Hilo Weather in October

Hilo on the Big Island's rainy east coast is one of America's wettest cities, averaging over 130 inches of rain annually. The northeast trade winds hit Mauna Kea's massive slopes and dump enormous precipitation on the windward coast. The city overlooks Hilo Bay and is vulnerable to tsunamis — markers throughout downtown show previous inundation levels.

Foliage season in temperate cities. Often the best month to visit Europe.