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Haleakala National Park Climate

Summit Area: The weather at the summit of Haleakala is unpredictable. Temperatures commonly range between 40 and 65F, but can be below freezing at anytime of year with the wind chill factor. Weather changes rapidly at high elevations on Haleakala. Intense sunlight, thick clouds, heavy rain and high winds are possible daily. Wear lightweight, layered clothing that will keep you warm even in wet weather, and sturdy, comfortable shoes. NOTE: Persons with heart or respiratory problems and pregnant women should check with their doctor before coming to the Park, given the reduced oxygen at high elevation.

Kipahulu Area: The weather in Kipahulu is usually warm, and rain is common. Flash flooding of the pools and streams can be hazardous to swimmers and hikers. Always check with the Park Rangers before entering the pools and never swim if flood warnings are posted. Mosquitoes can be prevalent in this area.

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Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.