Taking the local weather in Wewak into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually May and October, with an average temperature of 27°C, while the coldest months are February and January, with an average of 26°C. The rainiest months in Wewak are March, April, December and November, with each month seeing an average of 370 mm of rainfall.