The climate of Papua New Guinea is chiefly influenced by altitude and by the monsoons. The northwest or wet monsoon prevails from December to March, and the southeast or dry trade winds from May to October.
At 462,840 km2 (178,704 sq mi), Papua New Guinea is the world's fifty-fourth largest country. Including all its islands, it lies between latitudes 0° and 12°S, and longitudes 140° and 160°E.
The main hospitals are Port Moresby General (Papuan region), Goroka Base (Highlands) and Angau Memorial. Visitors can use any of the private doctors or public consultation clinics. Doctors and hospitals are not free and often expect immediate payment for medical services.