Visiting local bars in Nueva Guinea is better when you know what the weather holds. These rainfall averages and temperatures can help you decide the best time for bar-hopping. The hottest months are usually April and May, with an average temperature of 25°C, while the coldest months are February and January, with an average of 23°C. The rainiest months in Nueva Guinea are August, October, June and September, with each month seeing an average of 330 mm of rainfall.