Alaska's dramatic weather varies seasonally and regionally. Winter (October to April) is long and cold, making most trails inaccessible due to heavy snowfall and icy conditions, unless you're up for snowshoeing or winter trekking.
Spring (May to June) offers longer daylight hours, cooler temperatures, and less crowded trails but watch for lingering snow on higher grounds. Summer (June to August) sees warmer temperatures and is the best time for hiking, though mosquitoes can be bothersome.
Fall (September to October) is short with colder temperatures setting in quickly, but autumn foliage can make for beautiful scenery. Before setting out, always check trail conditions and weather forecasts at
www.nps.gov/akso.