Po'ipu 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 Po'ipu and find detailed weather information for every month.
In September, the weather tends to be warmer, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F), while January sees slightly cooler temperatures with an average range from a minimum of 20°C (68°F) to a maximum of 25°C (77°F). Both months experience similar levels of precipitation, with September recording 26 mm (1.0 in) and January a close 25 mm (1.0 in), over about six days of rain. Interestingly, September is slightly more humid at 82%, in contrast to January's 78%. For a more in-depth look at January weather, check out Po'ipu weather in January.
In September, the weather tends to be warmer, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F) and an overall average of 26°C (79°F). The month sees about 26 mm (1.0 in) of precipitation spread over approximately 6 days, contributing to a relatively high humidity level of 82%.
In contrast, February offers cooler temperatures, with a minimum of 17°C (63°F) and a maximum of 24°C (76°F), leading to an average temperature of 22°C (72°F). This month experiences more rainfall, totaling about 60 mm (2.3 in) over around 10 days, while the humidity remains slightly lower at 79%. For more specific insights on February weather, you can refer to Po'ipu weather in February.
September typically brings warmer weather, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F), alongside relatively low precipitation at 26 mm (1.0 in) over about 6 days. In contrast, March offers cooler temperatures, with averages between 19°C (66°F) and 25°C (77°F), but it experiences significantly higher precipitation at 113 mm (4.5 in) across 13 days, leading to slightly lower humidity levels at 78%. This seasonal shift marks September as a warmer and drier month compared to the wetter and cooler climate of March. For more detailed insights, check out Po'ipu weather in March.
In September, the weather tends to be warmer compared to April, with average temperatures reaching around 26°C (79°F), while April sees a cooler average of 23°C (74°F). Additionally, September experiences slightly less precipitation, with 26 mm (1.0 in) over approximately 6 days, in contrast to April's 34 mm (1.3 in) over 7 days. Humidity levels are similar in both months, hovering around 81-82%. For a detailed look at April weather, check out Po'ipu weather in April.
September typically experiences slightly warmer temperatures than May, with average highs of 28°C (82°F) compared to May’s maximum of 26°C (79°F). The humidity remains constant for both months at 82%, contributing to a warm, tropical feel. However, September sees a bit more rainfall, averaging 26 mm over six days, while May has slightly less precipitation at 21 mm over five days. For a detailed look at May weather, you can check Po'ipu weather in May.
In comparing the weather of September and June, both months exhibit relatively warm temperatures, with September having a slightly higher average temperature of 26°C (79°F) compared to June's 25°C (77°F). However, June experiences more precipitation, totaling 56 mm (2.2 in) over 9 days, while September sees only 26 mm (1.0 in) spread over 6 days. Both months share the same humidity level of 82%, providing a similar tropical feel, but the additional rainfall in June may contribute to a slightly more lush landscape. For a detailed look at the weather patterns during June, you can visit Po'ipu weather in June.
In comparing the weather between September and July, both months exhibit similar temperature ranges, with September having a minimum temperature of 24°C (75°F) and an average of 26°C (79°F), while July's minimum is slightly lower at 23°C (74°F) with an average of 25°C (78°F). Both months reach a maximum of 28°C (82°F). However, September tends to be slightly drier, with 26 mm (1.0 in) of precipitation over 6 days, compared to July’s 25 mm (1.0 in) spread over 9 days. Humidity levels are almost identical, with September at 82% and July at 83%. For more detailed insights into July weather, you can check Po'ipu weather in July.
In comparing the weather of September and August, we find that both months exhibit striking similarities in temperature, with minimums averaging 24°C (75°F), maximums reaching 28°C (82°F), and an average temperature of 26°C (79°F) during each month. Precipitation levels are consistent as well, with both months recording 26 mm (1.0 in) of rain over the course of 6 days. However, September experiences slightly lower humidity at 82% compared to August’s 83%. For more specific details about August weather in Po'ipu, you can check out Po'ipu weather in August.
In comparing the weather of September and October, September generally boasts slightly warmer temperatures, with a minimum of 24°C (75°F) and an average of 26°C (79°F), while October sees a minimum of 23°C (73°F) and an average of 25°C (78°F). Precipitation increases significantly in October, with 64 mm (2.5 in) over 11 days compared to September’s 26 mm (1.0 in) over 6 days, indicating a wetter month. Humidity remains relatively stable, with September experiencing 82% and October slightly lower at 81%. For more detailed insights into October's weather, you can check out Po'ipu weather in October.
In comparing the weather between September and November, we observe a slight decrease in temperatures as November features a minimum of 22°C (71°F) and an average of 25°C (77°F), compared to September's minimum of 24°C (75°F) and an average of 26°C (79°F). Both months are relatively humid, with September at 82% and November at 80%. However, November experiences more precipitation, totaling 35 mm (1.4 in) over 10 days, whereas September sees 26 mm (1.0 in) over just 6 days. For a closer look at conditions, you can explore Po'ipu weather in November.
In September, temperatures are typically warmer, with minimums around 24°C (75°F) and maximums reaching up to 28°C (82°F), while December sees slightly cooler temperatures ranging from a minimum of 19°C (66°F) to a maximum of 26°C (79°F). September experiences less precipitation, averaging 26 mm (1.0 in) over about six days, compared to December's 77 mm (3.1 in) spread over eleven days, making it a wetter month. Additionally, humidity remains fairly high in both months, with September at 82% and December slightly lower at 79%. For more detailed information on December weather, you can check Po'ipu weather in December.
As September unfolds in Po'ipu, visitors can expect mild and inviting weather that marks a transition from summer to fall. The temperatures remain pleasantly warm, usually hovering around 26°C (79°F), making it an ideal time for outdoor adventures. While the skies are mostly clear, a few gentle showers, averaging 26 mm, can refresh the landscape, contributing to the island’s lush greenery. The humidity level at 82% may feel a bit higher than the dryer summer months, but the overall charm of Po'ipu remains enticing. For more detailed insights into the seasonal trends, check out Po'ipu Climate.