Winters are bitterly cold, although they are not so extremely frosty as in more southern inner Siberia places, due to light milding influence of the Arctic Ocean. Summer temperatures are much cooler than in Khatanga, due to more northernly location and cold Arctic Ocean waters nearby. Thanks to this, Syndassko is above the tree line.
Precipitation is quite low, but is somewhat heavier in summer, when it falls mostly as rain, than in the rest of the year, when it falls mostly as snow.