Health Regulations Vaccinations are not necessary unless arriving from an infected area. The Cook Islands are free of serious diseases and plant and animal pests. Currency The Cook Islands currency is the NZ dollar supplemented by coinage minted for local use. Local coins and notes are not negotiable outside the Cook Islands. The ANZ Bank and Westpac Bank in Avarua are open 9.00am to 3.00pm Monday to Friday.
Visitors can change travellers cheques and principal currencies at larger stores, hotels and motels.
Banking facilities are also available at the airport one hour prior to departure of scheduled flights. The Cook Islands enjoy a pleasantly warm and sunny climate all year round. Severe weather is rare and infrequent. From June through to August are the cooler months. November through to March is the hottest season with some heavy rain.