Last updated: January 18, 2025
Bougainville, located in Papua New Guinea, is characterized by a tropical rainforest climate as classified by the Köppen-Geiger system (Af). The region experiences consistently warm temperatures, with minimums reaching around 20°C (69°F) in November, and averages hovering around 25°C (78°F) throughout the year. The peak temperatures occur in March, regularly climbing to a maximum of 31°C (89°F). This climatic setting fosters a rich biodiversity and vibrant ecosystems, making Bougainville a unique focal point for both ecological research and sustainable development.
In Bougainville, Papua New Guinea, temperature patterns exhibit a consistent warm climate throughout the year, reflecting minimal seasonal variation. Monthly minimum temperatures hover between 20°C (69°F) and 22°C (71°F), with January through March experiencing slightly higher minima. Average temperatures remain stable at approximately 25°C (77°F) to 26°C (79°F) in most months, with notable peaks during the early months of the year. Maximum temperatures typically range from 29°C (84°F) to 31°C (89°F), with the warmest months occurring from January to March, gradually cooling to around 29°C (85°F) from July to September. Towards the year's end, temperatures notch back up slightly in October and December, reinforcing Bougainville's character as a region of warm, tropical conditions.
In November, both Arawa and Panguna experience a minimum temperature of 20°C (69°F) and a maximum of 31°C (87°F) is recorded in October for both locations, as detailed in their respective links: monthly temperatures in Arawa and monthly temperatures in Panguna. In contrast, Buka shows a higher minimum temperature of 25°C (77°F) in September, with January seeing a maximum of 29°C (85°F) as noted in the link: monthly temperatures in Buka.
Bougainville, Papua New Guinea, experiences significant rainfall throughout the year, with March emerging as the wettest month, recording an impressive 364 mm (14.3 in) of precipitation over 28 days. The peak of the rainy season typically spans from February to April, during which monthly totals consistently exceed 360 mm (14.2 in). This heavy rainfall is supported by the region's tropical climate, which fosters lush vegetation and supports diverse ecosystems. Even during the less rainy months, precipitation remains substantial, ranging from 244 mm (9.6 in) in January to approximately 283 mm (11.2 in) in May.
The frequency of rainfall days contributes to the overall wet conditions, with each month averaging between 22 to 29 days of rain. July and August stand out with 29 and 27 days of precipitation, respectively, collectively highlighting the region's persistent moisture. The steady precipitation pattern underscores Bougainville's classification as a tropical rainforest zone, providing critical resources for agriculture while also challenging infrastructure and water management due to the regular, abundant rainfall.
Bougainville, Papua New Guinea, exhibits a notable variation in sunshine duration throughout the year, with a general trend of increasing sunshine hours as the dry season approaches. March stands out as the month with the highest recorded sunshine, boasting a remarkable 266 hours of sun, while October follows closely behind with 282 hours. The transition into the drier months, particularly from September to December, reveals consistently high sunshine levels, with each month exceeding 257 hours. This seasonal shift not only enhances outdoor activities and agricultural output but also emphasizes the importance of sunlight for the lush growth characteristic of this tropical region.
Conversely, the early months of the year demonstrate a gradual increase in sunshine, starting at 222 hours in January and building up to the higher peaks later in the year. The consistency in sunshine hours during April and June, with 239 and 255 hours respectively, indicates a relatively bright period despite persistent rainfall. Such insights highlight how Bougainville enjoys ample sunshine throughout the year, particularly as it transitions into its warmer, drier months, presenting both opportunities for solar energy utilization and challenges for managing heat and hydration during peak sunshine periods.
In Bougainville, Papua New Guinea, the UV Index consistently reaches extreme levels throughout the year, with values predominantly in the range of 11 to 17. Notably, March marks the peak UV Index at 17, posing a substantial risk for skin damage with a burn time of only 10 minutes. The months of January, February, and April follow closely with a UV Index of 16, emphasizing the need for adequate sun protection during these periods. Despite a slight decline in UV levels during the middle of the year, with May and June recording 13 and 11 respectively, the exposure remains classified as extreme, implying sustained caution is warranted.
As the year progresses into the latter months, the UV Index remains notably high, ranging from 14 to 15 from September to December. This consistent exposure level highlights the tropical climate of Bougainville, where intense sunlight can pose health risks, particularly without proper shielding. Residents and visitors alike are advised to take necessary precautions such as wearing sunscreen and protective clothing, especially during peak hours, to mitigate the adverse effects associated with high UV exposure.
UV Risk Categories
In Bougainville, Papua New Guinea, daylight duration remains fairly consistent throughout the year, reflecting the region's proximity to the equator. From January to March, residents enjoy a steady 12 hours of daylight each day, creating a reliably bright atmosphere ideal for outdoor activities and agricultural practices. However, as the calendar shifts to April through August, the length of daylight decreases briefly to 11 hours daily, marking the slight seasonal variation typical in tropical regions. This period provides a subtle adjustment in the daily routine, with evenings arriving a bit earlier.
As the year progresses into September, daylight duration returns to 12 hours, continuing through October and November before stabilizing once more. December also sees 12 hours of daylight, ensuring that the entire second half of the year experiences ample sunlight for both residents and visitors. The consistent daylight patterns not only support local ecosystems but also influence cultural activities, agricultural cycles, and tourism, making Bougainville a region of year-round accessibility and vibrant life.
Arawa, Papua New Guinea, experiences a tropical climate characterized by consistent temperatures throughout the year, with averages around 24°C (76°F) and maximums reaching up to 31°C (87°F) in October. Precipitation is significant, particularly in March, with an average of 437 mm (17.2 in), and rainfall remains high even in drier months. The region enjoys a fair amount of sunshine, peaking at 277 hours in October, allowing for relatively bright days despite the frequent rainfall. With a stable temperature range and substantial precipitation, Arawa's climate supports lush tropical ecosystems. For more details, visit Arawa climate.
Buin, Papua New Guinea experiences a tropical climate characterized by consistently warm temperatures throughout the year, with averages ranging from 26°C (79°F) to 27°C (81°F). The region sees significant rainfall, peaking in April with 335 mm (13.2 in) and experiencing a high of 369 mm (14.5 in) in August. Sunshine hours vary, with October receiving the most at 289 hours. Despite the heavy precipitation, the warm and humid conditions contribute to a vibrant ecosystem. For more information, visit Buin climate.
Buka, Papua New Guinea experiences a tropical climate characterized by consistently warm temperatures throughout the year, with daily averages around 27°C (81°F). The region sees its highest rainfall during the months of March and April, accumulating up to 382 mm (15.0 in), while October also receives substantial precipitation at 289 mm (11.4 in). Sunshine hours vary, with May recording the most at 272 hours, and October enjoying 292 hours of sunshine. Overall, Buka's climate is marked by warm temperatures, significant rainfall, and a good amount of sunshine. For more detailed information, visit Buka climate.
Kieta, Papua New Guinea experiences a tropical climate characterized by consistent temperatures throughout the year, with averages ranging from 25°C to 26°C (77°F to 79°F). The region sees significant rainfall, particularly from March to July, with July experiencing the highest precipitation at 372 mm (14.6 in). Despite the heavy rains, Kieta benefits from ample sunshine, notably in October with 277 hours of sunshine. Visitors can expect warm conditions with a mix of wet and dry periods, making it a vibrant tropical environment. For more details, visit Kieta climate.
Panguna, Papua New Guinea experiences a tropical climate characterized by consistently high temperatures and significant rainfall throughout the year. Average temperatures hover around 24°C (76°F), with maximums reaching up to 31°C (87°F) in October. The area receives substantial rainfall, peaking at 437 mm (17.2 in) in March, while the sunshine duration varies, with January receiving about 219 hours of sun. This combination of warmth and humidity contributes to a lush, green environment. For more detailed information, visit Panguna climate.
In conclusion, Bougainville, Papua New Guinea, presents a unique climate characterized by consistent warmth, significant rainfall, ample sunlight, and extreme UV exposure throughout the year. The steady temperatures and pronounced rainy season support a lush, biodiverse environment, while the reliable daylight duration enhances agricultural productivity and outdoor pursuits. As residents and visitors navigate the challenges of high UV levels, understanding these climatic patterns helps promote safety and well-being in this tropical paradise. Overall, Bougainville's climate not only enriches its natural landscapes but also shapes the cultural and social experiences of its inhabitants.