Ust-Kamchatsk (Russian: Усть-Камча́тск) is a rural locality (a settlement) and the administrative center of Ust-Kamchatsky District of Kamchatka Krai, Russia, located on the eastern shore of the Kamchatka Peninsula at the mouth of the Kamchatka River some 50 kilometers (31 mi) away from the Klyuchevskaya Sopka volcano and 522 kilometers (324 mi) from Petropavlovsk-Kamchatsky.
[3] It was founded in 1731 as the settlement of Ust-Primorsky (Усть-Примо́рский) and was renamed Ust-Kamchatsk in 1890.
In 2007, Ust-Kamchatsk was demoted in status from urban-type settlement to a rural locality.
Ust-Kamchatsk has a subarctic climate (Köppen Dfc) although it has a strong maritime influence resulting in much less extreme winters, cooler summers and much heavier precipitation (both as winter snowfall and summer rainfall) compared to interior Siberia and even the Sea of Okhotsk coast.
The effect of the cold Oyashio Current in summer and frequent offshore winds from the Siberian High and Aleutian Low in winter means that, despite the substantial maritime moderation of winter temperatures, annual means are still 7.1 °C or 12.8 °F colder than Ketchikan at a similar latitude on the western coast of North America and 8.9 °C or 16.0 °F colder than Edinburgh at a similar latitude in northwestern Europe.