Tilichiki lies in the northeast of the
Kamchatka Peninsula, west of the
Olyutor Range, on the shores of the
Skrytaya Harbor, separated by a narrow
spit from the northern part of the
Korfa Bay in the
Bering Sea. In 1995, a large natural reserve of some was created. Korf and Tilichiki have a
subarctic climate (
Köppen Dfc) though owing to their maritime location the winters are not so severe as at the same latitude in interior Siberia. As an illustration, the mean temperature of the coldest month is approximately higher than in
Olyokminsk at the same latitude near the
Pole of Cold.
Precipitation also shows the pronounced maritime influence, with annual averages being typical of Kamchatka and around three or four times those of interior Siberia at the same latitude. The heavier snow cover and milder winter temperatures mean that in spite of the mean temperature of the warmest month not reaching beyond ,
permafrost is only discontinuous. Strong winds, however, limit tree growth severely. Due to the cool ocean moderating winds from the interior, neither nor have been measured, with the area having a much lower thermal oscillation than typical for the
Russian Far East. {{Weather box|width = auto ==Economy and infrastructure==