Bay of Plenty from 9–16 °C in winter to 22–26 °C in summer. Rainfall occurs more frequently in winter than in summer, but tropical storms in summer and autumn can produce heavy rain with high winds. Central parts of the region can receive up to 2000 mm of rainfall annually, while the eastern and western areas can receive up to 4000 mm. The sub-national GDP of the Bay of Plenty region was estimated at US$6.689 billion in 2003, 5% of New Zealand's national GDP. Agriculture, natural resources and tourism are the major industries. Most (96 per cent) of the region is defined as
Bay of Plenty become a popular attraction as the number of whales such as blue whales and humpback whales migrating into bay waters began to recover. The Bay of Plenty has 227 km of rail network and 4,460 km of roads. The main rail line in the region is the East Coast Main Trunk Railway, which extends from Hamilton in the Waikato region to Kawerau via Tauranga, with the Murupara Branch Railway extending the Kawerau terminus to Murupara, and the Mount Maunganui Branch connecting the Mount Maunganui terminus with the East Coast Main Trunk. Rail networks in the region are used exclusively for