Sequim /ˈskwɪm/  is a city in Clallam County, Washington, United States. The 2010 census counted a population of 6,606. Sequim with the surrounding area has a population of about 28,000. Sequim is located along the Dungeness River near the base of the Olympic Mountains. The population served by the Sequim School District population was over 26,000 in 2018. The city has been increasing in population in recent years due to the influx of retirees seeking good weather and a relaxed lifestyle.Sequim lies within the rain shadow of the Olympic Mountains and receives on average less than 16 inches of rain per year—about the same as Los Angeles, California—and has given itself the nickname of Sunny Sequim. Yet the city is fairly close to some of the wettest temperate rainforests of the contiguous United States. This climate anomaly is sometimes called the blue hole of Sequim.