Last updated: February 24, 2025
October in Honolulu, United States, offers a delightful blend of warmth and mild rainfall, making it a charming time to experience the island’s beauty. With maximum temperatures reaching 28°C (82°F) and an average of 26°C (79°F), the weather invites outdoor adventures. Evenings cool slightly to a minimum of 23°C (73°F), creating perfect conditions for starry nights. While precipitation amounts to 45 mm (1.8 in) over about 7 days, these brief showers typically nourish the lush landscapes without compromising the overall enjoyment. Coupled with high humidity levels at 81%, visitors can expect a refreshing coastal breeze that complements the tropical atmosphere, making October an ideal month for both relaxation and exploration in this Hawaiian paradise.
In October, Honolulu boasts a delightful climate that perfectly encapsulates the essence of tropical living. With minimum temperatures around 23°C (73°F) and an average that reaches 26°C (79°F), it remains consistently warm, while the highs peak at a comfortable 28°C (82°F). This month continues the pattern established in previous months, where temperatures gradually rise through the summer, showcasing a transition into the cooler fall. The warmth of October is not only inviting for beach-goers but also sets the stage for experiencing the vibrant culture and stunning natural beauty that Hawaii has to offer. Overall, whether you're exploring the island or lounging by the ocean, the temperatures in Honolulu during October create an ideal backdrop for adventure and relaxation alike.
October in Honolulu brings a noticeable shift in precipitation, with an average of 45 mm (1.8 in) of rainfall over seven rainy days. This marks a significant increase compared to the typically dry summer months, with July and August recording only 13 mm (0.5 in) and 15 mm (0.6 in) respectively. The month serves as a transition into the wetter season, leading up to December's heavier rainfall of 63 mm (2.5 in). As the island bids farewell to the sun-soaked summer, October's slightly elevated humidity and rain can refresh the landscape, making it a vibrant time for nature enthusiasts. Overall, this month encapsulates the beginning of a more diverse climate pattern, setting the stage for the lush blooms of the upcoming months.
In Honolulu, October marks a transition into the cooler months, while maintaining a comfortable humidity level of 81%. This slight dip follows the peak of summer, where humidity levels reached their highest at 83% in both July and August. The fall months bring a gradual decrease, as noted from the summer highs, yet the overall humidity remains relatively stable throughout the year. From January through December, humidity levels fluctuate between 78% and 83%, with October holding steady in the mid-range, suggesting that tropical moisture continues to envelop the island even as temperatures cool, ensuring Honolulu remains a lush paradise year-round.
In October, Honolulu experiences a UV Index of 11, categorizing it as extreme with a burn time of just 10 minutes. This marks a slight decrease from the peak UV Index of 13 observed in the summer months, yet it's still crucial to remain vigilant. Throughout the year, the UV Index trends show particularly high levels from March through September, peaking in June, July, and August. As we transition into the cooler months, both November and December drop back to a very high UV Index of 8, allowing for a brief respite in sun exposure risks. For anyone looking to enjoy outdoor activities in Honolulu this October, it's essential to stay protected. For more detailed UV trends and guidance, visit Honolulu UV Index.
UV Risk Categories
As October unfolds in Honolulu, the island basks in a delightful 302 hours of sunshine, a bit less than the sun-soaked summer peak but still representing a vibrant continuation of warm, golden days. The gradual decline from July’s 350 hours showcases a subtle transition towards the end of the year, yet October's sunshine remains abundant compared to the winter months ahead. This shift from August’s 339 hours hints at the approaching cooler season, while the charming blend of warmth and light during this month creates a perfect backdrop for outdoor activities and scenic explorations. Embracing both beauty and comfort, October's sun sets the stage for a picturesque Hawaiian autumn.
When considering the likelihood of sunny weather in October in Honolulu, United States, the data reveals a generally bright outlook. With a 69% chance of sun, October stands strong among the year's months, boasting similar probabilities to September (70%) and June (69%). The peak sun exposure occurs in August at 74%, while October maintains a sunny disposition that gradually shifts towards the cooler, cloudier months of November (64%) and December (41%). This trend highlights that while autumn begins to set in, October still promises plenty of sun, making it an attractive time for outdoor activities in the tropical paradise of Honolulu.
In Honolulu, October ushers in a transition as daylight begins to shorten, with the sun illuminating the island for about 11 hours each day. This marks a slight decline from the summer months, where the day stretched to 13 hours from May to August, basking residents and visitors alike in abundant sunshine. As the year progresses, daylight gradually diminishes, dropping to 10 hours by January. Interestingly, the steady increase in daylight from 10 hours in January to 13 hours in mid-year showcases a beautiful cycle of seasonal light. While October signals a soft retreat from the long summer days, it offers a gentle reminder of the balance between day and night, as the island prepares for the cooler months ahead.
As October arrives in Honolulu, the winds begin to pick up, with an average speed of 8.0 m/s (18 mph), marking a noticeable increase from the previous months. This surge follows the milder breezes of summer, particularly the highs seen in July at 8.7 m/s (19 mph) and remains elevated compared to the fall's earlier months. While September's winds averaged 7.7 m/s (17 mph), October's gusts usher in a refreshing change, suggesting a transition into a more dynamic weather pattern. As temperatures cool slightly, the increased wind speed enhances the island's charm, making it a perfect time for outdoor adventures under clear, sunny skies. This period sets the stage for a gentle descent in wind speeds during the subsequent months, where November drops to 5.1 m/s (11 mph), giving a hint of the calm that winter brings.
The weather in Honolulu changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Honolulu and find detailed weather information for every month.
October and January exhibit distinct weather characteristics, with October generally warmer and wetter than January. In October, temperatures range from a minimum of 23°C (73°F) to a maximum of 28°C (82°F), accompanied by an average humidity of 81% and 45 mm (1.8 in) of precipitation over about 7 days. In contrast, January is cooler, featuring temperatures that span from 20°C (69°F) to 25°C (78°F), with reduced rainfall totaling only 16 mm (0.6 in) over about 4 days, and a slightly lower humidity level of 78%. For more detailed information, you can check Honolulu weather in January.
In comparing the weather between October and February, we can see some notable differences. October enjoys warmer temperatures, with a minimum of 23°C (73°F) and an average of 26°C (79°F), while February has a slightly cooler minimum of 17°C (63°F) and an average of 23°C (73°F). Precipitation is higher in February, totaling 60 mm (2.4 in) over 9 days compared to October's 45 mm (1.8 in) over 7 days. Humidity remains similar between the two months, with October sitting at 81% and February at 79%. For a more detailed look at February weather, check out Honolulu weather in February.
October typically offers warmer temperatures in Honolulu, with a minimum of 23°C (73°F) and an average of 26°C (79°F), while March is slightly cooler, with a minimum of 19°C (67°F) and an average of 23°C (73°F). Both months experience significant humidity, hovering around 81% in October and 78% in March. However, precipitation is slightly higher in March, with 66 mm (2.6 in) falling over 9 days compared to October's 45 mm (1.8 in) over 7 days. For more detailed insights, check out Honolulu weather in March.
When comparing the weather in October and April, it’s clear that both months have relatively similar humidity levels at 81%. However, October tends to be slightly warmer, with average temperatures reaching 26°C (79°F) and a maximum of 28°C (82°F), compared to April's average of 24°C (75°F) and maximum of 25°C (78°F). Additionally, October experiences more precipitation, averaging 45 mm (1.8 in) across 7 days, while April sees about 30 mm (1.2 in) over 6 days. For a closer look at the climate during April, you can refer to this link: Honolulu weather in April.
In October, the weather features warmer temperatures compared to May, with a minimum of 23°C (73°F) and an average high of 28°C (82°F), while May has slightly cooler averages with a minimum of 19°C (66°F) and a maximum of 27°C (80°F). October also experiences more precipitation, with about 45 mm (1.8 in) over 7 days, compared to May’s 23 mm (0.9 in) over just 4 days. Despite this, the humidity remains relatively high in both months, with October at 81% and May at 82%. For more detailed insights, you can visit Honolulu weather in May.
In comparing the weather of October and June, both months exhibit relatively warm temperatures, with October experiencing slightly higher averages. October has a minimum temperature of 23°C (73°F) and an average of 26°C (79°F), while June sees a similar minimum of 23°C (74°F) but a slightly lower average of 25°C (78°F). Additionally, October receives more precipitation, totaling 45 mm (1.8 in) over about 7 days, compared to June's 27 mm (1.1 in) over 3 days. Humidity levels are comparable, with October at 81% and June slightly higher at 82%. For a closer look at June's weather specifics, check out Honolulu weather in June.
When comparing the weather in October and July, we can see that both months exhibit similar temperature ranges, with minimums around 23°C (73°F), averages of 26°C (79°F), and maximums reaching 28°C (82°F). However, October experiences significantly more rainfall, with 45 mm (1.8 in) of precipitation occurring over 7 days, compared to July's 13 mm (0.5 in) over just 2 days. Humidity levels are slightly lower in July at 83%, while October holds a humidity of 81%. For a more detailed look at July weather specifics, you can visit Honolulu weather in July.
In comparing the weather of October and August, both months feature similar average temperatures around 26°C (79°F), with maximum temperatures reaching 28°C (82°F). However, October experiences slightly cooler minimum temperatures at 23°C (73°F), while August starts a bit warmer with a minimum of 24°C (76°F). August sees significantly less rainfall, with only 15 mm (0.6 in) over 2 days compared to October's 45 mm (1.8 in) over 7 days, indicating a wetter October. Additionally, humidity levels are comparable, with October at 81% and August slightly higher at 83%. For more information about August weather, you can check Honolulu weather in August.
In comparison to September, October experiences similar temperatures, with both months averaging around 26°C (79°F) and maximum temperatures reaching 28°C (82°F). However, October sees an increase in precipitation, totaling 45 mm (1.8 in) over 7 days, compared to September's 19 mm (0.7 in) over just 4 days. Humidity levels remain comparable, with October at 81% and September slightly higher at 82%. For more detailed insights, you can check out Honolulu weather in September.
In comparing the weather between October and November, October tends to be slightly warmer, with average temperatures ranging from a minimum of 23°C (73°F) to a maximum of 28°C (82°F), contrasted with November's minimum of 21°C (70°F) and maximum of 27°C (82°F). Precipitation levels also decrease in November, dropping to 25 mm (1.0 in) over 6 days compared to October's 45 mm (1.8 in) over 7 days. Humidity remains relatively consistent, slightly decreasing from 81% in October to 80% in November. For more detailed information on November's weather, you can check Honolulu weather in November.
In October, the weather tends to be warmer with average temperatures around 26°C (79°F) and maximums reaching up to 28°C (82°F). The month sees about 45 mm (1.8 in) of rainfall over approximately 7 days, maintaining a humid atmosphere with a humidity level of 81%. In contrast, December brings slightly cooler temperatures, with an average of 24°C (75°F) and maximums peaking at 26°C (79°F). Rainfall increases to 63 mm (2.5 in) over about 8 days, and the humidity remains relatively high at 79%. For more details on the weather in December, you can visit Honolulu weather in December.
As October unfolds in Honolulu, the weather transforms into a delightful blend of warm temperatures and refreshing humidity. With average highs around 26°C (79°F), the month offers a pleasant respite from the summer heat, making it an ideal time for outdoor adventures. While occasional rain showers—totaling about 45 mm—grace the island for roughly a week, they contribute to the lush landscapes rather than dampening the spirits. This unique mix of warmth and mild precipitation sets October apart from the drier summer months, creating a perfect backdrop for visitors to explore the beauty of Hawaii. For further insights, check out Honolulu Climate.