Last updated: February 24, 2025
In September, Punalu'u experiences warm tropical weather, with average temperatures hovering around 26°C (80°F). The maximum daily highs can reach up to 32°C (89°F), while cooler nights bring temperatures down to a comfortable 21°C (71°F). This month is marked by an average precipitation of 26 mm (1.0 in), often spread across approximately 7 days, contributing to the region's lush landscape. Humidity remains high at 82%, enveloping the area in a moist atmosphere that enhances the tropical vibe. Whether you’re exploring the vibrant surroundings or enjoying a relaxing day at the beach, September in Punalu'u offers a delightful blend of warmth and refreshing showers.
In September, Punalu'u experiences warm and inviting temperatures, ideal for soaking in the sun. The month sees a minimum of around 21°C (71°F) and peaks at a comfortable 32°C (89°F), maintaining an average of about 26°C (80°F). This consistency in warmth mirrors the summer months, as temperatures remain high, indicating a gradual transition into the cooler autumn season. Compared to previous months, September's conditions offer a sweet spot of heat before the dip in temperatures begins in October. Whether you're lounging on the beach or exploring the lush surroundings, September in Punalu'u promises a delightful tropical atmosphere.
In September, Punalu'u experiences a modest average precipitation of 26 mm (1.0 in), accompanied by about 7 rainy days throughout the month. This marks a slight decrease from the wetter summer months of July and August, which recorded 28 mm (1.1 in) and 27 mm (1.0 in) respectively. As the year progresses into fall, September's rainfall continues to trend below the annual peak seen in December's 79 mm (3.1 in), yet remains a vital part of the region's climate. This gradual reduction in rainfall reflects the transition into drier months, setting the stage for the upcoming autumn season, where precipitation tends to pick up once more in October with 57 mm (2.2 in) forecasted.
September in Punalu'u sees humidity levels slightly tapering off to 82%, a minor decrease from the peak of 83% recorded during the summer months. This suggests a subtle transition as the island moves away from the peak heat of August. Overall, the trend in humidity showcases a gradual rise from 78% in January to a summer height of 83%, before a gentle decline towards the end of the year. The relatively stable humidity levels, fluctuating within a few percentage points, highlight Punalu'u’s characteristic tropical climate, ensuring a consistently moist atmosphere that is both refreshing and invigorating. As autumn approaches, residents can expect continued balance in humidity, making September a particularly pleasant time to experience the lush beauty of this coastal paradise.
In September, Punalu'u experiences a UV Index of 12, categorized as extreme, with a burn time of just 10 minutes. This month marks a slight decline from the preceding summer months, which boasted an index of 13, the highest measured throughout the year. The trend reflects a gradual tapering of UV intensity as the year progresses, yet caution is still paramount, particularly during this peak season. For sun-sensitive individuals and outdoor enthusiasts alike, being aware of this UV forecast is vital for skin protection and safe sun exposure practices. For more detailed information, visit Punalu'u UV Index.
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As summer wanes, September in Punalu'u continues to bask in abundant sunlight, offering an impressive 318 hours of sunshine. This marks a slight decline from the sun-soaked heights of July and August, which each enjoyed over 338 hours. Nevertheless, this month still radiates warmth and light, contributing to a rich lifestyle filled with outdoor adventures. Following the sunny peak of summer, September's hours slip into a steady rhythm, bridging the transition to autumn while remaining significantly brighter than earlier months. As the year progresses, October brings a predicted 300 hours, showcasing how Punalu'u maintains an impressive sunlit backdrop throughout the year, even as daylight begins to retreat.
In September, Punalu'u enjoys a 56% chance of sunny weather, which signals a noteworthy trend as summer transitions into fall. After basking in the sunniest months of May and August at 60%, the likelihood of sunshine dips slightly but remains robust when compared to the earlier months of the year. While January through July showcase varying sun probabilities, September stands out as part of a promising late-summer pattern, embodying the warmth and vibrant ambiance typical of Hawaiian weather. Overall, the sunny forecast for September continues to encourage outdoor adventures and beach outings.
As September arrives in Punalu'u, the daylight duration settles at 12 hours, mirroring the lengths enjoyed during both April and August. This month marks a transition point, where the sunlight begins to wane after the summer peak of 13 hours in May, June, and July. Following the vibrant summer days, September continues to offer ample daylight for outdoor activities, while hinting at the gradual shift towards shorter days ahead. This trend of diminishing daylight will persist into autumn, with October and November each landing at 11 hours—a gentle reminder of nature’s cyclical rhythms.
In September, Punalu'u experiences a refreshing average wind speed of 5.0 m/s (11 mph), mirroring the steady breeze of January and providing a gentle transition from the summer's slightly stronger gusts. After peaking at 5.8 m/s (13 mph) in July, the winds begin to moderate, setting the stage for the cooler months ahead. This consistent breeziness, flanked by August's and October's comparable speeds, suggests a climate that blends warmth with the invigorating touch of nature. As the year progresses toward the end, wind patterns show a gradual decline, with November witnessing a notable drop to 3.3 m/s (7 mph), heralding the calm embrace of winter.
The weather in Punalu'u 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 Punalu'u and find detailed weather information for every month.
In September, temperatures are generally warmer, with a minimum of 21°C (71°F) and an average of 26°C (80°F), reaching highs of 32°C (89°F). The humidity is relatively high at 82%, accompanied by about 26 mm (1.0 in) of precipitation over 7 days. In contrast, January sees cooler weather, with temperatures ranging from a minimum of 17°C (63°F) to an average of 23°C (73°F) and a maximum of 28°C (82°F). The rainfall slightly decreases to 22 mm (0.9 in) over 6 days, and humidity remains lower at 78%. For those interested in a more detailed examination, you can explore the conditions further at Punalu'u weather in January.
The weather in September is typically warmer compared to February, with average temperatures ranging from a minimum of 21°C (71°F) to a maximum of 32°C (89°F), while February sees slightly cooler temperatures with a minimum of 16°C (61°F) and a maximum of 28°C (82°F). September experiences less precipitation, about 26 mm (1.0 in) over 7 days, whereas February is wetter, receiving 76 mm (3.0 in) across 13 days. Despite the higher rainfall in February, humidity levels remain relatively similar, with September at 82% and February at 79%. For a closer look at Punalu'u's climate during this month, you can visit Punalu'u weather in February.
When comparing the weather in September and March, September generally offers warmer temperatures, with averages around 26°C (80°F) and maximums reaching 32°C (89°F), while March is cooler, with average temperatures of 22°C (73°F) and maxes of 29°C (84°F). Precipitation patterns also differ; September experiences less rain, totaling 26 mm (1.0 in) over about 7 days, whereas March sees a significantly higher rainfall amount of 77 mm (3.0 in) spread across 16 days. Humidity levels in September are slightly higher at 82%, compared to March's 78%. For more detailed insights, you can check Punalu'u weather in March.
In September, the weather tends to be warmer with average temperatures ranging from a minimum of 21°C (71°F) to a maximum of 32°C (89°F), while April sees slightly cooler averages, with minimums around 17°C (63°F) and maximums of 29°C (84°F). Additionally, September experiences less rainfall, totaling 26 mm (1.0 in) over about 7 days, compared to April's 39 mm (1.5 in) over 11 days. Both months have high humidity levels, but September edges out with a slightly higher average of 82%, compared to April's 81%. For more detailed insights about the weather in April, you can check Punalu'u weather in April.
In comparing the weather of September and May, September typically features slightly warmer temperatures, with a minimum of 21°C (71°F) and an average of 26°C (80°F), while May starts off a bit cooler, with a minimum of 18°C (65°F) and an average of 24°C (76°F). However, May experiences greater precipitation, totaling 38 mm (1.5 in) over 12 days, compared to September's 26 mm (1.0 in) over 7 days. Both months share the same humidity level of 82%, keeping the air feeling consistently muggy. For more detailed insights on the weather during this time, you can check Punalu'u weather in May.
In comparing the weather of September and June, both months exhibit similar temperature ranges, with September slightly warmer on average. September's temperatures range from a minimum of 21°C (71°F) to a maximum of 32°C (89°F), while June has temperatures from 21°C (70°F) to 31°C (88°F). Precipitation is notably higher in June, with 51 mm (2.0 in) over 9 days compared to September's 26 mm (1.0 in) over 7 days. Despite this difference in rainfall, both months share a consistent humidity level of 82%, contributing to the tropical climate. For more details, you can view Punalu'u weather in June.
When comparing the weather in September to that of July, we see only slight differences. In September, the daily temperatures range from a minimum of 21°C (71°F) to a maximum of 32°C (89°F), averaging around 26°C (80°F). July, on the other hand, has a slightly higher minimum temperature of 22°C (71°F) and a maximum of 31°C (88°F), with the same average temperature of 26°C (79°F). While both months experience high humidity levels, September sees a bit less precipitation, with 26 mm (1.0 in) over 7 days compared to July’s 28 mm (1.1 in) over 11 days. For more detailed insights on July’s weather, you can visit Punalu'u weather in July.
In comparing the weather of September and August, we find that both months experience similar temperature ranges, with minimums at 21°C (71°F), averages of 26°C (80°F), and maximums reaching 32°C (89°F). However, September sees slightly less precipitation at 26 mm (1.0 in) over 7 days, compared to August's 27 mm (1.0 in) over 8 days. Humidity levels are also comparable, with September at 82% and August at 83%. For more detailed insights on August weather, you can refer to this link: Punalu'u weather in August.
In comparing the weather between September and October, we see only slight differences in temperature. September features a minimum temperature of 21°C (71°F) and an average of 26°C (80°F), with a maximum of 32°C (89°F). In October, the minimum remains the same at 21°C (69°F), but the average temperature drops slightly to 26°C (78°F) and the maximum reaches 31°C (88°F). Precipitation in October also increases, with 57 mm (2.2 in) over 11 days, compared to September's 26 mm (1.0 in) over 7 days. Humidity remains consistent, with September at 82% and October at 81%. For more details on specific weather patterns, check out Punalu'u weather in October.
In September, temperatures are generally warmer, with an average of 26°C (80°F), peaking at 32°C (89°F), while November sees slightly cooler conditions with an average of 24°C (76°F) and a maximum of 30°C (86°F). Both months experience high humidity, but September is notably more humid at 82%, compared to November's 80%. Precipitation also increases in November, with 32 mm (1.3 in) falling over 12 days, compared to 26 mm (1.0 in) over 7 days in September. For more detailed insights on weather patterns, check out Punalu'u weather in November.
In September, the weather tends to be warmer, with average temperatures ranging from 21°C (71°F) at night to a high of 32°C (89°F) during the day, along with a relatively low precipitation of 26 mm (1.0 in) spread over 7 days and high humidity at 82%. In contrast, December brings cooler temperatures, with averages of 16°C (61°F) at night and a maximum of 28°C (83°F) during the day. However, December is significantly wetter, with 79 mm (3.1 in) of rain occurring over 12 days, while humidity slightly decreases to 79%. For more details on December weather, you can visit Punalu'u weather in December.
As September rolls in, Punalu'u experiences a delightful transition, marked by warm temperatures and a touch of humidity. The average temperature is pleasantly moderate, providing a perfect backdrop for outdoor activities. While rainfall is not uncommon, with a few days of light precipitation, the overall climate remains inviting compared to the more intense rainy months that follow. This unique blend of warmth and mild showers makes September a fantastic time to explore the area and enjoy its natural beauty. For more insights on how the weather varies throughout the year, check out Punalu'u Climate.