The climate of The National Reserve of Alacalufes corresponds to two types: Climate Tempered Cold with Great Humidity and Isothermal Climate of Tundra, with an annual thermal average of 7,2° C and 6,5° C, respectively. The precipitations in The National Reserve of Alacalufes are high, reaching to 96,4567 in; every month of the year are received more than 6,6929 in but never exceed 9,4488 in.

The vegetation of The National Reserve of Alacalufes is composed by Coastal Vegetation, Coastal, Scrubs, Formation of Coigüe and Turbales. The main exponents are the Lenga, Ñirre, Cinnamon-coloured, Cypress of the Guaitecas, Michay, Nalca and the amusing catch fly.

Whereas the fauna of The National Reserve of Alacalufes is composed by a great variety of birds and mammals, standing out the marine fauna, composed by the austral Dolphin, wolves of sea and whales

The main activities that can be made in The National Reserve of Alacalufes are Kayak of sea, trekking by the qualified footpaths and observation of mainly marine fauna.