The primary climate in Alaska's southern coastal regions is temperate rainforest, with mild temperatures and high precipitation.

Alaska's southern coastal regions, such as the Panhandle (including Ketchikan and Juneau), experience a temperate rainforest climate. This means the area has mild winters, cool summers, and abundant yearly rainfall. The high precipitation levels support lush vegetation, including towering trees like Sitka spruce and western hemlock, creating a vibrant forest ecosystem. The Pacific Ocean helps moderate the temperature, preventing extreme cold during the winter months. The temperate rainforest climate is a key feature of southeastern Alaska, making it distinct from the arctic conditions found further north and the dry areas of other parts of the state.