Last updated: February 24, 2025
Experience the allure of Hawaiian beaches in September, where the warm temperatures typically reach a maximum of 30°C (86°F) and hover around a comfortable average of 25°C (77°F). Visitors can enjoy the soft ocean breezes, as the minimum temperature enjoys a pleasant low of 20°C (68°F). While the month brings a moderate precipitation amount of 93 mm (3.7 in) over 22 days, the lush landscapes and vibrant sunsets more than compensate for the occasional rain. With humidity levels around 82%, the air is filled with tropical allure, making September an enticing time to visit Hawaii's stunning shores.
In September, the Hawaiian beaches bask in warm and inviting temperatures, with a minimum of 20°C (68°F) and an average of 25°C (77°F). This is a moment where the summer heat lingers just a bit longer before the cooler months set in. With daytime highs reaching 30°C (86°F), beachgoers revel in ideal conditions for swimming, sunbathing, and surfing. The gradual rise in temperatures from the earlier months culminates here, as September mirrors the warmth of August while retaining the ocean's allure. As the autumn approaches, the gentle trade winds keep the air refreshed, making it a perfect paradise for those looking to escape the chill elsewhere.
As summer yields to fall in Hawaii, September showcases a notable decline in precipitation, with an average of 93 mm (3.7 in) of rainfall over 22 days. This is a shift from the heavier downpours seen in August, which recorded 188 mm (7.4 in), emphasizing the transitional nature of early autumn. The data reflects a gradual decrease in precipitation amounts, suggesting that while the islands remain lush and vibrant, the pace of rainfall begins to slow, paving the way for clearer skies and moderated humidity as October approaches. This reduction in rainfall not only enhances beachgoers' enjoyment but also hints at the onset of drier conditions that characterize the latter part of the year.
As summer transitions into fall, September in the Hawaiian beaches retains a comfortable humidity level of 82%. This modest dip from August's peak of 84% indicates a slight easing in the tropical climate, while still reflecting the overall trend of higher humidity that builds throughout the summer months. Starting from January's consistent 79%, the humidity gradually rises, hitting its peak in August. Following this slight decline in September, the humidity remains relatively stable in the upcoming months. This pattern highlights the enchanting allure of Hawaii’s beaches, where the warmth lingers, inviting visitors to enjoy the islands' beauty even as the seasons shift.
In September, Hawaiian Beaches maintain a UV Index of 13, indicating an extreme exposure category with a burn time of just 10 minutes. This month's UV levels are consistent with the high readings seen throughout the summer months of July and August, which also recorded a peak index of 14. Notably, the UV Index begins to gradually decline in October, yet it remains well above the moderate range. Overall, this trend highlights the importance of sun safety as visitors enjoy the beautiful beaches of Hawaii. For more information, visit Hawaiian Beaches UV Index.
UV Risk Categories
As summer gives way to autumn, September in Hawaiian beaches offers a delightful transition, maintaining an impressive 305 hours of sunshine. While the days begin to shorten slightly, the sunshine remains abundant, just a tad below the summer peak of 339 hours in July. This trend showcases the lingering warmth and vibrant skies of the season, inviting beachgoers to revel in the sun-drenched scenery. Following the bustling summer months of June and July, September's golden rays provide a perfect balance of warmth and serenity, making it an ideal time to explore the stunning coastline before the dip in sunlight that the fall months bring.
September in Hawaiian Beaches sees a 40% chance of sunny weather, making it a delightful time for beachgoers. As the summer months wind down, the likelihood of sunny days shifts from the higher peaks in February (48%) and August (44%) to a more moderate level. This steady chance of sunshine in September reflects a pattern where the sunniest months tend to occur earlier in the year, while the fall gradually introduces a mix of cloudier days. With autumn approaching, visitors can enjoy a blend of warm temperatures and pleasant sunshine, offering an ideal backdrop for outdoor adventures. Whether you're seeking to soak up the sun or dive into the ocean, September presents a balanced opportunity for both relaxation and exploration.
In September, Hawaiian beaches bask in a delightful 12 hours of daylight, offering a perfect backdrop for sun-soaked adventures. This month sees a slight decline from the peak 13 hours experienced in the summer months of May through August. As the seasons shift towards autumn, daylight gradually decreases, mirroring the trend observed from January’s consistent 11 hours to October’s return to 11 hours. This pattern shows that while September retains the warmth of summer, it also begins the gentle transition into the shorter days ahead, inviting both locals and travelers to revel in the golden sunsets before the daylight hours dwindle further.
As September arrives in the Hawaiian beaches, the winds begin to whisper a gentle melody, with an average speed of 3.6 m/s (8 mph). This slight decrease from the summer months showcases a transition as the peak winds of July and August, which reached 4.0 m/s (9 mph), mellow into a more laid-back breeze. Interestingly, September maintains the same average wind speed as April and May, creating a perfect backdrop for leisurely beach days and calming sunsets. As the winds soften, visitors can enjoy the idyllic coastal scenery, making it an ideal time to embrace the serene vibes of Hawaii before the autumnal whispers take hold in October.
The weather in Hawaiian Beaches 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 Hawaiian Beaches and find detailed weather information for every month.
In September, the weather tends to be warmer with average temperatures ranging from a minimum of 20°C (68°F) to a maximum of 30°C (86°F), complemented by high humidity levels of 82%. This month receives a fair amount of rainfall, accumulating about 93 mm (3.7 in) over 22 days. In contrast, January experiences slightly cooler temperatures with a minimum of 17°C (62°F) and a maximum of 27°C (81°F), while maintaining a lower average of 22°C (71°F). Precipitation in January is higher, totaling 118 mm (4.7 in) across 16 days, but with a lower humidity level of 79%. For those interested in specific weather details, Hawaiian Beaches weather in January provides further insights.
When comparing the weather in September and February, September tends to be warmer overall, with average temperatures ranging from a minimum of 20°C (68°F) to a maximum of 30°C (86°F), while February features cooler temperatures, with averages between 16°C (61°F) and 27°C (81°F). In terms of precipitation, February is significantly wetter, receiving 209 mm (8.2 in) over about 20 days, compared to September's 93 mm (3.7 in) over 22 days. Despite the higher rainfall in February, humidity levels are relatively similar, with September having a slight edge at 82% compared to February’s 79%. For a closer look at February weather specifics, check out Hawaiian Beaches weather in February.
September typically enjoys warmer temperatures compared to March, with average highs reaching 30°C (86°F) and lows around 20°C (68°F). In contrast, March features slightly cooler temperatures, with averages of 27°C (81°F) for highs and 17°C (62°F) for lows. Although September experiences less precipitation at 93 mm (3.7 in) over 22 days, March is wetter, receiving 154 mm (6.0 in) over the same number of days. Both months maintain high humidity levels, but September stands out with an average of 82%, while March has a slightly lower average of 77%. For a detailed look at the weather conditions in March, visit Hawaiian Beaches weather in March.
In September, the weather tends to be warm, with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 30°C (86°F) and an average temperature of 25°C (77°F). The month experiences a fair amount of rainfall, totaling 93 mm (3.7 in) over 22 days, and the humidity is relatively high at 82%.
In contrast, April offers slightly cooler temperatures, with a minimum of 17°C (64°F), an average of 22°C (73°F), and a maximum of 28°C (82°F). Rainfall in April is a bit higher, with 117 mm (4.6 in) spread over 23 days, while humidity remains similar at 80%. For more specifics on April weather, you can check Hawaiian Beaches weather in April.
Overall, both months are characterized by warm temperatures and considerable humidity, but September is generally warmer with slightly less precipitation compared to April.
When comparing the weather in September and May, we observe that September tends to be slightly warmer, with average temperatures ranging from 20°C (68°F) to a maximum of 30°C (86°F), while May has a cooler range, with averages from 18°C (65°F) to a maximum of 28°C (83°F). Additionally, September experiences 93 mm (3.7 in) of precipitation over 22 days, making it a somewhat drier month compared to May's 127 mm (5.0 in) over 24 days of rain. Humidity levels are relatively similar, with September at 82% and May at 80%. For those interested in the nuances of May weather, more details can be found at Hawaiian Beaches weather in May.
When comparing the weather in September and June, we see some notable similarities and differences. Both months experience high humidity levels at 82%, creating a warm and tropical atmosphere. September has slightly higher temperatures, with an average of 25°C (77°F) and a maximum of 30°C (86°F), compared to June's average of 24°C (75°F) and a maximum of 28°C (84°F). Precipitation levels are relatively similar, with September receiving 93 mm (3.7 in) over 22 days and June slightly lower at 90 mm (3.5 in) over 25 days. For those interested in detailed forecasts and more information, check out Hawaiian Beaches weather in June.
In September, the weather is characterized by slightly warmer temperatures, with average highs reaching up to 30°C (86°F), while July boasts a max temperature of 31°C (88°F). Both months experience similar minimum temperatures of 20°C (68°F). Precipitation levels are quite comparable, with September receiving 93 mm (3.7 in) over 22 days and July slightly higher at 97 mm (3.8 in) over 26 days. Humidity remains relatively consistent between the two months, with September at 82% and July at 83%. For more information on the weather during July, you can check Hawaiian Beaches weather in July.
In comparing the weather of September and August, we find that both months share similar temperature ranges, with minimums at around 20°C (68°F), average temperatures of 25°C (77°F), and maximums reaching 30°C (86°F). However, September experiences significantly less rainfall, with only 93 mm (3.7 in) of precipitation over 22 days, compared to August's 188 mm (7.4 in) across 25 days. Humidity levels also slightly decrease in September to 82%, down from August's 84%. For more detailed insights on August weather, you can visit Hawaiian Beaches weather in August.
In September, the weather typically features a minimum temperature of 20°C (68°F) and an average of 25°C (77°F), with a maximum reaching up to 30°C (86°F). The month sees an average precipitation of 93 mm (3.7 in) over 22 days, accompanied by high humidity levels at 82%. In contrast, October experiences slightly cooler temperatures, with a minimum of 19°C (67°F) and an average of 24°C (76°F), while still maintaining a maximum of 30°C (86°F). However, precipitation increases to 137 mm (5.4 in) across 20 days, and humidity rises marginally to 83%. For more details on the weather in Hawaiian Beaches during this time, check out Hawaiian Beaches weather in October.
In September, the weather tends to be warmer, with average temperatures around 25°C (77°F) and a maximum reaching up to 30°C (86°F), compared to November's slightly cooler average of 23°C (74°F) with a maximum of 29°C (84°F). Both months experience high humidity, with September at 82% and November close behind at 83%. However, November receives slightly more precipitation, totaling 108 mm (4.2 in) over 19 days, compared to September's 93 mm (3.7 in) over 22 days. This increase in rainfall in November suggests a shift towards a wetter climate as the year progresses. For a more detailed look at the weather trends in November, check out Hawaiian Beaches weather in November.
In September, the weather is generally warmer, with average temperatures around 25°C (77°F) and maximum highs reaching 30°C (86°F). The month experiences considerable rainfall, with a total precipitation of 93 mm (3.7 in) spread over 22 days and a humidity level of 82%. In contrast, December brings cooler temperatures, with an average of 22°C (72°F) and maximums of 27°C (82°F). However, it experiences more rainfall, totaling 180 mm (7.1 in) over the same number of days, while humidity remains slightly lower at 81%. For further details, you can check Hawaiian Beaches weather in December.
As September rolls into Hawaiian Beaches, visitors can expect a vibrant blend of warm temperatures and frequent rain showers, setting it apart from other months. With daily humidity levels hovering around 82%, the air feels pleasantly tropical, making for a lush landscape. However, the increased precipitation accompanied by 22 rainy days may surprise those imagining endless sunshine, creating a refreshing atmosphere ideal for enjoying the islands' natural beauty. Despite the occasional downpour, September remains an inviting time to explore, with average temperatures hovering around a comfortable 25°C (77°F). For more insights into the seasonal variations of this paradise, check out Hawaiian Beaches Climate.