Planning for the weather is a good way to make your trip to Buka Island relaxing and enjoyable, especially when you're splurging. The hottest months are usually January and February, with an average temperature of 26°C, while the coldest months are September and August, with an average of 25°C. The rainiest months in Buka Island are August, April, July and March, with each month seeing an average of 571 mm of rainfall.