Apostle Islands National Lakeshore

Apostle Islands National Lakeshore exists as a coastal park at the northeastern tip of the Bayfield Peninsula, the northernmost mainland point in Wisconsin. It consists of twenty–two (22) separate units (21 islands and a 12-mile mainland unit) dedicated to the preservation and public enjoyment of significant historic, scenic, natural, and recreational resources in Ashland and Bayfield Counties.

Lake Superior is renowned for its cold temperatures, rough seas, fog, and sudden squalls. Boaters and paddlers should monitor marine weather forecasts and be constantly alert to changing conditions. Average daytime high temperatures range from 60 degrees Fahrenheit in May, to the upper 80s in mid-summer, to the mid-60s in September. Average lows vary from 40 degrees in May, to the upper 50s in mid-summer, to 50 degrees in September. Average water temperatures in May and June are only in the 40s.