Planning for the weather is an important factor for making your trip to Kiunga a success, especially when you're splurging. The hottest months are usually November and October, with an average temperature of 26°C, while the coldest months are August and July, with an average of 25°C. The rainiest months in Kiunga are March, April, December and November, with each month seeing an average of 508 mm of rainfall.